Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 651	$ 340	$ 1,733	$ 1,227
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in net unrealized gain (loss) on fixed maturities, available-for-sale ("AFS")	(671)	(1,180)	(354)	(4,669)
Change in unrealized losses on fixed maturities for which an allowance for credit losses has been recorded	1	(5)	(2)	(5)
Changes in net gain on cash flow hedging instruments	(4)	39	(13)	63
Change in foreign currency translation adjustments	(1)	(19)	4	(27)
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense	15	24	12	96
Change in pension and other postretirement plan adjustments	6	13	16	37
Other comprehensive loss, net of tax	(654)	(1,128)	(337)	(4,505)
Comprehensive income (loss)	$ (3)	$ (788)	$ 1,396	$ (3,278)