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
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
In Text Details [Abstract]      
Fair value of securities connection with agency first lien residential mortgage securitizations $ 0 $ 0  
Commercial Mortgage Backed Securities [Member]
      
In Text Details [Abstract]      
Servicing Advance 171,000,000   186,000,000
Consumer Mortgage [Member]
      
In Text Details [Abstract]      
Servicing Fee And Ancillary Fee Income 900,000,000 1,300,000,000  
Servicing Advance 21,900,000,000   23,200,000,000
First Lien Mortgages [Member]
      
Table Details [Abstract]      
Gain on Sale of Mortgage Loans 613,000,000 319,000,000  
In Text Details [Abstract]      
Loans repurchased from investors and securitization trusts 3,200,000,000 195,000,000  
First Lien Mortgages [Member] | Agency Securities [Member]
      
Securitizations Related Information [Abstract]      
Cash proceeds from new securitizations 12,013,000,000 [1] 6,338,000,000 [1]  
Loss on securitizations, net of hedges 29,000,000 [2] (17,000,000) [2]  
First Lien Mortgages [Member] | Commercial Mortgage Backed Securities [Member]
      
Securitizations Related Information [Abstract]      
Cash proceeds from new securitizations 0 [1] 325,000,000 [1]  
Loss on securitizations, net of hedges $ 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. The Corporation recognized $613 million and $319 million of gains, net of hedges, on loans securitized during the three months ended March 31, 2013 and 2012.