Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 859	[1]	$ 479	[1],[2]	$ 691
Other Comprehensive Income (Loss), Net of Tax, Changes In:
Net unrealized gains (losses) on investments with other-than-temporary impairments	3		(9)		15
Net unrealized gains (losses) on other investments	252		(552)		267
Net unrealized gains (losses) on investments	255		(561)		282
Net unrealized losses on discontinued operations	0		0		(22)
Foreign currency translation adjustment	(114)		(139)		(95)
Pension and postretirement benefits	1		(15)		(207)
Other comprehensive income (loss), net of tax	142		(715)		(42)
Total comprehensive income (loss)	$ 1,001		$ (236)		$ 649

[1] Net income (loss) in the first quarter of 2016 and the second quarter of 2015 included a charge related to the application of retroactive reinsurance accounting to adverse reserve development ceded under the 2010 A&EP Loss Portfolio Transfer in our Corporate & Other Non-Core segment.

[2] Net income (loss) in the fourth quarter of 2015 included a charge related to recognition of a premium deficiency in our long term care business.