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Income Taxes (Schedule Of Income Tax Provision) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
Income before provision for income taxes | $ 1,260.9 | $ 549.5 | $ 855.9
Current provision for income taxes, Federal | 217.9 | 53.8 | 94.1
Current provision for income taxes, State | 38.6 | 6.6 | 18.7
Current provision for income taxes | 256.5 | 60.4 | 112.8
Deferred provision for income taxes, Federal | 36.7 | 57.3 | 70.7
Deferred provision for income taxes, State | 7.9 | 11.0 | 14.8
Deferred provision for income taxes | 44.6 | 68.3 | 85.5
Interest | 1.5 | (0.2) | 1.5
Unrecognized Tax Benefits, Income Tax Penalties Expense | 0.0 | 0.0 | 0.0
Interest and penalties expense (benefit) | 1.5 | (0.2) | 1.5
Provision for income taxes | $ 302.6 | $ 128.5 | $ 199.8

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