Investments - Net Investment Income (Details) - Consolidated Entity Excluding Variable Interest Entities (VIE) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Net Investment Income [Line Items]
Investment revenue	$ 5,431	$ 4,843	$ 10,637	$ 9,231
Investment expenses	(443)	(414)	(880)	(811)
Net investment income	4,988	4,429	9,757	8,420
AFS securities
Net Investment Income [Line Items]
Investment revenue	3,135	2,884	6,200	5,555
Trading securities
Net Investment Income [Line Items]
Investment revenue	142	66	264	108
Equity securities
Net Investment Income [Line Items]
Investment revenue	12	29	28	44
Mortgage loans
Net Investment Income [Line Items]
Investment revenue	1,588	1,262	3,132	2,385
Investment funds
Net Investment Income [Line Items]
Investment expenses	16	129	12	169
Funds withheld at interest
Net Investment Income [Line Items]
Investment revenue	222	244	437	509
Other Investments
Net Investment Income [Line Items]
Investment revenue	$ 316	$ 229	$ 564	$ 461

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Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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