Annual report pursuant to Section 13 and 15(d)

Representations and Warranties Obligations and Corporate Guarantees - Loan Repurchases (Details)

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Representations and Warranties Obligations and Corporate Guarantees - Loan Repurchases (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]
New Purchase Claims 22,400,000,000  
Outstanding Claims, From Mortgage Insurance Recission Notices 2,300,000,000 1,200,000,000
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
First Lien Mortgages [Member]
   
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 2,015,000,000 6,042,000,000
Cash Paid for Repurchases 1,698,000,000 5,093,000,000
Loss 814,000,000 3,372,000,000
Home Equity Line of Credit [Member]
   
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 60,000,000 127,000,000
Cash Paid for Repurchases 57,000,000 127,000,000
Loss 33,000,000 113,000,000
Obligation to Repurchase Receivables Sold [Member]
   
Guarantor Obligations [Line Items]    
Loss 847,000,000 3,485,000,000
Obligation to Repurchase Receivables Sold [Member] | First Lien Mortgages [Member]
   
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 1,184,000,000 2,713,000,000
Cash Paid for Repurchases 1,273,000,000 3,067,000,000
Loss 389,000,000 1,346,000,000
Obligation to Repurchase Receivables Sold [Member] | Home Equity Line of Credit [Member]
   
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 24,000,000 28,000,000
Cash Paid for Repurchases 24,000,000 28,000,000
Loss 0 14,000,000
Indemnification Agreement [Member]
   
Guarantor Obligations [Line Items]    
Cash Paid for Repurchases 1,755,000,000 5,220,000,000
Indemnification Agreement [Member] | First Lien Mortgages [Member]
   
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 831,000,000 3,329,000,000
Cash Paid for Repurchases 425,000,000 2,026,000,000
Loss 425,000,000 2,026,000,000
Indemnification Agreement [Member] | Home Equity Line of Credit [Member]
   
Guarantor Obligations [Line Items]    
Unpaid Principal Balance 36,000,000 99,000,000
Cash Paid for Repurchases 33,000,000 99,000,000
Loss 33,000,000 99,000,000
Monoline [Member]
   
Guarantor Obligations [Line Items]    
New Purchase Claims 295,000,000  
Outstanding Claims For Representations And Warranties Unpaid Principal Balance 2,400,000,000 3,100,000,000
Whole loan sale, private-label securitizations and other [Member]
   
Guarantor Obligations [Line Items]    
Repurchase Demands Received Excluded from Outstanding Claims 1,300,000,000  
United States Government Agencies And Sponsored Enterprises Debt Securities [Member]
   
Guarantor Obligations [Line Items]    
Outstanding Claims By Counterparty 13,530,000,000 [1],[2],[3] 6,221,000,000 [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]
[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.