Income Taxes - Expense Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income tax expense reconciliation
Statutory federal income tax expense	$ (4)	$ (100)	$ 26
State income taxes, net of federal benefit	6	16	16
Change in federal valuation allowance	20	8	7
Goodwill impairment	0	83	0
Sale of businesses	(15)	0	0
Nondeductible compensation	3	7	7
Tax credits	(2)	(3)	(2)
Other differences, net	(2)	(1)	(1)
Total income tax expense (benefit)	$ 6	$ 10	$ 53
Income tax rate reconciliation
Statutory federal income tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	(32.40%)	(3.40%)	12.80%
Change in federal valuation allowance	(99.10%)	(1.70%)	5.70%
Goodwill impairment	0.00%	(17.40%)	0.00%
Sale of businesses	74.00%	0.00%	0.00%
Nondeductible compensation	(13.50%)	(1.40%)	5.60%
Tax credits	11.70%	0.60%	(1.90%)
Other differences, net	4.20%	0.20%	(0.60%)
Total income tax rate	(34.10%)	(2.10%)	42.60%

Amount of the difference between reported income tax expense (benefit) and expected income tax (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to sale of businesses.

No definition available.