Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Proceeds	$ 20,710	$ 10,923	$ 34,734	$ 26,563
Gross investment gains	231	145	340	363
Gross investment (losses)	(1,001)	(132)	(1,404)	(391)
Realized gains (losses) on sales and disposals	(770)	13	(1,064)	(28)
Net credit loss (provision) release (change in ACL recognized in earnings)	94	5	(170)	(21)
Impairment (loss)	5	(13)	(35)	(13)
Net credit loss (provision) release and impairment (loss)	99	(8)	(205)	(34)
Net investment gains (losses)	(445)	434	(656)	437
Equity securities	0	(2)	(30)	(34)
Equity Securities, FV-NI, Unrealized Gain (Loss)	(42)	57	(62)	164
Equity Securities, FV-NI, Gain (Loss)	(42)	55	(92)	130
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Net investment gains (losses)	$ (671)	$ 5	$ (1,269)	$ (62)

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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