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 tax rate	8.60%	12.50%	(2.00%)	8.00%
Net unrecognized tax benefit	$ 94.6		$ 94.6		$ 74.7
Unrecognized tax benefits that would impact effective tax rate	81.2		81.2
Income tax interest accrued	1.3		1.3
Net deferred tax assets	$ 180.5		$ 180.5