Income Taxes - Schedule of Components of Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current provision:
Federal	$ 74.4	$ 41.0	$ 66.1
State and local	22.8	19.7	18.5
Foreign	(0.1)	0.0	0.1
Current (benefit) provision	97.1	60.7	84.7
Deferred provision:
Federal	42.5	79.9	7.5
State and local	4.9	28.8	2.3
Foreign	0.0	0.0	0.0
Deferred provision	47.4	108.7	9.8
Income tax provision	$ 144.5	$ 169.4	$ 94.5