Investments - Net Investment Income (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net Investment Income [Line Items]
Other investments	$ 466	$ 271	$ 230
Investment income	6,195	5,713	6,344
Investment expense	(570)	(606)	(611)
Net investment income	5,625	5,107	5,733
Fixed maturity AFS securities
Net Investment Income [Line Items]
Gross investment income	4,140	4,088	4,961
Trading securities
Net Investment Income [Line Items]
Gross investment income	96	117	158
Equity securities
Net Investment Income [Line Items]
Gross investment income	16	21	13
Mortgage loans on real estate
Net Investment Income [Line Items]
Gross investment income	1,034	881	752
Policy loans
Net Investment Income [Line Items]
Gross investment income	101	93	102
Cash and invested cash
Net Investment Income [Line Items]
Gross investment income	320	227	118
Commercial mortgage loan prepayment and bond makewhole premiums
Net Investment Income [Line Items]
Gross investment income	$ 22	$ 15	$ 10

Gross Investment Income Including Derivatives, Operating

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Gross Investment Income, Operating, Net

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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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