| Name | StatementEquityComponentsAxis |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrldt:dimensionItem |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
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| Information by component of equity. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | Improvements-Credit Losses; Long-duration Insurance; SEC Simplification; Share-Based Consideration to Customer; Tax Simplification | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2020 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2019-12 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedReferences | true | http://fasb.org/srt/role/changeNote/changeNote |
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| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 250 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 10 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 7 | http://www.xbrl.org/2003/role/disclosureRef |
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| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
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| Paragraph | 1 | http://www.xbrl.org/2003/role/disclosureRef |
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| Paragraph | 15 | http://www.xbrl.org/2003/role/disclosureRef |
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| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 830 | http://www.xbrl.org/2003/role/disclosureRef |
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| Section | 45 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 20 | http://www.xbrl.org/2003/role/disclosureRef |
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| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 250 | http://www.xbrl.org/2003/role/disclosureRef |
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| Paragraph | 15 | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (e) | http://www.xbrl.org/2003/role/disclosureRef |
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| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 210 | http://fasb.org/us-gaap/role/ref/legacyRef |
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| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:ImpactOfRestatementOnOpeningRetainedEarningsNetOfTax | dep-concept-deprecatedConcept | http://fasb.org/us-gaap/role/deprecated/deprecated | |
us-gaap:EquityComponentDomain | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp061 | |
us-gaap:EquityComponentDomain | dimension-default | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp061NewAccountingPronouncementsOrChangeInAccountingPrincipleTable | |
us-gaap:EquityComponentDomain | dimension-domain | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp061NewAccountingPronouncementsOrChangeInAccountingPrincipleTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:NewAccountingPronouncementsOrChangeInAccountingPrincipleTable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp061 | |
us-gaap:NewAccountingPronouncementsOrChangeInAccountingPrincipleTable | hypercube-dimension | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsuranceLongDurationContractsTmp061NewAccountingPronouncementsOrChangeInAccountingPrincipleTable |