| Name | FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollectedAbstract |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Financial Guarantee Insurance Contracts, Premium Receivable, Premium Expected to be Collected [Abstract] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| elementCreationTaxonomyVersion | 2009 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDateAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanFourAndWithinFiveYearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, after Year 5 Through 10 us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanFiveAndWithin10YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan10AndWithin15YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan20AndWithin25YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan25AndWithin30YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan30AndWithin35YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan35AndWithin40YearsFromBalanceSheetDate | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedWithinOneYearFromBalanceSheetDateAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanOneAndWithinTwoYearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanTwoAndWithinThreeYearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanThreeAndWithinFourYearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanFourAndWithinFiveYearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
Financial Guarantee Insurance Contract, Premium Receivable, to be Collected, after Year 5 Through 10 us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThanFiveAndWithin10YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan10AndWithin15YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan15AndWithin20YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan20AndWithin25YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan25AndWithin30YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan30AndWithin35YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumExpectedToBeCollectedMoreThan35AndWithin40YearsFromBalanceSheetDate | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumReceivablePremiumExpectedToBeCollected | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable |