Investments (Net Investment Income) (Details) - 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 Income, Investment Expense	$ 556	$ 527	$ 1,074	$ 1,053
Net investment income (1)	6,702	5,661	12,057	10,546
Securities Investment
Net Investment Income [Line Items]
Gross Investment Income, Operating	6,260	5,690	12,451	11,328
Net investment income (1)	5,704	5,163	11,377	10,275
Fixed maturity securities AFS
Net Investment Income [Line Items]
Gross Investment Income, Operating	4,094	3,608	7,994	7,075
Equity Securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	4	3	10	12
FVO securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	185	107	155	87
Mortgage loans (1)
Net Investment Income [Line Items]
Gross Investment Income, Operating	1,097	1,104	2,176	2,243
Policy loans
Net Investment Income [Line Items]
Gross Investment Income, Operating	108	113	217	220
Real Estate and Real Estate Joint Ventures
Net Investment Income [Line Items]
Gross Investment Income, Operating	248	239	474	446
OLPI (1)
Net Investment Income [Line Items]
Gross Investment Income, Operating	138	124	596	344
Cash, cash equivalents and short-term investments (1)
Net Investment Income [Line Items]
Gross Investment Income, Operating	217	254	441	504
Operating joint ventures
Net Investment Income [Line Items]
Gross Investment Income, Operating	85	38	84	58
Other Investments
Net Investment Income [Line Items]
Net investment income (1)	84	100	304	339
Unit-linked investments
Net Investment Income [Line Items]
Net investment income (1)	$ 998	$ 498	$ 680	$ 271

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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