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		6 Months Ended		48 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013
Net AEP adverse development before consideration of LPT	$ 150	$ 0	$ 150	$ 0	$ 900
Provision for uncollectible third-party reinsurance on AEP	0	0	0	0
Additional amounts ceded under LPT	150	0	150	0
Retroactive reinsurance benefit recognized	(66)	(1)	(71)	(5)
Pretax impact of unrecognized deferred retroactive reinsurance benefit	$ 84	$ (1)	$ 79	$ (5)