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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amount:
Federal income tax	$ 672	$ 700	$ 466
State income tax, net of federal benefit	64	69	50
Dividend received deduction	(34)	(36)	(46)
Release of valuation allowance	0	0	(38)
General business credit	(1)	0	(36)
Other	14	(23)	(27)
Total	$ 715	$ 710	$ 369
Percent:
Federal income tax, percent	21.00%	21.00%	21.00%
State income tax, net of federal benefit, percent	2.00%	2.00%	2.20%
Dividend received deduction, percent	(1.10%)	(1.10%)	(2.10%)
Release of valuation allowance, percent	0.00%	0.00%	(1.70%)
General business credit, percent	0.00%	0.00%	(1.60%)
Other, percent	0.40%	(0.70%)	(1.20%)
Total, percent	22.30%	21.20%	16.60%

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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