Income Taxes - Provision/(Benefit) for Income Taxes and Income Taxes Paid (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 32.2	$ (96.1)	$ 65.5
State	10.4	4.6	9.8
Foreign	123.4	(57.5)	237.7
Current, Total	166.0	(149.0)	313.0
Deferred:
Federal	(115.8)	(24.2)	(90.2)
State	(21.6)	(11.5)	(4.2)
Foreign	(12.3)	47.7	(444.3)
Deferred, Total	(149.7)	12.0	(538.7)
Provision (benefit) for income taxes	16.3	(137.0)	(225.7)
Net income taxes paid	$ 272.8	$ 147.4	$ 192.5