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Income Taxes - Income Before Income Tax (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
Domestic $ 1,186.7 $ 934.3 $ 854.1
Foreign 111.1 68.0 95.6
Income before income taxes $ 1,297.8 $ 1,002.3 $ 949.7