Income Taxes - Schedule of Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income before income taxes:
U.S.	$ 21.7	$ 0.8	$ 284.1
International	0.3	(28.5)	95.6
Income (loss) income before income taxes, and equity in earnings from affiliated companies	22.0	(27.7)	379.7
Current:
U.S.	5.4	(11.3)	49.1
International	3.1	1.7	11.8
Current income tax expense (benefit)	8.5	(9.6)	60.9
Deferred:
U.S.	(2.3)	0.1	3.8
International	(0.3)	(51.5)	12.1
Deferred income tax (benefit) expense	(2.6)	(51.4)	15.9
Total income tax expense (benefit)	$ 5.9	$ (61.0)	$ 76.8