Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
U.S. federal	$ (33.1)	$ 6.6	$ (14.6)
U.S. state and local	5.8	6.7	2.9
Non-U.S.	109.1	79.6	45.2
Deferred:
U.S. federal	(19.5)	(33.4)	(13.2)
U.S. state and local	(0.9)	(2.9)	0.5
Non-U.S.	(83.2)	(45.2)	(7.9)
Provision (benefit) for income taxes	$ (21.8)	$ 11.4	$ 12.9