Aggregate Of Estimated Potential Recoveries

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- Definition

Amount Of Repurchase Request Resolved Related To Ineligible Loans

+ Details

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- Definition

Amount of Contract Claims on Ineligible Mortgage

+ Details

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- Definition

Current Risk Free Rate Associated With Underlying Transaction, Range, Maximum

+ Details

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- Definition

Current Risk Free Rate Associated With Underlying Transaction, Range, Minimum

+ Details

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- Definition

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts after income taxes.

+ Details

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- Definition

Carrying amount as of the balance sheet date of paid insurance policy claims and LAE expense expected to be recovered.

+ Details

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- Definition

The fair value of financial instruments that represent the right of the Trust against the seller/servicer for loans that were not compliant with the representations and warranties of the loan underwriting. The Trust has the right to demand that the transferor replace ineligible loans with a compliant loan or repurchase the non-compliant loan.

+ Details

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- Definition

Loss And Loss Adjustment Expense Reserves [Line Items]

+ Details

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- Definition

Percentage Of Ineligible Mortgage Loan Recoveries Of Statutory Capital

+ Details

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- Definition

Percentage Of Ineligible Mortgage Loans

+ Details

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- Definition

Percentage Of Recognized Estimated Recoveries In Relationship To Consolidated Total Shareholders Equity

+ Details

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- Definition

Settlement Received For Assured Guaranty Put Back Claims

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- Definition

Sum Of Probabilities Assigned To All Scenarios

+ Details

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- Definition

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 6.I)

-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 109

-Paragraph 47

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

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- Definition

Carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Loss And Loss Adjustment Expense Reserves (RMBS Recoveries) (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Second-Lien RMBS [Member]	Sep. 30, 2011 First And Second Lien RMBS [Member]	Sep. 30, 2011 RMBS [Member]	Sep. 30, 2011 RMBS And HELOC And CES [Member]	Sep. 30, 2010 RMBS And HELOC And CES [Member]
Loss And Loss Adjustment Expense Reserves [Line Items]
Estimated insurance recoveries			$ 2,800,000,000
Insurance loss recoverable			1,900,000,000
Loan repurchase commitments			938,000,000
Federal statutory rate	35.00%
Estimated insurance recoveries, after income taxes	1,800,000,000	1,600,000,000
Percentage of recognized estimated recoveries in relationship to consolidated total shareholder's equity	78.00%	58.00%
Percentage of ineligible mortgage loan recoveries of statutory capital	69.00%	59.00%
Percentage of ineligible mortgage loans				80.00%
Contract claims on ineligible mortgages	4,600,000,000
Sum of probabilities assigned to all scenarios					100.00%
Current risk-free rate associated with underlying transaction, range, minimum						0.75%
Current risk-free rate associated with underlying transaction, range, maximum							2.06%
Aggregate of estimated potential recoveries	2,800,000,000
Settlement received for assured guaranty put-back claims	1,100,000,000
Bank of America repurchase requests resolved		$ 8,000,000,000