| | 2021-09-30 | 2022-09-30 | 2023-09-30 | 2024-09-30 | 2025-09-30 |
| Amortization Cash Flow | | 282000000.0 | 341100000.0 | 338200000.0 | 406500000.0 |
| Amortization Of Intangibles | | 282000000.0 | 341100000.0 | 338200000.0 | 406500000.0 |
| Asset Impairment Charge | | 0.0 | 0.0 | 389200000.0 | 226600000.0 |
| Beginning Cash Position | | 4647200000.0 | 4782500000.0 | 4402400000.0 | 4408900000.0 |
| Capital Expenditure | | -90300000.0 | -148800000.0 | -177100000.0 | -154500000.0 |
| Cash Dividends Paid | | -583100000.0 | -607300000.0 | -656400000.0 | -683700000.0 |
| Cash Flow From Continuing Financing Activities | | 1585000000.0 | 2106700000.0 | 1415600000.0 | 452400000.0 |
| Cash Flow From Continuing Investing Activities | | -3329200000.0 | -3610300000.0 | -2423700000.0 | -2342700000.0 |
| Cash Flow From Continuing Operating Activities | | 1956700000.0 | 1089200000.0 | 971300000.0 | 1066100000.0 |
| Change In Account Payable | | 60000000.0 | -2700000.0 | -36500000.0 | 75000000.0 |
| Change In Accrued Expense | | 281700000.0 | 128900000.0 | 86500000.0 | -32900000.0 |
| Change In Income Tax Payable | | -180100000.0 | -1100000.0 | -93400000.0 | -181500000.0 |
| Change In Other Current Assets | | -3700000.0 | 2800000.0 | 9400000.0 | 19000000.0 |
| Change In Other Working Capital | 114800000.0 | 281700000.0 | 128900000.0 | | |
| Change In Payable | | -120100000.0 | -3800000.0 | -129900000.0 | -106500000.0 |
| Change In Payables And Accrued Expense | | 161600000.0 | 125100000.0 | -43400000.0 | -139400000.0 |
| Change In Receivables | | -86700000.0 | -63200000.0 | -111800000.0 | -128700000.0 |
| Change In Tax Payable | | -180100000.0 | -1100000.0 | -93400000.0 | -181500000.0 |
| Change In Working Capital | | 71200000.0 | 64700000.0 | -145800000.0 | -249100000.0 |
| Changes In Cash | | 212500000.0 | -414400000.0 | -36800000.0 | -824200000.0 |
| Common Stock Dividend Paid | | -583100000.0 | -607300000.0 | -656400000.0 | -683700000.0 |
| Common Stock Issuance | | 25100000.0 | 23300000.0 | 20800000.0 | 24100000.0 |
| Common Stock Payments | | -180800000.0 | -256300000.0 | -274400000.0 | -240300000.0 |
| Deferred Income Tax | | 98000000.0 | 41500000.0 | -124600000.0 | -47200000.0 |
| Deferred Tax | | 98000000.0 | 41500000.0 | -124600000.0 | -47200000.0 |
| Depreciation | | 95800000.0 | 104300000.0 | 116500000.0 | 125300000.0 |
| Depreciation Amortization Depletion | | 377800000.0 | 445400000.0 | 454700000.0 | 531800000.0 |
| Depreciation And Amortization | | 377800000.0 | 445400000.0 | 454700000.0 | 531800000.0 |
| Earnings Losses From Equity Investments | | -36200000.0 | -45400000.0 | -137500000.0 | -78000000.0 |
| Effect Of Exchange Rate Changes | | -77200000.0 | 34300000.0 | 43300000.0 | -10800000.0 |
| End Cash Position | | 4782500000.0 | 4402400000.0 | 4408900000.0 | 3573900000.0 |
| Financing Cash Flow | | 1585000000.0 | 2106700000.0 | 1415600000.0 | 452400000.0 |
| Free Cash Flow | | 1866400000.0 | 940400000.0 | 794200000.0 | 911600000.0 |
| Gain Loss On Investment Securities | | 170500000.0 | 80900000.0 | -32700000.0 | 33500000.0 |
| Income Tax Paid Supplemental Data | | 467500000.0 | 233200000.0 | 435700000.0 | 465400000.0 |
| Interest Paid Supplemental Data | | 281500000.0 | 501100000.0 | 807600000.0 | 859800000.0 |
| Investing Cash Flow | | -3329200000.0 | -3610300000.0 | -2423700000.0 | -2342700000.0 |
| Issuance Of Capital Stock | | 25100000.0 | 23300000.0 | 20800000.0 | 24100000.0 |
| Issuance Of Debt | | 5184400000.0 | 3539900000.0 | 4346700000.0 | 6329700000.0 |
| Long Term Debt Issuance | | 5184400000.0 | 3539900000.0 | 4346700000.0 | 6329700000.0 |
| Long Term Debt Payments | | -3045800000.0 | -1405000000.0 | -2162900000.0 | -5500600000.0 |
| Net Business Purchase And Sale | | -1354700000.0 | -500500000.0 | 175100000.0 | 0.0 |
| Net Common Stock Issuance | | -155700000.0 | -233000000.0 | -253600000.0 | -216200000.0 |
| Net Income From Continuing Operations | | 1333200000.0 | 1025700000.0 | 607900000.0 | 548900000.0 |
| Net Investment Purchase And Sale | | -1904100000.0 | -2729000000.0 | -1886800000.0 | -2097700000.0 |
| Net Issuance Payments Of Debt | | 2138600000.0 | 2134900000.0 | 2183800000.0 | 829100000.0 |
| Net Long Term Debt Issuance | | 2138600000.0 | 2134900000.0 | 2183800000.0 | 829100000.0 |
| Net Other Financing Charges | | 185200000.0 | 812100000.0 | 141800000.0 | 523200000.0 |
| Net Other Investing Changes | | 19900000.0 | -232000000.0 | -534900000.0 | -90500000.0 |
| Net PPEPurchase And Sale | | -90300000.0 | -148800000.0 | -177100000.0 | -154500000.0 |
| Operating Cash Flow | | 1956700000.0 | 1089200000.0 | 971300000.0 | 1066100000.0 |
| Operating Gains Losses | | 134300000.0 | 35500000.0 | -170200000.0 | -44500000.0 |
| Other Non Cash Items | | -266000000.0 | -706200000.0 | -286000000.0 | -115200000.0 |
| Purchase Of Business | -9000000.0 | -1354700000.0 | -500500000.0 | | 0.0 |
| Purchase Of Investment | | -4918100000.0 | -5171700000.0 | -7544300000.0 | -7792500000.0 |
| Purchase Of PPE | | -90300000.0 | -148800000.0 | -177100000.0 | -154500000.0 |
| Repayment Of Debt | | -3045800000.0 | -1405000000.0 | -2162900000.0 | -5500600000.0 |
| Repurchase Of Capital Stock | | -180800000.0 | -256300000.0 | -274400000.0 | -240300000.0 |
| Sale Of Business | | | | 175100000.0 | |
| Sale Of Investment | | 3014000000.0 | 2442700000.0 | 5657500000.0 | 5694800000.0 |
| Stock Based Compensation | | 208200000.0 | 182600000.0 | 246100000.0 | 214800000.0 |