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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]      
Income Before Income Taxes $ 500 $ 482 $ 422
Income tax expense at statutory rate 105 101 89
State and local income taxes, net of federal benefit 18 24 17
State tax rate changes (18) (25) (3)
Other, net (1) 0 1
Income Tax Expense $ 104 $ 100 $ 104
Effective income tax rate 20.90% 20.70% 24.70%