| | 2020-03-31 | 2022-03-31 | 2023-03-31 | 2024-03-31 | 2025-03-31 | 2025-06-30 | 2026-03-31 |
| Amortization Cash Flow | | | 753700000.0 | 689100000.0 | 584300000.0 | 570200000.0 | 534300000.0 |
| Amortization Of Intangibles | | | 753700000.0 | 689100000.0 | 584300000.0 | 570200000.0 | 534300000.0 |
| Amortization Of Securities | 0.0 | | | | | | |
| Asset Impairment Charge | | | 1800000.0 | 1800000.0 | 0.0 | 2200000.0 | 4100000.0 |
| Beginning Cash Position | | | 317400000.0 | 234000000.0 | 319700000.0 | 315100000.0 | 771700000.0 |
| Capital Expenditure | | | -486200000.0 | -285100000.0 | -126000000.0 | -71000000.0 | -91100000.0 |
| Capital Expenditure Reported | | | -486200000.0 | -285100000.0 | -126000000.0 | -71000000.0 | -91100000.0 |
| Cash Dividends Paid | | | -695300000.0 | -911500000.0 | -975700000.0 | -1003700000.0 | -1092500000.0 |
| Cash Flow From Continuing Financing Activities | | | -3104900000.0 | -2414900000.0 | -158300000.0 | -346000000.0 | -1298000000.0 |
| Cash Flow From Continuing Investing Activities | | | -599500000.0 | -392100000.0 | -287800000.0 | -199200000.0 | -195500000.0 |
| Cash Flow From Continuing Operating Activities | | | 3621000000.0 | 2892700000.0 | 898100000.0 | 796600000.0 | 962100000.0 |
| Change In Account Payable | | | 323400000.0 | -148400000.0 | -345600000.0 | -276800000.0 | 26000000.0 |
| Change In Income Tax Payable | -40500000.0 | | -28000000.0 | -38500000.0 | -1800000.0 | -34200000.0 | -147700000.0 |
| Change In Inventory | | | -483200000.0 | 12800000.0 | 31600000.0 | 147400000.0 | 264300000.0 |
| Change In Other Working Capital | | | 404500000.0 | -64200000.0 | -38100000.0 | -20800000.0 | -105800000.0 |
| Change In Payable | | | 295400000.0 | -186900000.0 | -347400000.0 | -311000000.0 | -121700000.0 |
| Change In Payables And Accrued Expense | | | 295400000.0 | -186900000.0 | -347400000.0 | -311000000.0 | -121700000.0 |
| Change In Receivables | | | -232700000.0 | 161600000.0 | 454000000.0 | 330300000.0 | -204500000.0 |
| Change In Tax Payable | -40500000.0 | | -28000000.0 | -38500000.0 | -1800000.0 | -34200000.0 | -147700000.0 |
| Change In Working Capital | | | -16000000.0 | -76700000.0 | 100100000.0 | 145900000.0 | -167700000.0 |
| Changes In Account Receivables | | | -232700000.0 | 161600000.0 | 454000000.0 | 330300000.0 | -204500000.0 |
| Changes In Cash | | | -83400000.0 | 85700000.0 | 452000000.0 | 251400000.0 | -531400000.0 |
| Common Stock Dividend Paid | | | | -911500000.0 | -975700000.0 | | -984000000.0 |
| Common Stock Issuance | | | 82300000.0 | 82100000.0 | 65400000.0 | 64700000.0 | 61700000.0 |
| Common Stock Payments | | | -945800000.0 | -982100000.0 | -96500000.0 | -23800000.0 | 0.0 |
| Deferred Income Tax | | | 205500000.0 | -27200000.0 | -143300000.0 | -138200000.0 | -64600000.0 |
| Deferred Tax | | | 205500000.0 | -27200000.0 | -143300000.0 | -138200000.0 | -64600000.0 |
| Depreciation | | | 244700000.0 | 190400000.0 | 165800000.0 | 162300000.0 | 155000000.0 |
| Depreciation Amortization Depletion | | | 998400000.0 | 879500000.0 | 750100000.0 | 732500000.0 | 689300000.0 |
| Depreciation And Amortization | | | 998400000.0 | 879500000.0 | 750100000.0 | 732500000.0 | 689300000.0 |
| End Cash Position | | | 234000000.0 | 319700000.0 | 771700000.0 | 566500000.0 | 240300000.0 |
| Financing Cash Flow | | | -3104900000.0 | -2414900000.0 | -158300000.0 | -346000000.0 | -1298000000.0 |
| Free Cash Flow | | | 3134800000.0 | 2607600000.0 | 772100000.0 | 725600000.0 | 871000000.0 |
| Gain Loss On Investment Securities | -2500000.0 | | | | | | |
| Income Tax Paid Supplemental Data | 101300000.0 | 141400000.0 | 482600000.0 | 517100000.0 | 175200000.0 | | |
| Interest Paid Supplemental Data | 355200000.0 | | 181500000.0 | 191200000.0 | 236200000.0 | | 211100000.0 |
| Investing Cash Flow | | | -599500000.0 | -392100000.0 | -287800000.0 | -199200000.0 | -195500000.0 |
| Issuance Of Capital Stock | | | 82300000.0 | 82100000.0 | 1514900000.0 | 1514200000.0 | 61700000.0 |
| Issuance Of Debt | | | 5935000000.0 | 17054800000.0 | 17247700000.0 | 12424300000.0 | 7316300000.0 |
| Long Term Debt Issuance | | | 5935000000.0 | 8015700000.0 | 3310200000.0 | 2060200000.0 | 900000000.0 |
| Long Term Debt Payments | | | -7405300000.0 | -9905400000.0 | -2491800000.0 | -2491800000.0 | -1201600000.0 |
| Net Business Purchase And Sale | 0.0 | | | | | | |
| Net Common Stock Issuance | | | -863500000.0 | -900000000.0 | -31100000.0 | 40900000.0 | 61700000.0 |
| Net Income From Continuing Operations | | | 2237700000.0 | 1906900000.0 | -500000.0 | -148400000.0 | 230000000.0 |
| Net Investment Purchase And Sale | | 0.0 | | | | | |
| Net Issuance Payments Of Debt | | | -1470300000.0 | -539300000.0 | -358000000.0 | -718000000.0 | -127900000.0 |
| Net Long Term Debt Issuance | | | -1470300000.0 | -1889700000.0 | 818400000.0 | -431600000.0 | -301600000.0 |
| Net Other Financing Charges | | | -75800000.0 | -64100000.0 | -82900000.0 | -59600000.0 | -71300000.0 |
| Net Other Investing Changes | | | -113300000.0 | -107000000.0 | -161800000.0 | -128200000.0 | -104400000.0 |
| Net Preferred Stock Issuance | | | 0.0 | 0.0 | 1449500000.0 | | 0.0 |
| Net Short Term Debt Issuance | 611900000.0 | | 0.0 | 1350400000.0 | -1176400000.0 | -286400000.0 | 173700000.0 |
| Operating Cash Flow | | | 3621000000.0 | 2892700000.0 | 898100000.0 | 796600000.0 | 962100000.0 |
| Operating Gains Losses | | 113400000.0 | 8300000.0 | 12200000.0 | 1700000.0 | | |
| Other Non Cash Items | | | 14900000.0 | 18700000.0 | 9600000.0 | 11600000.0 | 15600000.0 |
| Preferred Stock Dividend Paid | | | | 0.0 | 0.0 | | -108500000.0 |
| Preferred Stock Issuance | | | 0.0 | 0.0 | 1449500000.0 | | 0.0 |
| Proceeds From Stock Option Exercised | | | 0.0 | 0.0 | -160100000.0 | -55100000.0 | -68000000.0 |
| Purchase Of Business | 0.0 | | | | | | |
| Purchase Of Investment | | 0.0 | | | | | |
| Repayment Of Debt | | | -7405300000.0 | -17594100000.0 | -17605700000.0 | -13142300000.0 | -7444200000.0 |
| Repurchase Of Capital Stock | | | -945800000.0 | -982100000.0 | -96500000.0 | -23800000.0 | 0.0 |
| Sale Of Investment | 4700000.0 | 0.0 | | | | | |
| Short Term Debt Issuance | 611900000.0 | | 0.0 | 9039100000.0 | 13937500000.0 | 10364100000.0 | 6416300000.0 |
| Short Term Debt Payments | | | 0.0 | -7688700000.0 | -15113900000.0 | -10650500000.0 | -6242600000.0 |
| Stock Based Compensation | | | 170400000.0 | 177500000.0 | 180400000.0 | 189300000.0 | 255400000.0 |