Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 64.8	$ 28.9	$ 10.8
State	10.9	3.4	2.4
International	74.4	46.0	30.5
Current income tax provision	150.1	78.3	43.7
Deferred:
Federal and state	7.3	0.2	10.3
International	(50.2)	(6.0)	5.0
Deferred income tax provision	(42.9)	(5.8)	15.3
Income tax expense	$ 107.2	$ 72.5	$ 59.0