| Name | LongTermContractForPurchaseOfElectricPowerLineItems |
|---|---|
| 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 |
|---|---|---|---|
| Long-term Contract for Purchase of Electric Power [Line Items] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:LongTermContractForPurchaseOfElectricPowerDescription | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractForPurchaseOfElectricPowerShareOfPlantOutputBeingPurchased | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractForPurchaseOfElectricPowerEstimatedAnnualCost | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractForPurchaseOfElectricPowerAnnualMinimumDebtServicePaymentRequired | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractForPurchaseOfElectricPowerAmountOfLongTermDebtOrLeaseObligationOutstanding | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractForPurchaseOfElectricPowerInterestIncludedInContractCharges | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations | |
us-gaap:LongTermContractsForPurchaseOfElectricPowerTable | all | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerDescription | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerDateOfContractExpiration | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerShareOfPlantOutputBeingPurchased | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerEstimatedAnnualCost | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerAnnualMinimumDebtServicePaymentRequired | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerAmountOfLongTermDebtOrLeaseObligationOutstanding | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable | |
us-gaap:LongTermContractForPurchaseOfElectricPowerInterestIncludedInContractCharges | domain-member | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsLongTermContractsForPurchaseOfElectricPowerTable |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:LongTermContractsForPurchaseOfElectricPowerTable | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations |