Quarterly report pursuant to Section 13 or 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Private-label Securitization and Whole-loan Sales Experience (Details)

v3.5.0.2
Representations and Warranties Obligations and Corporate Guarantees - Private-label Securitization and Whole-loan Sales Experience (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Loss Contingencies [Line Items]    
Inactive claims, threshold period of inactivity after denial 6 months  
Private-label securitization trustees, whole-loan investors, including third-party securitization sponsors and other    
Loss Contingencies [Line Items]    
Notional amount of unresolved repurchase claims $ 16,720 $ 16,748
Mortgage Loans Originated between 2004 and 2008 | Private-label securitization trustees, whole-loan investors, including third-party securitization sponsors and other    
Loss Contingencies [Line Items]    
Notional amount of unresolved repurchase claims 16,700 16,700
Mortgage Loans Originated between 2004 and 2008 | Private-Label Securitization Trustees    
Loss Contingencies [Line Items]    
Amount in which corporation owns substantially all outstanding bonds in the tranche $ 3,500 $ 3,500