Quarterly report pursuant to Section 13 or 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 $)
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2013
RescissionNotices
Jun. 30, 2012
Jun. 30, 2013
RescissionNotices
Jun. 30, 2012
Dec. 31, 2012
RescissionNotices
Jun. 30, 2013
Prime loans [Member]
Dec. 31, 2012
Prime loans [Member]
Jun. 30, 2013
Alt [Member]
Dec. 31, 2012
Alt [Member]
Jun. 30, 2013
Home Equity [Member]
Dec. 31, 2012
Home Equity [Member]
Jun. 30, 2013
Pay option [Member]
Dec. 31, 2012
Pay option [Member]
Jun. 30, 2013
Subprime [Member]
Dec. 31, 2012
Subprime [Member]
Jun. 30, 2013
Other Product Type [Member]
Dec. 31, 2012
Other Product Type [Member]
Jun. 30, 2013
Government Sponsored Entities [Member]
Dec. 31, 2012
Government Sponsored Entities [Member]
Jun. 30, 2013
Monoline [Member]
Dec. 31, 2012
Monoline [Member]
Jun. 30, 2013
Whole loan sale, private-label securitizations and other [Member]
Dec. 31, 2012
Whole loan sale, private-label securitizations and other [Member]
Jun. 30, 2013
Government Sponsored Entities [Member]
Jun. 30, 2013
Government Sponsored Entities [Member]
Jun. 30, 2013
Whole loan sale, private-label securitizations and other [Member]
Jun. 30, 2013
Monoline [Member]
Jun. 30, 2013
Monoline [Member]
Jun. 30, 2013
Other Non Government Sponsored Entites [Member]
Jun. 30, 2013
Other Non Government Sponsored Entites [Member]
Jun. 30, 2013
Whole-Loan Investors [Member]
Jun. 30, 2013
Whole-Loan Investors [Member]
Jun. 30, 2013
Maximum [Member]
Jun. 30, 2013
Minimum [Member]
Jan. 06, 2013
Federal National Mortgage Association FNMA [Member]
Jun. 30, 2013
First Lien Mortgages Serviced for Others [Member]
RescissionNotices
Jun. 30, 2013
Loans held for investment [Member]
RescissionNotices
Jun. 30, 2013
Implicated by Ongoing Litigation [Member]
RescissionNotices
Jan. 31, 2013
Federal National Mortgage Association FNMA [Member]
Jun. 30, 2013
Federal National Mortgage Association FNMA [Member]
First Lien Mortgages Serviced for Others [Member]
RescissionNotices
Jun. 30, 2013
Prior to 2009 [Member]
Government Sponsored Entities [Member]
Jun. 30, 2013
After 2008 [Member]
Government Sponsored Entities [Member]
Guarantor Obligations [Line Items]                                                                                    
Unpaid Principal Balance Of Loan Guarantees Satisfied $ 284,000,000 $ 723,000,000 $ 848,000,000 $ 1,255,000,000                                                                            
Loss On Loan Guarantees 171,000,000 145,000,000 298,000,000 409,000,000                                                                            
Payments For Loan Guarantees 250,000,000 591,000,000 758,000,000 1,014,000,000                                                                            
Payments for Legal Settlements 1,600,000,000 56,000,000 1,700,000,000 131,000,000                                                                     3,600,000,000      
Timeframe To Resolve Repurchase Claims In Dispute                                                                 120 days 90 days                
Outstanding Claims By Counterparty 16,648,000,000 [1],[2]   16,648,000,000 [1],[2]   28,278,000,000 [1],[2]                         1,120,000,000 [1],[2] 13,530,000,000 [1],[2] 1,542,000,000 [1],[2] 2,449,000,000 [1],[2] 13,986,000,000 [1],[2] 12,299,000,000 [1],[2]                                      
Timetable to reach a settlement once a breach of representations and warranties is confirmed                                                                 90 days 60 days                
Outstanding Claims By Product Type 16,648,000,000 [1],[2]   16,648,000,000 [1],[2]   28,278,000,000 [1],[2] 1,421,000,000 [1],[2] 8,793,000,000 [1],[2] 1,120,000,000 [1],[2] 5,428,000,000 [1],[2] 1,598,000,000 [1],[2] 2,394,000,000 [1],[2] 5,584,000,000 [1],[2] 5,884,000,000 [1],[2] 5,317,000,000 [1],[2] 3,687,000,000 [1],[2] 1,608,000,000 [1],[2] 2,092,000,000 [1],[2]                                                  
Outstanding Claims, From Mortgage Insurance Recission Notices 466,000,000   466,000,000   2,300,000,000                                                           1,900,000,000              
Repurchase Demands under Review                                                         545,000,000 545,000,000                     221,000,000 0
New Purchase Claims 1,300,000,000   3,100,000,000                                         529,000,000 927,000,000   2,000,000 44,000,000 666,000,000 1,900,000,000 134,000,000 268,000,000                    
Amount of Loan Repurchase Claims Resolved 1,700,000,000   14,700,000,000                                                                              
Amount of Loan Repurchase Claims Resolved Through Rescission 436,000,000   845,000,000                                                                              
Amount of Loan Repurchase Claims Resolved Through Repurchase and Make Whole Payments 364,000,000   675,000,000                                                                              
Outstanding Claims For Representations And Warranties Unpaid Principal Balance                                                         13,900,000,000 13,900,000,000                     945,000,000 175,000,000
Repurchase Demands Excluded from Outstanding Claims 1,500,000,000   1,500,000,000   1,600,000,000                                               13,400,000,000 13,400,000,000                     724,000,000 145,000,000
Repurchase Demands Received Excluded from Outstanding Claims     $ 300,000,000                                             $ 1,300,000,000                                
Number of Open Mortgage Insurance Rescission Notices 106,000   106,000   110,000                                                             45,000 10,000 51,000   25,000    
[1] At June 30, 2013 and December 31, 2012, unresolved repurchase claims did not include repurchase demands of $1.5 billion and $1.6 billion where the Corporation believes the claimants have not satisfied the contractual thresholds as discussed on page 205.
[2] Excludes certain MI rescission notices. However, at June 30, 2013 and December 31, 2012, included $466 million and $2.3 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.