| Name | AdditionalLiabilityLongDurationInsuranceRollForward |
|---|---|
| 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 |
|---|---|---|---|
| Additional Liability, Long-Duration Insurance [Roll Forward] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | Long-duration Insurance | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2019 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2018-08 | http://fasb.org/srt/role/changeNote/changeNote |
| NewElement | true | http://fasb.org/srt/role/changeNote/changeNote |
| Source_ASU_Number | 2018-12 | http://fasb.org/srt/role/changeNote/changeNote |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:AdditionalLiabilityLongDurationInsuranceOriginalDiscountRateBeforeCashFlowAndReinsurance | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceCumulativeIncreaseDecreaseFromCashFlowChange | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceCumulativeIncreaseDecreaseOfActualVarianceFromExpectedExperience | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceOriginalDiscountRateBeforeReinsuranceAfterCashFlowChange | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsurancePeriodIncreaseDecreaseAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceOriginalDiscountRateBeforeReinsuranceAfterCashFlowChange | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceIncreaseDecreaseFromDiscountRateChange | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceBeforeReinsuranceAfterDiscountRateChange | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceReinsuranceRecoverableAfterAllowance | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceAfterReinsurance | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceOriginalDiscountRateBeforeCashFlowAndReinsurance | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceCumulativeIncreaseDecreaseFromCashFlowChange | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceCumulativeIncreaseDecreaseOfActualVarianceFromExpectedExperience | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceOriginalDiscountRateBeforeReinsuranceAfterCashFlowChange | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsurancePeriodIncreaseDecreaseAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceIncreaseDecreaseFromDiscountRateChange | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceBeforeReinsuranceAfterDiscountRateChange | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceReinsuranceRecoverableAfterAllowance | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable | |
us-gaap:AdditionalLiabilityLongDurationInsuranceAfterReinsurance | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:AdditionalLiabilityLongDurationInsuranceLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceA | |
us-gaap:AdditionalLiabilityLongDurationInsuranceLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceAAdditionalLiabilityLongDurationInsuranceActivityTable |