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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Income Tax Disclosure [Abstract]          
Effective income tax 21.30% 23.70% 21.90% 23.40%  
Deferred tax assets, net $ 27.9   $ 27.9   $ 32.7
Gross unrecognized tax benefits 35.1   35.1   30.9
Accrued interest and penalties on unrecognized tax benefits $ 3.3   $ 3.3   $ 2.8