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      "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.",
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        "label": "Additional Paid in Capital, Common Stock",
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              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 6080000000,
              "accn": "0000764180-25-000049",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-04-29",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 2632000000,
              "accn": "0000764180-25-000111",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-07-30",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 5119000000,
              "accn": "0000764180-25-000130",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-10-30",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 5932000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25"
            },
            {
              "end": "2025-12-31",
              "val": 5932000000,
              "accn": "0000764180-26-000058",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-04-30"
            },
            {
              "end": "2025-12-31",
              "val": 5932000000,
              "accn": "0000764180-26-000094",
              "fy": 2026,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2026-07-30",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 5202000000,
              "accn": "0000764180-26-000058",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-04-30",
              "frame": "CY2026Q1I"
            },
            {
              "end": "2026-06-30",
              "val": 4022000000,
              "accn": "0000764180-26-000094",
              "fy": 2026,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2026-07-30",
              "frame": "CY2026Q2I"
            }
          ]
        }
      },
      "AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent": {
        "label": "Disposal Group, Including Discontinued Operation, Assets, Current",
        "description": "Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000764180-21-000127",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-10-28",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-09-30",
              "val": 1490000000,
              "accn": "0000764180-21-000127",
              "fy": 2021,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2021-10-28",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "BridgeLoan": {
        "label": "Bridge Loan",
        "description": "Short-Term financing which is expected to be paid back relatively quickly, such as by a subsequent longer-term loan. Also called swing loan or bridge financing.",
        "units": {
          "USD": [
            {
              "end": "2009-01-06",
              "val": 4300000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-01-06",
              "val": 4300000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2009-02-28",
              "val": 0,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q1I"
            },
            {
              "end": "2009-02-28",
              "val": 0,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BuildingsAndImprovementsGross": {
        "label": "Buildings and Improvements, Gross",
        "description": "Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.",
        "units": {
          "USD": [
            {
              "end": "2008-12-31",
              "val": 1678000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 1909000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "end": "2009-12-31",
              "val": 1909000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 1292000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 1292000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1271000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 1271000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1276000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 1276000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1308000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 1308000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1323000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 1323000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 1406000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "end": "2015-12-31",
              "val": 1406000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 1481000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 1481000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 1437000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "end": "2017-12-31",
              "val": 1437000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 1442000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 1442000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-12-31",
              "val": 1461000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 1461000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1480000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26"
            },
            {
              "end": "2020-12-31",
              "val": 1480000000,
              "accn": "0000764180-22-000019",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1422000000,
              "accn": "0000764180-22-000019",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 1422000000,
              "accn": "0000764180-23-000020",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-27",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1478000000,
              "accn": "0000764180-23-000020",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-27"
            },
            {
              "end": "2022-12-31",
              "val": 1478000000,
              "accn": "0000764180-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-27",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-12-31",
              "val": 1535000000,
              "accn": "0000764180-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-27"
            },
            {
              "end": "2023-12-31",
              "val": 1535000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 1552000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26"
            },
            {
              "end": "2024-12-31",
              "val": 1552000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 1574000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "BusinessAcquisitionCostOfAcquiredEntityCashPaid": {
        "label": "Business Acquisition, Cost of Acquired Entity, Cash Paid (Deprecated 2013-01-31)",
        "description": "Amount of cash paid to acquire the entity.",
        "units": {
          "USD": [
            {
              "end": "2009-01-06",
              "val": 11000000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-01-06",
              "val": 11000000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2009-01-06",
              "val": 11000000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "end": "2009-01-06",
              "val": 11000000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            }
          ]
        }
      },
      "BusinessAcquisitionCostOfAcquiredEntityLiabilitiesIncurred": {
        "label": "Business Acquisition, Cost of Acquired Entity, Liabilities Incurred (Deprecated 2013-01-31)",
        "description": "Fair Value of the liabilities incurred by the acquirer to former owners of the acquiree, including the fair value of any contingent consideration. If liabilities transferred as consideration remain within the combined entity after the business combination (for example, because the assets or liabilities were transferred to the acquiree rather than to its former owners), and the acquirer therefore retains control of them; in that situation, the acquirer measures those liabilities at their carrying amounts immediately before the acquisition date.",
        "units": {
          "USD": [
            {
              "end": "2009-01-06",
              "val": 1300000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-01-06",
              "val": 1300000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2009-01-06",
              "val": 1300000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "end": "2009-01-06",
              "val": 1300000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            }
          ]
        }
      },
      "BusinessAcquisitionCostOfAcquiredEntityPurchasePrice": {
        "label": "Business Acquisition, Cost of Acquired Entity, Purchase Price (Deprecated 2013-01-31)",
        "description": "The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.",
        "units": {
          "USD": [
            {
              "end": "2009-01-06",
              "val": 10400000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-01-06",
              "val": 10400000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2009-01-06",
              "val": 10400000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "end": "2009-01-06",
              "val": 10400000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "end": "2009-12-31",
              "val": 10407000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 10407000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionCostOfAcquiredEntityTransactionCosts": {
        "label": "Business Acquisition, Transaction Costs",
        "description": "Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.",
        "units": {
          "USD": [
            {
              "end": "2009-01-06",
              "val": 600000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-01-06",
              "val": 600000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2009-01-06",
              "val": 600000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "end": "2009-01-06",
              "val": 600000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaEarningsPerShareBasic": {
        "label": "Business Acquisition, Pro Forma Earnings Per Share, Basic",
        "description": "The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.",
        "units": {
          "USD/shares": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 2.17,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaEarningsPerShareDiluted": {
        "label": "Business Acquisition, Pro Forma Earnings Per Share, Diluted",
        "description": "The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.",
        "units": {
          "USD/shares": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 2.16,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax": {
        "label": "Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax (Deprecated 2011-01-31)",
        "description": "The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 2677000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareBasic": {
        "label": "Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic",
        "description": "Per basic share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.",
        "units": {
          "USD/shares": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 1.29,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted": {
        "label": "Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted",
        "description": "Per diluted share amount of pro forma income from continuing operations, after tax, as if the business combination had been completed at the beginning of a period.",
        "units": {
          "USD/shares": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 1.28,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaNetIncomeLoss": {
        "label": "Business Acquisition, Pro Forma Net Income (Loss) (Deprecated 2011-01-31)",
        "description": "The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 4515000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionProFormaRevenue": {
        "label": "Business Acquisition, Pro Forma Revenue (Deprecated 2011-01-31)",
        "description": "The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 21339000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets": {
        "label": "Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets (Deprecated 2013-01-31)",
        "description": "The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 60000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 60000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationCurrentAssetsCashAndCashEquivalents": {
        "label": "Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents (Deprecated 2013-01-31)",
        "description": "The amount of cash and cash equivalents acquired in a business combination.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 163000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 163000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationCurrentAssetsInventory": {
        "label": "Business Acquisition, Purchase Price Allocation, Current Assets, Inventory (Deprecated 2013-01-31)",
        "description": "The amount of acquisition cost of a business combination allocated to inventory, including finished goods, work-in-process, and raw materials.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 796000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 796000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationCurrentLiabilitiesLongTermDebt": {
        "label": "Business Acquisition, Purchase Price Allocation, Current Liabilities, Long-term Debt (Deprecated 2013-01-31)",
        "description": "The amount of acquisition cost of a business combination allocated to the current portion of long-term debt of the acquired entity.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 240000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 240000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationGoodwillAmount": {
        "label": "Business Acquisition, Purchase Price Allocation, Goodwill Amount (Deprecated 2013-01-31)",
        "description": "Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 5097000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 5097000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount": {
        "label": "Business Acquisition, Goodwill, Expected Tax Deductible Amount",
        "description": "The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.",
        "units": {
          "USD": [
            {
              "end": "2011-12-31",
              "val": 0,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2023-06-01",
              "val": 0,
              "accn": "0000764180-23-000113",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-01",
              "frame": "CY2023Q2I"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationIntangibleAssetsNotAmortizable": {
        "label": "Business Acquisition, Purchase Price Allocation, Intangible Assets Not Amortizable (Deprecated 2013-01-31)",
        "description": "The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 9059000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 9059000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationNoncurrentLiabilitiesLongTermDebt": {
        "label": "Business Acquisition, Purchase Price Allocation, Noncurrent Liabilities, Long-term Debt (Deprecated 2013-01-31)",
        "description": "The amount of acquisition cost of a business combination allocated to the noncurrent portion of the long-term debt assumed from the acquired entity.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 900000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 900000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment": {
        "label": "Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment (Deprecated 2013-01-31)",
        "description": "The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 688000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 688000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "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": "2009-01-01",
              "end": "2009-03-31",
              "val": 164000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q1"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": -60000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 7000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 60000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 7000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q3"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 60000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 60000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2009-10-01",
              "end": "2009-12-31",
              "val": 9000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 5000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 5000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 5000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 5000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q3"
            },
            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 5000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-10-01",
              "end": "2010-12-31",
              "val": 7000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4"
            },
            {
              "start": "2010-10-01",
              "end": "2010-12-31",
              "val": 7000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 4000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 4000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 0,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 1000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-10-01",
              "end": "2011-12-31",
              "val": 1000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-10-01",
              "end": "2011-12-31",
              "val": 1000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4"
            }
          ]
        }
      },
      "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet": {
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net",
        "description": "Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 5310000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 5310000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "BusinessExitCosts": {
        "label": "Business Exit Costs (Deprecated 2013-01-31)",
        "description": "The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-06-30",
              "val": 277000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "start": "2008-04-01",
              "end": "2008-06-30",
              "val": 19000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04",
              "frame": "CY2008Q2"
            },
            {
              "start": "2008-01-01",
              "end": "2008-09-30",
              "val": 294000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2008-07-01",
              "end": "2008-09-30",
              "val": 17000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29",
              "frame": "CY2008Q3"
            },
            {
              "start": "2009-01-01",
              "end": "2009-03-31",
              "val": 128000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28",
              "frame": "CY2009Q1"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 166000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 38000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 299000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 133000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29",
              "frame": "CY2009Q3"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 7000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28",
              "frame": "CY2010Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -4000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            }
          ]
        }
      },
      "CapitalLeasesContingentRentalPaymentsReceived": {
        "label": "Capital Leases, Contingent Rental Payments Received",
        "description": "For sales-type and direct financing leases, total contingent rentals received during the period.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 0,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 0,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
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            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 0,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
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            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 0,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 0,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014"
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            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 0,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 0,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017"
            }
          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivable": {
        "label": "Capital Leases, Future Minimum Payments Receivable",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases.",
        "units": {
          "USD": [
            {
              "end": "2012-12-31",
              "val": 137000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1495000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 1241000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 923000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 805000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 696000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivableCurrent": {
        "label": "Capital Leases, Future Minimum Payments Receivable, Next Twelve Months",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases 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": "2010-12-31",
              "val": 127000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 153000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 137000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 229000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 42000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 33000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 96000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter": {
        "label": "Capital Leases, Future Minimum Payments, Receivable Thereafter",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases 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": "2010-12-31",
              "val": 3636000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 2960000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1651000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 825000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 561000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 334000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 229000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 73000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivableInFiveYears": {
        "label": "Capital Leases, Future Minimum Payments, Receivable in Five Years",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases 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": "2010-12-31",
              "val": 405000000,
              "accn": "0001193125-11-045778",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
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              "val": 149000000,
              "accn": "0001193125-12-064660",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
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            {
              "end": "2012-12-31",
              "val": 151000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
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              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 181000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 136000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
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              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
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              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivableInFourYears": {
        "label": "Capital Leases, Future Minimum Payments, Receivable in Four Years",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases 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": "2010-12-31",
              "val": 304000000,
              "accn": "0001193125-11-045778",
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              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
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              "val": 335000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 99000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 81000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 154000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 192000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 128000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 96000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
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          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivableInThreeYears": {
        "label": "Capital Leases, Future Minimum Payments, Receivable in Three Years",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases 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": "2010-12-31",
              "val": 219000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 288000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 275000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 53000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 68000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 155000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 186000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 116000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "CapitalLeasesFutureMinimumPaymentsReceivableInTwoYears": {
        "label": "Capital Leases, Future Minimum Payments, Receivable in Two Years",
        "description": "Amount of minimum lease payments to be received by the lessor for capital leases 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": "2010-12-31",
              "val": 175000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 203000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 181000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 229000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 48000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 64000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 129000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 173000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "CapitalLeasesIncomeStatementDirectFinancingLeaseRevenue": {
        "label": "Capital Leases, Income Statement, Direct Financing Lease Revenue",
        "description": "Revenue realized in the period on direct financing leases.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 5000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 7000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 7000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
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              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
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            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1000000,
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              "fy": 2011,
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              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1000000,
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              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1000000,
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              "fy": 2012,
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            {
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              "end": "2012-12-31",
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              "accn": "0000764180-14-000025",
              "fy": 2013,
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              "filed": "2014-02-26",
              "frame": "CY2012"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 1000000,
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              "fy": 2012,
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              "filed": "2013-02-27"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 1000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
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          ]
        }
      },
      "CapitalLeasesNetInvestmentInDirectFinancingLeases": {
        "label": "Capital Leases, Net Investment in Direct Financing Leases",
        "description": "The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.",
        "units": {
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            {
              "end": "2009-12-31",
              "val": 183000000,
              "accn": "0001193125-11-045778",
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              "end": "2010-12-31",
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              "fy": 2011,
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              "filed": "2012-02-16",
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              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "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": "2010-01-01",
              "end": "2010-06-30",
              "val": 12000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 23000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2011-01-03",
              "end": "2011-01-07",
              "val": 200000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28"
            },
            {
              "start": "2011-01-03",
              "end": "2011-01-07",
              "val": 200000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-03",
              "end": "2011-01-07",
              "val": 200000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 4000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 9000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 36000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2012-01-01",
              "end": "2012-01-03",
              "val": 500000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-01-03",
              "val": 500000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-01-03",
              "val": 500000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 4000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-06-30",
              "val": 14000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": 38000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            },
            {
              "start": "2013-01-01",
              "end": "2013-03-31",
              "val": 8000000,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25",
              "frame": "CY2013Q1"
            },
            {
              "start": "2013-01-01",
              "end": "2013-06-30",
              "val": 15000000,
              "accn": "0000764180-13-000064",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-07-24"
            },
            {
              "start": "2017-12-01",
              "end": "2017-12-31",
              "val": 270000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "start": "2017-12-01",
              "end": "2017-12-31",
              "val": 270000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "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": 0.2,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.23,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanEffectOfSettlementsAndCurtailmentsOnAccumulatedBenefitObligation": {
        "label": "Defined Benefit Plan, Effect of Settlements and Curtailments on Accumulated Benefit Obligation (Deprecated 2017-01-31)",
        "description": "For pension plans, the amount of Increase or Decrease in the accumulated benefit obligation related to the effects of a settlement or curtailment.",
        "units": {
          "USD": [
            {
              "end": "2008-12-31",
              "val": 50000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-12-31",
              "val": 9000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            }
          ]
        }
      },
      "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": 0.58,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.53,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "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": "2010-12-31",
              "val": 5218000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 5275000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 5275000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 6167000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 6167000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 7077000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 7077000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 7297000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 7297000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 6706000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "end": "2015-12-31",
              "val": 6706000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 7475000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear": {
        "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year",
        "description": "Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.",
        "units": {
          "pure": [
            {
              "end": "2017-12-31",
              "val": 0.07,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 0.065,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "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": "2017-01-01",
              "end": "2017-03-31",
              "val": -8000000,
              "accn": "0000764180-18-000038",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-04-26",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": -19000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-07-26"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": -11000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-07-26",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": -37000000,
              "accn": "0000764180-18-000095",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-10-25"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -18000000,
              "accn": "0000764180-18-000095",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-10-25",
              "frame": "CY2017Q3"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": -7000000,
              "accn": "0000764180-18-000038",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-04-26",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": -16000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-07-26"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": -9000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-07-26",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": -37000000,
              "accn": "0000764180-18-000095",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-10-25"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": -21000000,
              "accn": "0000764180-18-000095",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-10-25",
              "frame": "CY2018Q3"
            }
          ]
        }
      },
      "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": 0.06,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 0.07,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1": {
        "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement",
        "description": "Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.",
        "units": {
          "USD": [
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 0,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 0,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 0,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -81000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -81000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -81000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2017"
            },
            {
              "start": "2017-10-01",
              "end": "2017-12-31",
              "val": -81000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q4"
            }
          ]
        }
      },
      "DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1": {
        "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment",
        "description": "Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment.",
        "units": {
          "USD": [
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
              "val": -20000000,
              "accn": "0000764180-17-000050",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-02",
              "frame": "CY2016Q1"
            },
            {
              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": -20000000,
              "accn": "0000764180-17-000099",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-07-27"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": -20000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-10-26"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -27000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": -27000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016"
            }
          ]
        }
      },
      "DefinedBenefitPlanSettlementsPlanAssets": {
        "label": "Defined Benefit Plan, Plan Assets, Payment for Settlement",
        "description": "Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract.",
        "units": {
          "USD": [
            {
              "start": "2017-12-01",
              "end": "2017-12-31",
              "val": 277000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "start": "2017-12-01",
              "end": "2017-12-31",
              "val": 277000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "start": "2017-12-01",
              "end": "2017-12-31",
              "val": 277000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
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              "filed": "2020-02-25",
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            {
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            {
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            {
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            {
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              "filed": "2013-02-27",
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            {
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              "filed": "2013-02-27",
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          ]
        }
      },
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        "label": "Equity Method Investment, Summarized Financial Information, Net Income (Loss) (Deprecated 2020-01-31)",
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            {
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            },
            {
              "start": "2009-01-01",
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              "val": 1473000000,
              "accn": "0001193125-11-045778",
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            {
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              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
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              "filed": "2011-02-25"
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            {
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              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2596000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
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              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2596000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 4362000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            }
          ]
        }
      },
      "EquityMethodInvestmentSummarizedFinancialInformationNetSalesOrGrossRevenue": {
        "label": "Equity Method Investment, Summarized Financial Information, Net Sales or Gross Revenue (Deprecated 2011-01-31)",
        "description": "This item represents the disclosure of summarized financial information for unconsolidated subsidiaries and 50 percent-or-less owned entities accounted for using the equity method of accounting. If investments in common stock of corporate joint ventures or other investments accounted for under the equity method are, in the aggregate, material in relation to the financial position or results of operations of an investor, it may be necessary to present summarized information as to assets of the investee, or group of investments for which combined disclosure is appropriate, either by individual financial statement caption or in groups, as appropriate. Such summarized financial information may, at a minimum, include net sales or gross revenues.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 20466000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 17020000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 18981000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            }
          ]
        }
      },
      "EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets": {
        "label": "Equity Method Investment, Summarized Financial Information, Noncurrent Assets (Deprecated 2020-01-31)",
        "description": "The amount of noncurrent assets reported by an equity method investment of the entity.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 33841000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 34744000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 34744000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2011-12-31",
              "val": 46438000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 46438000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 51733000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities": {
        "label": "Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities (Deprecated 2020-01-31)",
        "description": "The amount of noncurrent liabilities reported by an equity method investment of the entity.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 13199000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 11270000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 11270000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2011-12-31",
              "val": 22521000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 22521000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 22000000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "EquityMethodInvestmentSummarizedFinancialInformationRevenue": {
        "label": "Equity Method Investment, Summarized Financial Information, Revenue (Deprecated 2020-01-31)",
        "description": "Amount of revenue from sale of product and rendering of service reported by equity method investee.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 17020000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 18981000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 18981000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20780000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20780000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 23449000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            }
          ]
        }
      },
      "EquityMethodInvestments": {
        "label": "Equity Method Investments",
        "description": "This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.",
        "units": {
          "USD": [
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              "end": "2008-12-31",
              "val": 4261000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "end": "2008-12-31",
              "val": 4261000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "end": "2008-12-31",
              "val": 4261000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-06-30",
              "val": 4780000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04",
              "frame": "CY2009Q2I"
            },
            {
              "end": "2009-09-30",
              "val": 4962000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29",
              "frame": "CY2009Q3I"
            },
            {
              "end": "2009-12-31",
              "val": 4980000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "end": "2009-12-31",
              "val": 4980000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28"
            },
            {
              "end": "2009-12-31",
              "val": 4980000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "end": "2009-12-31",
              "val": 4980000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "end": "2009-12-31",
              "val": 4980000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-03-31",
              "val": 5177000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
              "val": 5119000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 5374000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
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              "filed": "2010-10-28",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
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              "accn": "0001193125-11-045778",
              "fy": 2010,
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              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 5367000000,
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              "filed": "2011-04-28"
            },
            {
              "end": "2010-12-31",
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              "fy": 2011,
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            },
            {
              "end": "2010-12-31",
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              "filed": "2011-10-27"
            },
            {
              "end": "2010-12-31",
              "val": 5367000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-03-31",
              "val": 5649000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
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              "accn": "0001193125-11-200691",
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              "form": "10-Q",
              "filed": "2011-07-28",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
              "val": 5539000000,
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              "fy": 2011,
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              "form": "10-Q",
              "filed": "2011-10-27",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 5509000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
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              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 5509000000,
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              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26"
            },
            {
              "end": "2011-12-31",
              "val": 5509000000,
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              "fy": 2012,
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              "filed": "2012-07-26"
            },
            {
              "end": "2011-12-31",
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            {
              "end": "2011-12-31",
              "val": 5509000000,
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              "fy": 2012,
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              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-03-31",
              "val": 5965000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
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              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
              "val": 6486000000,
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              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
              "val": 6468000000,
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              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 6637000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 6637000000,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25"
            },
            {
              "end": "2012-12-31",
              "val": 6637000000,
              "accn": "0000764180-13-000064",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-07-24"
            },
            {
              "end": "2012-12-31",
              "val": 6637000000,
              "accn": "0000764180-13-000090",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-10-24"
            },
            {
              "end": "2012-12-31",
              "val": 6637000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-03-31",
              "val": 6749000000,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-06-30",
              "val": 6502000000,
              "accn": "0000764180-13-000064",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-07-24",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-09-30",
              "val": 6520000000,
              "accn": "0000764180-13-000090",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-10-24",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-12-31",
              "val": 6455000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 6455000000,
              "accn": "0000764180-14-000036",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-04-24"
            },
            {
              "end": "2013-12-31",
              "val": 6455000000,
              "accn": "0000764180-14-000059",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-07-22"
            },
            {
              "end": "2013-12-31",
              "val": 6455000000,
              "accn": "0000764180-14-000082",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-10-30"
            },
            {
              "end": "2013-12-31",
              "val": 6455000000,
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              "fy": 2014,
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              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-03-31",
              "val": 6734000000,
              "accn": "0000764180-14-000036",
              "fy": 2014,
              "fp": "Q1",
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              "filed": "2014-04-24",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-06-30",
              "val": 7033000000,
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              "fy": 2014,
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              "form": "10-Q",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-09-30",
              "val": 6640000000,
              "accn": "0000764180-14-000082",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-10-30",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-12-31",
              "val": 6183000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 6183000000,
              "accn": "0000764180-15-000034",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-04-23"
            },
            {
              "end": "2014-12-31",
              "val": 6183000000,
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              "fy": 2015,
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              "filed": "2015-07-29"
            },
            {
              "end": "2014-12-31",
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              "fy": 2015,
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              "filed": "2015-10-29"
            },
            {
              "end": "2014-12-31",
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              "fy": 2015,
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              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-03-31",
              "val": 5850000000,
              "accn": "0000764180-15-000034",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-04-23",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-06-30",
              "val": 6117000000,
              "accn": "0000764180-15-000071",
              "fy": 2015,
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              "form": "10-Q",
              "filed": "2015-07-29",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-09-30",
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              "form": "10-Q",
              "filed": "2015-10-29",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-12-31",
              "val": 5483000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
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              "filed": "2016-02-25"
            },
            {
              "end": "2015-12-31",
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            },
            {
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              "form": "10-K",
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              "end": "2023-06-30",
              "val": 160000000,
              "accn": "0000764180-23-000113",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-01",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 170000000,
              "accn": "0000764180-23-000126",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-10-26",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 165000000,
              "accn": "0000764180-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-27",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-06-30",
              "val": 150000000,
              "accn": "0000764180-24-000093",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-07-31",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 150000000,
              "accn": "0000764180-24-000102",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-10-31",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 150000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-12-31",
              "val": 90000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2025Q4I"
            }
          ]
        }
      },
      "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": "2009-12-31",
              "val": 464000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "end": "2009-12-31",
              "val": 464000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "end": "2009-12-31",
              "val": 464000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-06-30",
              "val": 464000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 464000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 464000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 464000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 464000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 464000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 464000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 464000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 464000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 464000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 465000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 465000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 465000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "end": "2015-12-31",
              "val": 465000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 465000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 465000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 465000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "end": "2017-12-31",
              "val": 465000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 654000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 654000000,
              "accn": "0000764180-19-000083",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-10-31"
            },
            {
              "end": "2018-12-31",
              "val": 654000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-09-30",
              "val": 1090000000,
              "accn": "0000764180-19-000083",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-10-31",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 1275000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 1275000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-12-31",
              "val": 1275000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26"
            },
            {
              "end": "2020-12-31",
              "val": 1275000000,
              "accn": "0000764180-22-000019",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2021-12-31",
              "val": 1260000000,
              "accn": "0000764180-22-000019",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25"
            },
            {
              "end": "2021-12-31",
              "val": 1260000000,
              "accn": "0000764180-23-000020",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-27",
              "frame": "CY2021Q4I"
            },
            {
              "end": "2022-12-31",
              "val": 1411000000,
              "accn": "0000764180-23-000020",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-02-27"
            },
            {
              "end": "2022-12-31",
              "val": 1411000000,
              "accn": "0000764180-23-000113",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-01"
            },
            {
              "end": "2022-12-31",
              "val": 1411000000,
              "accn": "0000764180-23-000126",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-10-26"
            },
            {
              "end": "2022-12-31",
              "val": 1411000000,
              "accn": "0000764180-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-27",
              "frame": "CY2022Q4I"
            },
            {
              "end": "2023-06-30",
              "val": 2821000000,
              "accn": "0000764180-23-000113",
              "fy": 2023,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2023-08-01",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2023-09-30",
              "val": 2841000000,
              "accn": "0000764180-23-000126",
              "fy": 2023,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2023-10-26",
              "frame": "CY2023Q3I"
            },
            {
              "end": "2023-12-31",
              "val": 2841000000,
              "accn": "0000764180-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-27"
            },
            {
              "end": "2023-12-31",
              "val": 2841000000,
              "accn": "0000764180-24-000093",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-07-31"
            },
            {
              "end": "2023-12-31",
              "val": 2841000000,
              "accn": "0000764180-24-000102",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-10-31"
            },
            {
              "end": "2023-12-31",
              "val": 2841000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26",
              "frame": "CY2023Q4I"
            },
            {
              "end": "2024-06-30",
              "val": 2621000000,
              "accn": "0000764180-24-000093",
              "fy": 2024,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2024-07-31",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2024-09-30",
              "val": 2621000000,
              "accn": "0000764180-24-000102",
              "fy": 2024,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2024-10-31",
              "frame": "CY2024Q3I"
            },
            {
              "end": "2024-12-31",
              "val": 2621000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26"
            },
            {
              "end": "2024-12-31",
              "val": 2621000000,
              "accn": "0000764180-25-000049",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-04-29"
            },
            {
              "end": "2024-12-31",
              "val": 2621000000,
              "accn": "0000764180-25-000111",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-07-30"
            },
            {
              "end": "2024-12-31",
              "val": 2621000000,
              "accn": "0000764180-25-000130",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-10-30"
            },
            {
              "end": "2024-12-31",
              "val": 2621000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2024Q4I"
            },
            {
              "end": "2025-03-31",
              "val": 2621000000,
              "accn": "0000764180-25-000049",
              "fy": 2025,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-04-29",
              "frame": "CY2025Q1I"
            },
            {
              "end": "2025-06-30",
              "val": 2622000000,
              "accn": "0000764180-25-000111",
              "fy": 2025,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-07-30",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-09-30",
              "val": 2626000000,
              "accn": "0000764180-25-000130",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-10-30",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-12-31",
              "val": 1656000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25"
            },
            {
              "end": "2025-12-31",
              "val": 1656000000,
              "accn": "0000764180-26-000058",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-04-30"
            },
            {
              "end": "2025-12-31",
              "val": 1656000000,
              "accn": "0000764180-26-000094",
              "fy": 2026,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2026-07-30",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-03-31",
              "val": 1676000000,
              "accn": "0000764180-26-000058",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2026-04-30",
              "frame": "CY2026Q1I"
            },
            {
              "end": "2026-06-30",
              "val": 1676000000,
              "accn": "0000764180-26-000094",
              "fy": 2026,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2026-07-30",
              "frame": "CY2026Q2I"
            }
          ]
        }
      },
      "FiniteLivedIntangibleAssetsUsefulLife": {
        "label": "Finite-Lived Intangible Assets, Useful Life (Deprecated 2012-01-31)",
        "description": "The useful life of all finite-lived intangible assets.",
        "units": {
          "pure": [
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 20,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 20,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            }
          ]
        }
      },
      "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": "2010-01-01",
              "end": "2010-09-30",
              "val": 20000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": 20000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26",
              "frame": "CY2015"
            }
          ]
        }
      },
      "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": "2010-01-01",
              "end": "2010-09-30",
              "val": 20000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 20000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26",
              "frame": "CY2014"
            }
          ]
        }
      },
      "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": "2010-01-01",
              "end": "2010-09-30",
              "val": 20000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
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          ]
        }
      },
      "FutureAmortizationExpenseYearThree": {
        "label": "Future Amortization Expense, Year Three (Deprecated 2012-01-31)",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
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            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 20000000,
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              "filed": "2012-02-16",
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            {
              "start": "2013-01-01",
              "end": "2013-12-31",
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      "FutureAmortizationExpenseYearTwo": {
        "label": "Future Amortization Expense, Year Two (Deprecated 2012-01-31)",
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              "end": "2010-09-30",
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              "fy": 2010,
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              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 20000000,
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              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
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            {
              "start": "2011-01-01",
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            {
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              "end": "2012-12-31",
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              "filed": "2010-08-26",
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      "GainLossOnDerivativeInstrumentsNetPretax": {
        "label": "Gain (Loss) on Derivative Instruments, Net, Pretax",
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            {
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              "fy": 2016,
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            {
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            {
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              "end": "2016-03-31",
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              "accn": "0000764180-16-000143",
              "fy": 2016,
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              "filed": "2016-04-28"
            },
            {
              "start": "2016-01-01",
              "end": "2016-03-31",
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              "accn": "0000764180-17-000050",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-02",
              "frame": "CY2016Q1"
            },
            {
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              "end": "2016-06-30",
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              "accn": "0000764180-16-000188",
              "fy": 2016,
              "fp": "Q2",
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            {
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              "end": "2016-06-30",
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              "fy": 2017,
              "fp": "Q2",
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            {
              "start": "2016-04-01",
              "end": "2016-06-30",
              "val": 117000000,
              "accn": "0000764180-16-000188",
              "fy": 2016,
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              "filed": "2016-07-27"
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              "val": 117000000,
              "accn": "0000764180-17-000099",
              "fy": 2017,
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              "filed": "2017-07-27",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
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              "val": 205000000,
              "accn": "0000764180-16-000211",
              "fy": 2016,
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              "filed": "2016-10-27"
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            {
              "start": "2016-07-01",
              "end": "2016-09-30",
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              "accn": "0000764180-16-000211",
              "fy": 2016,
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              "form": "10-Q",
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            {
              "start": "2017-01-01",
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              "form": "10-Q",
              "filed": "2017-05-02",
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          ]
        }
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      "GainLossRelatedToLitigationSettlement": {
        "label": "Gain (Loss) Related to Litigation Settlement",
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              "filed": "2019-02-26",
              "frame": "CY2017Q1"
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            {
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              "val": 0,
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              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -5000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-10-01",
              "end": "2017-12-31",
              "val": 0,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q4"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 68000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "start": "2018-01-01",
              "end": "2018-03-31",
              "val": 68000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2018Q1"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 77000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "start": "2018-04-01",
              "end": "2018-06-30",
              "val": 77000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
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              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2018Q2"
            },
            {
              "start": "2018-07-01",
              "end": "2018-09-30",
              "val": 0,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "start": "2018-07-01",
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              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2018Q3"
            },
            {
              "start": "2018-10-01",
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              "accn": "0000764180-19-000023",
              "fy": 2018,
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              "filed": "2019-02-26"
            },
            {
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              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2018Q4"
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          ]
        }
      },
      "GainsLossesOnExtinguishmentOfDebt": {
        "label": "Gain (Loss) on Extinguishment of Debt",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2007"
            },
            {
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              "val": 393000000,
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              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008Q1"
            },
            {
              "start": "2008-01-01",
              "end": "2008-06-30",
              "val": -393000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
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            {
              "start": "2008-01-01",
              "end": "2008-09-30",
              "val": -393000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
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            {
              "start": "2008-01-01",
              "end": "2008-12-31",
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              "accn": "0001193125-10-039027",
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              "filed": "2010-02-24"
            },
            {
              "start": "2008-01-01",
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              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
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            {
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              "filed": "2010-02-24",
              "frame": "CY2009"
            },
            {
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              "filed": "2013-02-27",
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            },
            {
              "start": "2011-01-01",
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              "accn": "0000764180-12-000030",
              "fy": 2012,
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              "filed": "2012-10-30"
            },
            {
              "start": "2011-07-01",
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              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30",
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            },
            {
              "start": "2011-01-01",
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              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
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              "end": "2011-12-31",
              "val": 0,
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              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
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              "accn": "0000764180-13-000024",
              "fy": 2012,
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              "filed": "2014-02-26",
              "frame": "CY2012Q1"
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              "filed": "2014-02-26",
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            {
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            {
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            {
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            {
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            {
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              "accn": "0000764180-13-000024",
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            {
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            {
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              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
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              "accn": "0000764180-13-000024",
              "fy": 2012,
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              "form": "10-K",
              "filed": "2013-02-27"
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            {
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              "accn": "0000764180-14-000025",
              "fy": 2013,
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              "filed": "2014-02-26",
              "frame": "CY2012Q4"
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            {
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            {
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              "fp": "FY",
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              "filed": "2015-02-25",
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            },
            {
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              "fp": "FY",
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            {
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            },
            {
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              "filed": "2020-02-25"
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              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 572000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 316000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 240000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 240000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 201000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureDeferredTaxesArisingFromLeveragedLeases": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Deferred Taxes Arising from Leveraged Leases",
        "description": "Taxes arising from arrangements meeting the criteria for classification as leveraged leases due to timing differences between accounting and tax income recognition.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 4126000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 3830000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 3830000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 2793000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 2793000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1654000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 1654000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1376000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 928000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 717000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 717000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 407000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "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": "2009-12-31",
              "val": 605000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 583000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 583000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 747000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 747000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 824000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 824000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 515000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 353000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 343000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 343000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 515000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentTaxCreditReceivable": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment Tax Credit Receivable",
        "description": "This element represents the receivable for the amount of the investment tax credit to be realized on the leveraged lease transaction.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": -1000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureNonrecourseDebtService": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Nonrecourse Debt Service",
        "description": "The portion of rentals receivable applicable to principal and interest on the nonrecourse debt.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 9200000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 8300000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 8300000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 6800000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 6800000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 3900000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 3900000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 2800000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 2800000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 2100000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "end": "2014-12-31",
              "val": 2100000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 1200000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "end": "2015-12-31",
              "val": 1200000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 800000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 800000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 600000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureRentalReceivablesGross": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Rental Receivables, Gross",
        "description": "The gross rentals receivable equal to the future cash flows from the lessee.",
        "units": {
          "USD": [
            {
              "end": "2015-12-31",
              "val": 1281000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 1060000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 1060000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 922000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureRentalReceivablesNet": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Rental Receivables, Net",
        "description": "This element represents leveraged lease rentals receivable, net of that portion of the rental applicable to principal and interest on the nonrecourse debt.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 5137000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 4659000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 4659000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 3926000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 3926000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 2378000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 2378000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1423000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 923000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 805000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 805000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 696000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
      "LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureResidualValueOfLeasedAssets": {
        "label": "Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Residual Value of Leased Assets",
        "description": "The estimate of the value of the leased asset at the end of the lease term.",
        "units": {
          "USD": [
            {
              "end": "2009-12-31",
              "val": 1411000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 1327000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2010-12-31",
              "val": 1327000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 1306000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 1306000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 1068000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 1068000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 1040000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 674000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 495000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 495000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 427000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            }
          ]
        }
      },
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              "accn": "0001193125-11-045778",
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            {
              "end": "2011-12-31",
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              "form": "10-K",
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              "end": "2017-12-31",
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              "fy": 2019,
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            {
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              "frame": "CY2023Q4I"
            },
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              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
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            {
              "end": "2025-12-31",
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              "form": "10-K",
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              "frame": "CY2011Q4I"
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              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
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            {
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              "fy": 2019,
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            {
              "end": "2024-12-31",
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              "accn": "0000764180-25-000019",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26",
              "frame": "CY2024Q4I"
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            {
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              "filed": "2026-02-25",
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      },
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        "label": "Long-Term Debt, Maturity, Year Two",
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            {
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              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
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            {
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              "accn": "0000764180-13-000024",
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              "fy": 2018,
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              "filed": "2019-02-26",
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              "filed": "2026-02-25",
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              "fy": 2011,
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              "filed": "2011-04-28"
            },
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              "form": "10-Q",
              "filed": "2011-07-28"
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              "filed": "2012-02-16",
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              "filed": "2011-04-28",
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              "filed": "2011-07-28",
              "frame": "CY2011Q2I"
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            {
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              "form": "10-Q",
              "filed": "2011-10-27",
              "frame": "CY2011Q3I"
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            {
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              "fp": "Q1",
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              "accn": "0001193125-12-185577",
              "fy": 2012,
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              "form": "10-Q",
              "filed": "2012-04-26",
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              "form": "10-Q",
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              "frame": "CY2012Q2I"
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              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30",
              "frame": "CY2012Q3I"
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            {
              "end": "2012-12-31",
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              "fy": 2012,
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              "form": "10-K",
              "filed": "2013-02-27"
            },
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              "val": 12419000000,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25"
            },
            {
              "end": "2012-12-31",
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              "accn": "0000764180-13-000064",
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              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 182000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "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": "2013-12-31",
              "val": 54000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 56000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 58000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 52000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 38000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 41000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "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": "2013-12-31",
              "val": 25000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 24000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 28000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 24000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 23000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 17000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "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": "2013-12-31",
              "val": 29000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 31000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 32000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 30000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 26000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 24000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "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": "2013-12-31",
              "val": 39000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 41000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 45000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 35000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 28000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 31000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "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": "2013-12-31",
              "val": 45000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 52000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 52000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 46000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 33000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 35000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "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": "2013-12-31",
              "val": 90000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 118000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 94000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 72000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 44000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 34000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsReceivable": {
        "label": "Operating Leases, Future Minimum Payments Receivable",
        "description": "Future minimum rental payments in aggregate as of the balance sheet date under operating leases.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 45000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 42000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 49000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 42000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 30000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 27000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsReceivableCurrent": {
        "label": "Operating Leases, Future Minimum Payments Receivable, Current",
        "description": "Future rental payments receivable within one year of the balance sheet date under an operating lease.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 3000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 5000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 6000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 5000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 5000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears": {
        "label": "Operating Leases, Future Minimum Payments Receivable, in Five Years",
        "description": "Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 5000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 4000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 5000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 6000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 5000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsReceivableInFourYears": {
        "label": "Operating Leases, Future Minimum Payments Receivable, in Four Years",
        "description": "Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 4000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 4000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 5000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 6000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 5000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears": {
        "label": "Operating Leases, Future Minimum Payments Receivable, in Three Years",
        "description": "Future rental payments receivable within the third year from the balance sheet date under an operating lease.",
        "units": {
          "USD": [
            {
              "end": "2013-12-31",
              "val": 5000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 4000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-12-31",
              "val": 5000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-12-31",
              "val": 5000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-12-31",
              "val": 5000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-12-31",
              "val": 5000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2018Q4I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears": {
        "label": "Operating Leases, Future Minimum Payments Receivable, in Two Years",
        "description": "Future rental payments receivable within the second year from the balance sheet date under an operating lease.",
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              "fp": "FY",
              "form": "10-K",
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              "end": "2014-12-31",
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              "form": "10-K",
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              "fy": 2016,
              "fp": "FY",
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              "filed": "2017-02-27",
              "frame": "CY2016Q4I"
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            {
              "end": "2017-12-31",
              "val": 5000000,
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              "fy": 2017,
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              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
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              "end": "2014-12-31",
              "val": 20000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
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              "end": "2015-12-31",
              "val": 23000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
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              "filed": "2016-02-25",
              "frame": "CY2015Q4I"
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              "fy": 2016,
              "fp": "FY",
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              "end": "2017-12-31",
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              "form": "10-K",
              "filed": "2018-02-27",
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              "end": "2018-12-31",
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              "filed": "2019-02-26",
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      },
      "OperatingLossCarryforwards": {
        "label": "Operating Loss Carryforwards",
        "description": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
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              "val": 1212000000,
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              "fy": 2012,
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              "filed": "2013-02-27",
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        "label": "Other Accrued Liabilities (Deprecated 2009-01-31)",
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      "OtherAccruedLiabilitiesCurrent": {
        "label": "Other Accrued Liabilities, Current",
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              "frame": "CY2010Q2I"
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              "end": "2023-12-31",
              "val": -3000000,
              "accn": "0000764180-24-000018",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-02-27"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -3000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26"
            },
            {
              "start": "2023-01-01",
              "end": "2023-12-31",
              "val": -3000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2023"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -1000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26"
            },
            {
              "start": "2024-01-01",
              "end": "2024-12-31",
              "val": -1000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2024"
            },
            {
              "start": "2025-01-01",
              "end": "2025-12-31",
              "val": 4000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2025"
            }
          ]
        }
      },
      "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": "2007-01-01",
              "end": "2007-12-31",
              "val": 750000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2007"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -1385000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -1385000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -1385000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -1385000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 39000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 60000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 375000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 375000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 375000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 375000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 375000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 375000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 31000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28",
              "frame": "CY2010Q1"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": 57000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": 77000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 35000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 35000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 35000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 35000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 35000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 32000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 64000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 100000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -251000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            }
          ]
        }
      },
      "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": "2010-01-01",
              "end": "2010-12-31",
              "val": -40000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -249000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -315000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            }
          ]
        }
      },
      "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": {
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              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": -20000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2007"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -177000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -177000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -177000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": -177000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            }
          ]
        }
      },
      "OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease": {
        "label": "Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (Deprecated 2012-01-31)",
        "description": "Adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity, net of tax.",
        "units": {
          "USD": [
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 782000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
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              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2007"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 240000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 240000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
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            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 240000000,
              "accn": "0001193125-09-217203",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 240000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 1000000,
              "accn": "0001193125-09-163472",
              "fy": 2009,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 3000000,
              "accn": "0001193125-09-217203",
              "fy": 2009,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3000000,
              "accn": "0001193125-10-239023",
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              "fp": "Q3",
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              "filed": "2010-10-28"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3000000,
              "accn": "0001193125-10-197793",
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              "filed": "2010-08-26"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3000000,
              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 3000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "start": "2010-01-01",
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              "val": 1000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 1000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 1000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 1000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": -1000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -2000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-04-01",
              "end": "2012-06-30",
              "val": 0,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26",
              "frame": "CY2012Q2"
            }
          ]
        }
      },
      "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": "2011-01-01",
              "end": "2011-12-31",
              "val": -7000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -35000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -35000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -35000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
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              "filed": "2010-08-26",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-09-30",
              "val": 169000000,
              "accn": "0001193125-10-239023",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-12-31",
              "val": 160000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 160000000,
              "accn": "0001193125-11-283665",
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              "fp": "Q3",
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              "filed": "2011-10-27"
            },
            {
              "end": "2010-12-31",
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              "accn": "0001193125-11-200691",
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              "fp": "Q2",
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            },
            {
              "end": "2010-12-31",
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              "accn": "0001193125-11-114987",
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            {
              "end": "2010-12-31",
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              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
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            },
            {
              "end": "2011-03-31",
              "val": 174000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
              "val": 188000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
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              "form": "10-Q",
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              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-09-30",
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              "accn": "0001193125-11-283665",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-12-31",
              "val": 170000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26"
            },
            {
              "end": "2011-12-31",
              "val": 170000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 170000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 170000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            },
            {
              "end": "2011-12-31",
              "val": 170000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
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              "filed": "2012-07-26"
            },
            {
              "end": "2012-03-31",
              "val": 178000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
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              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-09-30",
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              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-12-31",
              "val": 173000000,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 173000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
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              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2013-03-31",
              "val": 174000000,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25",
              "frame": "CY2013Q1I"
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          ]
        }
      },
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        "label": "Other Inventory, Net of Reserves",
        "description": "Amount, after of valuation reserves and allowances, of inventory, classified as other, expected to be sold, or consumed within one year or operating cycle, if longer.",
        "units": {
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              "end": "2012-12-31",
              "val": 173000000,
              "accn": "0000764180-13-000064",
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              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-07-24",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-06-30",
              "val": 182000000,
              "accn": "0000764180-13-000064",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-07-24",
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        "label": "Other Liabilities",
        "description": "Amount of liabilities classified as other.",
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              "val": 102000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2008Q4I"
            },
            {
              "end": "2008-12-31",
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              "accn": "0001193125-09-217203",
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2009-10-29"
            },
            {
              "end": "2008-12-31",
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              "accn": "0001193125-09-163472",
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            },
            {
              "end": "2009-12-31",
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              "accn": "0001193125-10-096771",
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            },
            {
              "end": "2010-03-31",
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              "accn": "0001193125-10-096771",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-04-28",
              "frame": "CY2010Q1I"
            },
            {
              "end": "2010-06-30",
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              "accn": "0001193125-10-197793",
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              "accn": "0001193125-10-239023",
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              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
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            {
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              "filed": "2011-10-27"
            },
            {
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              "accn": "0001193125-11-200691",
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              "fp": "Q2",
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              "filed": "2011-07-28"
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            {
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              "accn": "0001193125-11-114987",
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            },
            {
              "end": "2011-03-31",
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              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-06-30",
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              "accn": "0001193125-11-200691",
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            },
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              "accn": "0001193125-11-283665",
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              "form": "10-Q",
              "filed": "2011-10-27",
              "frame": "CY2011Q3I"
            },
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              "accn": "0001193125-12-185577",
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              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26"
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              "accn": "0001193125-12-064660",
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            },
            {
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              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 330000000,
              "accn": "0000764180-12-000030",
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              "form": "10-Q",
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              "accn": "0000764180-12-000009",
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            },
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              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-06-30",
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              "accn": "0000764180-12-000009",
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              "form": "10-Q",
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              "frame": "CY2012Q2I"
            },
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            },
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              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
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              "val": 1208000000,
              "accn": "0001193125-09-163472",
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              "form": "10-Q/A",
              "filed": "2009-08-04"
            },
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              "end": "2008-12-31",
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              "accn": "0001193125-09-217203",
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              "fp": "Q3",
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              "filed": "2009-10-29"
            },
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              "accn": "0001193125-10-039027",
              "fy": 2009,
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              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2008Q4I"
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            },
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              "accn": "0001193125-10-239023",
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              "accn": "0001193125-11-045778",
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              "fp": "Q1",
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            },
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              "accn": "0001193125-11-200691",
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            },
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              "fp": "Q3",
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              "frame": "CY2012Q3I"
            },
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              "end": "2023-12-31",
              "val": 1079000000,
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              "end": "2023-12-31",
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              "end": "2025-06-30",
              "val": 935000000,
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              "end": "2025-12-31",
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              "val": 935000000,
              "accn": "0000764180-26-000058",
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              "end": "2026-06-30",
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              "accn": "0000764180-26-000094",
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              "frame": "CY2026Q2I"
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      },
      "OtherPostretirementDefinedBenefitPlanNoncurrentLiabilities": {
        "label": "Other Postretirement Defined Benefit Plan, Noncurrent Liabilities (Deprecated 2009-01-31)",
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              "end": "2008-12-31",
              "val": 2208000000,
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              "fp": "Q2",
              "form": "10-Q/A",
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              "frame": "CY2008Q4I"
            },
            {
              "end": "2009-06-30",
              "val": 2352000000,
              "accn": "0001193125-09-163472",
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              "form": "10-Q/A",
              "filed": "2009-08-04",
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          ]
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      "OtherReceivables": {
        "label": "Other Receivables",
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              "form": "10-Q",
              "filed": "2012-04-26",
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            {
              "end": "2012-06-30",
              "val": 29000000,
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              "frame": "CY2012Q2I"
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              "end": "2012-09-30",
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              "accn": "0000764180-12-000030",
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            {
              "end": "2013-03-31",
              "val": 42000000,
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              "frame": "CY2013Q1I"
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              "filed": "2013-07-24",
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      "OtherRestructuringCosts": {
        "label": "Other Restructuring Costs",
        "description": "Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.",
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              "end": "2009-06-30",
              "val": -63000000,
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              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
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              "end": "2009-09-30",
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              "filed": "2011-02-25",
              "frame": "CY2009Q3"
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            {
              "start": "2009-10-01",
              "end": "2009-12-31",
              "val": 10000000,
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              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4"
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            {
              "start": "2010-01-01",
              "end": "2010-03-31",
              "val": 17000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q1"
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            {
              "start": "2010-04-01",
              "end": "2010-06-30",
              "val": 47000000,
              "accn": "0001193125-11-045778",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q2"
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            {
              "start": "2010-07-01",
              "end": "2010-09-30",
              "val": 21000000,
              "accn": "0001193125-11-045778",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q3"
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              "start": "2010-10-01",
              "end": "2010-12-31",
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              "accn": "0001193125-11-045778",
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              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4"
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              "end": "2016-03-31",
              "val": 2000000,
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              "form": "10-Q",
              "filed": "2017-05-02",
              "frame": "CY2016Q1"
            },
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              "start": "2016-01-01",
              "end": "2016-06-30",
              "val": 3000000,
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              "filed": "2017-07-27"
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              "filed": "2017-07-27",
              "frame": "CY2016Q2"
            },
            {
              "start": "2016-01-01",
              "end": "2016-09-30",
              "val": 7000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-10-26"
            },
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              "start": "2016-07-01",
              "end": "2016-09-30",
              "val": 4000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-10-26",
              "frame": "CY2016Q3"
            },
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              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 24000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 24000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
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              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "start": "2016-01-01",
              "end": "2016-12-31",
              "val": 24000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2016"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 23000000,
              "accn": "0000764180-17-000050",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-02"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": 23000000,
              "accn": "0000764180-18-000038",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-04-26",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 40000000,
              "accn": "0000764180-17-000099",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-07-27"
            },
            {
              "start": "2017-01-01",
              "end": "2017-06-30",
              "val": 40000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-07-26"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 17000000,
              "accn": "0000764180-17-000099",
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              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-07-27"
            },
            {
              "start": "2017-04-01",
              "end": "2017-06-30",
              "val": 17000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-07-26",
              "frame": "CY2017Q2"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 47000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
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              "form": "10-Q",
              "filed": "2017-10-26"
            },
            {
              "start": "2017-01-01",
              "end": "2017-09-30",
              "val": 47000000,
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              "accn": "0000764180-17-000126",
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              "form": "10-Q",
              "filed": "2017-10-26"
            },
            {
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              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-10-25",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 45000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": 45000000,
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              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
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              "end": "2017-12-31",
              "val": 45000000,
              "accn": "0000764180-20-000018",
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              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2017"
            },
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              "val": 1000000,
              "accn": "0000764180-18-000038",
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              "form": "10-Q",
              "filed": "2018-04-26"
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            {
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              "val": 1000000,
              "accn": "0000764180-19-000037",
              "fy": 2019,
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              "form": "10-Q",
              "filed": "2019-04-25",
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            },
            {
              "start": "2018-01-01",
              "end": "2018-06-30",
              "val": 5000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
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              "form": "10-Q",
              "filed": "2018-07-26"
            },
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              "val": 5000000,
              "accn": "0000764180-19-000070",
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              "end": "2018-06-30",
              "val": 4000000,
              "accn": "0000764180-18-000072",
              "fy": 2018,
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              "form": "10-Q",
              "filed": "2018-07-26",
              "frame": "CY2018Q2"
            },
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              "end": "2018-09-30",
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              "accn": "0000764180-18-000095",
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              "filed": "2018-10-25"
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              "val": 4000000,
              "accn": "0000764180-19-000083",
              "fy": 2019,
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              "filed": "2019-10-31"
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              "end": "2018-09-30",
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              "accn": "0000764180-18-000095",
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              "form": "10-Q",
              "filed": "2018-10-25",
              "frame": "CY2018Q3"
            },
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              "end": "2018-12-31",
              "val": 67000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
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              "filed": "2019-02-26"
            },
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              "filed": "2020-02-25"
            },
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              "fp": "FY",
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              "filed": "2021-02-26",
              "frame": "CY2018"
            },
            {
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              "end": "2019-03-31",
              "val": 9000000,
              "accn": "0000764180-19-000037",
              "fy": 2019,
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              "form": "10-Q",
              "filed": "2019-04-25"
            },
            {
              "start": "2019-01-01",
              "end": "2019-03-31",
              "val": 9000000,
              "accn": "0000764180-20-000048",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-04-30",
              "frame": "CY2019Q1"
            },
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              "end": "2019-06-30",
              "val": 21000000,
              "accn": "0000764180-19-000070",
              "fy": 2019,
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              "form": "10-Q",
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            },
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              "end": "2019-06-30",
              "val": 21000000,
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              "accn": "0000764180-20-000074",
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              "form": "10-Q",
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            },
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              "end": "2019-09-30",
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              "end": "2019-09-30",
              "val": 4000000,
              "accn": "0000764180-20-000106",
              "fy": 2020,
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            },
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              "end": "2019-12-31",
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              "fy": 2019,
              "fp": "FY",
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              "filed": "2020-02-25"
            },
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            {
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            {
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      "PaymentsToAcquireEquityMethodInvestments": {
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        "label": "Payments to Acquire Finance Receivables",
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        "label": "Payments to Acquire Investments",
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              "filed": "2021-02-26"
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              "val": 79000000,
              "accn": "0000764180-17-000050",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-02"
            },
            {
              "end": "2016-12-31",
              "val": 79000000,
              "accn": "0000764180-17-000099",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-07-27"
            },
            {
              "end": "2016-12-31",
              "val": 79000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-10-26"
            },
            {
              "end": "2016-12-31",
              "val": 79000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "end": "2016-12-31",
              "val": 79000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2016Q4I"
            },
            {
              "end": "2017-03-31",
              "val": 63000000,
              "accn": "0000764180-17-000050",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-02",
              "frame": "CY2017Q1I"
            },
            {
              "end": "2017-06-30",
              "val": 47000000,
              "accn": "0000764180-17-000099",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-07-27",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-09-30",
              "val": 42000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-10-26",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-12-31",
              "val": 33000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "end": "2017-12-31",
              "val": 33000000,
              "accn": "0000764180-18-000038",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-04-26"
            },
            {
              "end": "2017-12-31",
              "val": 33000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "end": "2017-12-31",
              "val": 33000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-03-31",
              "val": 26000000,
              "accn": "0000764180-18-000038",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-04-26",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-12-31",
              "val": 155000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26"
            },
            {
              "end": "2018-12-31",
              "val": 155000000,
              "accn": "0000764180-19-000037",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-04-25"
            },
            {
              "end": "2018-12-31",
              "val": 155000000,
              "accn": "0000764180-19-000070",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-07-30"
            },
            {
              "end": "2018-12-31",
              "val": 155000000,
              "accn": "0000764180-19-000083",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-10-31"
            },
            {
              "end": "2018-12-31",
              "val": 155000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25"
            },
            {
              "end": "2018-12-31",
              "val": 155000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-03-31",
              "val": 160000000,
              "accn": "0000764180-19-000037",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-04-25",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-06-30",
              "val": 120000000,
              "accn": "0000764180-19-000070",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-07-30",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-09-30",
              "val": 88000000,
              "accn": "0000764180-19-000083",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-10-31",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-12-31",
              "val": 67000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25"
            },
            {
              "end": "2019-12-31",
              "val": 67000000,
              "accn": "0000764180-20-000048",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-04-30"
            },
            {
              "end": "2019-12-31",
              "val": 67000000,
              "accn": "0000764180-20-000074",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-07-30"
            },
            {
              "end": "2019-12-31",
              "val": 67000000,
              "accn": "0000764180-20-000106",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-10-30"
            },
            {
              "end": "2019-12-31",
              "val": 67000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-03-31",
              "val": 44000000,
              "accn": "0000764180-20-000048",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-04-30",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-06-30",
              "val": 26000000,
              "accn": "0000764180-20-000074",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2020-07-30",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2020-09-30",
              "val": 25000000,
              "accn": "0000764180-20-000106",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-10-30",
              "frame": "CY2020Q3I"
            },
            {
              "end": "2020-12-31",
              "val": 16000000,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26",
              "frame": "CY2020Q4I"
            },
            {
              "end": "2024-12-31",
              "val": 35000000,
              "accn": "0000764180-25-000019",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-02-26",
              "frame": "CY2024Q4I"
            }
          ]
        }
      },
      "RestructuringReserveAccrualAdjustment": {
        "label": "Restructuring Reserve, Accrual Adjustment (Deprecated 2016-01-31)",
        "description": "Amount of (expense) reversal of expense related to a previously accrued restructuring cost liability. Excludes adjustments for costs incurred, costs settled, and foreign currency translation adjustments.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -115000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -5000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -11000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -11000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 3000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 4000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 6000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -48000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -48000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -11000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-06-30",
              "val": -25000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -29000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": -46000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            }
          ]
        }
      },
      "RestructuringReservePeriodExpense": {
        "label": "Restructuring Reserve, Period Expense (Deprecated 2012-01-31)",
        "description": "Reserve increase representing the amount charged against earnings in the period for a specified incurred and estimated type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 36000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 2000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 3000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 3000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 222000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 21000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-06-30",
              "val": 37000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            }
          ]
        }
      },
      "RestructuringReserveSettledWithCash": {
        "label": "Restructuring Reserve, Settled With Cash (Deprecated 2013-01-31)",
        "description": "Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": -426000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-06-30",
              "val": -148000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2010-01-01",
              "end": "2010-09-30",
              "val": -198000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 227000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -227000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 18000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 28000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 32000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 44000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 44000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": 35000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-06-30",
              "val": -71000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-09-30",
              "val": -106000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 134000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            }
          ]
        }
      },
      "RestructuringSettlementAndImpairmentProvisions": {
        "label": "Restructuring, Settlement and Impairment Provisions",
        "description": "Amount of restructuring charges, remediation cost, and asset impairment loss.",
        "units": {
          "USD": [
            {
              "start": "2007-01-01",
              "end": "2007-12-31",
              "val": 442000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24",
              "frame": "CY2007"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 449000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 449000000,
              "accn": "0001193125-10-039027",
              "fy": 2009,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-02-24"
            },
            {
              "start": "2009-01-01",
              "end": "2009-03-31",
              "val": 128000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q1"
            },
            {
              "start": "2009-01-01",
              "end": "2009-06-30",
              "val": 166000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 38000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q2"
            },
            {
              "start": "2009-04-01",
              "end": "2009-06-30",
              "val": 38000000,
              "accn": "0001193125-10-197793",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q/A",
              "filed": "2010-08-26"
            },
            {
              "start": "2009-01-01",
              "end": "2009-09-30",
              "val": 299000000,
              "accn": "0001193125-10-239023",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-10-28"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 133000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q3"
            },
            {
              "start": "2009-07-01",
              "end": "2009-09-30",
              "val": 133000000,
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              "val": 11833000000,
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            {
              "end": "2012-12-31",
              "val": 23.55,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-12-31",
              "val": 23.55,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-12-31",
              "val": 27.77,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2013-12-31",
              "val": 27.77,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-12-31",
              "val": 32.83,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014Q4I"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period",
        "description": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.",
        "units": {
          "shares": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -1694518,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 2259327,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 2747426,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 2573491,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 2187921,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value",
        "description": "Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.",
        "units": {
          "USD": [
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 46000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 33000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 56000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 56000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 81000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 81000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 89000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 89000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 86000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value",
        "description": "The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.",
        "units": {
          "USD/shares": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 64.34,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 22.41,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 16.97,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": 20.35,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": 23.1,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2014"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant",
        "description": "The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.",
        "units": {
          "shares": [
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              "end": "2010-12-31",
              "val": 54955609,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 48822217,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 47221911,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValue": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value (Deprecated 2011-01-31)",
        "description": "The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.",
        "units": {
          "USD": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 37000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number",
        "description": "The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.",
        "units": {
          "shares": [
            {
              "end": "2009-12-31",
              "val": 12401903,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 2675593,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 2675593,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2011-12-31",
              "val": 4590,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 4590,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price",
        "description": "The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.",
        "units": {
          "USD/shares": [
            {
              "end": "2009-12-31",
              "val": 10.74,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 10.95,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2010-12-31",
              "val": 10.95,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "end": "2011-12-31",
              "val": 12.48,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "end": "2011-12-31",
              "val": 12.48,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-12-31",
              "val": 0,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012Q4I"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term (Deprecated 2012-01-31)",
        "description": "The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.",
        "units": {
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              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 4,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            }
          ],
          "pure": [
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              "end": "2010-12-31",
              "val": 3,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriod": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (Deprecated 2011-01-31)",
        "description": "The decrease in the number of reserved shares that could potentially be issued attributable to the exercise or conversion during the reporting period of previously issued stock options under the option plan.",
        "units": {
          "shares": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -9707570,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value",
        "description": "Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.",
        "units": {
          "USD": [
            {
              "start": "2008-01-01",
              "end": "2008-12-31",
              "val": 119000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2009-01-01",
              "end": "2009-12-31",
              "val": 87000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2009"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 110000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 110000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 37000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 37000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (Deprecated 2012-01-31)",
        "description": "The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 10.69,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 10.95,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period",
        "description": "The addition or reduction in the number of reserved shares that could potentially be issued under the option plan attributable to reasons other than grants, exercises, forfeitures, and expirations during the reporting period.",
        "units": {
          "shares": [
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": -18740,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -33965,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherShareIncreaseDecreaseInPeriodWeightedAverageExercisePrice": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Share Increase (Decrease) in Period, Weighted Average Exercise Price (Deprecated 2012-01-31)",
        "description": "The weighted average price at which grantees could acquire or could have acquired the underlying shares with respect to any other type of change in shares reserved for issuance under the stock option plan during the reporting period.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 7.53,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-12-31",
              "val": 10.23,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4I"
            }
          ]
        }
      },
      "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber": {
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number",
        "description": "Number of options outstanding, including both vested and non-vested options.",
        "units": {
          "shares": [
            {
              "end": "2012-02-29",
              "val": 0,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27"
            },
            {
              "end": "2012-02-29",
              "val": 0,
              "accn": "0000764180-13-000036",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-04-25"
            },
            {
              "end": "2012-02-29",
              "val": 0,
              "accn": "0000764180-13-000064",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-07-24"
            },
            {
              "end": "2012-02-29",
              "val": 0,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "end": "2012-02-29",
              "val": 0,
              "accn": "0000764180-15-000022",
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              "val": 186000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 186000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 186000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 186000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 186000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 26000000,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-01-01",
              "end": "2011-06-30",
              "val": 55000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 78000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 94000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 94000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 94000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2011"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 94000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-03-31",
              "val": -24000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26",
              "frame": "CY2012Q1"
            },
            {
              "start": "2012-01-01",
              "end": "2012-06-30",
              "val": -11000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            },
            {
              "start": "2012-01-01",
              "end": "2012-12-31",
              "val": 24000000,
              "accn": "0000764180-13-000024",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-02-27",
              "frame": "CY2012"
            }
          ]
        }
      },
      "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": "2008-01-01",
              "end": "2008-12-31",
              "val": 53450000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008"
            },
            {
              "start": "2011-01-01",
              "end": "2011-03-31",
              "val": 0,
              "accn": "0001193125-11-114987",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-04-28",
              "frame": "CY2011Q1"
            },
            {
              "start": "2011-04-01",
              "end": "2011-06-30",
              "val": 22800000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 37600000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-09-30",
              "val": 37600000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 14800000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 49300000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2011-10-01",
              "end": "2011-12-31",
              "val": 11700000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4"
            }
          ]
        }
      },
      "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": "2011-04-01",
              "end": "2011-06-30",
              "val": 616000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28",
              "frame": "CY2011Q2"
            },
            {
              "start": "2011-07-01",
              "end": "2011-09-30",
              "val": 384000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": 1300000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011"
            },
            {
              "start": "2011-10-01",
              "end": "2011-12-31",
              "val": 327000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2011Q4"
            }
          ]
        }
      },
      "StockRepurchaseProgramAuthorizedAmount": {
        "label": "Stock Repurchase Program, Authorized Amount (Deprecated 2014-01-31)",
        "description": "Amount of a stock repurchase plan authorized by an entity's Board of Directors.",
        "units": {
          "USD": [
            {
              "start": "2011-01-01",
              "end": "2011-01-31",
              "val": 1000000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16"
            },
            {
              "start": "2011-01-01",
              "end": "2011-01-31",
              "val": 1000000000,
              "accn": "0001193125-11-283665",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-10-27"
            },
            {
              "start": "2011-01-01",
              "end": "2011-01-31",
              "val": 1000000000,
              "accn": "0001193125-11-200691",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-07-28"
            },
            {
              "start": "2011-10-01",
              "end": "2011-10-31",
              "val": 1000000000,
              "accn": "0001193125-12-185577",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-04-26"
            },
            {
              "start": "2011-10-01",
              "end": "2011-10-31",
              "val": 1000000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            },
            {
              "start": "2011-10-01",
              "end": "2011-10-31",
              "val": 1000000000,
              "accn": "0000764180-12-000009",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-07-26"
            }
          ]
        }
      },
      "StockRepurchaseProgramAuthorizedAmount1": {
        "label": "Stock Repurchase Program, Authorized Amount",
        "description": "Amount of stock repurchase plan authorized.",
        "units": {
          "USD": [
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000764180-21-000037",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-02-26"
            },
            {
              "end": "2020-12-31",
              "val": 0,
              "accn": "0000764180-22-000019",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-02-25",
              "frame": "CY2020Q4I"
            }
          ]
        }
      },
      "StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount": {
        "label": "Stock Repurchase Program, Remaining Authorized Repurchase Amount (Deprecated 2014-01-31)",
        "description": "Amount remaining of a stock repurchase plan authorized by an entity's Board of Directors.",
        "units": {
          "USD": [
            {
              "start": "2012-10-21",
              "end": "2012-10-23",
              "val": 550000000,
              "accn": "0000764180-12-000030",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-10-30"
            }
          ]
        }
      },
      "SubsidiaryOrEquityMethodInvesteePricePerShare": {
        "label": "Subsidiary or Equity Method Investee, Price-Per-Share (Deprecated 2013-01-31)",
        "description": "Price-per-share of common or preferred stock issued or sold by the subsidiary or equity method investee.",
        "units": {
          "USD": [
            {
              "end": "2008-03-28",
              "val": 73.83,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25",
              "frame": "CY2008Q1I"
            }
          ]
        }
      },
      "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": "2010-01-01",
              "end": "2010-12-31",
              "val": 216000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-02-25"
            },
            {
              "start": "2010-01-01",
              "end": "2010-12-31",
              "val": 216000000,
              "accn": "0001193125-12-064660",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-02-16",
              "frame": "CY2010"
            },
            {
              "start": "2011-01-01",
              "end": "2011-12-31",
              "val": -77000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2011"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -53000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2012-07-01",
              "end": "2012-09-30",
              "val": -53000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25",
              "frame": "CY2012Q3"
            },
            {
              "start": "2013-07-01",
              "end": "2013-09-30",
              "val": -25000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26",
              "frame": "CY2013Q3"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -39000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -39000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2013-01-01",
              "end": "2013-12-31",
              "val": -39000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2013"
            },
            {
              "start": "2013-10-01",
              "end": "2013-12-31",
              "val": -14000000,
              "accn": "0000764180-14-000025",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-02-26"
            },
            {
              "start": "2013-10-01",
              "end": "2013-12-31",
              "val": -25000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2013Q4"
            },
            {
              "start": "2014-07-01",
              "end": "2014-09-30",
              "val": -19000000,
              "accn": "0000764180-15-000094",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-10-29",
              "frame": "CY2014Q3"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -14000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -14000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "start": "2014-01-01",
              "end": "2014-12-31",
              "val": -14000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27",
              "frame": "CY2014"
            },
            {
              "start": "2014-10-01",
              "end": "2014-12-31",
              "val": 5000000,
              "accn": "0000764180-15-000022",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-02-25"
            },
            {
              "start": "2014-10-01",
              "end": "2014-12-31",
              "val": 5000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2014Q4"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 41000000,
              "accn": "0000764180-15-000094",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-10-29"
            },
            {
              "start": "2015-07-01",
              "end": "2015-09-30",
              "val": 41000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25",
              "frame": "CY2015Q3"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -59000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "start": "2015-01-01",
              "end": "2015-12-31",
              "val": -59000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2015"
            },
            {
              "start": "2015-10-01",
              "end": "2015-12-31",
              "val": 24000000,
              "accn": "0000764180-16-000128",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-02-25"
            },
            {
              "start": "2015-10-01",
              "end": "2015-12-31",
              "val": 24000000,
              "accn": "0000764180-17-000028",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-02-27"
            },
            {
              "start": "2015-10-01",
              "end": "2015-12-31",
              "val": 24000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27",
              "frame": "CY2015Q4"
            },
            {
              "start": "2017-01-01",
              "end": "2017-03-31",
              "val": -42000000,
              "accn": "0000764180-17-000050",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-05-02",
              "frame": "CY2017Q1"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 36000000,
              "accn": "0000764180-17-000126",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-10-26"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": 232000000,
              "accn": "0000764180-18-000028",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-02-27"
            },
            {
              "start": "2017-07-01",
              "end": "2017-09-30",
              "val": -232000000,
              "accn": "0000764180-19-000023",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-02-26",
              "frame": "CY2017Q3"
            },
            {
              "start": "2017-01-01",
              "end": "2017-12-31",
              "val": -232000000,
              "accn": "0000764180-20-000018",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-02-25",
              "frame": "CY2017"
            },
            {
              "end": "2025-09-29",
              "val": -45000000,
              "accn": "0000764180-25-000130",
              "fy": 2025,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2025-10-30"
            },
            {
              "end": "2025-09-29",
              "val": -45000000,
              "accn": "0000764180-26-000017",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-02-25",
              "frame": "CY2025Q3I"
            }
          ]
        }
      },
      "TaxCreditCarryforwardAmount": {
        "label": "Tax Credit Carryforward, Amount",
        "description": "The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
        "units": {
          "USD": [
            {
              "end": "2010-12-31",
              "val": 82000000,
              "accn": "0001193125-11-045778",
              "fy": 2010,
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              "fy": 2011,
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            {
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            {
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            {
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            },
            {
              "start": "2018-01-01",
              "end": "2018-09-30",
              "val": 1891000000,
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              "fy": 2019,
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              "form": "10-Q",
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            },
            {
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              "end": "2018-09-30",
              "val": 1883000000,
              "accn": "0000764180-18-000095",
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              "filed": "2018-10-25"
            },
            {
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              "end": "2018-09-30",
              "val": 1883000000,
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              "val": 1874000000,
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            },
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              "end": "2019-06-30",
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              "end": "2019-06-30",
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            {
              "start": "2019-07-01",
              "end": "2019-09-30",
              "val": 1868000000,
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              "filed": "2019-10-31"
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            {
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            },
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        "label": "Weighted Average Number of Shares Outstanding, Basic",
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              "filed": "2011-10-27",
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            },
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              "filed": "2011-02-25"
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              "frame": "CY2010"
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