Investments (Fixed Maturity Securities AFS - Sales and Disposals and Credit Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Securities, Available-for-sale [Line Items]
Proceeds	$ 8,412	$ 20,710	$ 23,456	$ 34,734
Gross investment gains	73	231	366	340
Gross investment (losses)	(213)	(1,001)	(1,069)	(1,404)
Realized gains (losses) on sales and disposals	(140)	(770)	(703)	(1,064)
Net credit loss (provision) release (change in ACL recognized in earnings)	(7)	94	(17)	(170)
Impairment (losses)	(849)	5	(856)	(35)
Net credit loss (provision) release and impairment (losses)	(856)	99	(873)	(205)
Net investment gains (losses)	(20)	(445)	(566)	(656)
Equity securities	15	0	22	(30)
Equity Securities, FV-NI, Unrealized Gain (Loss)	17	(42)	58	(62)
Equity Securities, FV-NI, Gain (Loss)	32	(42)	80	(92)
Fixed Maturity Securities
Debt Securities, Available-for-sale [Line Items]
Net investment gains (losses)	$ (996)	$ (671)	$ (1,576)	$ (1,269)