Other Assets (Schedule Of Other Assets) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Other Assets [Abstract]
Property, Plant and Equipment, Gross	$ 724	$ 691
Accumulated depreciation	(474)	(456)
Property, Plant and Equipment, Net	250	235
Restricted cash collections for securitization trusts	2,021	2,010
Deferred Tax Assets, Net	1,142	1,369
Nonmarketable equity investments	733	418
Other accounts receivable	392	158
Derivative Asset, Fair Value, Gross Asset	224	233
Cash reserve deposits held for securitization trusts	208	252
Cash and securities collateral placed with counterparties	106	125
Restricted Cash and Cash Equivalents	105	120
Other Assets, Miscellaneous	1,401	1,401
Other Assets	6,582	6,321
Federal Home Loan Bank Stock	271	391
Federal Reserve Bank Stock	$ 435	$ 0