| Name | FinancialGuaranteeInsuranceContractsPremiumReceivedOverContractPeriodUnearnedPremiumRevenue |
|---|---|
| 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 Contracts, Premium Received over Contract Period, Unearned Premium Revenue | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Amount of unearned premium revenue in the statement of financial position for financial guarantee insurance contracts where the premium is received over the contract period. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| 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 | 310 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 50 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 3 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Subparagraph | (a)(2) | http://fasb.org/us-gaap/role/ref/legacyRef |
| URI | http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290 | http://fasb.org/us-gaap/role/ref/legacyRef |
| 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 |