Investments (Components of Net Investment Gains Losses - Asset Type) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Marketable Securities, Gain (Loss) [Abstract]
Fixed maturity securities AFS	$ (154)	$ (157)	$ (522)	$ (488)
Net investment gains (losses)	17	(31)	50	(22)
Other net investment gains (losses):
Mortgage loans	(141)	(151)	(602)	(246)
Real estate and real estate joint ventures (excluding changes in estimated fair value)	47	128	50	175
Other limited partnership interests (excluding changes in estimated fair value)	4	4	24	(55)
Other gains (losses)	(9)	(57)	(47)	(28)
Subtotal - investment portfolio gains (losses)	(236)	(264)	(1,047)	(664)
Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures	(1)	(1)	(1)	5
Non-investment portfolio gains (losses)	(88)	188	63	(214)
Subtotal	(89)	187	62	(209)
Net investment gains (losses)	$ (325)	$ (77)	$ (985)	$ (873)

Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures.

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The net gain or loss incurred on assets and liabilities held by consolidated securitizations entities and all other gains and losses.

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The net gain (loss) resulting from sales and other disposals of other limited partnership interests.

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Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of realized and unrealized gain (loss) on investment.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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Amount of gain (loss) on sale or disposal of other assets.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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