Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 445	$ 249
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in net unrealized gain (loss) on fixed maturities	(1,882)	(925)
Changes in net gain on cash flow hedging instruments	(1)	5
Change in foreign currency translation adjustments	0	1
Changes in pension and other postretirement plan adjustments	(12)	(13)
Other comprehensive loss, net of tax	(1,871)	(906)
Comprehensive loss	$ (1,426)	$ (657)