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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Amount:      
Federal income tax $ 716 $ 672 $ 700
State income tax, net of federal benefit 71 64 69
Dividend received deduction (34) (34) (36)
General business credit (42) (1) 0
Other (24) 14 (23)
Total $ 687 $ 715 $ 710
Percent:      
Federal income tax, percent 21.00% 21.00% 21.00%
State income tax, net of federal benefit, percent 2.10% 2.00% 2.00%
Dividend received deduction, percent (1.00%) (1.10%) (1.10%)
General business credit, percent (1.20%) 0.00% 0.00%
Other, percent (0.70%) 0.40% (0.70%)
Total, percent 20.20% 22.30% 21.20%