Income Taxes - Income (Loss) Before Income Taxes by Domestic and Foreign Locations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ 68.5	$ (143.8)	$ (38.1)
Foreign	120.8	151.6	42.1
Income before income taxes	$ 189.3	$ 7.8	$ 4.0	$ 189.3