Commitments and Guarantees (Reinsurance Agreements Exposure and Reserves) (Details) - Reinsurance Agreements [Member] - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Maximum Exposure	$ 2,118		$ 4,297
Reserves, Beginning balance	13	$ 32
Paid Losses	(6)	(12)
Net Provision	4	6
Changes to Agreements		(10)
Reserves, Ending balance	11	$ 16
Accidental Death and Dismemberment [Member]
Loss Contingencies [Line Items]
Maximum Exposure	1,705		1,774
Credit Life, Accident and Health [Member]
Loss Contingencies [Line Items]
Maximum Exposure	413		467
Lender Placed Hazard [Member]
Loss Contingencies [Line Items]
Maximum Exposure	0		2,056
Maximum Exposure to Quota Share Agreements with 100% Reinsurance
Loss Contingencies [Line Items]
Maximum Exposure	$ 412		$ 466