Commitments and Guarantees (Reinsurance Agreements Exposure and Reserves) (Details) - Reinsurance Agreements [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Maximum Exposure	$ 2,054		$ 4,297
Reserves, Beginning balance	13	$ 32
Paid Losses	(8)	(17)
Net Provision	5	10
Changes to Agreements		(10)
Reserves, Ending balance	10	$ 15
Accidental Death and Dismemberment [Member]
Loss Contingencies [Line Items]
Maximum Exposure	1,678		1,774
Credit Life, Accident and Health [Member]
Loss Contingencies [Line Items]
Maximum Exposure	376		467
Lender Placed Hazard [Member]
Loss Contingencies [Line Items]
Maximum Exposure			2,056
Maximum Exposure to Quota Share Agreements with 100% Reinsurance
Loss Contingencies [Line Items]
Maximum Exposure	$ 375		$ 466