Other Assets (Schedule Of Other Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Other Assets [Abstract]
Property, Plant and Equipment, Gross	$ 648	$ 775
Accumulated depreciation	(436)	(550)
Property, Plant and Equipment, Net	212	225
Restricted cash collections for securitization trusts	1,791	2,221
Deferred Tax Assets, Net	1,459	1,812
Nonmarketable equity securities	313	271
Derivative Asset, Fair Value, Gross Asset	299	263
Cash reserve deposits held for securitization trusts	255	303
Unamortized Debt Issuance Expense	230	238
Other accounts receivable	196	298
Cash and securities collateral placed with counterparties	72	236
Other Assets, Miscellaneous	1,197	1,435
Other Assets	$ 6,024	$ 7,302