Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	26.40%	8.10%	25.70%	23.10%
Unrecognized tax benefits	$ 16.4		$ 16.4
Unrecognized tax benefits that would affect the effective tax rate if recognized	15.8		15.8
Unrecognized tax benefits that would result in adjustments to other tax accounts	0.6		0.6
Unrecognized tax benefits, accrual for payment of interest	$ 1.6		$ 1.6