| Name | DefinedBenefitPlanEquitySecuritiesMember |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
| Prefix | us-gaap |
| Data type | dtr-types:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Defined Benefit Plan, Equity Securities [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Security representing ownership in corporation or other legal entity for which ownership is represented by share of stock, in which defined benefit plan asset is invested. Includes, but is not limited to, common stock, preferred stock, convertible security, stock right and stock warrant. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| PublishDate | 2018-01 | http://fasb.org/us-gaap/role/tin/resource |
| Source | Taxonomy Implementation Guide | http://fasb.org/us-gaap/role/tin/resource |
| SourceName | Retirement Benefits-Phase 2 | http://fasb.org/us-gaap/role/tin/resource |
| pdfURI | https://www.fasb.org/retirementbenefitsphase2_2020 | http://fasb.org/us-gaap/role/tin/resource |
| elementCreationTaxonomyVersion | 2018 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Publisher | FASB | http://www.xbrl.org/2003/role/exampleRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/exampleRef |
| Topic | 715 | http://www.xbrl.org/2003/role/exampleRef |
| SubTopic | 20 | http://www.xbrl.org/2003/role/exampleRef |
| Section | 50 | http://www.xbrl.org/2003/role/exampleRef |
| Paragraph | 1 | http://www.xbrl.org/2003/role/exampleRef |
| Subparagraph | (d)(ii) | http://www.xbrl.org/2003/role/exampleRef |
| URI | http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 | http://www.xbrl.org/2003/role/exampleRef |
| Publisher | FASB | http://www.xbrl.org/2003/role/exampleRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/exampleRef |
| Topic | 715 | http://www.xbrl.org/2003/role/exampleRef |
| SubTopic | 20 | http://www.xbrl.org/2003/role/exampleRef |
| Section | 55 | http://www.xbrl.org/2003/role/exampleRef |
| Paragraph | 17 | http://www.xbrl.org/2003/role/exampleRef |
| URI | http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 | http://www.xbrl.org/2003/role/exampleRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:PlanAssetCategoriesDomain | parent-child | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits | |
us-gaap:PlanAssetCategoriesDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsDefinedBenefitPlanPlanAssetsAllocationTable | |
us-gaap:PlanAssetCategoriesDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsDefinedBenefitPlanPlanAssetsCategoryTable | |
us-gaap:PlanAssetCategoriesDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsDefinedBenefitPlanPlanAssetsLevel3ReconciliationTable | |
us-gaap:PlanAssetCategoriesDomain | domain-member | http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfDefinedBenefitPlansDisclosuresTable |