Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	171.90%	(70.90%)	45.60%	39.00%
Income tax expense (benefit)	$ (11.2)	$ (4.2)	$ (40.5)	$ (13.6)
Gain (loss) before benefit for income taxes and equity in net income of affiliates	$ (6.5)	$ 5.7	$ (88.9)	$ (34.8)