Quarterly report pursuant to Section 13 or 15(d)

Representations and Warranties Obligations and Corporate Guarantees (Details)

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Representations and Warranties Obligations and Corporate Guarantees (Details) (USD $)
3 Months Ended 3 Months Ended
Mar. 31, 2013
RescissionNotices
Mar. 31, 2012
Dec. 31, 2012
RescissionNotices
Mar. 31, 2013
Other Non Government Sponsored Entites [Member]
Mar. 31, 2013
Implicated by Ongoing Litigation [Member]
RescissionNotices
Mar. 31, 2013
Minimum [Member]
Mar. 31, 2013
Maximum [Member]
Jun. 28, 2011
First Mortgage [Member]
Bank Of New York Mellon As Trustee [Member]
trust
Jun. 28, 2011
Second Mortgage [Member]
Bank Of New York Mellon As Trustee [Member]
trust
Guarantor Obligations [Line Items]                  
Percentage of loans underlying outstanding repurchase demands 17.00%   26.00%            
Number Of Trusts Involved In Settlement Agreement               525 5
Number of Open Mortgage Insurance Rescission Notices 109,000   110,000   50,000        
Percent of Mortgage Insurance Recission Notes Received Which Are Resolved 35.00%                
Cash Paid for Repurchases $ 508,000,000 $ 423,000,000              
Unpaid Principal Balance 564,000,000 532,000,000              
Loss 127,000,000 264,000,000              
Provision 250,000,000 282,000,000              
Representations Warranties And Guarantees Maximum Exposure Above Existing Accruals 4,000,000,000                
Outstanding Claims For Representations And Warranties Unpaid Principal Balance       13,300,000,000          
Repurchase Demands under Review       $ 900,000,000          
Percentage of loans resolved through repurchase or make whole payments 15.00%                
Private Label Securitization Trust Related Repurchase Claims 42.00%                
Timeframe To Resolve Repurchase Claims In Dispute           90 days 120 days    
Timetable to reach a settlement once a breach of representations and warranties is confirmed           60 days 90 days