Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Current	$ (0.7)	$ 27.7	$ 16.9
Deferred	(8.6)	4.4	9.4
Total income tax expense (benefit)	$ (9.3)	$ 32.1	$ 26.3