Income Taxes Income by Region (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S.	$ (42.1)	$ (1,505.4)	$ 185.1
Non-U.S.	52.7	23.5	51.4
Income (loss) before income taxes	$ 10.6	$ (1,481.9)	$ 236.5