Income Taxes - Components of Income Tax Expense (Benefit) from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal	$ 32.0	$ 22.6	$ 21.9
State	14.7	11.2	14.4
Foreign	2.4	1.6	1.5
Total current expense (benefit)	49.1	35.4	37.8
Deferred:
Federal	(9.9)	(6.3)	4.7
State	0.0	0.5	1.5
Foreign	(0.3)	(0.2)	0.2
Total deferred expense (benefit)	(10.2)	(6.0)	6.4
Total tax expense (benefit)	$ 38.9	$ 29.4	$ 44.2