Claim and Claim Adjustment Expense Reserves Impact of Loss Portfolio Transfer on the Consolidated Statement of Operations (Details) - Loss Portfolio Transfer [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended		48 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2013
Net AEP adverse development before consideration of LPT	$ 0	$ 0	$ 150	$ 0	$ 900
Provision for uncollectible third-party reinsurance on AEP	0	0	0	0
Additional amounts ceded under LPT	0	0	150	0
Retroactive reinsurance benefit recognized	(4)	(4)	(75)	(9)
Pretax impact of deferred retroactive reinsurance benefit	$ (4)	$ (4)	$ 75	$ (9)