Quarterly report pursuant to Section 13 or 15(d)

Securitizations and Other Variable Interest Entities - First Lien Mortgages (Details)

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Securitizations and Other Variable Interest Entities - First Lien Mortgages (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
In Text Details [Abstract]          
Fair value of securities connection with agency first lien residential mortgage securitizations $ 1,000,000 $ 91,000,000 $ 22,000,000 $ 546,000,000  
Commercial Mortgage Backed Securities [Member]
          
In Text Details [Abstract]          
Servicing Advance 177,000,000   177,000,000   152,000,000
Consumer Mortgage [Member]
          
In Text Details [Abstract]          
Servicing Fee And Ancillary Fee Income 1,100,000,000 1,400,000,000 3,600,000,000 4,500,000,000  
Servicing Advance 23,700,000,000   23,700,000,000   26,000,000,000
First Lien Mortgages [Member]
          
Table Details [Abstract]          
Gain on Sale of Mortgage Loans 563,000,000 636,000,000 1,300,000,000 2,500,000,000  
In Text Details [Abstract]          
Loans repurchased from investors and securitization trusts 2,500,000,000 447,000,000 5,200,000,000 8,100,000,000  
First Lien Mortgages [Member] | Agency Securities [Member]
          
Securitizations Related Information [Abstract]          
Cash proceeds from new securitizations 12,461,000,000 [1] 31,481,000,000 [1] 27,688,000,000 [1] 128,457,000,000 [1]  
Loss on securitizations, net of hedges (89,000,000) [2] (281,000,000) [2] (151,000,000) [2] (336,000,000) [2]  
First Lien Mortgages [Member] | Alt-A Loan [Member]
          
Securitizations Related Information [Abstract]          
Cash proceeds from new securitizations 0 [1] 36,000,000 [1] 0 [1] 36,000,000 [1]  
Loss on securitizations, net of hedges 0 [2] 0 [2] 0 [2] 0 [2]  
First Lien Mortgages [Member] | Commercial Mortgage Backed Securities [Member]
          
Securitizations Related Information [Abstract]          
Cash proceeds from new securitizations 335,000,000 [1] 1,667,000,000 [1] 660,000,000 [1] 3,468,000,000 [1]  
Loss on securitizations, net of hedges $ 0 [2] $ 0 [2] $ 0 [2] $ 0 [2]  
[1] The Corporation sells residential mortgage loans to GSEs in the normal course of business and receives MBS in exchange which may then be sold into the market to third-party investors for cash proceeds.
[2] Substantially all of the first-lien residential mortgage loans securitized are initially classified as LHFS and accounted for under the fair value option. As such, gains are recognized on these LHFS prior to securitization. During the three and nine months ended September 30, 2012, the Corporation recognized $563 million and $1.3 billion of gains on these LHFS compared to $636 million and $2.5 billion for the same periods in 2011, net of hedges.