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Income Taxes - Tax Provision Summary (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Current provision      
Federal $ 55.1 $ 50.4 $ (14.6)
State 17.3 11.9 1.1
Foreign 38.8 19.5 57.1
Total current 111.2 81.8 43.6
Deferred provision      
Federal (3.4) (10.8) 11.4
State (3.4) (8.0) (4.5)
Foreign (1.8) 11.7 (0.9)
Total deferred (8.6) (7.1) 6.0
Effective income tax provision $ 102.6 $ 74.7 $ 49.6