Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	16.70%	(509.10%)	23.30%	(78.80%)
Income tax expense (benefit)	$ (0.1)	$ 43.0	$ (9.4)	$ 33.2
Gain (loss) before benefit for income taxes and equity in net income of affiliates	$ (0.7)	$ (8.5)	$ (40.5)	$ (42.2)