| Name | RegulatoryAssetsAndLiabilitiesOtherDisclosuresAbstract |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
| 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 |
|---|---|---|---|
| Regulatory Assets and Liabilities, Other Disclosures [Abstract] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:DescriptionOfRegulatoryAssetsAndLiabilities | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:DescriptionOfSpecificRegulatoryAssets | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:AmountOfImpairmentToCarryingAmountOfRegulatoryAssets | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:DescriptionOfRegulatoryCostsNotYetApproved | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:AmountOfRegulatoryCostsNotYetApproved | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:AmountOfEmbeddedRegulatoryAsset | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:AmountOfEmbeddedRegulatoryLiability | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:RemainingRecoveryPeriodOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided1 | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:RegulatoryAssetRecoveryAssessments | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:TypesOfNetRegulatoryAssetsEarningReturns | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:RegulatoryAssetsAndLiabilitiesDisclosureAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations |