Other Assets (Schedule Of Other Assets) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Other Assets [Abstract]
Property, Plant and Equipment, Gross	$ 691	$ 693
Accumulated depreciation	(459)	(411)
Property, Plant and Equipment, Net	232	282
Deferred Tax Assets, State Taxes	1,985	1,190
Restricted cash collections for securitization trusts	1,292	2,983
Other accounts receivable	636	525
Cash reserve deposits held for securitization trusts	400	442
Unamortized Debt Issuance Expense	349	425
Derivative Asset, Fair Value, Gross Asset	300	2,298
Cash and securities collateral placed with counterparties	222	1,290
Restricted cash and cash equivalents	212	889
Nonmarketable equity securities	184	303
Other Assets, Miscellaneous	1,247	1,281
Other Assets	$ 7,059	$ 11,908