Income Taxes - Schedule of Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income before income taxes:
U.S.	$ 0.8	$ 284.1	$ 222.9
International	(28.5)	95.6	110.6
(Loss) income before income taxes, and equity in earnings	(27.7)	379.7	333.5
Current:
U.S.	(11.3)	49.1	18.3
International	1.7	11.8	14.9
Current income tax (benefit) expense	(9.6)	60.9	33.2
Deferred:
U.S.	0.1	3.8	26.8
International	(51.5)	12.1	2.5
Deferred income tax (benefit) expense	(51.4)	15.9	29.3
Total income tax (benefit) expense	$ (61.0)	$ 76.8	$ 62.5