Investments- Rollforward of Cumulative Credit Losses (Details 8) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Credit Losses on Fixed Income Securities
Beginning balance	$ (229)	$ (318)	$ (299)	$ (345)
Additional credit loss for securities previously other-than-temporarily impaired	0	0	2	(12)
Additional credit loss for securities not previously other-than-temporarily impaired	(3)	(2)	(4)	(19)
Reduction in credit loss for securities disposed or collected	9	12	19	68
Reduction in credit loss for securities the Company has made the decision to sell or more likely than not will be required to sell	0	0	0	0
Change in credit loss due to accretion of increase in cash flows	1	0	1	0
Ending balance	(222)	(308)	(222)	(308)
LBL
Credit Losses on Fixed Income Securities
Reduction in credit loss for securities disposed or collected	$ 0	$ 0	$ 59	$ 0