Income Taxes - Components of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 45.8	$ 18.8	$ 14.5
State	6.7	3.8	2.2
Non-U.S.	41.9	39.6	41.1
Current provision for income taxes	94.4	62.2	57.8
Deferred:
Federal	(18.6)	(70.8)	(15.3)
State	(0.0)	(6.1)	(2.1)
Non-U.S.	(13.5)	(5.2)	(10.9)
Deferred provision for income taxes	(32.1)	(82.1)	(28.3)
Provision/(benefit) for income taxes	$ 62.3	$ (19.9)	$ 29.5