Annual report pursuant to Section 13 and 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Outstanding Claims (Details)

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Representations and Warranties Obligations and Corporate Guarantees - Outstanding Claims (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Guarantor Obligations [Line Items]    
Outstanding Claims By Counterparty $ 28,278,000,000 [1],[2],[3] $ 12,607,000,000 [1],[2]
Outstanding Claims By Product Type 28,278,000,000 [1],[2],[3] 12,607,000,000 [1],[2]
Table Details [Abstract]    
Loss On Repurchase Or Reimbursement Of Repurchase Claims For First Lien Mortgages And Home Equity Loans From The Investor Or Securitization Trust 1,600,000,000 1,700,000,000
GSEs [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Counterparty 13,530,000,000 [1],[2],[3] 6,221,000,000 [1],[2]
Monoline [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Counterparty 2,449,000,000 [1],[2] 3,082,000,000 [1],[2]
Whole loan sale, private-label securitizations and other [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Counterparty 12,299,000,000 [1],[2] 3,304,000,000 [1],[2]
Prime loans [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Product Type 8,793,000,000 [1],[2] 3,925,000,000 [1],[2]
Alt [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Product Type 5,428,000,000 [1],[2] 2,286,000,000 [1],[2]
Home Equity [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Product Type 2,394,000,000 [1],[2] 2,872,000,000 [1],[2]
Pay option [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Product Type 5,884,000,000 [1],[2] 1,993,000,000 [1],[2]
Subprime [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Product Type 3,687,000,000 [1],[2] 891,000,000 [1],[2]
Other Product Type [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Product Type 2,092,000,000 [1],[2] 640,000,000 [1],[2]
Whole loan sale, private-label securitizations and other [Member]
   
Table Details [Abstract]    
Repurchase Demands Received Excluded from Outstanding Claims $ 1,400,000,000  
[1] At December 31, 2012 and 2011, unresolved repurchase claims did not include repurchase demands of $1.6 billion and $1.7 billion where the Corporation believes the claimants have not satisfied the contractual thresholds as noted on page 215.
[2] Excludes certain MI rescission notices. However, at December 31, 2012 and 2011, included $2.3 billion and $1.2 billion of repurchase requests received from the GSEs that have resulted solely from MI rescission notices. For additional information, see Mortgage Insurance Rescission Notices in this Note.
[3] As a result of the FNMA Settlement, $12.2 billion of these claims were resolved in January 2013.