Income Taxes - Pre-tax Income and Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Continuing operations:
U.S. domestic	$ 1,106.5	$ 924.1	$ 1,099.5
Foreign	4.4	6.3	24.2
Income from continuing operations before income taxes	1,110.9	930.4	1,123.7
Discontinued operations:
U.S. domestic	(15.2)	(121.9)	(9.3)
Foreign	495.5	143.6	75.9
Income from discontinued operations before income taxes	480.3	21.7	66.6
Total income before income taxes	1,591.2	952.1	1,190.3
Current provision:
Federal and state	282.1	235.2	280.1
Foreign	22.8	4.5	8.4
Total current provision	304.9	239.7	288.5
Deferred benefit:
Federal and state	(35.6)	(20.2)	(19.1)
Foreign	(23.5)	(8.0)	(3.7)
Total deferred benefit	(59.1)	(28.2)	(22.8)
Total provision for income taxes	245.8	211.5	265.7
Reconciliation of taxes from continuing operations
Taxes at U.S. statutory rate	233.3	195.4	236.0
State and local taxes, net of federal income tax benefit	33.8	31.4	39.5
Equity compensation windfall	(9.3)	(3.3)	(4.6)
Tax credits	(9.1)	(3.3)	(3.3)
Other, net	(2.9)	(8.7)	(1.9)
Total provision for income taxes	$ 245.8	$ 211.5	$ 265.7
Effective income tax rate on continuing operations (as a percent)	22.10%	22.70%	23.60%
Income Taxes Paid, Net [Abstract]
Cash payments for income taxes, net of refunds	$ 324.2	$ 247.7	$ 295.8