| | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-03-31 |
| Amortization Cash Flow | | 237600000.0 | 227700000.0 | 226600000.0 | 221700000.0 | 221700000.0 |
| Amortization Of Intangibles | | 237600000.0 | 227700000.0 | 226600000.0 | 221700000.0 | 221700000.0 |
| Beginning Cash Position | | 88420300000.0 | 160789800000.0 | 137974300000.0 | 93109700000.0 | 95916000000.0 |
| Capital Expenditure | | -127200000.0 | -89700000.0 | -76400000.0 | -94000000.0 | -88400000.0 |
| Cash Dividends Paid | | -2189300000.0 | -2633500000.0 | -3235500000.0 | -3584200000.0 | -3823200000.0 |
| Cash Flow From Continuing Financing Activities | | 69908700000.0 | -25381700000.0 | -48339300000.0 | 5076500000.0 | 22351500000.0 |
| Cash Flow From Continuing Investing Activities | | 58400000.0 | -489800000.0 | 20900000.0 | -82600000.0 | -75800000.0 |
| Cash Flow From Continuing Operating Activities | | 2402400000.0 | 3056000000.0 | 3453800000.0 | 3690500000.0 | 3914400000.0 |
| Change In Account Payable | | -18600000.0 | 72500000.0 | -30800000.0 | -10700000.0 | -10900000.0 |
| Change In Income Tax Payable | | -120500000.0 | -147800000.0 | -77100000.0 | -117400000.0 | 12100000.0 |
| Change In Other Current Assets | | 5900000.0 | 10500000.0 | -545800000.0 | 740200000.0 | 292900000.0 |
| Change In Other Current Liabilities | | 17100000.0 | 20700000.0 | 610000000.0 | -761300000.0 | -214100000.0 |
| Change In Other Working Capital | 42800000.0 | | | | | |
| Change In Payable | | -139100000.0 | -75300000.0 | -107900000.0 | -128100000.0 | 1200000.0 |
| Change In Payables And Accrued Expense | | -139100000.0 | -75300000.0 | -107900000.0 | -128100000.0 | 1200000.0 |
| Change In Receivables | | -45700000.0 | -51100000.0 | -51500000.0 | -39400000.0 | -142800000.0 |
| Change In Tax Payable | | -120500000.0 | -147800000.0 | -77100000.0 | -117400000.0 | 12100000.0 |
| Change In Working Capital | | -161800000.0 | -95200000.0 | -95200000.0 | -188600000.0 | -62800000.0 |
| Changes In Account Receivables | | -45700000.0 | -51100000.0 | -51500000.0 | -39400000.0 | -142800000.0 |
| Changes In Cash | | 72369500000.0 | -22815500000.0 | -44864600000.0 | 8684400000.0 | 26190100000.0 |
| Common Stock Dividend Paid | -2110000000.0 | | | | | |
| Deferred Income Tax | | 34800000.0 | -23200000.0 | -75000000.0 | -66400000.0 | -66400000.0 |
| Deferred Tax | | 34800000.0 | -23200000.0 | -75000000.0 | -66400000.0 | -66400000.0 |
| Depreciation | | 147800000.0 | 134900000.0 | 126000000.0 | 115100000.0 | 112300000.0 |
| Depreciation Amortization Depletion | | 385400000.0 | 362600000.0 | 352600000.0 | 336800000.0 | 334000000.0 |
| Depreciation And Amortization | | 385400000.0 | 362600000.0 | 352600000.0 | 336800000.0 | 334000000.0 |
| Earnings Losses From Equity Investments | -7700000.0 | -24400000.0 | | | | |
| End Cash Position | | 160789800000.0 | 137974300000.0 | 93109700000.0 | 101794100000.0 | 122106100000.0 |
| Financing Cash Flow | | 69908700000.0 | -25381700000.0 | -48339300000.0 | 5076500000.0 | 22351500000.0 |
| Free Cash Flow | | 2275200000.0 | 2966300000.0 | 3377400000.0 | 3596500000.0 | 3826000000.0 |
| Gain Loss On Investment Securities | | -117000000.0 | -4800000.0 | -72100000.0 | -3600000.0 | -3700000.0 |
| Gain Loss On Sale Of Business | 0.0 | -400700000.0 | 0.0 | 0.0 | | |
| Gain Loss On Sale Of PPE | 0.0 | -30400000.0 | 0.0 | 0.0 | | |
| Income Tax Paid Supplemental Data | | 755000000.0 | 973400000.0 | 1109400000.0 | 1197600000.0 | 1095500000.0 |
| Interest Paid Supplemental Data | | 133300000.0 | 133200000.0 | 129900000.0 | 129900000.0 | 129900000.0 |
| Investing Cash Flow | | 58400000.0 | -489800000.0 | 20900000.0 | -82600000.0 | -75800000.0 |
| Issuance Of Capital Stock | 0.0 | 965000000.0 | 0.0 | 0.0 | | |
| Issuance Of Debt | | 0.0 | 741000000.0 | 0.0 | 0.0 | 742300000.0 |
| Long Term Debt Issuance | | 0.0 | 741000000.0 | 0.0 | 0.0 | 742300000.0 |
| Long Term Debt Payments | | 0.0 | -756200000.0 | -16400000.0 | 0.0 | -750000000.0 |
| Net Business Purchase And Sale | | 144700000.0 | -402000000.0 | 95500000.0 | 9900000.0 | 11000000.0 |
| Net Income From Continuing Operations | | 2636900000.0 | 2691000000.0 | 3226200000.0 | 3525800000.0 | 3626800000.0 |
| Net Investment Purchase And Sale | | 1600000.0 | 1900000.0 | 1800000.0 | 1500000.0 | 1600000.0 |
| Net Issuance Payments Of Debt | | 0.0 | -15200000.0 | -16400000.0 | 0.0 | -7700000.0 |
| Net Long Term Debt Issuance | | 0.0 | -15200000.0 | -16400000.0 | 0.0 | -7700000.0 |
| Net Other Financing Charges | | 71133000000.0 | -22733000000.0 | -45087400000.0 | 8660700000.0 | 26182400000.0 |
| Net PPEPurchase And Sale | | -87900000.0 | -89700000.0 | -76400000.0 | -94000000.0 | -88400000.0 |
| Net Preferred Stock Issuance | 0.0 | 965000000.0 | 0.0 | 0.0 | | |
| Net Short Term Debt Issuance | -304600000.0 | 0.0 | 0.0 | | | |
| Operating Cash Flow | | 2402400000.0 | 3056000000.0 | 3453800000.0 | 3690500000.0 | 3914400000.0 |
| Operating Gains Losses | | -548100000.0 | -4800000.0 | -72100000.0 | -3600000.0 | -3700000.0 |
| Other Non Cash Items | | -20000000.0 | 41300000.0 | 34400000.0 | -3000000.0 | -900000.0 |
| Preferred Stock Issuance | 0.0 | 965000000.0 | 0.0 | 0.0 | | |
| Purchase Of Business | | -57400000.0 | -413100000.0 | -2400000.0 | -3600000.0 | -2500000.0 |
| Purchase Of Investment | | -7800000.0 | -4400000.0 | -4100000.0 | -4500000.0 | -6300000.0 |
| Purchase Of PPE | | -127200000.0 | -89700000.0 | -76400000.0 | -94000000.0 | -88400000.0 |
| Repayment Of Debt | | 0.0 | -756200000.0 | -16400000.0 | 0.0 | -750000000.0 |
| Sale Of Business | | 202100000.0 | 11100000.0 | 97900000.0 | 13500000.0 | |
| Sale Of Investment | | 9400000.0 | 6300000.0 | 5900000.0 | 6000000.0 | 7900000.0 |
| Sale Of PPE | 0.0 | 39300000.0 | 0.0 | 0.0 | | |
| Short Term Debt Payments | -304600000.0 | 0.0 | 0.0 | | | |
| Stock Based Compensation | | 75200000.0 | 84300000.0 | 82900000.0 | 89500000.0 | 87400000.0 |
