Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Proceeds	$ 54,612	$ 40,809	$ 51,052
Gross investment gains	761	1,125	889
Gross investment (losses)	(656)	(674)	(493)
Realized gains (losses) on sales and disposals	105	451	396
Net credit loss (provision) release (change in ACL recognized in earnings)	(15)	(91)	0
Impairment (loss) (1)	(24)	(63)	(129)
Net credit loss (provision) release and impairment (loss)	39	154	129
Net Investment Gains (Losses)	711	634	854
Equity securities	(69)	16	50
Equity Securities, FV-NI, Unrealized Gain (Loss)	177	(153)	84
Equity Securities, FV-NI, Gain (Loss)	108	(137)	134
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Net Investment Gains (Losses)	$ 66	$ 297	267
Foreign government
Debt Securities, Available-for-sale [Line Items]
OTTI losses			(81)
Consumer Domestic Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
OTTI losses			(23)
Industrial Domestic Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
OTTI losses			(22)
RMBS
Debt Securities, Available-for-sale [Line Items]
OTTI losses			(2)
Finance Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
OTTI losses			$ (1)

Amount of increase (decrease) in allowance for credit loss of 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 cash inflow from sale of 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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