v2.3.0.11
Variable Interest Entities And Securitization Activities (Fair Value Of Assets And Liabilities) (Details) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Interests purchased in the secondary market (fair value) $ 4,643 $ 4,735
Special Purpose Entities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
   
Retained interests (fair value)    
Interests purchased in the secondary market (fair value)    
Derivative assets (fair value)    
Derivative liabilities (fair value)    
Special Purpose Entities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Investment Grade [Member]
   
Retained interests (fair value)    
Interests purchased in the secondary market (fair value)    
Special Purpose Entities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Non-Investment Grade [Member]
   
Retained interests (fair value)    
Interests purchased in the secondary market (fair value)    
Special Purpose Entities [Member] | Significant Observable Inputs (Level 2) [Member]
   
Retained interests (fair value) 1,952 2,973
Interests purchased in the secondary market (fair value) 1,166 1,184
Derivative assets (fair value) 815 887
Derivative liabilities (fair value) 274 360
Special Purpose Entities [Member] | Significant Observable Inputs (Level 2) [Member] | Investment Grade [Member]
   
Retained interests (fair value) 1,832 2,732
Interests purchased in the secondary market (fair value) 911 929
Special Purpose Entities [Member] | Significant Observable Inputs (Level 2) [Member] | Non-Investment Grade [Member]
   
Retained interests (fair value) 120 241
Interests purchased in the secondary market (fair value) 255 255
Special Purpose Entities [Member] | Significant Unobservable Inputs (Level 3) [Member]
   
Retained interests (fair value) 1,653 2,395
Interests purchased in the secondary market (fair value) 187 24
Derivative assets (fair value) 514 221
Derivative liabilities (fair value) 38 63
Special Purpose Entities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Investment Grade [Member]
   
Retained interests (fair value) 7 22
Interests purchased in the secondary market (fair value) 8 8
Special Purpose Entities [Member] | Significant Unobservable Inputs (Level 3) [Member] | Non-Investment Grade [Member]
   
Retained interests (fair value) 1,646 2,373
Interests purchased in the secondary market (fair value) 179 16
Special Purpose Entities [Member] | Balance [Member]
   
Retained interests (fair value) 3,605 5,368
Interests purchased in the secondary market (fair value) 1,353 1,208
Derivative assets (fair value) 1,329 1,108
Derivative liabilities (fair value) 312 423
Special Purpose Entities [Member] | Balance [Member] | Investment Grade [Member]
   
Retained interests (fair value) 1,839 2,754
Interests purchased in the secondary market (fair value) 919 937
Special Purpose Entities [Member] | Balance [Member] | Non-Investment Grade [Member]
   
Retained interests (fair value) 1,766 2,614
Interests purchased in the secondary market (fair value) $ 434 $ 271