Income Taxes - Provision For Income Taxes From Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal U.S.	$ 17.7	$ 13.1	$ 18.9
Non-U.S.	26.9	13.5	34.6
State and local	4.4	0.9	5.2
Deferred:
Federal U.S.	(2.2)	(13.1)	(0.7)
Non-U.S.	(57.5)	(72.7)	(8.3)
State and local	1.7	(4.2)	(0.1)
Income tax provision	$ (9.0)	$ (62.5)	$ 49.6