Loan Sales And Securitizations (Schedule Of Sensitivity Of Fair Value Of Other Retained Interests To Immediate 10 Percent And 20 Percent Adverse Changes Assumptions) (Details) (USD $) In Thousands, unless otherwise specified								6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Jun. 30, 2011 Mortgage Banking [Member] Interest Only [Member]	Jun. 30, 2010 Mortgage Banking [Member] Interest Only [Member]	Jun. 30, 2011 Mortgage Banking [Member] Principal Only [Member]	Jun. 30, 2010 Mortgage Banking [Member] Principal Only [Member]	Jun. 30, 2011 Interest Only [Member]	Jun. 30, 2010 Interest Only [Member]	Jun. 30, 2011 Principal Only [Member]	Jun. 30, 2010 Principal Only [Member]
Fair value of retained interests	$ 1,196,380	$ 769,750	$ 1,806,789	$ 22,643	$ 28,611	$ 8,775	$ 11,340
Weighted average life (in years)								4.5	3.7	4.9	4.6
Annual prepayment rate								17.10%	20.70%	25.60%	25.40%
Annual prepayment rate, Impact on fair value of 10% adverse change								(978)	(1,493)	(303)	(336)
Annual prepayment rate, Impact on fair value of 20% adverse change								(1,893)	(2,875)	(594)	(668)
Annual discount rate on residual cash flows								13.10%	13.60%	18.70%	21.30%
Annual discount rate on servicing cash flows, Impact on fair value of 10% adverse change								(926)	(1,101)	(439)	(449)
Annual discount rate on servicing cash flows, Impact on fair value of 20% adverse change								$ (1,773)	$ (2,113)	$ (872)	$ (900)