| Name | IndexedAnnuityMember |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | nonnum:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Indexed Annuity [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Contract providing interest payment that varies according to index. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| PublishDate | 2019-01 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Source | Taxonomy Implementation Guide | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| SourceName | Insurance-Long-Duration Contracts | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| pdfURI | https://www.fasb.org/insurancelongduration_2020 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| 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 |
| Publisher | FASB | http://www.xbrl.org/2003/role/exampleRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/exampleRef |
| Topic | 944 | http://www.xbrl.org/2003/role/exampleRef |
| SubTopic | 40 | http://www.xbrl.org/2003/role/exampleRef |
| Section | 55 | http://www.xbrl.org/2003/role/exampleRef |
| Paragraph | 29G | http://www.xbrl.org/2003/role/exampleRef |
| URI | http://asc.fasb.org/extlink&oid=121639165&loc=SL117819547-158441 | http://www.xbrl.org/2003/role/exampleRef |
| Name | Relation Type | Role | |
|---|---|---|---|
srt:ProductsAndServicesDomain | domain-member | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists | |
srt:ProductsAndServicesDomain | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp041 | |
srt:ProductsAndServicesDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp041MarketRiskBenefitTable | |
srt:ProductsAndServicesDomain | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp042 | |
srt:ProductsAndServicesDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp042MarketRiskBenefitTable |