Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 339	$ 482	$ 1,226	$ 1,636
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in net unrealized gain (loss) on fixed maturities	(1,180)	(274)	(4,654)	(904)
Change in unrealized losses on fixed maturities for which an allowance for credit losses has been recorded	(5)	0	(5)	0
Changes in net gain on cash flow hedging instruments	39	1	63	1
Change in foreign currency translation adjustments	(19)	(4)	(27)	(1)
Changes in pension and other postretirement plan adjustments	(13)	(14)	(37)	(41)
Other comprehensive loss, net of tax	(1,152)	(263)	(4,586)	(863)
Comprehensive income (loss)	$ (813)	$ 219	$ (3,360)	$ 773