v2.4.0.6
Variable Interest Entities and Securitization Activities (Fair Value of Assets and Liabilities) (Details) (Special Purpose Entities, USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Retained interests (fair value) $ 3,055 $ 2,884
Interests purchased in the secondary market (fair value) 736 882
Derivative assets (fair value) 1,144 1,441
Derivative liabilities (fair value) 420 571
Level 1
   
Retained interests (fair value)   0
Interests purchased in the secondary market (fair value) 0 0
Derivative assets (fair value) 0 0
Derivative liabilities (fair value) 0 0
Level 2
   
Retained interests (fair value) 1,580 1,260
Interests purchased in the secondary market (fair value) 717 764
Derivative assets (fair value) 656 869
Derivative liabilities (fair value) 395 541
Level 3
   
Retained interests (fair value) 1,475 1,624
Interests purchased in the secondary market (fair value) 19 118
Derivative assets (fair value) 488 572
Derivative liabilities (fair value) 25 30
Primary Lending Commitments - Investment Grade
   
Retained interests (fair value) 1,442 1,189
Interests purchased in the secondary market (fair value) 63 640
Primary Lending Commitments - Investment Grade | Level 1
   
Retained interests (fair value) 0 0
Interests purchased in the secondary market (fair value) 0 0
Primary Lending Commitments - Investment Grade | Level 2
   
Retained interests (fair value) 1,442 1,186
Interests purchased in the secondary market (fair value) 63 638
Primary Lending Commitments - Investment Grade | Level 3
   
Retained interests (fair value) 0 3
Interests purchased in the secondary market (fair value) 0 2
Primary Lending Commitments - Non-investment Grade
   
Retained interests (fair value) 1,613 1,695
Interests purchased in the secondary market (fair value) 673 242
Primary Lending Commitments - Non-investment Grade | Level 1
   
Retained interests (fair value)   0
Interests purchased in the secondary market (fair value) 0 0
Primary Lending Commitments - Non-investment Grade | Level 2
   
Retained interests (fair value) 138 74
Interests purchased in the secondary market (fair value) 654 126
Primary Lending Commitments - Non-investment Grade | Level 3
   
Retained interests (fair value) 1,475 1,621
Interests purchased in the secondary market (fair value) $ 19 $ 116