Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (808)	$ 968	$ (883)
Other comprehensive income (loss):
Unrealized investment gains (losses), net of related offsets	3,167	(1,355)	590
Unrealized gains (losses) on derivatives	(21)	22	(166)
Foreign currency translation adjustments	12	(4)	9
Other comprehensive income (loss), before income tax	3,158	(1,337)	433
Income tax (expense) benefit related to items of other comprehensive income (loss)	(661)	297	156
Other comprehensive income (loss), net of tax	2,497	(1,040)	589
Comprehensive income (loss)	1,689	(72)	(294)
Less: Comprehensive income (loss) attributable to noncontrolling interests, net of income tax	1	1	0
Comprehensive income (loss), net of tax, Attributable to Parent	$ 1,688	$ (73)	$ (294)