Income Taxes - Income from Continuing Operations Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (58.2)	$ (27.7)	$ 26.2
Outside the United States	25.7	20.4	28.7
(Loss) income before income taxes	$ (32.5)	$ (7.3)	$ 54.9