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Income Taxes - Expense Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Amount |  |  |
Statutory federal income tax expense | $ 15 | $ 38 | $ 52
State income taxes, net of federal benefit | 14 | (25) | 8
Change in federal valuation allowance | 7 | 7 | 0
Loss carryback benefit of CARES Act | 0 | 0 | (49)
Nondeductible compensation | 3 | 2 | 6
Tax credits | 0 | 0 | 0
Other differences, net | (2) | (2) | 0
Total income tax expense (benefit) | $ 37 | $ 20 | $ 17
Rate |  |  |
Statutory federal income tax rate | 21.00% | 21.00% | 21.00%
State income taxes, net of federal benefit | 18.90% | (14.10%) | 3.40%
Change in federal valuation allowance | 9.90% | 3.80% | 0.10%
Loss carryback benefit of CARES Act rate | 0.00% | 0.00% | (19.80%)
Nondeductible compensation | 3.60% | 1.30% | 2.60%
Tax credits | (0.60%) | (0.20%) | (0.10%)
Other differences, net | (1.30%) | (0.40%) | (0.60%)
Total income tax rate | 51.50% | 11.40% | 6.60%

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