Income Taxes - Income (Loss) Before Income Taxes and Non-Controlling Interests (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Examination
Total	$ 81.1	$ 140.9	$ (53.2)
Domestic
Income Tax Examination
Total	(11.6)	(96.3)	(214.7)
Foreign
Income Tax Examination
Total	$ 92.7	$ 237.2	$ 161.5