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Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Current Income Taxes      
Federal $ (6) $ 7 $ (3)
State 8 113 92
Total current income taxes 2 120 89
Deferred Income Taxes      
Federal 245 376 87
State 44 (25) (83)
Total deferred income taxes 289 351 4
Total income tax expense $ 291 $ 471 $ 93