Contingencies And Other Risks (Schedule Of Changes In Reserve And Warranty Obligations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Loss Contingency [Abstract]
Representation And Warranty Obligations Reserve Beginning Balance	$ 25	$ 124	$ 105	$ 825
Provision for mortgage representation and warranty expenses, Loans sales	0	3	5	11
Provision for mortgage representation and warranty expenses, Change in estimate continuing operations	22	30	103	67
Provision for mortgage representation and warranty expenses	22	33	108	78
Resolved Claims On Unpaid Principal Balance	(3)	(30)	(44)	(117)
Representation And Warranty Obligations Recoveries	0	0	2	6
Other activity impacting Representation and Warranty liability			(127)	(665)
Representation And Warranty Obligations Reserve Ending Balance	$ 44	$ 127	$ 44	$ 127