| Name | ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationLineItems |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| 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 |
|---|---|---|---|
| Schedule of Insured Financial Obligations with Credit Deterioration [Line Items] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionClaimLiability | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionReinsuranceRecoverable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | all | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNumberOfContractsIssuedAndOutstanding | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:InsuredFinancialObligationsWithCreditDeteriorationRemainingWeightedAverageContractPeriod | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationInsuredContractualPaymentsOutstandingAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationNetClaimLiabilityAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionUnearnedPremiumRevenue | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionClaimLiability | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | |
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationStatementOfFinancialPositionReinsuranceRecoverable | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:ScheduleOfInsuredFinancialObligationsWithCreditDeteriorationTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |