Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 753	$ 535
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in net unrealized gain (loss) on fixed maturities, available-for-sale ("AFS")	(160)	586
Change in unrealized losses on fixed maturities for which an allowance for credit losses has been recorded	1	(6)
Changes in net gain on cash flow hedging instruments	0	8
Change in foreign currency translation adjustments	(1)	2
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense	5	(8)
Change in pension and other postretirement plan adjustments	7	5
Other comprehensive income (loss), net of tax	(148)	587
Comprehensive income	$ 605	$ 1,122