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Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Current:      
Federal $ 180.8 $ 391.6 $ 155.4
State 59.0 78.3 56.2
Foreign 77.4 79.8 105.1
Deferred:      
Federal (54.3) (43.1) (24.2)
State (7.6) 2.6 (25.8)
Foreign 4.3 (49.7) (12.7)
Total $ 259.6 $ 459.5 $ 254.0