Annual report pursuant to Section 13 and 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Additional Information (Details)

v3.3.1.900
Representations and Warranties Obligations and Corporate Guarantees - Additional Information (Details) - USD ($)
 1 Months Ended 12 Months Ended
Feb. 24, 2016
Dec. 31, 2015
Dec. 31, 2014
Loss Contingencies [Line Items]      
New purchase claims   $ 3,700,000,000  
Individual loan file reviews on repurchase claims   2,900,000,000  
Claims resolved   8,100,000,000  
Claims deemed resolved   7,400,000,000  
Maximum estimated range of possible loss   2,400,000,000.0  
Loan repurchases and indemnification payments   229,000,000 $ 496,000,000
Loss in period   128,000,000 334,000,000
Unpaid principal balance   587,000,000 857,000,000
Private-label securitization trustees, whole-loan investors, including third-party securitization sponsors and other      
Loss Contingencies [Line Items]      
Notional amount of unresolved repurchase claims   16,748,000,000 21,276,000,000
Monolines      
Loss Contingencies [Line Items]      
Notional amount of unresolved repurchase claims   $ 1,599,000,000 1,511,000,000
Monolines | Minimum      
Loss Contingencies [Line Items]      
Timetable to reach a settlement once a breach of representations and warranties is confirmed   60 days  
Monolines | Maximum      
Loss Contingencies [Line Items]      
Timetable to reach a settlement once a breach of representations and warranties is confirmed   90 days  
GSEs      
Loss Contingencies [Line Items]      
Notional amount of unresolved repurchase claims   $ 17,000,000 59,000,000
Sponsors of Third-Party Securitizations      
Loss Contingencies [Line Items]      
Notional amount of unresolved repurchase claims   1,400,000,000 2,000,000,000
Mortgage Loans Originated 2009 and Prior | GSEs      
Loss Contingencies [Line Items]      
Unresolved repurchase claims notional amount   14,000,000  
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   16,700,000,000 21,200,000,000
Unresolved repurchase claims, net of duplicate claims, in which statute of limitations has expired   7,400,000,000 5,200,000,000
Mortgage Loans Originated between 2004 and 2008 | Private-Label Securitization Trustees      
Loss Contingencies [Line Items]      
Claims related to loans in specific private-label securitization groups   3,500,000,000 $ 3,500,000,000
Representations and Warranties Exposure      
Loss Contingencies [Line Items]      
Maximum estimated range of possible loss   $ 2,000,000,000  
Subsequent Event | Bank of New York Mellon, As Trustee Settlement      
Loss Contingencies [Line Items]      
Settlement payment $ 8,500,000,000