Reinsurance Reinsurance (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reinsurance [Abstract]
Gross Fee Income Earned Premium and Other Life	$ 828	$ 908	$ 2,401	$ 2,816
Assumed Premiums Earned, Life	18	15	53	50
Ceded Premiums Earned, Life	(420)	(181)	(1,234)	(530)
Net Fee Income Earned Premium and Other Life	$ 426	$ 742	$ 1,220	$ 2,336