| Name | FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedMoreThan15AndWithin20YearsFromBalanceSheetDate |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Financial Guarantee Insurance Contract, Premium Revenue to be Recognized, after Year 15 Through 20 | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Amount of premium revenue under financial guarantee insurance contract to be recognized in sixteenth through twentieth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | Taxonomy Technical Improvement | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2020 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2019-11 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedLabels | true | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedDocumentation | true | http://fasb.org/srt/role/changeNote/changeNote |
| PreviousDocumentation | Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the sixteenth through twentieth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | FASB | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 944 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 605 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 50 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 4 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Subparagraph | (b)(2) | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognized | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:FinancialGuaranteeInsuranceContractsFutureExpectedPremiumRevenueToBeRecognizedAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceFinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodTable |