Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 1,216	$ 1,997	$ 287
Other Comprehensive Income (Loss)
Change in unrealized gains and losses on investments, net of tax (benefit) of $92, $114 and $(72), respectively	344	430	(267)
Amortization of pension actuarial gains and losses and prior service cost, net of tax (benefit) of $(7), $2 and $(1), respectively	(25)	5	(3)
Change in life deferred acquisition costs, life policy reserves and other, net of tax (benefit) of $1, $(3) and $2, respectively	2	(9)	7
Other comprehensive income (loss)	321	426	(263)
Comprehensive Income	$ 1,537	$ 2,423	$ 24