Income Taxes - Income (Loss) 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	$ 14.1	$ 42.1	$ 26.7
Foreign	2.4	3.6	(1.5)
Income from operations before income taxes	$ 16.5	$ 45.7	$ 25.2