Reinsurance - Effects of Reinsurance (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Effects of Reinsurance [Line Items]
Ceded premiums and fees	$ 128	$ 149	$ 269	$ 274
Reinsurance recoveries	157	162	338	(12)
Individual Life Insurance And Annuity [Member]
Effects of Reinsurance [Line Items]
Ceded premiums and fees	44	45	89	91
Reinsurance recoveries	69	94	168	182
Other Product Segments [Member]
Effects of Reinsurance [Line Items]
Ceded premiums and fees	84	104	180	183
Reinsurance recoveries	$ 88	$ 68	$ 170	$ (194)