Reconciliation of Income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax provision at statutory rate	$ 385.0	$ 379.8	$ 115.5
Impact of goodwill impairment	0.0	0.0	21.4
Other non-deductible expenses, net	7.9	(1.2)	8.2
State income taxes, net of federal benefit	72.8	60.7	24.3
Income tax provision, excluding other reconciling items	465.7	439.3	169.4
Change in valuation allowance, net	0.2	(0.2)	0.3
Adjustments and settlements	(1.3)	(0.2)	0.7
Federal and state tax credits	(4.5)	(1.0)	(0.7)
Other, net	(4.3)	(2.8)	(1.4)
Income tax provision	$ 455.8	$ 435.1	$ 168.3
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income tax provision at statutory rate, %	21.00%	21.00%	21.00%
Impact of goodwill impairment, %	0.00%	0.00%	3.90%
Other non-deductible expenses, net, %	0.40%	(0.10%)	1.50%
State income taxes, net of federal benefit, %	4.00%	3.40%	4.40%
Income tax provision, excluding other reconciling items, %	25.40%	24.30%	30.80%
Change in valuation allowance, net, %	0.00%	0.00%	0.10%
Adjustments and settlements, %	(0.10%)	0.00%	0.10%
Federal and state tax credits, %	(0.20%)	0.00%	(0.10%)
Other, net, %	(0.20%)	(0.20%)	(0.30%)
Income tax provision, %	24.90%	24.10%	30.60%