Investments (Net realized investment gains (losses)) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Fixed maturity securities:
Gross gains	$ 23	$ 50	$ 94	$ 159
Gross losses	(134)	(28)	(222)	(68)
Net investment gains (losses) on fixed maturity securities	(111)	22	(128)	91
Equity securities	(2)	(2)	(111)	17
Derivatives	24	2	79	7
Mortgage loans	(8)	0	(8)	0
Short term investments and other	1	0	2	2
Net investment gains (losses)	(96)	22	(166)	117
Non-redeemable preferred stock
Fixed maturity securities:
Net investment income (loss) recognized due to the change in fair value of common stock held as of September 30, 2022 and 2021	$ (2)	$ (2)	$ (109)	$ 15

Investments And Derivatives, Realized Gain (Loss)

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Realized Gain (Loss) On Short Term Investments

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

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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