Income Taxes - Components of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 18.8	$ 14.5	$ 16.6
State	3.8	2.2	4.6
Non-U.S.	39.6	41.1	32.9
Current provision for income taxes	62.2	57.8	54.1
Deferred:
Federal	(70.8)	(15.3)	(6.7)
State	(6.1)	(2.1)	(5.2)
Non-U.S.	(5.2)	(10.9)	(21.2)
Deferred provision for income taxes	(82.1)	(28.3)	(33.1)
(Benefit)/Provision for income taxes	$ (19.9)	$ 29.5	$ 21.0