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Income Taxes (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Income Tax Disclosure [Abstract]          
Effective income tax rate (as a percent)   21.20% 23.00% 19.90% 21.70%
Income tax benefit from tax settlement $ 4.1        
Income tax benefit, related interest expense from tax settlement $ 1.0        
Effective income tax rate, decrease from tax settlement (as a percent)       1.30%