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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Tax Disclosure [Abstract]        
Provision for income tax expense $ 26.9 $ 34.3 $ 65.8 $ 88.6