Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 634	$ 525	$ 517
Other Comprehensive Income
Change in unrealized gains and losses on investments, net of tax of $(220), $134, and $161, respectively	(405)	250	299
Amortization of pension actuarial loss and prior service cost, net of tax of $(2), $(6), and $29, respectively	(4)	(12)	54
Change in life deferred acquisition costs, life policy reserves and other, net of tax of $4, $2, and $12, respectively	9	2	22
Other comprehensive (loss) income	(400)	240	375
Comprehensive Income	$ 234	$ 765	$ 892