Investments (Components of Net Investment Gains Losses - Asset Type) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Marketable Securities, Gain (Loss) [Abstract]
Fixed maturity securities AFS	$ (580)	$ (598)
Equity Securities, FV-NI, Gain (Loss)	48	(50)
Other net investment gains (losses):
Mortgage loans	(164)	44
Real estate and real estate joint ventures (excluding changes in estimated fair value)	18	4
Other limited partnership interests (excluding changes in estimated fair value)	9	18
Other gains (losses)	(23)	66
Subtotal - investment portfolio gains (losses)	(692)	(516)
Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures	(5)	7
Non-investment portfolio gains (losses)	13	(8)
Subtotal	8	(1)
Net investment gains (losses)	$ (684)	$ (517)

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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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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