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              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-10-06"
            },
            {
              "end": "2017-05-31",
              "val": 1000000,
              "accn": "0000723531-17-000059",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-12-21"
            },
            {
              "end": "2017-05-31",
              "val": 1000000,
              "accn": "0000723531-18-000009",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-03-28"
            },
            {
              "end": "2017-05-31",
              "val": 1000000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2017-08-31",
              "val": 70100000,
              "accn": "0000723531-17-000038",
              "fy": 2018,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2017-10-06",
              "frame": "CY2017Q3I"
            },
            {
              "end": "2017-11-30",
              "val": 348300000,
              "accn": "0000723531-17-000059",
              "fy": 2018,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2017-12-21",
              "frame": "CY2017Q4I"
            },
            {
              "end": "2018-02-28",
              "val": 334300000,
              "accn": "0000723531-18-000009",
              "fy": 2018,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2018-03-28",
              "frame": "CY2018Q1I"
            },
            {
              "end": "2018-05-31",
              "val": 331300000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20"
            },
            {
              "end": "2018-05-31",
              "val": 331300000,
              "accn": "0000723531-18-000034",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-10-05"
            },
            {
              "end": "2018-05-31",
              "val": 331300000,
              "accn": "0000723531-18-000048",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-12-21"
            },
            {
              "end": "2018-05-31",
              "val": 331300000,
              "accn": "0000723531-19-000015",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-03-29"
            },
            {
              "end": "2018-05-31",
              "val": 331300000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2018-08-31",
              "val": 336600000,
              "accn": "0000723531-18-000034",
              "fy": 2019,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2018-10-05",
              "frame": "CY2018Q3I"
            },
            {
              "end": "2018-11-30",
              "val": 1253900000,
              "accn": "0000723531-18-000048",
              "fy": 2019,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2018-12-21",
              "frame": "CY2018Q4I"
            },
            {
              "end": "2019-02-28",
              "val": 1319600000,
              "accn": "0000723531-19-000015",
              "fy": 2019,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2019-03-29",
              "frame": "CY2019Q1I"
            },
            {
              "end": "2019-05-31",
              "val": 558500000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24"
            },
            {
              "end": "2019-05-31",
              "val": 558500000,
              "accn": "0000723531-19-000046",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-10-04"
            },
            {
              "end": "2019-05-31",
              "val": 558500000,
              "accn": "0000723531-19-000057",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-12-20"
            },
            {
              "end": "2019-05-31",
              "val": 558500000,
              "accn": "0000723531-20-000017",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-03-27"
            },
            {
              "end": "2019-05-31",
              "val": 558500000,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-07-17",
              "frame": "CY2019Q2I"
            },
            {
              "end": "2019-08-31",
              "val": 116700000,
              "accn": "0000723531-19-000046",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-10-04",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-11-30",
              "val": 92100000,
              "accn": "0000723531-19-000057",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-12-20",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-02-29",
              "val": 1400000,
              "accn": "0000723531-20-000017",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-03-27",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2021-08-31",
              "val": 5200000,
              "accn": "0000723531-21-000050",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-10-01",
              "frame": "CY2021Q3I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost": {
        "label": "Available-for-sale Securities, Debt Maturities, Amortized Cost Basis (Deprecated 2014-01-31)",
        "description": "Amount of available-for-sale debt securities at cost, net of adjustments, which include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings (less any cumulative-effect adjustments, as defined) and fair value hedge accounting adjustments.",
        "units": {
          "USD": [
            {
              "end": "2010-08-31",
              "val": 2484600000,
              "accn": "0000950123-10-089222",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-09-27",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-11-30",
              "val": 2550300000,
              "accn": "0000950123-10-115032",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-12-20",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-02-28",
              "val": 2533400000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-05-31",
              "val": 2677900000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-08-31",
              "val": 2225200000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-11-30",
              "val": 2697400000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-02-29",
              "val": 3551000000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-05-31",
              "val": 2999500000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-08-31",
              "val": 3349100000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 2945000000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 4821800000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 3656700000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-08-31",
              "val": 3316700000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-11-30",
              "val": 2809000000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-02-28",
              "val": 3050300000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-05-31",
              "val": 3356900000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesFairValue": {
        "label": "Available-for-sale Securities, Debt Maturities, Fair Value (Deprecated 2011-01-31)",
        "description": "This item represents the total of all debt securities grouped by maturity dates, at fair value, which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2010-08-31",
              "val": 2569700000,
              "accn": "0000950123-10-089222",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-09-27",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-11-30",
              "val": 2611700000,
              "accn": "0000950123-10-115032",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-12-20",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-02-28",
              "val": 2579800000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-05-31",
              "val": 2737200000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2011Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis": {
        "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost",
        "description": "Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.",
        "units": {
          "USD": [
            {
              "end": "2012-08-31",
              "val": 301800000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 299200000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 281300000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 274300000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-08-31",
              "val": 339600000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-11-30",
              "val": 337400000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-02-28",
              "val": 350100000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-05-31",
              "val": 392000000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-08-31",
              "val": 340600000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-11-30",
              "val": 393900000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-28",
              "val": 367000000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-05-31",
              "val": 345800000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-08-31",
              "val": 369700000,
              "accn": "0000723531-15-000015",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-09-30",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-11-30",
              "val": 348000000,
              "accn": "0000723531-15-000030",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-12-23",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-02-29",
              "val": 368500000,
              "accn": "0000723531-16-000034",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-03-30",
              "frame": "CY2016Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue": {
        "label": "Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value",
        "description": "Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.",
        "units": {
          "USD": [
            {
              "end": "2012-08-31",
              "val": 306300000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 302800000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 283900000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 276200000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-08-31",
              "val": 343000000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-11-30",
              "val": 340200000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-02-28",
              "val": 352600000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-05-31",
              "val": 394300000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-08-31",
              "val": 343300000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-11-30",
              "val": 396600000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-28",
              "val": 369200000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-05-31",
              "val": 347800000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-08-31",
              "val": 372500000,
              "accn": "0000723531-15-000015",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-09-30",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-11-30",
              "val": 350500000,
              "accn": "0000723531-15-000030",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-12-23",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-02-29",
              "val": 370700000,
              "accn": "0000723531-16-000034",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-03-30",
              "frame": "CY2016Q1I"
            }
          ]
        }
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        }
      },
      "AvailableForSaleSecuritiesGrossUnrealizedLoss": {
        "label": "Available-for-sale Securities, Gross Unrealized Loss",
        "description": "Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.",
        "units": {
          "USD": [
            {
              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 400000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2009"
            },
            {
              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 400000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23"
            },
            {
              "start": "2010-06-01",
              "end": "2010-11-30",
              "val": 800000,
              "accn": "0000950123-10-115032",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-12-20"
            },
            {
              "start": "2010-06-01",
              "end": "2011-02-28",
              "val": 2800000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23"
            },
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 100000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesGrossUnrealizedLosses1": {
        "label": "Available-for-sale Securities, Gross Unrealized Losses (Deprecated 2013-01-31)",
        "description": "This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.",
        "units": {
          "USD": [
            {
              "end": "2011-05-31",
              "val": 100000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-05-31",
              "val": 100000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "end": "2011-05-31",
              "val": 100000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "end": "2011-05-31",
              "val": 100000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27"
            },
            {
              "end": "2011-08-31",
              "val": 0,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-11-30",
              "val": 300000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-02-29",
              "val": 100000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-05-31",
              "val": 300000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24"
            },
            {
              "end": "2012-05-31",
              "val": 300000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20"
            },
            {
              "end": "2012-05-31",
              "val": 300000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-05-31",
              "val": 300000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27"
            },
            {
              "end": "2012-05-31",
              "val": 300000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20"
            },
            {
              "end": "2012-08-31",
              "val": 400000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 100000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 600000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 5700000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions": {
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions (Deprecated 2013-01-31)",
        "description": "Disclosure regarding factors used to determine that the impairment of securities not categorized as either held-to-maturity securities or trading securities (hence equal to available for sale securities) where cost exceeds fair value is not an other than temporary impairment (OTTI). This item contains disclosure of the number of investment positions in the available-for-sale investments determined to be temporarily impaired.",
        "units": {
          "Security": [
            {
              "end": "2012-05-31",
              "val": 35,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24"
            },
            {
              "end": "2012-05-31",
              "val": 35,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-05-31",
              "val": 35,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27"
            },
            {
              "end": "2012-05-31",
              "val": 35,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20"
            },
            {
              "end": "2012-08-31",
              "val": 34,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 20,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 43,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 147,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear": {
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year",
        "description": "Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.",
        "units": {
          "security": [
            {
              "end": "2020-02-29",
              "val": 0,
              "accn": "0000723531-20-000017",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-03-27",
              "frame": "CY2020Q1I"
            }
          ]
        }
      },
      "AvailableForSaleSecuritiesNoncurrent": {
        "label": "Available-for-sale Securities, Noncurrent",
        "description": "Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.",
        "units": {
          "USD": [
            {
              "end": "2011-05-31",
              "val": 207300000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27"
            },
            {
              "end": "2011-05-31",
              "val": 207300000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "end": "2011-05-31",
              "val": 207300000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "end": "2011-05-31",
              "val": 207300000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-08-31",
              "val": 232900000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-11-30",
              "val": 265200000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-02-29",
              "val": 295400000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-05-31",
              "val": 473700000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20"
            },
            {
              "end": "2012-05-31",
              "val": 473700000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24"
            },
            {
              "end": "2012-05-31",
              "val": 473700000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20"
            },
            {
              "end": "2012-05-31",
              "val": 473700000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27"
            },
            {
              "end": "2012-05-31",
              "val": 473700000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-08-31",
              "val": 480400000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 504300000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 227000000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 369100000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22"
            },
            {
              "end": "2013-05-31",
              "val": 369100000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30"
            },
            {
              "end": "2013-05-31",
              "val": 369100000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20"
            },
            {
              "end": "2013-05-31",
              "val": 369100000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26"
            },
            {
              "end": "2013-05-31",
              "val": 369100000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-08-31",
              "val": 365600000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-11-30",
              "val": 375900000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-02-28",
              "val": 377800000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-05-31",
              "val": 385600000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22"
            },
            {
              "end": "2014-05-31",
              "val": 385600000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24"
            },
            {
              "end": "2014-05-31",
              "val": 385600000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19"
            },
            {
              "end": "2014-05-31",
              "val": 385600000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25"
            },
            {
              "end": "2014-05-31",
              "val": 385600000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-08-31",
              "val": 396500000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-11-30",
              "val": 398500000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-28",
              "val": 408600000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-05-31",
              "val": 399800000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21"
            },
            {
              "end": "2015-05-31",
              "val": 399800000,
              "accn": "0000723531-15-000015",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-09-30"
            },
            {
              "end": "2015-05-31",
              "val": 399800000,
              "accn": "0000723531-15-000030",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-12-23"
            },
            {
              "end": "2015-05-31",
              "val": 399800000,
              "accn": "0000723531-16-000034",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-03-30"
            },
            {
              "end": "2015-05-31",
              "val": 399800000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-08-31",
              "val": 416200000,
              "accn": "0000723531-15-000015",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-09-30",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-11-30",
              "val": 436500000,
              "accn": "0000723531-15-000030",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-12-23",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-02-29",
              "val": 428600000,
              "accn": "0000723531-16-000034",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-03-30",
              "frame": "CY2016Q1I"
            },
            {
              "end": "2016-05-31",
              "val": 441100000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22"
            },
            {
              "end": "2016-05-31",
              "val": 441100000,
              "accn": "0000723531-16-000053",
              "fy": 2017,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2016-09-30"
            },
            {
              "end": "2016-05-31",
              "val": 441100000,
              "accn": "0000723531-16-000061",
              "fy": 2017,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2016-12-23"
            },
            {
              "end": "2016-05-31",
              "val": 441100000,
              "accn": "0000723531-17-000010",
              "fy": 2017,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2017-03-31"
            },
            {
              "end": "2016-05-31",
              "val": 441100000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2016-08-31",
              "val": 446300000,
              "accn": "0000723531-16-000053",
              "fy": 2017,
              "fp": "Q1",
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            {
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            {
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            {
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        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (Deprecated 2013-01-31)",
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      "AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2": {
        "label": "Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (Deprecated 2013-01-31)",
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        "units": {
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              "frame": "CY2011"
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              "val": 200000,
              "accn": "0000723531-13-000033",
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            {
              "start": "2012-06-01",
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              "val": 300000,
              "accn": "0000723531-12-000011",
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            },
            {
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              "end": "2012-11-30",
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            {
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              "val": 900000,
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              "fy": 2013,
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            {
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              "fp": "Q3",
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            },
            {
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              "end": "2013-05-31",
              "val": 900000,
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              "fy": 2013,
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            },
            {
              "start": "2012-06-01",
              "end": "2013-05-31",
              "val": 900000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22"
            },
            {
              "start": "2012-06-01",
              "end": "2013-05-31",
              "val": 900000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2012"
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            {
              "start": "2013-06-01",
              "end": "2013-08-31",
              "val": 200000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30"
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            {
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              "end": "2013-08-31",
              "val": 200000,
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              "fy": 2015,
              "fp": "Q1",
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            },
            {
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              "fy": 2015,
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              "filed": "2014-12-19"
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            {
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              "end": "2014-02-28",
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            },
            {
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            },
            {
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            },
            {
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            },
            {
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            {
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            },
            {
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            {
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            {
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            {
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            },
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            },
            {
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              "filed": "2017-07-21",
              "frame": "CY2014"
            },
            {
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              "accn": "0000723531-15-000015",
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              "filed": "2015-09-30",
              "frame": "CY2015Q3"
            },
            {
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              "val": 0,
              "accn": "0000723531-15-000030",
              "fy": 2016,
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              "filed": "2015-12-23"
            },
            {
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            },
            {
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            {
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            },
            {
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            {
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            },
            {
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            {
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            {
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            {
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            {
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            {
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              "val": 100000,
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            },
            {
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            {
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            {
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            },
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            {
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            },
            {
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            },
            {
              "start": "2018-06-01",
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              "val": -200000,
              "accn": "0000723531-19-000057",
              "fy": 2020,
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            {
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              "val": -100000,
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            },
            {
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              "end": "2019-02-28",
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              "accn": "0000723531-20-000017",
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            {
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            {
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            },
            {
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            {
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            {
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            {
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            },
            {
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              "end": "2020-05-31",
              "val": 11300000,
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              "form": "10-K",
              "filed": "2020-07-17"
            },
            {
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              "val": 11300000,
              "accn": "0000723531-21-000035",
              "fy": 2021,
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              "filed": "2021-07-16",
              "frame": "CY2019"
            },
            {
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            },
            {
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            },
            {
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            {
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            {
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              "val": 1200000,
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              "filed": "2021-07-16",
              "frame": "CY2020"
            },
            {
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              "val": 100000,
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        }
      },
      "AvailableforsaleSecuritiesGrossUnrealizedGain": {
        "label": "Available-for-sale Securities, Gross Unrealized Gains (Deprecated 2013-01-31)",
        "description": "This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.",
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            {
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            {
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            {
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              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
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      "AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1": {
        "label": "Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions",
        "description": "Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.",
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            {
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              "end": "2024-05-31",
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            {
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              "val": 136200000,
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            {
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              "accn": "0000950123-11-087071",
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              "frame": "CY2008"
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            {
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              "end": "2010-05-31",
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            },
            {
              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 7900000,
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            {
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            {
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            {
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            {
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            {
              "start": "2015-06-01",
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            {
              "start": "2016-06-01",
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              "fp": "FY",
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              "filed": "2017-07-21"
            },
            {
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              "end": "2017-05-31",
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              "accn": "0000723531-18-000026",
              "fy": 2018,
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            },
            {
              "start": "2016-06-01",
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              "val": 13400000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
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            },
            {
              "start": "2017-06-01",
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              "fy": 2018,
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            {
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            {
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              "fy": 2020,
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            {
              "start": "2018-06-01",
              "end": "2019-05-31",
              "val": 8900000,
              "accn": "0000723531-21-000035",
              "fy": 2021,
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            {
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              "end": "2020-05-31",
              "val": 9000000,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
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              "filed": "2020-07-17"
            },
            {
              "start": "2019-06-01",
              "end": "2020-05-31",
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              "fy": 2021,
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              "form": "10-K",
              "filed": "2021-07-16"
            },
            {
              "start": "2019-06-01",
              "end": "2020-05-31",
              "val": 9000000,
              "accn": "0000950170-22-012734",
              "fy": 2022,
              "fp": "FY",
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              "filed": "2022-07-15",
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            },
            {
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              "val": 8600000,
              "accn": "0000723531-21-000035",
              "fy": 2021,
              "fp": "FY",
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            },
            {
              "start": "2020-06-01",
              "end": "2021-05-31",
              "val": 8600000,
              "accn": "0000950170-22-012734",
              "fy": 2022,
              "fp": "FY",
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            {
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              "end": "2021-05-31",
              "val": 8600000,
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              "fp": "FY",
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              "frame": "CY2020"
            },
            {
              "start": "2021-06-01",
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              "val": 9800000,
              "accn": "0000950170-22-012734",
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            },
            {
              "start": "2021-06-01",
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              "val": 9800000,
              "accn": "0000950170-23-032988",
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            },
            {
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              "end": "2022-05-31",
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              "fy": 2024,
              "fp": "FY",
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              "frame": "CY2021"
            },
            {
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              "accn": "0000950170-23-032988",
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            {
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              "fp": "FY",
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            },
            {
              "start": "2022-06-01",
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              "val": 12100000,
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              "fy": 2025,
              "fp": "FY",
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            },
            {
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              "fy": 2024,
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            {
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              "filed": "2025-07-11"
            },
            {
              "start": "2023-06-01",
              "end": "2024-05-31",
              "val": 12700000,
              "accn": "0001193125-26-307785",
              "fy": 2026,
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            {
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              "val": 17700000,
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              "fy": 2025,
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            {
              "start": "2024-06-01",
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              "val": 17700000,
              "accn": "0001193125-26-307785",
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              "fp": "FY",
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            },
            {
              "start": "2025-06-01",
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              "val": 17500000,
              "accn": "0001193125-26-307785",
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        }
      },
      "EmployeeServiceShareBasedCompensationUnrecognizedCompensationCostsOnNonvestedAwardsWeightedAveragePeriodOfRecognition": {
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            {
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            {
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      },
      "FairValueMeasuredOnRecurringBasisInvestments": {
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            {
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            {
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              "end": "2025-05-31",
              "val": 4813300000,
              "accn": "0000950170-25-095300",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-07-11"
            },
            {
              "end": "2025-05-31",
              "val": 4813300000,
              "accn": "0001193125-25-224997",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-09-30"
            },
            {
              "end": "2025-05-31",
              "val": 4813300000,
              "accn": "0001193125-25-328698",
              "fy": 2026,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-12-22"
            },
            {
              "end": "2025-05-31",
              "val": 4813300000,
              "accn": "0001193125-26-126204",
              "fy": 2026,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2026-03-26"
            },
            {
              "end": "2025-05-31",
              "val": 4813300000,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2025-08-31",
              "val": 4927400000,
              "accn": "0001193125-25-224997",
              "fy": 2026,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2025-09-30",
              "frame": "CY2025Q3I"
            },
            {
              "end": "2025-11-30",
              "val": 4875700000,
              "accn": "0001193125-25-328698",
              "fy": 2026,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2025-12-22",
              "frame": "CY2025Q4I"
            },
            {
              "end": "2026-02-28",
              "val": 5610900000,
              "accn": "0001193125-26-126204",
              "fy": 2026,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2026-03-26",
              "frame": "CY2026Q1I"
            },
            {
              "end": "2026-05-31",
              "val": 4832200000,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2026Q2I"
            }
          ]
        }
      },
      "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": "2010-06-01",
              "end": "2011-05-31",
              "val": 6200000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010"
            },
            {
              "start": "2011-06-01",
              "end": "2011-08-31",
              "val": 6200000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-06-01",
              "end": "2011-11-30",
              "val": 6200000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "start": "2011-06-01",
              "end": "2012-02-29",
              "val": 6400000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 4400000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearFour": {
        "label": "Future Amortization Expense, Year Four (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year four of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 9000000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010"
            },
            {
              "start": "2011-06-01",
              "end": "2011-08-31",
              "val": 9000000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-06-01",
              "end": "2011-11-30",
              "val": 9000000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "start": "2011-06-01",
              "end": "2012-02-29",
              "val": 9200000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 6400000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearOne": {
        "label": "Future Amortization Expense, Year One (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year one of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 22900000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010"
            },
            {
              "start": "2011-06-01",
              "end": "2011-08-31",
              "val": 22900000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-06-01",
              "end": "2011-11-30",
              "val": 22800000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "start": "2011-06-01",
              "end": "2012-02-29",
              "val": 22900000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 18100000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearThree": {
        "label": "Future Amortization Expense, Year Three (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 12700000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010"
            },
            {
              "start": "2011-06-01",
              "end": "2011-08-31",
              "val": 12700000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-06-01",
              "end": "2011-11-30",
              "val": 12700000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "start": "2011-06-01",
              "end": "2012-02-29",
              "val": 13000000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 9200000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011"
            }
          ]
        }
      },
      "FutureAmortizationExpenseYearTwo": {
        "label": "Future Amortization Expense, Year Two (Deprecated 2012-01-31)",
        "description": "The amount of amortization expense expected to be recognized during year two of the five succeeding fiscal years.",
        "units": {
          "USD": [
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 17700000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010"
            },
            {
              "start": "2011-06-01",
              "end": "2011-08-31",
              "val": 17700000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3"
            },
            {
              "start": "2011-06-01",
              "end": "2011-11-30",
              "val": 17700000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "start": "2011-06-01",
              "end": "2012-02-29",
              "val": 18000000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 13000000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011"
            }
          ]
        }
      },
      "GainLossOnDispositionOfAssets": {
        "label": "Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property",
        "description": "Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.",
        "units": {
          "USD": [
            {
              "start": "2020-06-01",
              "end": "2020-08-31",
              "val": 5100000,
              "accn": "0000723531-21-000035",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-07-16",
              "frame": "CY2020Q3"
            },
            {
              "start": "2021-06-01",
              "end": "2022-05-31",
              "val": -400000,
              "accn": "0000950170-24-082958",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-07-11",
              "frame": "CY2021"
            },
            {
              "start": "2022-06-01",
              "end": "2023-05-31",
              "val": -1300000,
              "accn": "0000950170-24-082958",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-07-11"
            },
            {
              "start": "2022-06-01",
              "end": "2023-05-31",
              "val": -1300000,
              "accn": "0000950170-25-095300",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-07-11",
              "frame": "CY2022"
            },
            {
              "start": "2023-06-01",
              "end": "2024-05-31",
              "val": -32800000,
              "accn": "0000950170-24-082958",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-07-11"
            },
            {
              "start": "2023-06-01",
              "end": "2024-05-31",
              "val": -32800000,
              "accn": "0000950170-25-095300",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-07-11"
            },
            {
              "start": "2023-06-01",
              "end": "2024-05-31",
              "val": -32800000,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2023"
            },
            {
              "start": "2024-06-01",
              "end": "2025-05-31",
              "val": -3700000,
              "accn": "0000950170-25-095300",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-07-11"
            },
            {
              "start": "2024-06-01",
              "end": "2025-05-31",
              "val": -3700000,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2024"
            },
            {
              "start": "2025-06-01",
              "end": "2026-05-31",
              "val": -6200000,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2025"
            }
          ]
        }
      },
      "GainLossOnDispositionOfAssets1": {
        "label": "Gain (Loss) on Disposition of Assets",
        "description": "Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.",
        "units": {
          "USD": [
            {
              "start": "2020-06-01",
              "end": "2020-08-31",
              "val": 5100000,
              "accn": "0000723531-20-000059",
              "fy": 2021,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2020-10-09"
            },
            {
              "start": "2020-06-01",
              "end": "2020-08-31",
              "val": 5100000,
              "accn": "0000723531-21-000050",
              "fy": 2022,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2021-10-01"
            },
            {
              "start": "2020-06-01",
              "end": "2020-08-31",
              "val": 5100000,
              "accn": "0000723531-21-000064",
              "fy": 2022,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2021-12-22"
            },
            {
              "start": "2020-06-01",
              "end": "2020-08-31",
              "val": 5100000,
              "accn": "0000950170-22-005198",
              "fy": 2022,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2022-03-31",
              "frame": "CY2020Q3"
            }
          ]
        }
      },
      "GainLossOnSaleOfInvestments": {
        "label": "Gain (Loss) on Sale of Investments",
        "description": "The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.",
        "units": {
          "USD": [
            {
              "start": "2007-06-01",
              "end": "2008-05-31",
              "val": 6450000,
              "accn": "0000950123-10-066009",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-07-16",
              "frame": "CY2007"
            },
            {
              "start": "2008-06-01",
              "end": "2008-08-31",
              "val": -300000,
              "accn": "0000950123-09-045262",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2009-09-23",
              "frame": "CY2008Q3"
            },
            {
              "start": "2008-06-01",
              "end": "2008-11-30",
              "val": -705000,
              "accn": "0000950123-09-071276",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2009-12-16"
            },
            {
              "start": "2008-06-01",
              "end": "2009-02-28",
              "val": -878000,
              "accn": "0000950123-10-027758",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-03-24"
            },
            {
              "start": "2008-06-01",
              "end": "2009-05-31",
              "val": 1100000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2008"
            },
            {
              "start": "2008-06-01",
              "end": "2009-05-31",
              "val": 1135000,
              "accn": "0000950123-10-066009",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-07-16"
            },
            {
              "start": "2009-06-01",
              "end": "2009-08-31",
              "val": 300000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2009Q3"
            },
            {
              "start": "2009-06-01",
              "end": "2009-08-31",
              "val": 300000,
              "accn": "0000950123-10-089222",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-09-27"
            },
            {
              "start": "2009-06-01",
              "end": "2009-08-31",
              "val": -285000,
              "accn": "0000950123-09-045262",
              "fy": 2010,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2009-09-23"
            },
            {
              "start": "2009-06-01",
              "end": "2009-11-30",
              "val": 1000000,
              "accn": "0000950123-10-115032",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-12-20"
            },
            {
              "start": "2009-06-01",
              "end": "2009-11-30",
              "val": -1014000,
              "accn": "0000950123-09-071276",
              "fy": 2010,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2009-12-16"
            },
            {
              "start": "2009-09-01",
              "end": "2009-11-30",
              "val": 700000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2009Q4"
            },
            {
              "start": "2009-06-01",
              "end": "2010-02-28",
              "val": 2300000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23"
            },
            {
              "start": "2009-06-01",
              "end": "2010-02-28",
              "val": -2289000,
              "accn": "0000950123-10-027758",
              "fy": 2010,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2010-03-24"
            },
            {
              "start": "2009-12-01",
              "end": "2010-02-28",
              "val": 1300000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010Q1"
            },
            {
              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 3200000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2009"
            },
            {
              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 3200000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15"
            },
            {
              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 3232000,
              "accn": "0000950123-10-066009",
              "fy": 2010,
              "fp": "FY",
              "form": "10-K",
              "filed": "2010-07-16"
            },
            {
              "start": "2010-03-01",
              "end": "2010-05-31",
              "val": 900000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010Q2"
            },
            {
              "start": "2010-06-01",
              "end": "2010-08-31",
              "val": 100000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2010Q3"
            },
            {
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            },
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            },
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        "description": "Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale.",
        "units": {
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              "end": "2012-05-31",
              "val": 7000000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24"
            },
            {
              "end": "2012-05-31",
              "val": 7000000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20"
            },
            {
              "end": "2012-05-31",
              "val": 7000000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27"
            },
            {
              "end": "2012-05-31",
              "val": 7000000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-08-31",
              "val": 7300000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
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              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 8100000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 8100000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22"
            },
            {
              "end": "2013-05-31",
              "val": 8100000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30"
            },
            {
              "end": "2013-05-31",
              "val": 8100000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20"
            },
            {
              "end": "2013-05-31",
              "val": 8100000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26"
            },
            {
              "end": "2013-05-31",
              "val": 8100000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-08-31",
              "val": 8100000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-11-30",
              "val": 8100000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-02-28",
              "val": 8100000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-05-31",
              "val": 8100000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22"
            },
            {
              "end": "2014-05-31",
              "val": 8100000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24"
            },
            {
              "end": "2014-05-31",
              "val": 8100000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19"
            },
            {
              "end": "2014-05-31",
              "val": 8100000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25"
            },
            {
              "end": "2014-05-31",
              "val": 8100000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-08-31",
              "val": 8100000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-11-30",
              "val": 8300000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19",
              "frame": "CY2014Q4I"
            },
            {
              "end": "2015-02-28",
              "val": 8300000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25",
              "frame": "CY2015Q1I"
            },
            {
              "end": "2015-05-31",
              "val": 8300000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21"
            },
            {
              "end": "2015-05-31",
              "val": 8300000,
              "accn": "0000723531-15-000015",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-09-30"
            },
            {
              "end": "2015-05-31",
              "val": 8300000,
              "accn": "0000723531-15-000030",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-12-23"
            },
            {
              "end": "2015-05-31",
              "val": 8300000,
              "accn": "0000723531-16-000034",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-03-30",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2015-08-31",
              "val": 8300000,
              "accn": "0000723531-15-000015",
              "fy": 2016,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2015-09-30",
              "frame": "CY2015Q3I"
            },
            {
              "end": "2015-11-30",
              "val": 8300000,
              "accn": "0000723531-15-000030",
              "fy": 2016,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2015-12-23",
              "frame": "CY2015Q4I"
            },
            {
              "end": "2016-02-29",
              "val": 8300000,
              "accn": "0000723531-16-000034",
              "fy": 2016,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2016-03-30",
              "frame": "CY2016Q1I"
            }
          ]
        }
      },
      "LeaseAndRentalExpense": {
        "label": "Operating Leases, Rent Expense",
        "description": "Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.",
        "units": {
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              "start": "2009-06-01",
              "end": "2010-05-31",
              "val": 46900000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2009"
            },
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 45400000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20"
            },
            {
              "start": "2010-06-01",
              "end": "2011-05-31",
              "val": 45400000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2010"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 43000000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 43000000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22"
            },
            {
              "start": "2011-06-01",
              "end": "2012-05-31",
              "val": 43000000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2011"
            },
            {
              "start": "2012-06-01",
              "end": "2013-05-31",
              "val": 39900000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22"
            },
            {
              "start": "2012-06-01",
              "end": "2013-05-31",
              "val": 39900000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22"
            },
            {
              "start": "2012-06-01",
              "end": "2013-05-31",
              "val": 39900000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2012"
            },
            {
              "start": "2013-06-01",
              "end": "2014-05-31",
              "val": 39100000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22"
            },
            {
              "start": "2013-06-01",
              "end": "2014-05-31",
              "val": 39100000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2013"
            },
            {
              "start": "2014-06-01",
              "end": "2015-05-31",
              "val": 39400000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2014"
            }
          ]
        }
      },
      "LeaseholdImprovementsGross": {
        "label": "Leasehold Improvements, Gross",
        "description": "Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.",
        "units": {
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            {
              "end": "2010-05-31",
              "val": 91400000,
              "accn": "0000950123-10-089222",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-09-27"
            },
            {
              "end": "2010-05-31",
              "val": 91400000,
              "accn": "0000950123-10-115032",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-12-20"
            },
            {
              "end": "2010-05-31",
              "val": 91400000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23"
            },
            {
              "end": "2010-05-31",
              "val": 91400000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2010Q2I"
            },
            {
              "end": "2010-08-31",
              "val": 91800000,
              "accn": "0000950123-10-089222",
              "fy": 2011,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2010-09-27",
              "frame": "CY2010Q3I"
            },
            {
              "end": "2010-11-30",
              "val": 92900000,
              "accn": "0000950123-10-115032",
              "fy": 2011,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2010-12-20",
              "frame": "CY2010Q4I"
            },
            {
              "end": "2011-02-28",
              "val": 93000000,
              "accn": "0000950123-11-028301",
              "fy": 2011,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2011-03-23",
              "frame": "CY2011Q1I"
            },
            {
              "end": "2011-05-31",
              "val": 93300000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15"
            },
            {
              "end": "2011-05-31",
              "val": 93300000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27"
            },
            {
              "end": "2011-05-31",
              "val": 93300000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20"
            },
            {
              "end": "2011-05-31",
              "val": 93300000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28"
            },
            {
              "end": "2011-05-31",
              "val": 93300000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2011-08-31",
              "val": 94600000,
              "accn": "0000950123-11-087071",
              "fy": 2012,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2011-09-27",
              "frame": "CY2011Q3I"
            },
            {
              "end": "2011-11-30",
              "val": 96400000,
              "accn": "0001193125-11-347321",
              "fy": 2012,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2011-12-20",
              "frame": "CY2011Q4I"
            },
            {
              "end": "2012-02-29",
              "val": 97900000,
              "accn": "0001193125-12-137499",
              "fy": 2012,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2012-03-28",
              "frame": "CY2012Q1I"
            },
            {
              "end": "2012-05-31",
              "val": 96000000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20"
            },
            {
              "end": "2012-05-31",
              "val": 96000000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24"
            },
            {
              "end": "2012-05-31",
              "val": 96000000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20"
            },
            {
              "end": "2012-05-31",
              "val": 96000000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27"
            },
            {
              "end": "2012-05-31",
              "val": 96000000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2012-08-31",
              "val": 96600000,
              "accn": "0001193125-12-401628",
              "fy": 2013,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2012-09-24",
              "frame": "CY2012Q3I"
            },
            {
              "end": "2012-11-30",
              "val": 96100000,
              "accn": "0000723531-12-000011",
              "fy": 2013,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2012-12-20",
              "frame": "CY2012Q4I"
            },
            {
              "end": "2013-02-28",
              "val": 98500000,
              "accn": "0000723531-13-000006",
              "fy": 2013,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2013-03-27",
              "frame": "CY2013Q1I"
            },
            {
              "end": "2013-05-31",
              "val": 99500000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22"
            },
            {
              "end": "2013-05-31",
              "val": 99500000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30"
            },
            {
              "end": "2013-05-31",
              "val": 99500000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20"
            },
            {
              "end": "2013-05-31",
              "val": 99500000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26"
            },
            {
              "end": "2013-05-31",
              "val": 99500000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2013-08-31",
              "val": 100600000,
              "accn": "0000723531-13-000033",
              "fy": 2014,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2013-09-30",
              "frame": "CY2013Q3I"
            },
            {
              "end": "2013-11-30",
              "val": 101300000,
              "accn": "0000723531-13-000043",
              "fy": 2014,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2013-12-20",
              "frame": "CY2013Q4I"
            },
            {
              "end": "2014-02-28",
              "val": 101000000,
              "accn": "0000723531-14-000005",
              "fy": 2014,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2014-03-26",
              "frame": "CY2014Q1I"
            },
            {
              "end": "2014-05-31",
              "val": 101700000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22"
            },
            {
              "end": "2014-05-31",
              "val": 101700000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24"
            },
            {
              "end": "2014-05-31",
              "val": 101700000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19"
            },
            {
              "end": "2014-05-31",
              "val": 101700000,
              "accn": "0000723531-15-000004",
              "fy": 2015,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2015-03-25"
            },
            {
              "end": "2014-05-31",
              "val": 101700000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2014-08-31",
              "val": 101600000,
              "accn": "0000723531-14-000023",
              "fy": 2015,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2014-09-24",
              "frame": "CY2014Q3I"
            },
            {
              "end": "2014-11-30",
              "val": 104000000,
              "accn": "0000723531-14-000031",
              "fy": 2015,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2014-12-19",
              "frame": "CY2014Q4I"
            },
            {
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              "accn": "0000950123-11-065947",
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              "end": "2016-05-31",
              "val": 7400000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-05-31",
              "val": 6100000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2018-05-31",
              "val": 6800000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2019-05-31",
              "val": 10500000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24",
              "frame": "CY2019Q2I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInFourYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Four Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-05-31",
              "val": 20200000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2012-05-31",
              "val": 20000000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2013-05-31",
              "val": 19500000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2014-05-31",
              "val": 17000000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2015-05-31",
              "val": 16100000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2016-05-31",
              "val": 12900000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-05-31",
              "val": 13200000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2018-05-31",
              "val": 12800000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2019-05-31",
              "val": 13800000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24"
            },
            {
              "end": "2019-05-31",
              "val": 10500000,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-07-17",
              "frame": "CY2019Q2I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInThreeYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Three Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-05-31",
              "val": 25000000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2012-05-31",
              "val": 27300000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2013-05-31",
              "val": 24900000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2014-05-31",
              "val": 23900000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2015-05-31",
              "val": 23100000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2016-05-31",
              "val": 20000000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-05-31",
              "val": 19300000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2018-05-31",
              "val": 19800000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2019-05-31",
              "val": 21300000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24"
            },
            {
              "end": "2019-05-31",
              "val": 13800000,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-07-17",
              "frame": "CY2019Q2I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueInTwoYears": {
        "label": "Operating Leases, Future Minimum Payments, Due in Two Years",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-05-31",
              "val": 31600000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2012-05-31",
              "val": 32300000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2013-05-31",
              "val": 33100000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2014-05-31",
              "val": 29000000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2015-05-31",
              "val": 31200000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2016-05-31",
              "val": 28500000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-05-31",
              "val": 27300000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2018-05-31",
              "val": 26800000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2019-05-31",
              "val": 29900000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24"
            },
            {
              "end": "2019-05-31",
              "val": 21300000,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-07-17",
              "frame": "CY2019Q2I"
            }
          ]
        }
      },
      "OperatingLeasesFutureMinimumPaymentsDueThereafter": {
        "label": "Operating Leases, Future Minimum Payments, Due Thereafter",
        "description": "Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.",
        "units": {
          "USD": [
            {
              "end": "2011-05-31",
              "val": 20500000,
              "accn": "0000950123-11-065947",
              "fy": 2011,
              "fp": "FY",
              "form": "10-K",
              "filed": "2011-07-15",
              "frame": "CY2011Q2I"
            },
            {
              "end": "2012-05-31",
              "val": 21400000,
              "accn": "0001193125-12-309041",
              "fy": 2012,
              "fp": "FY",
              "form": "10-K",
              "filed": "2012-07-20",
              "frame": "CY2012Q2I"
            },
            {
              "end": "2013-05-31",
              "val": 15600000,
              "accn": "0000723531-13-000021",
              "fy": 2013,
              "fp": "FY",
              "form": "10-K",
              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
            },
            {
              "end": "2014-05-31",
              "val": 11200000,
              "accn": "0000723531-14-000014",
              "fy": 2014,
              "fp": "FY",
              "form": "10-K",
              "filed": "2014-07-22",
              "frame": "CY2014Q2I"
            },
            {
              "end": "2015-05-31",
              "val": 8500000,
              "accn": "0000723531-15-000011",
              "fy": 2015,
              "fp": "FY",
              "form": "10-K",
              "filed": "2015-07-21",
              "frame": "CY2015Q2I"
            },
            {
              "end": "2016-05-31",
              "val": 2200000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2016Q2I"
            },
            {
              "end": "2017-05-31",
              "val": 4300000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2017Q2I"
            },
            {
              "end": "2018-05-31",
              "val": 8800000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2018Q2I"
            },
            {
              "end": "2019-05-31",
              "val": 10700000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24"
            },
            {
              "end": "2019-05-31",
              "val": 10700000,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-07-17",
              "frame": "CY2019Q2I"
            }
          ]
        }
      },
      "OperatingLeasesRentExpenseNet": {
        "label": "Operating Leases, Rent Expense, Net",
        "description": "Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.",
        "units": {
          "USD": [
            {
              "start": "2013-06-01",
              "end": "2014-05-31",
              "val": 39100000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22",
              "frame": "CY2013"
            },
            {
              "start": "2014-06-01",
              "end": "2015-05-31",
              "val": 39400000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21",
              "frame": "CY2014"
            },
            {
              "start": "2014-06-01",
              "end": "2015-05-31",
              "val": 39400000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22"
            },
            {
              "start": "2015-06-01",
              "end": "2016-05-31",
              "val": 39800000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
              "frame": "CY2015"
            },
            {
              "start": "2015-06-01",
              "end": "2016-05-31",
              "val": 39800000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21"
            },
            {
              "start": "2015-06-01",
              "end": "2016-05-31",
              "val": 39800000,
              "accn": "0000723531-16-000046",
              "fy": 2016,
              "fp": "FY",
              "form": "10-K",
              "filed": "2016-07-22"
            },
            {
              "start": "2016-06-01",
              "end": "2017-05-31",
              "val": 39700000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24",
              "frame": "CY2016"
            },
            {
              "start": "2016-06-01",
              "end": "2017-05-31",
              "val": 39700000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20"
            },
            {
              "start": "2016-06-01",
              "end": "2017-05-31",
              "val": 39700000,
              "accn": "0000723531-17-000023",
              "fy": 2017,
              "fp": "FY",
              "form": "10-K",
              "filed": "2017-07-21"
            },
            {
              "start": "2017-06-01",
              "end": "2018-05-31",
              "val": 39900000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24",
              "frame": "CY2017"
            },
            {
              "start": "2017-06-01",
              "end": "2018-05-31",
              "val": 39900000,
              "accn": "0000723531-18-000026",
              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20"
            },
            {
              "start": "2018-06-01",
              "end": "2019-05-31",
              "val": 42900000,
              "accn": "0000723531-19-000032",
              "fy": 2019,
              "fp": "FY",
              "form": "10-K",
              "filed": "2019-07-24",
              "frame": "CY2018"
            }
          ]
        }
      },
      "OperatingLeaseWeightedAverageDiscountRatePercent": {
        "label": "Operating Lease, Weighted Average Discount Rate, Percent",
        "description": "Weighted average discount rate for operating lease calculated at point in time.",
        "units": {
          "pure": [
            {
              "end": "2019-08-31",
              "val": 0.0287,
              "accn": "0000723531-19-000046",
              "fy": 2020,
              "fp": "Q1",
              "form": "10-Q",
              "filed": "2019-10-04",
              "frame": "CY2019Q3I"
            },
            {
              "end": "2019-11-30",
              "val": 0.0202,
              "accn": "0000723531-19-000057",
              "fy": 2020,
              "fp": "Q2",
              "form": "10-Q",
              "filed": "2019-12-20",
              "frame": "CY2019Q4I"
            },
            {
              "end": "2020-02-29",
              "val": 0.0206,
              "accn": "0000723531-20-000017",
              "fy": 2020,
              "fp": "Q3",
              "form": "10-Q",
              "filed": "2020-03-27",
              "frame": "CY2020Q1I"
            },
            {
              "end": "2020-05-31",
              "val": 0.0206,
              "accn": "0000723531-20-000048",
              "fy": 2020,
              "fp": "FY",
              "form": "10-K",
              "filed": "2020-07-17"
            },
            {
              "end": "2020-05-31",
              "val": 0.0206,
              "accn": "0000723531-21-000035",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-07-16",
              "frame": "CY2020Q2I"
            },
            {
              "end": "2021-05-31",
              "val": 0.0181,
              "accn": "0000723531-21-000035",
              "fy": 2021,
              "fp": "FY",
              "form": "10-K",
              "filed": "2021-07-16"
            },
            {
              "end": "2021-05-31",
              "val": 0.0181,
              "accn": "0000950170-22-012734",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-07-15",
              "frame": "CY2021Q2I"
            },
            {
              "end": "2022-05-31",
              "val": 0.0194,
              "accn": "0000950170-22-012734",
              "fy": 2022,
              "fp": "FY",
              "form": "10-K",
              "filed": "2022-07-15"
            },
            {
              "end": "2022-05-31",
              "val": 0.0194,
              "accn": "0000950170-23-032988",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-07-14",
              "frame": "CY2022Q2I"
            },
            {
              "end": "2023-05-31",
              "val": 0.0221,
              "accn": "0000950170-23-032988",
              "fy": 2023,
              "fp": "FY",
              "form": "10-K",
              "filed": "2023-07-14"
            },
            {
              "end": "2023-05-31",
              "val": 0.0221,
              "accn": "0000950170-24-082958",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-07-11",
              "frame": "CY2023Q2I"
            },
            {
              "end": "2024-05-31",
              "val": 0.0323,
              "accn": "0000950170-24-082958",
              "fy": 2024,
              "fp": "FY",
              "form": "10-K",
              "filed": "2024-07-11"
            },
            {
              "end": "2024-05-31",
              "val": 0.0323,
              "accn": "0000950170-25-095300",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-07-11",
              "frame": "CY2024Q2I"
            },
            {
              "end": "2025-05-31",
              "val": 0.0373,
              "accn": "0000950170-25-095300",
              "fy": 2025,
              "fp": "FY",
              "form": "10-K",
              "filed": "2025-07-11"
            },
            {
              "end": "2025-05-31",
              "val": 0.0373,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2025Q2I"
            },
            {
              "end": "2026-05-31",
              "val": 0.0413,
              "accn": "0001193125-26-307785",
              "fy": 2026,
              "fp": "FY",
              "form": "10-K",
              "filed": "2026-07-17",
              "frame": "CY2026Q2I"
            }
          ]
        }
      },
      "OtherAssetsCurrent": {
        "label": "Other Assets, Current",
        "description": "Amount of current assets classified as other.",
        "units": {
          "USD": [
            {
              "end": "2009-05-31",
              "val": 27913000,
              "accn": "0000950123-10-066009",
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        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized",
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              "filed": "2013-07-22",
              "frame": "CY2013Q2I"
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              "frame": "CY2017Q2I"
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            {
              "end": "2018-05-31",
              "val": 44100000,
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              "fy": 2018,
              "fp": "FY",
              "form": "10-K",
              "filed": "2018-07-20",
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              "form": "10-K",
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}