Investments (Net Investment Income) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Net Investment Income [Line Items]
Less: Investment expenses	$ 518	$ 526
Net investment income	5,355	4,885
Securities Investment
Net Investment Income [Line Items]
Gross Investment Income, Operating	6,192	5,638
Net investment income	5,674	5,112
Fixed maturity securities AFS
Net Investment Income [Line Items]
Gross Investment Income, Operating	3,900	3,467
Equity Securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	6	9
FVO securities
Net Investment Income [Line Items]
Gross Investment Income, Operating	(30)	(20)
Mortgage loans (1)
Net Investment Income [Line Items]
Gross Investment Income, Operating	1,079	1,139
Policy loans
Net Investment Income [Line Items]
Gross Investment Income, Operating	109	107
Real Estate and Real Estate Joint Ventures
Net Investment Income [Line Items]
Gross Investment Income, Operating	226	207
OLPI (1)
Net Investment Income [Line Items]
Gross Investment Income, Operating	458	220
Cash, cash equivalents and short-term investments (1)
Net Investment Income [Line Items]
Gross Investment Income, Operating	224	250
Operating joint ventures
Net Investment Income [Line Items]
Gross Investment Income, Operating	(1)	20
Other Investments
Net Investment Income [Line Items]
Net investment income	221	239
Unit-linked investments
Net Investment Income [Line Items]
Net investment income	$ (319)	$ (227)

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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