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Representations and Warranties Obligations and Corporate Guarantees (Details) (USD $)
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12 Months Ended | 4 Months Ended | 8 Months Ended | 12 Months Ended | 60 Months Ended | 0 Months Ended | 12 Months Ended | |||||||||||||||||||||||||
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Dec. 31, 2011
RescissionNotices
Payment
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Dec. 31, 2010
RescissionNotices
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Dec. 31, 2011
Minimum [Member]
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Dec. 31, 2011
Maximum [Member]
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Dec. 31, 2011
Bank Of New York Mellon As Trustee [Member]
Group
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Aug. 31, 2011
Bank Of New York Mellon As Trustee [Member]
Group
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Dec. 31, 2011
Bank Of New York Mellon As Trustee [Member]
Trust
Investor
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Dec. 31, 2008
Bank Of New York Mellon As Trustee [Member]
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Jun. 28, 2011
Bank Of New York Mellon As Trustee [Member]
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Apr. 14, 2011
Assured Guaranty [Member]
Trust
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Dec. 31, 2011
Assured Guaranty [Member]
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Dec. 31, 2011
Government sponsored enterprise obligations [Member]
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Dec. 31, 2010
Government sponsored enterprise obligations [Member]
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Dec. 31, 2011
Other Non Government Sponsored Entites [Member]
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Dec. 31, 2011
Monoline [Member]
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Dec. 31, 2011
Government sponsored enterprise obligations [Member]
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Dec. 31, 2011
Pending or Threatened Litigation [Member]
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Dec. 31, 2011
Indemnification Agreement [Member]
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Dec. 31, 2010
Indemnification Agreement [Member]
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Dec. 31, 2011
Unpaid Principal Balance Of Loan Guarantees Satisfied [Member]
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Dec. 31, 2010
Unpaid Principal Balance Of Loan Guarantees Satisfied [Member]
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Jun. 28, 2011
Second Mortgage [Member]
Bank Of New York Mellon As Trustee [Member]
Trust
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Apr. 14, 2011
Second Mortgage [Member]
Assured Guaranty [Member]
Trust
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Jun. 28, 2011
First Mortgage [Member]
Bank Of New York Mellon As Trustee [Member]
Trust
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Apr. 14, 2011
First Mortgage [Member]
Assured Guaranty [Member]
Trust
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Dec. 31, 2011
Resolved Through Acceptance [Member]
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Dec. 31, 2011
Resolved Through Reinstatement of Coverage or Payment of Claim [Member]
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Dec. 31, 2011
Resolved Through Settlement, Policy Commutation or Similar Arrangement [Member]
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Dec. 31, 2011
Implicated by Ongoing Litigation [Member]
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Dec. 31, 2011
In Process of Review [Member]
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Dec. 31, 2011
Reviewed and Being Contested [Member]
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Dec. 31, 2011
Subject of Ongoing Litigation [Member]
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| Guarantor Obligations [Line Items] | ||||||||||||||||||||||||||||||||
| Period of Defaulted Loans Leading to an Increase in Claims | 18 months | |||||||||||||||||||||||||||||||
| Number of Payments Made By Borrower | 25 | |||||||||||||||||||||||||||||||
| Percentage of loans underlying outstanding repurchase demands | 28.00% | 25.00% | ||||||||||||||||||||||||||||||
| Number Of Trusts Involved In Settlement Agreement | 29 | 5 | 8 | 525 | 21 | |||||||||||||||||||||||||||
| Original Principal Balance Of Loans Originated | $ 424,000,000,000 | $ 35,800,000,000 | ||||||||||||||||||||||||||||||
| Original Principal Balance of Loans Originated During Period | 409,000,000,000 | |||||||||||||||||||||||||||||||
| Principal Amount Outstanding On Loans Securitized In Default | 220,000,000,000 | |||||||||||||||||||||||||||||||
| Principal Amount Outstanding On Loans Securitized In Default During Period | 217,000,000,000 | |||||||||||||||||||||||||||||||
| Number Of Institutional Investors Involved In Settlement Agreement | 22 | |||||||||||||||||||||||||||||||
| Outstanding Claims, From Mortgage Insurance Recission Notices | 1,200,000,000 | 935,000,000 | ||||||||||||||||||||||||||||||
| Settlement Payment | 8,500,000,000 | 1,100,000,000 | ||||||||||||||||||||||||||||||
| Estimated Litigation Liability | 100,000,000 | 100,000,000 | ||||||||||||||||||||||||||||||
| Private Placements From Which Plaintiffs Purchased Mortgage Backed Securities Issued By Country Wide Financial Corporation Related Entities | 6 | |||||||||||||||||||||||||||||||
| Number of Groups With Opportunity to Dispute Legal Settlement | 44 | |||||||||||||||||||||||||||||||
| Number of Groups With Opportunity to Dispute Legal Settlement, Who Have Withdrawn From Proceedings | 2 | |||||||||||||||||||||||||||||||
| Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement | 20,200,000,000 | |||||||||||||||||||||||||||||||
| Loan Loss Insurance Value Of Reinsurance Arrangement | 470,000,000 | |||||||||||||||||||||||||||||||
| Payment for Litigation Settlement | 1,000,000,000 | |||||||||||||||||||||||||||||||
| Loss Contingency Accrual, at Carrying Value | 476,000,000 | 700,000,000 | 57,000,000 | |||||||||||||||||||||||||||||
| Gain (Loss) Related to Litigation Settlement | 1,600,000,000 | |||||||||||||||||||||||||||||||
| Loans and Leases Receivable, Gross, Consumer, Lease Financing | 2,200,000,000 | |||||||||||||||||||||||||||||||
| Agreement Reached To Resolve Repurchase Claims For Residential Mortgage Loans Sold To Gses Related To Legacy Subsidiary Entities | 2,800,000,000 | |||||||||||||||||||||||||||||||
| Loss On Repurchase Or Reimbursement Of Repurchase Claims For First Lien Mortgages And Home Equity Loans From The Investor Or Securitization Trust | 1,700,000,000 | 1,700,000,000 | ||||||||||||||||||||||||||||||
| New Purchase Claims | 17,500,000,000 | 14,300,000,000 | 3,200,000,000 | |||||||||||||||||||||||||||||
| Amount of Loan Repurchase Claims Resolved | 14,100,000,000 | |||||||||||||||||||||||||||||||
| Amount of Loan Repurchase Claims Resolved Through Rescission | 7,500,000,000 | |||||||||||||||||||||||||||||||
| Amount of Loan Repurchase Claims Resolved Through Repurchase and Make Whole Payments | 6,600,000,000 | |||||||||||||||||||||||||||||||
| Number of Open Mortgage Insurance Rescission Notices | 90,000 | 72,000 | ||||||||||||||||||||||||||||||
| Percent of Mortgage Insurance Recission Notes Received Which Are Resolved | 26.00% | 24.00% | 46.00% | 30.00% | ||||||||||||||||||||||||||||
| Percent of Mortgage Insurance Recission Notes Received Which Are Not Yet Resolved | 74.00% | 48.00% | 11.00% | 89.00% | 29.00% | |||||||||||||||||||||||||||
| Cash Paid for Repurchases | 5,220,000,000 | 5,204,000,000 | ||||||||||||||||||||||||||||||
| Unpaid Principal Balance | 6,169,000,000 | 6,569,000,000 | ||||||||||||||||||||||||||||||
| Payments for Legal Settlements | 1,000,000,000 | |||||||||||||||||||||||||||||||
| Provision | 15,591,000,000 | 6,785,000,000 | 7,000,000,000 | 8,600,000,000 | ||||||||||||||||||||||||||||
| Representations Warranties And Guarantees Maximum Exposure Above Existing Accruals | 5,000,000,000 | |||||||||||||||||||||||||||||||
| Percentage of the voting rights of outstanding securities required to investigate loans files and demand repurchase of loans | 25.00% | |||||||||||||||||||||||||||||||
| Percentage Of Claims That Corporation Initially Denied That Have Been Subsequently Resolved | 30.00% | |||||||||||||||||||||||||||||||
| Percentage Of Claim Resolved Through Repurchase | 10.00% | |||||||||||||||||||||||||||||||
| Percentage Of Claim Resolved Through Rescission | 1.00% | |||||||||||||||||||||||||||||||
| Outstanding Claims For Representations And Warranties Unpaid Principal Balance | 3,100,000,000 | |||||||||||||||||||||||||||||||
| Unpaid principal balance of loans without repurchase requests | 6,100,000,000 | |||||||||||||||||||||||||||||||
| Percentage of loans resolved through repurchase or make whole payments | 25.00% | |||||||||||||||||||||||||||||||
| Private Label Securitization Trust Related Repurchase Claims | 50.00% | |||||||||||||||||||||||||||||||
| Private Label Securitization Trust Related Repurchase Claims | $ 2,100,000,000 | |||||||||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||||||||