Income Taxes - Components of Income Tax Benefit (Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current tax benefit (expense)
Federal	$ (89.0)	$ (100.0)	$ 47.0
State	(15.3)	(23.1)	0.2
Foreign	0.0	0.0	(0.4)
Total current	(104.3)	(123.1)	46.8
Deferred tax benefit (expense)
Federal	33.7	(11.9)	103.6
State	78.5	13.3	14.7
Foreign	38.5	3.1	0.0
Total deferred	150.7	4.5	118.3
Total income tax benefit (expense)	$ 46.4	$ (118.6)	$ 165.1