Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current
U.S. Federal	$ 6.9	$ (3.2)	$ (15.3)
Foreign	0.3	0.2	0.2
State	2.7	1.0	0.1
Total current	9.9	(2.0)	(15.0)
Deferred
U.S. Federal	5.1	9.7	(40.7)
Foreign		0.1
State	2.5	2.7	(11.8)
Total deferred	7.6	12.5	(52.5)
Income tax expense (benefit)	$ 17.5	$ 10.5	$ (67.5)