Income Taxes - Pre-tax Income and Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Continuing operations:
U.S. domestic	$ 1,102.0	$ 417.3	$ 353.3
Foreign	93.6	65.2	50.9
Income from continuing operations before income taxes	1,195.6	482.5	404.2
Discontinued operations:
U.S. domestic	(11.8)	(117.2)	(21.8)
Foreign	6.4	127.1	13.5
Income (loss) from discontinued operations before income taxes	(5.4)	9.9	(8.3)
Total income before income taxes	1,190.2	492.4	395.9
Current provision:
Federal and state	283.4	74.7	86.0
Foreign	18.8	22.8	18.6
Total current provision	302.2	97.5	104.6
Deferred provision (benefit):
Federal and state	(27.3)	7.2	(14.8)
Foreign	(4.5)	(9.2)	(11.3)
Total deferred benefit	(31.8)	(2.0)	(26.1)
Total provision for income taxes	270.4	95.5	78.5
Reconciliation of taxes from continuing operations
Taxes at U.S. statutory rate	251.1	101.3	84.9
State and local taxes, net of federal income tax benefit	39.7	14.8	11.5
Equity compensation windfall	(6.0)	(13.7)	(2.1)
Change in unrecognized tax benefit	(2.7)	(10.0)	(11.5)
Tax credits	(6.7)	(4.7)	(4.3)
Other, net	(5.0)	7.8	0.0
Total provision for income taxes	$ 270.4	$ 95.5	$ 78.5
Effective income tax rate on continuing operations (as a percent)	22.60%	19.80%	19.40%
Income Taxes Paid, Net [Abstract]
Cash payments for income taxes, net of refunds	$ 295.8	$ 132.8	$ 116.6