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| <link:definition> 1023 - Disclosure - Variable Interest Entities (Tables) </link:definition> |
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| <link:definition> 1024 - Disclosure - Loss and Loss Adjustment Expense Reserves (Tables) </link:definition> |
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| <link:definition> 1044 - Disclosure - Fair Value Of Financial Instruments (Company's Assets And Liabilities Measured At Fair Value On Recurring Basis) (Detail) </link:definition> |
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| <link:definition> 1045 - Disclosure - Fair Value Of Financial Instruments (Fair Value Hierarchy Table Presents The Company's Assets And Liabilities At Fair Value Not Recorded On The Company's Consolidated Balance Sheet) (Detail) </link:definition> |
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| <link:definition> 1047 - Disclosure - Fair Value Of Financial Instruments (Realized And Unrealized Gains And Losses Included In Earnings Pertaining To Level 3 Assets And Liabilities) (Detail) </link:definition> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/FairValueOfFinancialInstrumentsAggregateFairValueAndRemainingContractualPrincipalBalanceOutstandingOnFairValueOptionDetail" id="FairValueOfFinancialInstrumentsAggregateFairValueAndRemainingContractualPrincipalBalanceOutstandingOnFairValueOptionDetail"> |
| <link:definition> 1049 - Disclosure - Fair Value Of Financial Instruments (Aggregate Fair Value And Remaining Contractual Principal Balance Outstanding On Fair Value Option) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsNarrativeDetail" id="InvestmentsNarrativeDetail"> |
| <link:definition> 1050 - Disclosure - Investments (Narrative) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsAmortizedCostAndFairValueOfAvailableForSaleAndHeldToMaturityInvestmentPortfoliosDetail" id="InvestmentsAmortizedCostAndFairValueOfAvailableForSaleAndHeldToMaturityInvestmentPortfoliosDetail"> |
| <link:definition> 1051 - Disclosure - Investments (Amortized Cost And Fair Value Of Available-For-Sale and Held-To-Maturity Investment Portfolios) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsDistributionByContractualMaturityOfAvailableForSaleAndHeldToMaturityInvestmentsDetail" id="InvestmentsDistributionByContractualMaturityOfAvailableForSaleAndHeldToMaturityInvestmentsDetail"> |
| <link:definition> 1052 - Disclosure - Investments (Distribution By Contractual Maturity Of Available-For-Sale and Held-To-Maturity Investments) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsGrossUnrealizedLossesRelatedToAvailableForSaleAndHeldToMaturityInvestmentsDetail" id="InvestmentsGrossUnrealizedLossesRelatedToAvailableForSaleAndHeldToMaturityInvestmentsDetail"> |
| <link:definition> 1053 - Disclosure - Investments (Gross Unrealized Losses Related To Available-For-Sale And Held-To-Maturity Investments) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsDistributionOfSecuritiesByPercentageOfFairValueBelowBookValueByMoreThan5ForAContinuousTwelveMonthPeriodOrLongerDetail" id="InvestmentsDistributionOfSecuritiesByPercentageOfFairValueBelowBookValueByMoreThan5ForAContinuousTwelveMonthPeriodOrLongerDetail"> |
| <link:definition> 1054 - Disclosure - Investments (Distribution Of Securities By Percentage Of Fair Value Below Book Value By More Than 5% For A Continuous Twelve Month Period Or Longer) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsSecuritiesHeldInUnrealizedLossPositionAndInsuredByFinancialGuarantorDetail" id="InvestmentsSecuritiesHeldInUnrealizedLossPositionAndInsuredByFinancialGuarantorDetail"> |
| <link:definition> 1055 - Disclosure - Investments (Securities Held In Unrealized Loss Position And Insured By Financial Guarantor) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsSummaryOfAllowanceForCreditLossesOnHtmInvestmentsDetail" id="InvestmentsSummaryOfAllowanceForCreditLossesOnHtmInvestmentsDetail"> |
| <link:definition> 1056 - Disclosure - Investments - (Summary of Allowance for Credit Losses on HTM Investments) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsCreditLossesRecognizedInEarningsRelatedToOttiLossesRecognizedInAccumulatedOtherComprehensiveIncomeLossDetail" id="InvestmentsCreditLossesRecognizedInEarningsRelatedToOttiLossesRecognizedInAccumulatedOtherComprehensiveIncomeLossDetail"> |
| <link:definition> 1057 - Disclosure - Investments (Credit Losses Recognized In Earnings Related To OTTI Losses Recognized In Accumulated Other Comprehensive Income (Loss)) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsNetRealizedGainsLossesFromSalesOfAvailableForSaleSecuritiesDetail" id="InvestmentsNetRealizedGainsLossesFromSalesOfAvailableForSaleSecuritiesDetail"> |
| <link:definition> 1058 - Disclosure - Investments (Net Realized Gains (Losses) From Sales Of Available-For-Sale Securities) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/InvestmentsPortionOfUnrealizedGainsAndLossesOnEquityInvestmentsHeldDetail" id="InvestmentsPortionOfUnrealizedGainsAndLossesOnEquityInvestmentsHeldDetail"> |
| <link:definition> 1059 - Disclosure - Investments (Portion Of Unrealized Gains And Losses On Equity Investments Held) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/DerivativeInstrumentsNarrativeDetail" id="DerivativeInstrumentsNarrativeDetail"> |
| <link:definition> 1060 - Disclosure - Derivative Instruments (Narrative) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/DerivativeInstrumentsCreditDerivativesSoldDetail" id="DerivativeInstrumentsCreditDerivativesSoldDetail"> |
| <link:definition> 1061 - Disclosure - Derivative Instruments (Credit Derivatives Sold) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/DerivativeInstrumentsTotalFairValueOfCompanysDerivativeAssetsAndLiabilitiesByInstrumentAndBalanceSheetLocationBeforeCounterpartyNettingDetail" id="DerivativeInstrumentsTotalFairValueOfCompanysDerivativeAssetsAndLiabilitiesByInstrumentAndBalanceSheetLocationBeforeCounterpartyNettingDetail"> |
| <link:definition> 1062 - Disclosure - Derivative Instruments (Total Fair Value Of Company's Derivative Assets And Liabilities By Instrument And Balance Sheet Location, Before Counterparty Netting) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/DerivativeInstrumentsEffectOfDerivativeInstrumentsOnConsolidatedStatementsOfOperationsDetail" id="DerivativeInstrumentsEffectOfDerivativeInstrumentsOnConsolidatedStatementsOfOperationsDetail"> |
| <link:definition> 1063 - Disclosure - Derivative Instruments (Effect Of Derivative Instruments On Consolidated Statements Of Operations) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/IncomeTaxesNarrativeDetail" id="IncomeTaxesNarrativeDetail"> |
| <link:definition> 1064 - Disclosure - Income Taxes (Narrative) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/IncomeTaxesIncomeTaxesAndRelatedEffectiveTaxRatesDetail" id="IncomeTaxesIncomeTaxesAndRelatedEffectiveTaxRatesDetail"> |
| <link:definition> 1065 - Disclosure - Income Taxes (Income Taxes And Related Effective Tax Rates) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
| </link:roleType> |
| | | <link:roleType roleURI="http://www.mbia.com/role/BusinessSegmentsNarrativeDetail" id="BusinessSegmentsNarrativeDetail"> |
| <link:definition> 1066 - Disclosure - Business Segments (Narrative) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/BusinessSegmentsSummaryOfCompanysSegmentResultsDetail" id="BusinessSegmentsSummaryOfCompanysSegmentResultsDetail"> |
| <link:definition> 1067 - Disclosure - Business Segments (Summary Of Company's Segment Results) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/EarningsPerShareNarrativeDetail" id="EarningsPerShareNarrativeDetail"> |
| <link:definition> 1068 - Disclosure - Earnings Per Share (Narrative) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/EarningsPerShareComputationOfBasicAndDilutedEarningsPerShareDetail" id="EarningsPerShareComputationOfBasicAndDilutedEarningsPerShareDetail"> |
| <link:definition> 1069 - Disclosure - Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/AccumulatedOtherComprehensiveIncomeChangesInTheComponentsOfAociDetail" id="AccumulatedOtherComprehensiveIncomeChangesInTheComponentsOfAociDetail"> |
| <link:definition> 1070 - Disclosure - Accumulated Other Comprehensive Income (Changes In The Components Of AOCI) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/AccumulatedOtherComprehensiveIncomeDetailsOfTheReclassificationFromAociDetail" id="AccumulatedOtherComprehensiveIncomeDetailsOfTheReclassificationFromAociDetail"> |
| <link:definition> 1071 - Disclosure - Accumulated Other Comprehensive Income (Details Of The Reclassification From AOCI) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/CommitmentsAndContingenciesNarrativeDetail" id="CommitmentsAndContingenciesNarrativeDetail"> |
| <link:definition> 1072 - Disclosure - Commitments and Contingencies (Narrative) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:roleType roleURI="http://www.mbia.com/role/CommitmentsAndContingenciesLeaseDisclosuresDetail" id="CommitmentsAndContingenciesLeaseDisclosuresDetail"> |
| <link:definition> 1073 - Disclosure - Commitments and Contingencies (Lease Disclosures) (Detail) </link:definition> |
| <link:usedOn> link:presentationLink </link:usedOn> |
| <link:usedOn> link:definitionLink </link:usedOn> |
| <link:usedOn> link:calculationLink </link:usedOn> |
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| | | <link:linkbaseRef xlink:type="simple" xlink:href="mbi-20200331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/> |
| | | <link:linkbaseRef xlink:type="simple" xlink:href="mbi-20200331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/> |
| | | <link:linkbaseRef xlink:type="simple" xlink:href="mbi-20200331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/> |
| | | <link:linkbaseRef xlink:type="simple" xlink:href="mbi-20200331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"/> |
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| <import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/> |
| <import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/> |
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| <import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd"/> |
| <import namespace="http://xbrl.sec.gov/currency/2019-01-31" schemaLocation="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd"/> |
| <import namespace="http://xbrl.sec.gov/exch/2019-01-31" schemaLocation="https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd"/> |
| <import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd"/> |
| <import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd"/> |
| <import namespace="http://xbrl.sec.gov/stpr/2018-01-31" schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd"/> |
| <import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/> |
| <import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd"/> |
| <import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd"/> |
| <import namespace="http://xbrl.sec.gov/dei/2019-01-31" schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd"/> |
| <import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/> |
| <import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/> |
| <import namespace="http://fasb.org/us-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd"/> |
| <import namespace="http://fasb.org/srt/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd"/> |
| <import namespace="http://fasb.org/srt-types/2019-01-31" schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd"/> |
| <element name="InsuranceLossRecoverable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_InsuranceLossRecoverable" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="LoanRepurchaseCommitments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_LoanRepurchaseCommitments" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="InvestmentsPledgedAsCollateralAmortizedCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_InvestmentsPledgedAsCollateralAmortizedCost" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="ShortTermInvestmentsAmortizedCost" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_ShortTermInvestmentsAmortizedCost" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="AccumulatedOtherComprehensiveIncomeLossDeferredIncomeTaxes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_AccumulatedOtherComprehensiveIncomeLossDeferredIncomeTaxes" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="NetGainsLossesOnFinancialInstrumentsAtFairValueAndForeignExchange" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_NetGainsLossesOnFinancialInstrumentsAtFairValueAndForeignExchange" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="AociAvailableForSaleSecuritiesWithAllowanceForCreditLossAdjustmentsForGainsLossesIncludedInNetIncomeLoss" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_AociAvailableForSaleSecuritiesWithAllowanceForCreditLossAdjustmentsForGainsLossesIncludedInNetIncomeLoss" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="AociAvailableforsaleSecuritiesWithAllowanceForCreditLossUnrealizedGainlossBeforeTax" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_AociAvailableforsaleSecuritiesWithAllowanceForCreditLossUnrealizedGainlossBeforeTax" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="EffectOfNewAccountingPrinciple" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_EffectOfNewAccountingPrinciple" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="ProceedsFromReinsuranceAndRecoveries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ProceedsFromReinsuranceAndRecoveries" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="ProceedsFromConsolidationOfVariableInterestEntity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ProceedsFromConsolidationOfVariableInterestEntity" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="ReconciliationOfNetIncomeLossToNetCashProvidedUsedByOperatingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ReconciliationOfNetIncomeLossToNetCashProvidedUsedByOperatingActivitiesAbstract" substitutionGroup="xbrli:item"/> |
| <element name="ChangeInAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ChangeInAbstract" substitutionGroup="xbrli:item"/> |
| <element name="IncreaseDecreaseInInsuranceLossRecoverable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_IncreaseDecreaseInInsuranceLossRecoverable" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="NetOtherThanTemporaryImpairments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_NetOtherThanTemporaryImpairments" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="IncreaseDecreaseInNetGainsLossesOnFinancialInstrumentsAtFairValueAndForeignExchange" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_IncreaseDecreaseInNetGainsLossesOnFinancialInstrumentsAtFairValueAndForeignExchange" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="IncreaseDecreaseInOtherNetRealizedGainsLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_IncreaseDecreaseInOtherNetRealizedGainsLosses" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="ScheduleOfSummaryOfNonConsolidatedViesAssetsAndLiabilitiesTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ScheduleOfSummaryOfNonConsolidatedViesAssetsAndLiabilitiesTableTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="ScheduleOfLossAndLossAdjustmentExpenseReserveTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ScheduleOfLossAndLossAdjustmentExpenseReserveTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="ScheduleOfInsuranceLossRecoverableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ScheduleOfInsuranceLossRecoverableTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="ScheduleOfInsuranceLossReservesAndRecoverablesForInsuredObligationsTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ScheduleOfInsuranceLossReservesAndRecoverablesForInsuredObligationsTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="DifferenceBetweenAggregateFairValueAndAggregateRemainingContractualPrincipalForLoansAndLongTermDebtForWhichFairValueOptionHasBeenElectedTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_DifferenceBetweenAggregateFairValueAndAggregateRemainingContractualPrincipalForLoansAndLongTermDebtForWhichFairValueOptionHasBeenElectedTableTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="InvestmentsDistributionOfSecuritiesByPercentageOfFairValueBelowBookValueByMoreThanFivePercentTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_InvestmentsDistributionOfSecuritiesByPercentageOfFairValueBelowBookValueByMoreThanFivePercentTableTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="SecuritiesHeldInUnrealizedLossPositionAndInsuredByFinancialGuarantorAndRelatedInsuranceLossReserveOnCompanyInsuredInvestmentsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_SecuritiesHeldInUnrealizedLossPositionAndInsuredByFinancialGuarantorAndRelatedInsuranceLossReserveOnCompanyInsuredInvestmentsTableTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="ScheduleOfBasicAndDilutedEarningsPerShareTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ScheduleOfBasicAndDilutedEarningsPerShareTableTextBlock" substitutionGroup="xbrli:item"/> |
| <element name="ClaimPayments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ClaimPayments" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="OutstandingBonds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_OutstandingBonds" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="FederalLegislationPassedToCombatTheEconomicImpact" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_FederalLegislationPassedToCombatTheEconomicImpact" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="ReliefFundApprovedByCongressAndPresident" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_ReliefFundApprovedByCongressAndPresident" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="IncomeTaxAllocationAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_IncomeTaxAllocationAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="IncomeTaxAllocationDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_IncomeTaxAllocationDomain" substitutionGroup="xbrli:item"/> |
| <element name="AccountingStandardsUpdate201912Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_AccountingStandardsUpdate201912Member" substitutionGroup="xbrli:item"/> |
| <element name="NumberOfVariableInterestEntitiesDeconsolidated" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_NumberOfVariableInterestEntitiesDeconsolidated" substitutionGroup="xbrli:item"/> |
| <element name="NumberOfVariableInterestEntitiesConsolidated" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_NumberOfVariableInterestEntitiesConsolidated" substitutionGroup="xbrli:item"/> |
| <element name="USPublicFinanceInsuranceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_USPublicFinanceInsuranceMember" substitutionGroup="xbrli:item"/> |
| <element name="StructuredFinanceAndInternationalInsuranceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_StructuredFinanceAndInternationalInsuranceMember" substitutionGroup="xbrli:item"/> |
| <element name="InsuranceLossRecoverableMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InsuranceLossRecoverableMember" substitutionGroup="xbrli:item"/> |
| <element name="UnearnedPremiumRevenueMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_UnearnedPremiumRevenueMember" substitutionGroup="xbrli:item"/> |
| <element name="LossAndLossAdjustmentExpenseReservesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LossAndLossAdjustmentExpenseReservesMember" substitutionGroup="xbrli:item"/> |
| <element name="GlobalStructuredFinanceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GlobalStructuredFinanceMember" substitutionGroup="xbrli:item"/> |
| <element name="GlobalPublicFinanceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GlobalPublicFinanceMember" substitutionGroup="xbrli:item"/> |
| <element name="ConsumerAssetBackedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ConsumerAssetBackedMember" substitutionGroup="xbrli:item"/> |
| <element name="CorporateAssetBackedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CorporateAssetBackedMember" substitutionGroup="xbrli:item"/> |
| <element name="LossAndLossAdjustmentExpenseReservesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LossAndLossAdjustmentExpenseReservesTable" substitutionGroup="xbrldt:hypercubeItem"/> |
| <element name="ClaimLiabilityAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ClaimLiabilityAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="ClaimLiabilityDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ClaimLiabilityDomain" substitutionGroup="xbrli:item"/> |
| <element name="LaeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LaeMember" substitutionGroup="xbrli:item"/> |
| <element name="LossAndLossAdjustmentExpenseReservesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LossAndLossAdjustmentExpenseReservesLineItems" substitutionGroup="xbrli:item"/> |
| <element name="ChangesInLossAndLaeReserves" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ChangesInLossAndLaeReserves" substitutionGroup="xbrli:item"/> |
| <element name="LoanRepurchaseCommitmentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LoanRepurchaseCommitmentsMember" substitutionGroup="xbrli:item"/> |
| <element name="LossAndLaeReservesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LossAndLaeReservesMember" substitutionGroup="xbrli:item"/> |
| <element name="InternationalAndStructuredFinanceInsuranceMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InternationalAndStructuredFinanceInsuranceMember" substitutionGroup="xbrli:item"/> |
| <element name="ConsolidationAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ConsolidationAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="ConsolidationDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ConsolidationDomain" substitutionGroup="xbrli:item"/> |
| <element name="FinancialGuaranteeInsuranceContractsClaimLiabilitySignificantComponentsOfChangeOther" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_FinancialGuaranteeInsuranceContractsClaimLiabilitySignificantComponentsOfChangeOther" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="LossPaymentsForCases" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_LossPaymentsForCases" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="FinancialGuaranteeInsuranceContractsClaimLiabilitySignificantComponentsOfChangeInAssumptions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_FinancialGuaranteeInsuranceContractsClaimLiabilitySignificantComponentsOfChangeInAssumptions" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="RollForwardOfInsuranceLossRecoverableTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_RollForwardOfInsuranceLossRecoverableTable" substitutionGroup="xbrldt:hypercubeItem"/> |
| <element name="RollForwardOfInsuranceLossRecoverableLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_RollForwardOfInsuranceLossRecoverableLineItems" substitutionGroup="xbrli:item"/> |
| <element name="CollectionsForCases" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_CollectionsForCases" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesAccretionOfRecoveries" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesAccretionOfRecoveries" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesChangeInDiscountRate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesChangeInDiscountRate" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesChangeInAssumptions" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesChangeInAssumptions" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesOther" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_InsuranceLossRecoverableAndChangesInRecoveriesOfUnpaidLossesOther" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="SurveillanceCategoriesAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_SurveillanceCategoriesAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="SurveillanceCategoriesDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_SurveillanceCategoriesDomain" substitutionGroup="xbrli:item"/> |
| <element name="CautionListLowMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CautionListLowMember" substitutionGroup="xbrli:item"/> |
| <element name="CautionListMediumMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CautionListMediumMember" substitutionGroup="xbrli:item"/> |
| <element name="CautionListHighMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CautionListHighMember" substitutionGroup="xbrli:item"/> |
| <element name="ClassifiedListMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ClassifiedListMember" substitutionGroup="xbrli:item"/> |
| <element name="NumberOfPolicies" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_NumberOfPolicies" substitutionGroup="xbrli:item"/> |
| <element name="ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityRecoverable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityRecoverable" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="ApproximatePercentageOfLevel3AssetsAtFairValueInTotalAssetsMeasuredAtFairValue" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_ApproximatePercentageOfLevel3AssetsAtFairValueInTotalAssetsMeasuredAtFairValue" substitutionGroup="xbrli:item"/> |
| <element name="ApproximatePercentageOfLevel3LiabilitiesAtFairValueInTotalLiabilitiesMeasuredAtFairValue" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_ApproximatePercentageOfLevel3LiabilitiesAtFairValueInTotalLiabilitiesMeasuredAtFairValue" substitutionGroup="xbrli:item"/> |
| <element name="CreditDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CreditDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="OtherDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_OtherDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="VariableInterestEntityNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_VariableInterestEntityNotesMember" substitutionGroup="xbrli:item"/> |
| <element name="UnobservableInputAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_UnobservableInputAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="UnobservableInputDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_UnobservableInputDomain" substitutionGroup="xbrli:item"/> |
| <element name="CashFlowsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CashFlowsMember" substitutionGroup="xbrli:item"/> |
| <element name="RecoveryRatesAndBreachRatesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_RecoveryRatesAndBreachRatesMember" substitutionGroup="xbrli:item"/> |
| <element name="ImpactOfFinancialGuaranteeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ImpactOfFinancialGuaranteeMember" substitutionGroup="xbrli:item"/> |
| <element name="NonperformanceRiskMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_NonperformanceRiskMember" substitutionGroup="xbrli:item"/> |
| <element name="FairValueMeasurementRangePercentage" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueMeasurementRangePercentage" substitutionGroup="xbrli:item"/> |
| <element name="QuotedMarketPricesOfVieAssetsAdjustedForFinancialGuaranteesProvidedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_QuotedMarketPricesOfVieAssetsAdjustedForFinancialGuaranteesProvidedMember" substitutionGroup="xbrli:item"/> |
| <element name="MarketPricesAdjustedForFinancialGuaranteesProvidedToVieObligationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_MarketPricesAdjustedForFinancialGuaranteesProvidedToVieObligationsMember" substitutionGroup="xbrli:item"/> |
| <element name="DiscountedCashFlowMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DiscountedCashFlowMember" substitutionGroup="xbrli:item"/> |
| <element name="DirectPriceModelMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DirectPriceModelMember" substitutionGroup="xbrli:item"/> |
| <element name="OtherDerivativesLiabilitiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_OtherDerivativesLiabilitiesMember" substitutionGroup="xbrli:item"/> |
| <element name="InsuredDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InsuredDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="NonInsuredDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_NonInsuredDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="OtherFixedMaturityInvestmentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_OtherFixedMaturityInvestmentsMember" substitutionGroup="xbrli:item"/> |
| <element name="AssetsOfConsolidatedViesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_AssetsOfConsolidatedViesMember" substitutionGroup="xbrli:item"/> |
| <element name="DerivativeLiabilitiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DerivativeLiabilitiesMember" substitutionGroup="xbrli:item"/> |
| <element name="DerivativeAssetsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DerivativeAssetsMember" substitutionGroup="xbrli:item"/> |
| <element name="LiabilitiesOfConsolidatedViesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LiabilitiesOfConsolidatedViesMember" substitutionGroup="xbrli:item"/> |
| <element name="InvestmentNotesAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InvestmentNotesAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="InvestmentNotesDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InvestmentNotesDomain" substitutionGroup="xbrli:item"/> |
| <element name="CorporateObligationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CorporateObligationsMember" substitutionGroup="xbrli:item"/> |
| <element name="ResidentialMortgageBackedAgencyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ResidentialMortgageBackedAgencyMember" substitutionGroup="xbrli:item"/> |
| <element name="ResidentialMortgageBackedNonAgencyMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ResidentialMortgageBackedNonAgencyMember" substitutionGroup="xbrli:item"/> |
| <element name="OtherAssetBackedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_OtherAssetBackedMember" substitutionGroup="xbrli:item"/> |
| <element name="MoneyMarketSecuritiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_MoneyMarketSecuritiesMember" substitutionGroup="xbrli:item"/> |
| <element name="InterestRateDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InterestRateDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="PerpetualDebtAndEquitySecuritiesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_PerpetualDebtAndEquitySecuritiesMember" substitutionGroup="xbrli:item"/> |
| <element name="LoansReceivableAndOtherInstrumentsAtFairValueMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_LoansReceivableAndOtherInstrumentsAtFairValueMember" substitutionGroup="xbrli:item"/> |
| <element name="CurrencyDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CurrencyDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="OtherPayableMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_OtherPayableMember" substitutionGroup="xbrli:item"/> |
| <element name="GuaranteedInvestmentAgreementsFairValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_GuaranteedInvestmentAgreementsFairValue" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="FinancialGuaranteeGross" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FinancialGuaranteeGross" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="FinancialGuaranteeCeded" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FinancialGuaranteeCeded" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="DisclosedAtFairValueNotRecordedAtFairValueAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DisclosedAtFairValueNotRecordedAtFairValueAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="DisclosedAtFairValueNotRecordedAtFairValueDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DisclosedAtFairValueNotRecordedAtFairValueDomain" substitutionGroup="xbrli:item"/> |
| <element name="ValueDisclosedAtFairValueNotRecordedAtFairValueMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ValueDisclosedAtFairValueNotRecordedAtFairValueMember" substitutionGroup="xbrli:item"/> |
| <element name="CorporateObligationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CorporateObligationMember" substitutionGroup="xbrli:item"/> |
| <element name="FairValueByConsolidatedStatementsOfOperationsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_FairValueByConsolidatedStatementsOfOperationsAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="GainsAndLossesRealizedAndUnrealizedEarningsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GainsAndLossesRealizedAndUnrealizedEarningsDomain" substitutionGroup="xbrli:item"/> |
| <element name="ChangeInUnrealizedGainsLossesForPeriodIncludedInEarningsForAssetsAndLiabilitiesStillHeldMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ChangeInUnrealizedGainsLossesForPeriodIncludedInEarningsForAssetsAndLiabilitiesStillHeldMember" substitutionGroup="xbrli:item"/> |
| <element name="TotalGainsLossesIncludedInEarningsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_TotalGainsLossesIncludedInEarningsMember" substitutionGroup="xbrli:item"/> |
| <element name="FixedMaturitySecuritiesHeldAtFairValueVieMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_FixedMaturitySecuritiesHeldAtFairValueVieMember" substitutionGroup="xbrli:item"/> |
| <element name="InvestmentsCarriedAtFairValueMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InvestmentsCarriedAtFairValueMember" substitutionGroup="xbrli:item"/> |
| <element name="ResidentialMortgageLoansMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ResidentialMortgageLoansMember" substitutionGroup="xbrli:item"/> |
| <element name="FairValueOptionContractualOutstandingPrincipalLoansReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOptionContractualOutstandingPrincipalLoansReceivable" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="FairValueOptionContractualOutstandingPrincipalLoansReceivable90DaysOrMorePastDue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOptionContractualOutstandingPrincipalLoansReceivable90DaysOrMorePastDue" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="FairValueOptionAggregateFairValueLoansReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOptionAggregateFairValueLoansReceivable" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="FairValueOptionContractualOutstandingPrincipalLongTermDebtInstruments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOptionContractualOutstandingPrincipalLongTermDebtInstruments" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="FairValueOptionAggregateFairValueLongTermDebtInstruments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOptionAggregateFairValueLongTermDebtInstruments" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="TotalLoansReceivableAndOtherInstrumentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_TotalLoansReceivableAndOtherInstrumentsMember" substitutionGroup="xbrli:item"/> |
| <element name="FairValueOfSecuritiesOnDepositWithVariousRegulatoryAuthorities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOfSecuritiesOnDepositWithVariousRegulatoryAuthorities" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="InvestmentSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsForContinuousTwelveMonthPeriod" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_InvestmentSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsForContinuousTwelveMonthPeriod" substitutionGroup="xbrli:item"/> |
| <element name="PercentageOfSecuritiesBookValueExceededMarketValue" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_PercentageOfSecuritiesBookValueExceededMarketValue" substitutionGroup="xbrli:item"/> |
| <element name="WeightedAverageContractualMaturityPeriodOfSecuritiesUnrealizedLossPosition" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_WeightedAverageContractualMaturityPeriodOfSecuritiesUnrealizedLossPosition" substitutionGroup="xbrli:item"/> |
| <element name="FairValueBelowBookValueGreaterThanFivePercentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_FairValueBelowBookValueGreaterThanFivePercentMember" substitutionGroup="xbrli:item"/> |
| <element name="SecuritiesInUnrealizedLossPositionMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_SecuritiesInUnrealizedLossPositionMember" substitutionGroup="xbrli:item"/> |
| <element name="AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesTable" substitutionGroup="xbrldt:hypercubeItem"/> |
| <element name="AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesLineItems" substitutionGroup="xbrli:item"/> |
| <element name="AvailableForSaleCumulativeOtherThanTemporaryImpairmentOfSecurities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_AvailableForSaleCumulativeOtherThanTemporaryImpairmentOfSecurities" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="HeldToMaturityCumulativeOtherThanTemporaryImpairmentOfSecurities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_HeldToMaturityCumulativeOtherThanTemporaryImpairmentOfSecurities" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="HeldToMaturitySecuritiesGrossOfAllowanceForCreditLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_HeldToMaturitySecuritiesGrossOfAllowanceForCreditLosses" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="PercentageOfFairValueBelowBookValueMinimum" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_PercentageOfFairValueBelowBookValueMinimum" substitutionGroup="xbrli:item"/> |
| <element name="PercentageOfFairValueBelowBookValueMaximum" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_PercentageOfFairValueBelowBookValueMaximum" substitutionGroup="xbrli:item"/> |
| <element name="GreaterThanFiftyPercentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GreaterThanFiftyPercentMember" substitutionGroup="xbrli:item"/> |
| <element name="GreaterThanFivePercentToFifteenPercentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GreaterThanFivePercentToFifteenPercentMember" substitutionGroup="xbrli:item"/> |
| <element name="GreaterThanFifteenPercentToTwentyFivePercentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GreaterThanFifteenPercentToTwentyFivePercentMember" substitutionGroup="xbrli:item"/> |
| <element name="GreaterThanTwentyFivePercentToFiftyPercentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_GreaterThanTwentyFivePercentToFiftyPercentMember" substitutionGroup="xbrli:item"/> |
| <element name="UnrealizedLossPositionGreaterThanTwelveMonthsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_UnrealizedLossPositionGreaterThanTwelveMonthsMember" substitutionGroup="xbrli:item"/> |
| <element name="MbiaCorpAndNationalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_MbiaCorpAndNationalMember" substitutionGroup="xbrli:item"/> |
| <element name="AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="LiabilityForClaimsAndClaimsAdjustmentExpenseInsuredByFinancialGuarantor" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_LiabilityForClaimsAndClaimsAdjustmentExpenseInsuredByFinancialGuarantor" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="HeldMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_HeldMember" substitutionGroup="xbrli:item"/> |
| <element name="NumberOfCreditSupportAnnexes" type="xbrli:positiveIntegerItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_NumberOfCreditSupportAnnexes" substitutionGroup="xbrli:item"/> |
| <element name="FairValueOfCreditSupportAnnexes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_FairValueOfCreditSupportAnnexes" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="InsuranceOperationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InsuranceOperationsMember" substitutionGroup="xbrli:item"/> |
| <element name="CreditRatingBbbMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CreditRatingBbbMember" substitutionGroup="xbrli:item"/> |
| <element name="CreditRatingBelowInvestmentGradeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CreditRatingBelowInvestmentGradeMember" substitutionGroup="xbrli:item"/> |
| <element name="CreditRatingAaaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CreditRatingAaaMember" substitutionGroup="xbrli:item"/> |
| <element name="CreditRatingAaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CreditRatingAaMember" substitutionGroup="xbrli:item"/> |
| <element name="CreditRatingAMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CreditRatingAMember" substitutionGroup="xbrli:item"/> |
| <element name="InsuredSwapsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InsuredSwapsMember" substitutionGroup="xbrli:item"/> |
| <element name="WeightedAverageRemainingMaturityCreditDerivativesInYears" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_WeightedAverageRemainingMaturityCreditDerivativesInYears" substitutionGroup="xbrli:item"/> |
| <element name="InterestRateSwapsEmbeddedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_InterestRateSwapsEmbeddedMember" substitutionGroup="xbrli:item"/> |
| <element name="CurrencySwapsVieMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CurrencySwapsVieMember" substitutionGroup="xbrli:item"/> |
| <element name="AllOtherMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_AllOtherMember" substitutionGroup="xbrli:item"/> |
| <element name="DerivativeAssetsNotDesignatedAsHedgingInstrumentFairValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_DerivativeAssetsNotDesignatedAsHedgingInstrumentFairValue" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="DerivativeLiabilitiesNotDesignatedAsHedgingInstrumentFairValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_DerivativeLiabilitiesNotDesignatedAsHedgingInstrumentFairValue" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="OtherAssetsVieMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_OtherAssetsVieMember" substitutionGroup="xbrli:item"/> |
| <element name="DerivativeLiabilitiesVIEMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DerivativeLiabilitiesVIEMember" substitutionGroup="xbrli:item"/> |
| <element name="DerivativeInstrumentDetailsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DerivativeInstrumentDetailsAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="DerivativeInstrumentDetailsDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DerivativeInstrumentDetailsDomain" substitutionGroup="xbrli:item"/> |
| <element name="DerivativeInstrumentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DerivativeInstrumentMember" substitutionGroup="xbrli:item"/> |
| <element name="UnrealizedGainsLossesOnInsuredDerivativesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_UnrealizedGainsLossesOnInsuredDerivativesMember" substitutionGroup="xbrli:item"/> |
| <element name="ForeignExchangeAndOtherDerivativesFinancialInstrumentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_ForeignExchangeAndOtherDerivativesFinancialInstrumentsMember" substitutionGroup="xbrli:item"/> |
| <element name="NonVariableInterestEntitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_NonVariableInterestEntitiesLineItems" substitutionGroup="xbrli:item"/> |
| <element name="DisclosureIncomeTaxesIncomeTaxesAndRelatedEffectiveTaxRatesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DisclosureIncomeTaxesIncomeTaxesAndRelatedEffectiveTaxRatesAbstract" substitutionGroup="xbrli:item"/> |
| <element name="DisclosureBusinessSegmentsSummaryOfCompanysSegmentResultsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DisclosureBusinessSegmentsSummaryOfCompanysSegmentResultsAbstract" substitutionGroup="xbrli:item"/> |
| <element name="RevenuesOfConsolidatedVies" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_RevenuesOfConsolidatedVies" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="RevenueFromTransactionsWithOtherOperatingSegmentsOfSameEntity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_RevenueFromTransactionsWithOtherOperatingSegmentsOfSameEntity" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="ExpensesOfConsolidatedVies" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ExpensesOfConsolidatedVies" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="ExpenseFromTransactionsWithOtherOperatingSegmentsOfSameEntity" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_ExpenseFromTransactionsWithOtherOperatingSegmentsOfSameEntity" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="RevenueFromCustomers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_RevenueFromCustomers" substitutionGroup="xbrli:item" xbrli:balance="credit"/> |
| <element name="CorporateOperationsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CorporateOperationsMember" substitutionGroup="xbrli:item"/> |
| <element name="DisclosureEarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_DisclosureEarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareAbstract" substitutionGroup="xbrli:item"/> |
| <element name="AntidilutiveSharesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_AntidilutiveSharesAbstract" substitutionGroup="xbrli:item"/> |
| <element name="CommitmentsAndContingenciesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CommitmentsAndContingenciesTable" substitutionGroup="xbrldt:hypercubeItem"/> |
| <element name="CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_CommitmentsAndContingenciesLineItems" substitutionGroup="xbrli:item"/> |
| <element name="NumberOfOtherLawsuits" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" id="mbi_NumberOfOtherLawsuits" substitutionGroup="xbrli:item"/> |
| <element name="PrepaWorkingCapital" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="mbi_PrepaWorkingCapital" substitutionGroup="xbrli:item" xbrli:balance="debit"/> |
| <element name="PlanTypeAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_PlanTypeAxis" substitutionGroup="xbrldt:dimensionItem"/> |
| <element name="PlanTypeDomain" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_PlanTypeDomain" substitutionGroup="xbrli:item"/> |
| <element name="FuelLineLendersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="mbi_FuelLineLendersMember" substitutionGroup="xbrli:item"/> |
| </schema> |