Quarterly report pursuant to Section 13 or 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Unresolved Repurchase Claims (Details)

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Representations and Warranties Obligations and Corporate Guarantees - Unresolved Repurchase Claims (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Loss Contingencies [Line Items]    
Total unresolved repurchase claims by product type, net of duplicate claims $ 18,305 $ 18,364
Outstanding claims with review 11,900 11,900
Outstanding claims without review 4,800 4,800
New purchase claims 52  
Amount of loan repurchase claims resolved 111  
Unresolved repurchase claims, repurchase demands amount 1,400 1,400
Private-label securitization trustees, whole-loan investors, including third-party securitization sponsors and other    
Loss Contingencies [Line Items]    
Notional amount of unresolved repurchase claims 16,692 16,748
Monolines    
Loss Contingencies [Line Items]    
Notional amount of unresolved repurchase claims 1,596 1,599
GSEs    
Loss Contingencies [Line Items]    
Notional amount of unresolved repurchase claims 17 $ 17
GSEs | Mortgage Loans Originated 2009 and Prior    
Loss Contingencies [Line Items]    
Unresolved repurchase claims notional amount $ 13