Investments (Components of Net Investment Gains Losses - Asset Type) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Marketable Securities, Gain (Loss) [Abstract]
Fixed maturity securities AFS	$ (1,912)	$ 66	$ 297
Equity Securities, FV-NI, Gain (Loss)	(133)	108	(137)
Other net investment gains (losses):
Mortgage loans	21	(18)	(213)
Real estate and real estate joint ventures (excluding changes in estimated fair value)	653	502	7
Other limited partnership interests (excluding changes in estimated fair value)	53	(6)	(15)
Other gains (losses)	178	131	198
Subtotal - investment portfolio gains (losses)	(1,140)	783	137
Change In Estimated Fair Value Of Other Limited Partnership Interests And Real Estate Joint Ventures	(14)	45	(4)
Non-investment portfolio gains (losses)	(108)	701	(243)
Subtotal	(122)	746	(247)
Net investment gains (losses)	$ (1,262)	$ 1,529	$ (110)

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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