Income Taxes - Components of The Provision For Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Current income tax expense	$ (0.4)	$ (0.8)	$ (1.1)
Deferred tax benefit (expense)	95.3	(24.6)	(142.1)
Total income tax benefit (expense)	$ 94.9	$ (25.4)	$ (143.2)