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Income Taxes - Provisions For Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Current:      
Federal $ 437 $ 645 $ 553
State 105 132 136
Total current taxes 542 777 689
Deferred:      
Federal (27) 206 186
State (22) (123) (2)
Total deferred taxes (49) 83 184
Income taxes $ 493 $ 860 $ 873