POR


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostsAndExpenses

us-gaap:GeneralAndAdministrativeExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:LitigationSettlementExpense

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingIncomeLoss

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss

us-gaap:RegulatedAndUnregulatedOperatingRevenue

us-gaap:RegulatedOperatingRevenue

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

us-gaap:Revenues

us-gaap:UnregulatedOperatingRevenue

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:AmortizationOfIntangibleAssets

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableCurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent

us-gaap:LongTermDebt
us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:DebtInstrumentRedemptionPeriod

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

por:DecouplingMechanismDeferralsNet

por:NetGainOrLossRecognizedInStatementOfIncomeOffsetByRegulatoryAccounting

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContract

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContractsElectricity

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContractsNaturalGas

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:AssetRetirementObligationLiabilitiesIncurred
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:AssetRetirementObligationPeriodIncreaseDecrease
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:AssetRetirementObligationRevisionOfEstimate

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice

us-gaap:DeferredRevenueRevenueRecognized1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments

us-gaap:EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes

us-gaap:EffectiveIncomeTaxRateReconciliationTaxCredits

us-gaap:EnvironmentalRemediationExpense

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3

us-gaap:GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:GainOnDerivativeInstrumentsPretax

us-gaap:IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInMarginDepositsOutstanding

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:LossContingencyDamagesSoughtValue

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherCostOfOperatingRevenue

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions
us-gaap:StatementEquityComponents

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProceedsFromShortTermDebt

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity

us-gaap:RegulatedOperatingRevenueElectricNonNuclear
us-gaap:ProductOrService

us-gaap:RepaymentsOfShortTermDebt

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TradingGainsLosses

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations

us-gaap:UtilitiesOperatingExpensePurchasedPower

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

dei:EntityCommonStockSharesOutstanding

dei:EntityNumberOfEmployees

por:AmountAuthorizedToLevy

por:AssetRetirementObligationNonUtilityProperty

por:AssetRetirementObligationUtilityPlant

por:CollateralAggregateFairValue
us-gaap:DerivativeInstrumentRisk

por:CommodityContractAssetCurrentElectricity

por:CommodityContractAssetCurrentNaturalGas

por:CommodityContractAssetElectricity
us-gaap:FairValueByFairValueHierarchyLevel

por:CommodityContractAssetNaturalGas
us-gaap:FairValueByFairValueHierarchyLevel

por:CommodityContractAssetNoncurrentElectricity

por:CommodityContractAssetNoncurrentNaturalGas

por:CommodityContractLiabilitiesElectricity
us-gaap:FairValueByFairValueHierarchyLevel

por:CommodityContractLiabilitiesNaturalGas
us-gaap:FairValueByFairValueHierarchyLevel

por:CommodityContractLiabilityCurrentElectricity

por:CommodityContractLiabilityCurrentNaturalGas

por:CommodityContractLiabilityNoncurrentElectricity

por:CommodityContractLiabilityNoncurrentNaturalGas

por:ConcentrationOfRiskDerivativeInstrumentsAssets

por:ConcentrationOfRiskDerivativeInstrumentsLiabilities

por:CorporateDebtSecuritiesHeldInDecommissioningTrustAssets
us-gaap:FairValueByFairValueHierarchyLevel

por:CounterpartyA

por:CounterpartyB

por:CounterpartyC

por:CounterpartyD

por:CurrentDerivativeAssets

por:CurrentDerivativeLiabilities

por:DebtSecuritiesDomesticGovernment
us-gaap:FairValueByFairValueHierarchyLevel

por:DeferredTaxAssetsPriceRiskManagement

por:DeferredTaxAssetsTaxCreditsNetOfValuationAllowance

por:DerivativeAssetsTotal

por:DerivativeLiabilitiesTotal

por:DividendReinvestmentAndDirectStockPurchasePlanNumberOfAvailableShares

por:DomesticEquitySecurities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument
por:ElectricityPhysicalForwardPurchase
us-gaap:Range

por:EmployeeStockPurchasePlanNumberOfAvailableShares

por:EmployeeStockPurchasePlanSharesAuthorized

por:FairValueMoneyMarketFunds
us-gaap:FairValueByFairValueHierarchyLevel

por:FirstMortgageBondsMaximumRate

por:FirstMortgageBondsMinimumRate
us-gaap:FinancialInstrument
por:FnancialSwapsElectricity
us-gaap:Range

por:LesseeOperatingLeaseLeaseNotYetCommencedEstimatedPresentValueOfFutureLeasePayments

por:Letterofcreditfacility

por:LineOfCreditFacilityExpansionRequestPotentialMaximumBorrowingCapacity

por:MutualFundsDebt
us-gaap:FairValueByFairValueHierarchyLevel

por:MutualFundsEquity
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FinancialInstrument
por:NaturalGasFinancialSwaps
us-gaap:Range

por:NetLiabilitiesFromPriceRiskManagementActivitiesClassifiedAsLevel3

por:NoncurrentDerivativeLiabilities

por:NumberOfRetailCustomers

por:NumberOfUnionEmployees

por:NumberOfUnionEmployeesSubjectToAgreementA

por:NumberOfUnionEmployeesSubjectToAgreementB

por:OperatingLeaseLiabilityRelatedToPowerPurchaseAgreements

por:OtherCurrentLiabilitiesOther
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
por:PgePortionOfCapacity
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
por:PgeShareOfOutput

por:PublicUtilitiesPropertyPlantAndEquipmentGeneral

por:PublicUtilitiesPropertyPlantAndEquipmentIntangible

por:PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet
us-gaap:RegulatoryLiability
por:RegulatoryAssetsEarningRateOfReturnAtApprovedRate

por:RegulatoryAssetsFromPriceRiskManagementActivities
us-gaap:RegulatoryLiability
por:RemainingAmountsOfRegulatoryLiabilitesForWhichNoInterstAccruesDuringRecoveryPeriodIsProvided
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
por:RevenueBondsIssuedByPublicUtilityDistricts

por:ServiceAreaPopulation

por:TaxCreditCarryforwardFederal
us-gaap:FinancialInstrument
por:TotalCommodityContracts

por:TrojanDecommissioningActivities

por:VolumeRelatedToDerivativeInstrumentsAtBalanceSheetDateCommodityContractsNaturalGas

por:VolumeRelatedToDerivativeInstrumentsHeldAtBalanceSheetDateCommodityContractsElectricity

por:VolumeRelatedtoDerivativeInstrumentsHeldatBalanceSheetDateForeignCurrency

us-gaap:AccruedCappingClosurePostClosureAndEnvironmentalCostsNoncurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsHeldInTrustNoncurrent
us-gaap:RetirementPlanType

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashSurrenderValueFairValueDisclosure
por:Trust

us-gaap:CollateralAlreadyPostedAggregateFairValue
us-gaap:DerivativeInstrumentRisk

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DecommissioningFundInvestments

us-gaap:DecommissioningLiabilityNoncurrent

us-gaap:DecommissioningTrustAssetsAmount

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsRegulatoryAssetsAndLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:Range, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:RetirementPlanType

us-gaap:DepositAssets

us-gaap:DerivativeAssetsNoncurrent
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentsAndHedgesLiabilities

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesNoncurrent

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue
us-gaap:DerivativeInstrumentRisk

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EnergyRelatedInventory

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinancialInstrumentsOwnedAtFairValue
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FinancialInstrumentsOwnedCorporateDebtAtFairValue
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongtermPollutionControlBondCurrentAndNoncurrent

us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:MarginDepositAssets

us-gaap:MoneyMarketFundsAtCarryingValue

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitment
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitmentDueAfterFifthYear
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitmentDueInFifthYear
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitmentDueInFourthYear
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitmentDueInNextTwelveMonths
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitmentDueInSecondYear
us-gaap:DerivativeInstrumentRisk
us-gaap:OtherCommitmentDueInThirdYear

us-gaap:OtherInventorySupplies

us-gaap:OtherInvestments

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent
us-gaap:RetirementPlanType

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities

us-gaap:PrepaidExpenseCurrent

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDistribution

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentTransmission

us-gaap:RatioOfIndebtednessToNetCapital1

us-gaap:RecordedThirdPartyEnvironmentalRecoveriesAmount

us-gaap:RegulatoryAssets
us-gaap:RegulatoryAsset

us-gaap:RegulatoryAssetsCurrent
us-gaap:RegulatoryAsset

us-gaap:RegulatoryAssetsNoncurrent
us-gaap:RegulatoryAsset

us-gaap:RegulatoryLiabilities
us-gaap:RegulatoryLiability

us-gaap:RegulatoryLiabilityCurrent
us-gaap:RegulatoryLiability

us-gaap:RegulatoryLiabilityNoncurrent
us-gaap:RegulatoryLiability

us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided
us-gaap:RegulatoryAsset
us-gaap:RegulatoryLiability

us-gaap:SecuredDebt

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShortTermBorrowings
us-gaap:CreditFacility

us-gaap:ShortTermDebtWeightedAverageInterestRate

us-gaap:USGovernmentSecuritiesAtCarryingValue
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnbilledReceivablesCurrent
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears

Plots across concepts


IncomeStatement
Profit Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Operating Lease Right Of Use Asset
Liabilities
Dividends Payable Current And Noncurrent
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Earnings Per Share Diluted
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Payable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Issued
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Other Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:CommonStockValue ██▇▆▅▄▄▄▃▂▂▂▁▁1235.01233.01231.01226.01224.01220.01220.01217.01215.01212.01212.01209.01208.01206.0
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStockNANA89.537331NANANA89.387124NANANA89.267959NANANA
us-gaap:CommonStockSharesIssued ██████████▁███89.40172289.57674889.53733189.50978389.50695189.46452189.38712489.37197489.3715689.3563110.089.24465989.23820689.214119
us-gaap:CommonStockSharesAuthorized ██████████▁███160.0160.0160.0160.0160.0160.0160.0160.0160.0160.00.0160.0160.0160.0
us-gaap:PreferredStockSharesAuthorized ██████████▁███30.030.030.030.030.030.030.030.030.030.00.030.030.030.0
us-gaap:CommonStockSharesOutstanding ▂█▇▆▆▄▂▁89.40172289.57674889.53733189.50978389.50695189.46452189.38712489.371974NA89.3563110.089.24465989.23820689.214119
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█89.67289.703NA89.50989.62589.579NA89.59489.56189.309NA89.23989.215NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█89.55489.556NA89.50989.48989.429NA89.37289.35789.309NA89.23989.215NA
us-gaap:EarningsPerShareBasic 0.36NA0.5700000000000001-0.190.44NA0.68000000000000020.610.28NA0.55999999999999980.590.51NA
us-gaap:EarningsPerShareDiluted 0.36NA0.5700000000000001-0.190.43NA0.69000000000000020.610.28NA0.550.590.51NA
us-gaap:EarningsPerShareBasicAndDiluted NA1.07NANANA0.91NANANA0.82NA0.590.510.72
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▄█▅▁▄▇▆▅▄▇▅▅▅▆32.096.050.0-17.039.082.058.055.026.074.050.053.046.064.0
us-gaap:CostsAndExpenses ▅▅▅█▂▄▄▄▂▄▄▃▁▂476.0476.0475.0563.0398.0440.0451.0454.0403.0462.0449.0434.0369.0393.0
us-gaap:GeneralAndAdministrativeExpense ▇█▆▄▆▅▄▆▆▅▇▁▅▅79.086.075.063.074.071.067.074.078.071.083.049.070.069.0
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▅█▆▁▅█▆▆▄▇▅▆▆▆36.0105.056.0-44.044.099.068.061.028.084.043.062.052.072.0
us-gaap:IncomeTaxExpenseBenefit ▁█4.09.0NA-27.05.018.07.06.03.011.0-6.09.06.08.0
us-gaap:IncomeTaxesPaidNet NANANA4.0NANANA1.0NANANANANANA
us-gaap:InterestExpense ▄▆▆█▆▄▄▃▁▃▁▁▁▁33.034.034.035.034.033.033.032.031.032.031.031.031.031.0
us-gaap:InterestPaidNet █▂▇▁▇▁▇▁█▁█▁█▁45.016.043.014.044.012.043.013.047.013.045.014.045.013.0
us-gaap:LitigationSettlementExpense ▁█▁0.0115.00.0NANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▇▆█▇▇▁▄▅▃▅▁▃▄▄8.06.09.07.07.0-1.04.05.02.05.0-1.02.03.03.0
us-gaap:OperatingIncomeLoss ▅█▆▁▅█▆▆▄▇▅▆▆▆61.0133.081.0-16.071.0133.097.088.057.0111.075.091.080.0100.0
us-gaap:OtherNonoperatingIncomeExpense ▇▆█▇▇▁▅▇▄▆▁▄▅▄3.02.04.03.03.0-4.01.03.00.02.0-4.00.01.0-1.0
us-gaap:ProfitLoss ▄█▅▁▄▇▆▅▄▇▅▅▅▆32.096.052.0-17.039.081.061.055.025.073.049.053.046.064.0
us-gaap:RegulatedAndUnregulatedOperatingRevenue ▂▆▂▃▂▂▃▃▄█▃▁▃▁12.023.012.014.013.012.014.014.017.027.016.010.014.011.0
us-gaap:RegulatedOperatingRevenue ▅█▆▄▂▆▅▃▂▆▄▃▁▃484.0553.0512.0477.0429.0514.0489.0456.0427.0509.0468.0448.0411.0454.0
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax ▅█▆▆▂▆▅▅▂▆▄▄▁▃545.0612.0562.0556.0469.0564.0551.0538.0462.0570.0519.0525.0449.0495.0
us-gaap:Revenues ▅█▆▅▂▆▅▅▁▆▄▄▁▃537.0609.0556.0547.0469.0573.0548.0542.0460.0573.0524.0525.0449.0493.0
us-gaap:UnregulatedOperatingRevenue ▄▃▃▆▃▅▅█▁▄▄▇▁▃41.033.032.056.027.047.045.072.016.037.040.067.013.028.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:Assets ███▇▆▄▄▃▂▁▂▁▁▁9099.09069.09069.08869.08805.08470.08394.08154.07997.07948.08110.07975.07909.07892.0
us-gaap:Liabilities ███▇▆▄▄▂▁▁▂▂▁▁6438.06394.06456.06274.06159.05832.05803.05590.05455.05400.05604.05489.05444.05443.0
us-gaap:LiabilitiesAndStockholdersEquity ███▇▆▄▄▃▂▁▂▁▁▁9099.09069.09069.08869.08805.08470.08394.08154.07997.07948.08110.07975.07909.07892.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AssetsCurrent ▅▆███▃▃▁▂▅▆▆▃▄604.0622.0721.0720.0736.0505.0500.0416.0440.0596.0643.0631.0493.0532.0
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▄▇▇█▁▁▁▁▃▄▆▂▂17.0135.0257.0253.0303.030.030.011.011.089.0119.0200.048.070.0
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents NANA257.0NANANA30.0NANANA119.0NANANA
us-gaap:AccountsReceivableNetCurrent ███▇▄▆▂▂▁▅▃▃▂▁274.0268.0271.0250.0204.0233.0167.0161.0150.0226.0193.0189.0162.0152.0
us-gaap:OtherAssetsCurrent █▄▃▄▃▄▃▁▂▃▃▁▁▂219.0127.098.0123.0108.0124.0104.054.069.0108.090.051.056.081.0
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▅█▆▄▃▇▇▁▂▇▆▂▃▆51.068.057.044.037.064.063.028.035.060.054.031.038.056.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:PropertyPlantAndEquipmentGross █▇▆█▇▆▆▄▄▂▃▂▂▁11678.011545.011403.011675.011539.011389.011256.011036.010903.010616.010690.010558.010547.010414.0
us-gaap:AmortizationOfIntangibleAssets ▄▄█▆▆▄▄▆█▆▆▆▃▁15.015.017.016.016.015.015.016.017.016.016.016.014.013.0
us-gaap:OperatingLeaseRightOfUseAsset NANA44.0NANANA51.0NANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇▇█▇▇█▇▆▆▄▁▁▁170.0153.0153.0165.0158.0156.0166.0158.0142.0142.0101.055.055.053.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent NANA153.0NANANA165.0NANANA168.0NANANA
us-gaap:AccountsPayableCurrent ██▅▄▄▃▆▃▃▄▆▂▁▁196.0199.0153.0139.0134.0128.0165.0128.0119.0136.0168.0110.0103.097.0
us-gaap:DividendsPayableCurrent █▆▆▆▅▅▅▄▄▃▃▃▃▁40.037.038.037.036.036.036.035.035.033.034.033.033.031.0
us-gaap:LiabilitiesCurrent ▇▆▇█▆▄▃▃▂▅▆▅▅▁856.0774.0815.0924.0769.0632.0519.0514.0440.0731.0791.0703.0679.0393.0
us-gaap:LongTermDebtCurrent ▁▁▅▅▄▄▁▂▁████20.020.0160.0160.0140.0140.00.050.00.0300.0300.0300.0300.0NA
us-gaap:OtherLiabilitiesCurrent █▆▆█▄▄▅▄▂▃▃▂▁▁369.0319.0322.0368.0289.0296.0315.0293.0247.0263.0268.0251.0225.0229.0
us-gaap:TaxesPayableCurrent ▃▅▃█▂▂▃▅▂▄▃▅▁▃33.045.036.057.031.031.033.045.029.037.034.043.025.032.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:LongTermDebt ▆▆█▆▆▃▃▁▁▂▂▂▂▂2907.02906.03059.02817.02816.02618.02608.02378.02377.02478.02488.02427.02426.02426.0
us-gaap:LongTermDebtNoncurrent ███▆▆▄▅▃▃▁▁▁▁▄2887.02886.02886.02657.02676.02478.02597.02328.02377.02178.02178.02127.02126.02426.0
us-gaap:DeferredIncomeTaxLiabilitiesNet NANA374.0NANANA378.0NANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefitNANA26.0NANANA24.0NANANA22.0NANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANA41.0NANANA37.0NANANA42.0NANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANA257.0NANANA210.0NANANA265.0NANANA
us-gaap:OtherLiabilitiesNoncurrent ▂▁▂▁▁▁▁▂▁▁████81.074.077.071.075.072.076.079.069.067.0203.0199.0198.0198.0
us-gaap:OperatingLeaseLiabilityNoncurrent NANA36.0NANANA43.0NANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA8.0NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA8.0NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA7.0NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA1.0NANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA45.0NANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▆▆▇▇▅▅▄▄▃▂▁▁2661.02675.02613.02595.02646.02638.02591.02564.02542.02548.02506.02486.02465.02449.0
us-gaap:CommonStockValue ██▇▆▅▄▄▄▃▂▂▂▁▁1235.01233.01231.01226.01224.01220.01220.01217.01215.01212.01212.01209.01208.01206.0
us-gaap:RetainedEarningsAccumulatedDeficit ▇█▆▅▇▇▆▅▄▄▃▂▁▁1437.01453.01393.01378.01431.01427.01381.01354.01334.01344.01301.01285.01265.01251.0
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▁▄▄▄▃██▆█▆▆▆-11.0-11.0-11.0-9.0-9.0-9.0-10.0-7.0-7.0-8.0-7.0-8.0-8.0-8.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▇▅▃█▆▁▇▆▆▃█▅█108.0168.0125.086.0201.0155.044.0188.0158.0156.094.0198.0144.0194.0
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▃▁▃▂▃▂▄▅▄▂█▄▄-175.0-162.0-236.0-181.0-213.0-157.0-198.0-135.0-120.0-151.0-193.0-13.0-135.0-130.0
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▅▄█▃▆▂▁▃▃▃▃▃-51.0-128.0115.045.0285.02.0173.0-53.0-116.0-35.018.0-33.0-31.0-33.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit █▆▄▁▅█▆▅▅█▁▅▆▇7.0-1.0-9.0-18.0-3.07.03.0-3.0-3.09.0-19.0-4.00.06.0
us-gaap:DepreciationDepletionAndAmortization ▂▃█▄▃▄▃▃▂▂▂▂▁▁101.0103.0134.0108.0104.0108.0104.0103.0101.0101.0101.096.093.092.0
us-gaap:IncreaseDecreaseInAccountsPayable ▄▆▅█▄▃▅▇▁▄▇▇▄▃-13.026.02.051.0-5.0-22.09.040.0-52.0-13.034.037.0-3.0-17.0
us-gaap:IncreaseDecreaseInInventories █▁7.0-4.0NA-23.012.01.0NA-10.020.0-3.0NA-9.05.02.0
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▁▆▆▄▃▆█▄▃▆▇▄▃▅-46.014.010.0-9.0-27.09.037.0-9.0-28.012.030.0-6.0-18.05.0
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▇▅▃█▆▁▇▆▆▃█▅█108.0168.0125.086.0201.0155.044.0188.0158.0156.094.0198.0144.0194.0
us-gaap:ProfitLoss ▄█▅▁▄▇▆▅▄▇▅▅▅▆32.096.052.0-17.039.081.061.055.025.073.049.053.046.064.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▃▁▃▂▃▂▄▅▄▂█▄▄-175.0-162.0-236.0-181.0-213.0-157.0-198.0-135.0-120.0-151.0-193.0-13.0-135.0-130.0
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▄▃█▅▆▄▆▂▁▃▅▂▂▂173.0153.0235.0179.0208.0162.0199.0136.0121.0150.0194.0135.0135.0131.0
us-gaap:PaymentsToAcquireInvestments ▁█2.03.0NA2.01.02.0NA3.03.02.0NA4.02.03.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▅▄█▃▆▂▁▃▃▃▃▃-51.0-128.0115.045.0285.02.0173.0-53.0-116.0-35.018.0-33.0-31.0-33.0
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA230.00.0200.0119.0270.00.0200.00.075.00.0NANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:DebtInstrumentRedemptionPeriod us-gaap:DebtInstrumentRedemptionPeriodOneNANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:DebtInstrumentRedemptionPeriod us-gaap:DebtInstrumentRedemptionPeriodTwoNANANANANANANANANANANANANANA
us-gaap:RepaymentsOfLongTermDebt ▁▄▁▁▁▃▂▁█▁▂▁0.0140.00.00.00.098.050.00.0300.00.024.00.0NANA
us-gaap:PaymentsOfDividends █▇█▅▆▅▆▅▄▃▃▃▂▁37.036.037.034.035.034.035.034.033.032.032.032.031.030.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1235123312311226122412201220121712151212121212091208120612071204120312001201119911981195119611931191918918916914912911910889841841838837836836833832832831829
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.613.613.613.813.914.414.514.915.215.214.915.215.315.315.415.515.715.816.016.116.116.316.616.616.512.913.013.814.314.814.915.415.314.914.814.614.714.414.614.815.115.015.116.0

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value8989898988887878757575756262
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value898989898989898989890.0898989898989898888888888888878787878787878777575757575757575757575
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1601601601601601601601601601600.0160160160160160160160160160160160160160160160160160160160160160160160160160160160160160160160160160
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value303030303030303030300.0303030303030303030303030303030303030303030303030303030303030303030
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8989898989898989890.0898989898989898888888888888878787878787878777575757575757575757575
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value89898989898989898989898989898989898988888888888888787878787878787775757575757575757575757575
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value898989898989898989898888888081808080787575757575757575757575
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value898989898989898989898888888078787878777575757575757575757575
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.360.57-0.190.440.680.610.280.560.590.510.420.680.580.40.440.640.570.480.440.740.60.4-0.290.650.380.360.290.920.340.650.320.36
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.360.57-0.190.430.690.610.280.550.590.510.420.680.570.40.440.620.550.470.430.730.590.4-0.290.650.380.360.290.920.340.650.320.36
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2021-03-312020-03-312019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.070.910.820.590.510.720.440.360.820.380.420.680.40.4-0.290.650.380.50.340.650.380.360.290.92
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-312016-06-302016-03-312012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value329650-17.039825855267450534664337237612649282722692249
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue266.7417.40.0-121.4300.0683.30.0392.9152.9274.10.0530.0328.6581.80.00.00.00.00.00.00.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value476476475563398440451454403462449434369393407438381407418420364388415408378388428419365395422382414386392368352391410371354369396374358388
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue3966.72069.60.04021.43061.53666.70.03242.92370.61711.10.04340.02635.73572.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value79867563747167747871834970696764656862636161625960606354565461495554565056546055515246474845
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue658.3373.90.0450.0569.2591.70.0528.6458.8263.00.0490.0500.0627.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3610556-44.044996861288443625272825342967940467863445060585445785835-33.065495635644538319135703237
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue300.0456.50.0-314.3338.5825.00.0435.7164.7311.10.0620.0371.4654.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.09.0-27.05.0187.06.03.011-6.09.06.08.0401310.023186.09.017128.01510.0151610.020114.0-11.01721199.01516119.02213228.010.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue33.339.1-192.938.5150.00.042.917.640.70.090.042.972.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2020-09-302019-09-30
Value4.01.0
Percentage of IncomeTaxesPaidNet100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue28.67.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value33343435343333323132313131313030303030282727282828302523232526252525262727282827282728272629
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue275.0147.80.0250.0261.5275.00.0228.6182.4118.50.0310.0221.4281.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value45164314441243134713451445134213421343123910.041114214347.03510.033123213361335133715361536133316
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue375.069.60.0100.0338.5100.00.092.9276.548.10.0140.0321.4118.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Litigation Settlement Expense

us-gaap:LitigationSettlementExpense

us-gaap:LitigationSettlementExpense


Litigation
Period End2021-06-302021-03-312020-12-31
Value0.01150.0
Percentage of LitigationSettlementExpense0.0100.00.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.0500.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8.06.09.07.07.0-1.04.05.02.05.0-1.02.03.03.04.06.04.03.03.04.09.06.07.04.06.05.0111210.05.07.07.03.03.04.01.01.04.04.0-3.02.03.04.07.01.05.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue66.726.10.050.053.8-8.30.035.711.818.50.020.021.427.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6113381-16.071133978857111759180100108776812310664649984687285726558987753-11.0877182618869685711559905761
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue508.3578.30.0-114.3546.21108.30.0628.6335.3411.10.0910.0571.4909.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3000000.02000000.04000000.03000000.03000000.0-4000000.01000000.03000000.002000000.0-4000000.001000000.0-1000000.01000000.02000000.01000000.01000000.01000000.001000000.0-1000000.01000000.0-2000000.01000000.01000000.001000000.01000000.0-1000000.02000000.03000000.01000000.01000000.02000000.00-1000000.03000000.02000000.0-4000000.01000000.02000000.03000000.03000000.0-3000000.01000000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue25.08.70.021.423.1-33.30.021.40.07.40.00.07.1-9.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value329652-17.039816155257349534664424032736134376151363550433835584731-22.048283726492927226922482427
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue266.7417.40.0-121.4300.0675.00.0392.9147.1270.40.0530.0328.6581.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Regulated And Unregulated Operating Revenue

us-gaap:RegulatedAndUnregulatedOperatingRevenue

us-gaap:RegulatedAndUnregulatedOperatingRevenue


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value122312141312141417271610.01411
Percentage of RegulatedAndUnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Regulated Operating Revenue

us-gaap:RegulatedOperatingRevenue

us-gaap:RegulatedOperatingRevenue


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value484553512477429514489456427509468448411454
Percentage of RegulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue4033.32404.34266.73407.13300.04283.33492.93257.12511.81885.22925.04480.02935.74127.3

Revenue From Contract With Customer Including Assessed Tax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value545612562556469564551538462570519525449495515515449530
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue4541.72660.94683.33971.43607.74700.03935.73842.92717.62111.13243.85250.03207.14500.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value537609556547469573548542460573524525449493515515449530
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue4475.02647.84633.33907.13607.74775.03914.33871.42705.92122.23275.05250.03207.14481.80.00.00.00.0

Unregulated Operating Revenue

us-gaap:UnregulatedOperatingRevenue

us-gaap:UnregulatedOperatingRevenue


Unregulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4133325627474572163740671328
Percentage of UnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue341.7143.5266.7400.0207.7391.7321.4514.394.1137.0250.0670.092.9254.5

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value90999069906988698805847083948154799779488110797579097892783877597653761275277455744673447221719771987091704266576399616961015891579656615670575757025789573356115503553554915172
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value64386394645662746159583258035590545554005604548954445443542253575261522551835145514350534963496549775152513147684527431242814098403439033940403840014094406739553855389038923629
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets70.870.571.270.769.968.969.168.668.267.969.168.868.869.069.269.068.768.668.969.069.168.868.769.069.172.772.971.670.769.970.269.669.668.969.570.170.270.770.970.570.170.370.970.2

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value90999069906988698805847083948154799779488110797579097892783877597653761275277455744673447221719771987091704266576399616961015891579656615670575757025789573356115503553554915172
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value604622721720736505500416440596643631493532526466412485463476512537557605646584699542513549591565627564622784728780716740651689661690
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.66.98.08.18.46.06.05.15.57.57.97.96.26.76.76.05.46.46.26.46.97.37.78.49.08.29.98.18.08.99.79.610.810.011.013.612.813.512.513.211.812.412.013.3

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1713525725330330301111891192004870398933316.088934.04.09212227127979764107911193312156748.06.09772274.07.063523110.073
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.21.52.82.93.40.40.40.10.11.11.52.50.60.90.51.10.40.40.11.21.20.10.11.31.70.41.81.51.51.01.81.52.10.60.22.71.30.10.11.71.30.50.10.00.00.00.60.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2020-12-312019-12-312018-12-312017-12-31
Value2573011939
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0
Percentage of Assets2.80.41.50.5

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value274268271250204233167161150226193189162152168151139162155140124130158133122129149156121158146137137144152129133156144136134156137159
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.03.03.02.82.32.82.02.01.92.82.42.42.01.92.11.91.82.12.11.91.71.82.21.81.71.82.12.31.92.62.42.32.42.52.72.22.32.72.52.42.42.82.53.1

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2191279812310812410454691089051568173434387774164113889297133115769811494637810593996687987564816794
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.41.41.11.41.21.51.20.70.91.41.10.60.71.00.90.60.61.11.00.50.91.51.21.31.31.91.61.11.51.81.51.11.31.91.61.71.21.51.71.31.21.51.21.8

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value5168574437646328356054313856502734584828355543243258392532533825335137
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.60.50.40.80.80.30.40.80.70.40.50.70.60.30.40.80.60.40.50.70.60.30.40.80.60.40.50.90.60.40.60.90.7

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11678115451140311675115391138911256110361090310616106901055810547104141030510152100209847974796099489931091058966885887298578841881397777760373527180705169516894681467596716664365796404
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets128.3127.3125.7131.6131.1134.5134.1135.3136.3133.6131.8132.4133.4132.0131.5130.8130.9129.4129.5128.9127.4126.8126.1124.6123.1123.1121.8126.5127.2126.1124.6124.8123.9124.6122.6119.7119.5116.8117.1118.4119.6116.6

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value151517161615151617161616141312111211111110.01110.010.09.09.07.06.06.06.06.05.06.05.05.05.06.05.05.05.05.05.04.04.04.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-31
Value4451
Percentage of OperatingLeaseRightOfUseAsset100.0100.0
Percentage of Assets0.50.6

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value170153153165158156166158142142101555553545155545749514855525149484447474947495462635861656266777562
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.71.71.91.81.82.01.91.81.81.20.70.70.70.70.70.70.70.80.70.70.70.80.70.70.70.70.70.70.80.80.80.81.01.11.11.01.11.11.11.21.41.41.2

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1531651681321299815617398111172167144169187
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.72.02.11.71.71.42.22.81.71.93.13.02.63.13.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value196199153139134128165128119136168110103971321009092129112114989896125137156157181147173991077798766680111
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.21.71.61.51.52.01.61.51.72.11.41.31.21.71.31.21.21.71.51.51.31.41.31.71.92.22.42.82.42.81.71.81.41.71.31.21.41.9

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value403738373636363535333433333131313130302929282828272223232322222221202121212121212120
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.40.30.30.30.40.40.40.40.40.40.40.40.40.40.40.40.40.4

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value856774815924769632519514440731791703679393432491512548577448442508626465509809873482457451393380435460521648566588614511423447489620
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.48.59.010.48.77.56.26.35.59.29.88.88.65.05.56.36.77.27.76.05.96.98.76.57.111.412.47.27.17.36.46.57.58.19.211.39.910.210.79.17.78.18.912.0

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value20201601601401400.0500.03003003003000.01001501501500.00.00.01330.0553223757070700.00.0501001002001501001000.00.00.010.0186
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0
Percentage of Assets0.20.21.81.81.61.70.00.60.03.83.73.83.80.01.32.02.02.00.00.00.01.80.00.84.55.31.11.11.10.00.00.91.81.83.52.61.71.70.00.00.00.23.6

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value36931932236828929631529324726326825122522924124822624725427024726825925422824323621117418217119217519217922515716615113174957892
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.13.53.64.13.33.53.83.63.13.33.33.12.82.93.13.23.03.23.43.63.33.63.63.53.23.43.43.22.73.02.83.33.03.43.23.92.82.92.62.31.31.71.41.8

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value3345365731313345293734432532314625342543233025402126223719282135243021
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.40.60.40.40.40.60.40.50.40.50.30.40.40.60.30.40.30.60.30.40.30.60.30.40.30.60.30.50.30.60.40.50.4

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value29072906305928172816261826082378237724782488242724262426243623772350235023612325219922042204225924562501232121411916191617611736163616361736173617351735179817981808
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.932.033.731.832.030.931.129.229.731.230.730.430.730.731.130.630.730.931.431.229.930.530.631.434.635.534.933.531.131.429.930.028.928.930.230.430.030.332.032.732.9

us-gaap:LongTermDebt us-gaap:LongtermDebtType

us-gaap:NotesPayableToBanks


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value304625972478242623502193
Percentage of LongTermDebt99.699.699.699.699.599.5
Percentage of Assets33.630.930.631.031.230.4
Percentage of Assets us-gaap:NotesPayableToBanks0.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value28872886288626572676247825972328237721782178212721262426242622772200220022002325232421992071220422042134212622512071184619161761168615361536153615861635163517981798179817981558
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.731.831.830.030.429.330.928.629.727.426.926.726.930.731.029.328.728.929.231.231.229.928.730.630.630.130.233.832.429.931.429.929.127.127.126.727.828.228.532.032.732.532.730.1

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2020-12-312019-12-31
Value374378
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0
Percentage of Assets4.14.5

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2624222525
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.3
Percentage of Assets us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit0.00.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4137424543
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent157.7154.2190.9180.0172.0
Percentage of Assets0.50.40.50.60.6
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value257210265240238
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent988.5875.01204.5960.0952.0
Percentage of Assets2.82.53.33.13.2
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value81747771757276796967203199198198192177160113107798382292123222120242525171816141031001001011061031037875
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.80.80.80.90.90.91.00.90.82.52.52.52.52.42.32.11.51.41.11.11.10.40.30.30.30.30.30.40.40.40.30.30.30.21.81.81.71.81.91.91.91.41.5

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2020-12-312019-12-31
Value3643
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0
Percentage of Assets0.40.5

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value8000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value8000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value7000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value1000000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value45
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.5

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-30
Value44515240
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets0.50.60.60.5

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value77
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.8

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value33
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.4

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value26612675261325952646263825912564254225482506248624652449241624022392238723442310230322912258223222211939191118891872185718201793176217581730171917011695166616561648164515991543
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.229.528.829.330.131.130.931.431.832.130.931.231.231.030.831.031.331.431.131.030.931.231.331.030.927.327.128.429.330.129.830.430.431.130.529.929.829.329.129.529.929.729.129.8

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value-11.0-11.0-11.0-9.0-9.0-9.0-10.0-7.0-7.0-8.0-7.0-8.0-8.0-8.0-8.0-7.0-7.0-8.0-7.0-7.0-8.0-8.0-8.0-7.0-7.0-7.0-7.0-5.0-5.0-5.0-5.0-6.0-6.0-6.0-6.0-6.0-6.0-6.0-6.0-5.0-5.0-5.0-5.0-5.0-5.0-6.0-5.0-4.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.4-0.4-0.4-0.3-0.3-0.3-0.4-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.3-0.3-0.4-0.4-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.3-0.3-0.3-0.30.00.0-0.40.00.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.10.00.0-0.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value1235123312311226122412201220121712151212121212091208120612071204120312001201119911981195119611931191918918916914912911910889841841838837836836833832832831830830829659646
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest46.446.147.147.246.346.247.147.547.847.648.448.649.049.250.050.150.350.351.251.952.052.253.053.453.647.348.048.548.849.150.150.850.547.848.648.749.249.350.250.350.550.652.00.00.053.70.00.0
Percentage of Assets13.613.613.613.813.914.414.514.915.215.214.915.215.315.315.415.515.715.816.016.116.116.316.616.616.512.913.013.814.314.814.915.415.314.914.814.614.714.414.614.815.115.015.10.00.016.00.00.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-312007-12-31
Value143714531393137814311427138113541334134413011285126512511217120511961195115011181113110410701046103710281000978962949913888878922893885867862833825818815766760731719700674
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest54.054.353.353.154.154.153.352.852.552.751.951.751.351.150.450.250.050.149.148.448.348.247.446.946.753.052.351.851.451.150.249.549.852.451.651.551.050.950.049.849.649.547.90.00.046.60.00.0
Percentage of Assets15.816.015.415.516.316.816.516.616.716.916.016.116.015.915.515.515.615.715.315.014.915.014.814.514.414.514.214.715.015.415.015.115.116.315.715.415.214.914.514.714.914.714.00.00.013.90.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1235123312311226122412201220121712151212121212091208120612071204120312001201119911981195119611931191918918916914912911910889841841838837836836833832832831829
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.613.613.613.813.914.414.514.915.215.214.915.215.315.315.415.515.715.816.016.116.116.316.616.616.512.913.013.814.314.814.915.415.314.914.814.614.714.414.614.815.115.015.116.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value143714531393137814311427138113541334134413011285126512511217120511961195115011181113110410701046103710281000978962949913888878922893885867862833825818815766719
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.816.015.415.516.316.816.516.616.716.916.016.116.015.915.515.515.615.715.315.014.915.014.814.514.414.514.214.715.015.415.015.115.116.315.715.415.214.914.514.714.914.714.013.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-11000000.0-11000000.0-11000000.0-9000000.0-9000000.0-9000000.0-10000000.0-7000000.0-7000000.0-8000000.0-7000000.0-8000000.0-8000000.0-8000000.0-8000000.0-7000000.0-7000000.0-8000000.0-7000000.0-7000000.0-8000000.0-8000000.0-8000000.0-7000000.0-7000000.0-7000000.0-7000000.0-5000000.0-5000000.0-5000000.0-5000000.0-6000000.0-6000000.0-6000000.0-6000000.0-6000000.0-6000000.0-6000000.0-6000000.0-5000000.0-5000000.0-5000000.0-5000000.0-6000000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10816812586201155441881581569419814419478186163170561591771617819111413445171144158851801141654418315711054120133146747117868
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue900.0730.41041.7614.31546.21291.7314.31342.9929.4577.8587.51980.01028.61763.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-175000000.0-162000000.0-236000000.0-181000000.0-213000000.0-157000000.0-198000000.0-135000000.0-120000000.0-151000000.0-193000000.0-13000000.0-135000000.0-130000000.0-145000000.0-124000000.0-132000000.0-113000000.0-131000000.0-135000000.0-186000000.0-133000000.0-145000000.0-139000000.0-71000000.0-167000000.0-173000000.0-327000000.0-315000000.0-179000000.0-201000000.0-232000000.0-152000000.0-107000000.0-85000000.0-81000000.0-70000000.0-58000000.0-85000000.0-75000000.0-69000000.0-70000000.0-66000000.0-119000000.0-172000000.0-73000000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue-1458.3-704.3-1966.7-1292.9-1638.5-1308.3-1414.3-964.3-705.9-559.3-1206.2-130.0-964.3-1181.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-51.0-128.0115452852.0173-53.0-116.0-35.018-33.0-31.0-33.017-6.0-29.0-32.0-7.0-29.098-28.0-21.0-82.052-67.0158156204-22.013224124-37.0-103.0-20.0-21.0-50.0-60.0-20.0-19.0-53.0-11.0-8.05.026
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue-425.0-556.5958.3321.42192.316.71235.7-378.6-682.4-129.6112.5-330.0-221.4-300.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.0-1.0-9.0-18.0-3.07.03.0-3.0-3.09.0-19.0-4.00.06.035153.01719-2.06.0149.09.01210.08.0115.01513-1.0-14.013-23.0271924167.08.02519306.012
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1011031341081041081041031011011019693928887868477798382787676757776737562626262606363625759555665595757
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-13.0262.051-5.0-22.09.040-52.0-13.03437-3.0-17.0-9.043-19.0-10.0-16.044-2.0-11.0-7.035-21.0-1.0-31.047-23.0-6.01.026-9.0-4.04315-39.0-18.02.019-6.0-10.05.021-26.0-11.0
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value7.0-4.0-23.0121.0-10.020-3.0-9.05.02.0-12.05.0-5.0-5.05.0-1.0-7.06.013-2.022-2.0
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-46.01410.0-9.0-27.09.037-9.0-28.01230-6.0-18.05.019-9.0-24.01316-6.0-22.01619-8.0-27.02010.0-12.01.0137.0-13.01.0-12.0-24.03116-24.0-6.018-21.016-5.014-22.013
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10816812586201155441881581569419814419478186163170561591771617819111413445171144158851801141654418315711054120133146747117868
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue900.0730.41041.7614.31546.21291.7314.31342.9929.4577.8587.51980.01028.61763.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value329652-17.039816155257349534664424032736134376151363550433835584731-22.048283726492927226922482427
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue266.7417.4433.3-121.4300.0675.0435.7392.9147.1270.4306.2530.0328.6581.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-175000000.0-162000000.0-236000000.0-181000000.0-213000000.0-157000000.0-198000000.0-135000000.0-120000000.0-151000000.0-193000000.0-13000000.0-135000000.0-130000000.0-145000000.0-124000000.0-132000000.0-113000000.0-131000000.0-135000000.0-186000000.0-133000000.0-145000000.0-139000000.0-71000000.0-167000000.0-173000000.0-327000000.0-315000000.0-179000000.0-201000000.0-232000000.0-152000000.0-107000000.0-85000000.0-81000000.0-70000000.0-58000000.0-85000000.0-75000000.0-69000000.0-70000000.0-66000000.0-119000000.0-172000000.0-73000000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue-1458.3-704.3-1966.7-1292.9-1638.5-1308.3-1414.3-964.3-705.9-559.3-1206.2-130.0-964.3-1181.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value17315323517920816219913612115019413513513114512413111413013518813114613913517818332331618520319315210885816869857769696612017292
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments

us-gaap:PaymentsToAcquireInvestments


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.03.02.01.02.03.03.02.04.02.03.03.04.05.05.05.06.03.02.05.05.04.06.06.06.09.06.06.07.010.01219218.05.012
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-51.0-128.0115452852.0173-53.0-116.0-35.018-33.0-31.0-33.017-6.0-29.0-32.0-7.0-29.098-28.0-21.0-82.052-67.0158156204-22.013224124-37.0-103.0-20.0-21.0-50.0-60.0-20.0-19.0-53.0-11.0-8.05.026
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue-425.0-556.5958.3321.42192.316.71235.7-378.6-682.4-129.6112.5-330.0-221.4-300.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-102020-12-312020-09-302020-04-272020-06-302020-03-312019-11-152019-10-252019-12-312019-09-302019-04-122019-06-302019-03-312018-12-312018-09-302017-12-312017-08-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312016-01-312015-12-312015-09-302015-06-302015-03-312014-11-302014-12-312014-09-302014-06-302014-03-312013-12-312013-11-302013-09-302013-06-302012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2302300.02002001191601102700.02002000.0750.015075750.00.0250.01251401400.00.07075801001002250.050105751500.00.00.00.00.00.00.00.058191
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:DebtInstrumentRedemptionPeriod

us-gaap:DebtInstrumentRedemptionPeriodOne


Proceeds
Period End2020-12-10
Value70
Percentage of ProceedsFromIssuanceOfLongTermDebt30.4

us-gaap:DebtInstrumentRedemptionPeriodTwo


Proceeds
Period End2020-12-10
Value160
Percentage of ProceedsFromIssuanceOfLongTermDebt69.6

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.01400.00.00.098500.03000.0240.0100500.00.00.00.00.01330.0552671200.00.00.00.00.050501000.00.00.0630.00.010.00.00.037149
Percentage of RepaymentsOfLongTermDebt0.0100.00.00.00.0100.0100.00.0100.00.0100.00.0100.0100.00.00.00.00.00.0100.00.0100.0100.0100.00.00.00.00.00.0100.0100.0100.00.00.00.0100.00.00.0100.00.00.0100.0100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value37363734353435343332323231303130292828292627272622222123212222212120202021202020192020201919
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value11.18.661.40.1140.182-0.0040.0980.1070.131-0.050.1450.1150.1110.0740.2450.2380.24
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value374378369376669632903821851855713
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value265231257252330370311277314359264
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DecouplingMechanismDeferralsNet

por:DecouplingMechanismDeferralsNet


Decoupling
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value8.03.01.0-9.04.0-5.03.0-4.0-4.00.0-1.03.0-7.00.0-6.0-9.0-2.0-1.01.0-4.04.0-3.02.07.01.0-4.0-1.00.00.0-5.01.01.04.03.03.00.0-1.0-1.0
Percentage of DecouplingMechanismDeferralsNet100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0

por:NetGainOrLossRecognizedInStatementOfIncomeOffsetByRegulatoryAccounting

por:NetGainOrLossRecognizedInStatementOfIncomeOffsetByRegulatoryAccounting


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-112.0-39.0-10.063-1.0-42.07.0-24.0-30.0-49.020-8.09.0-15.0170.0-4.061-23.020183410.034338353-34.05212186-7.0-56.03.056303781299-72.0-10.0-25.0564-146.0-25.0
Percentage of NetGainOrLossRecognizedInStatementOfIncomeOffsetByRegulatoryAccounting100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContract

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContract


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-62.0-21.0-1.0-17.01739-4.0303.0-19.0-30.0-2.0-4.0-4.01.0-1.09.026-29.00.02812-5.0152050609.0-44.0-11.0868.0115.011-7.0-7.018572110.0-2.0-63.0692.0
Percentage of RealizedAndUnrealizedGainsAndLossesNetCommodityContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContractsElectricity

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContractsElectricity


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-44.0-23.00.011315322.0366.0-24.0-29.0-3.0-3.01.0-9.01.01633-26.08.02725-5.07.02941348.0-38.09.061-1.010.08.016-3.0-10.05342441.031-8.076-6.0
Percentage of RealizedAndUnrealizedGainsAndLossesNetCommodityContractsElectricity100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContractsNaturalGas

por:RealizedAndUnrealizedGainsAndLossesNetCommodityContractsNaturalGas


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-89.0-25.017-47.0-13.09.0-19.0-9.021-25.010.0-3.00.014377.07.034-42.010.0-41.01724350.0448925-6.0-36.0-2.010.028-8.013-19.0-11.0365730-17.0-6.01172-18.0
Percentage of RealizedAndUnrealizedGainsAndLossesNetCommodityContractsNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease

us-gaap:AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease


Allowance
Period End2021-06-302021-03-312020-09-302020-06-30
Value8.07.04.07.0
Percentage of AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries


Allowance
Period End2021-06-302021-03-312020-09-302020-06-30
Value2000000.01000000.01000000.02000000.0
Percentage of AllowanceForDoubtfulAccountsReceivableRecoveries100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value8.04.0-5.03.03.02.01.01.02.02.01.01.01.02.01.01.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationLiabilitiesIncurred us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetRetirementObligationLiabilitiesIncurred

por:NonUtilityMember


Asset
Period End2020-09-30
Value3.0
Percentage of AssetRetirementObligationLiabilitiesIncurred100.0

us-gaap:AssetRetirementObligationPeriodIncreaseDecrease us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetRetirementObligationPeriodIncreaseDecrease

por:NonUtilityMember


Asset
Period End2020-09-30
Value21
Percentage of AssetRetirementObligationPeriodIncreaseDecrease100.0

us-gaap:AssetRetirementObligationRevisionOfEstimate us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AssetRetirementObligationRevisionOfEstimate

por:NonUtilityMember


Asset
Period End2020-09-302019-09-30
Value4.013
Percentage of AssetRetirementObligationRevisionOfEstimate100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-118.0-122.04.0-50.02730.0190.0-78.0-30.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.00.0100.00.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.430.40750.40750.3850.3850.3850.3850.36250.36250.36250.36250.340.340.340.340.320.320.320.320.30.30.30.30.280.280.280.280.2750.2750.2750.2750.270.270.270.270.2650.2650.2650.2650.260.260.260.260.255
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice


Contract
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-8000000.0-3000000.0-9000000.009000000.0-3000000.04000000.0-2000000.03000000.05000000.000-2000000.000
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.00.0100.00.00.0

us-gaap:DeferredRevenueRevenueRecognized1

us-gaap:DeferredRevenueRevenueRecognized1


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-2.013157.01.05.05.04.06.07.07.01110.017
Percentage of DeferredRevenueRevenueRecognized1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-5000000.0-5000000.0-5000000.0-4000000.0-4000000.0-4000000.0-2000000.0-3000000.0-2000000.0-3000000.0-5000000.0-4000000.0-4000000.0-4000000.0-4000000.0-3000000.0-3000000.0-3000000.0-3000000.0-3000000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value11111111111110.010.010.010.01110.01110.01210.010.010.010.010.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value7.07.07.08.08.08.09.08.09.08.08.08.08.08.08.08.09.08.08.09.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value6.06.06.05.05.05.05.05.05.05.06.07.06.07.05.05.06.05.05.06.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value5.05.05.04.04.04.04.04.04.04.04.05.05.05.05.04.04.04.04.04.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss


Derivative
Period End2020-09-30
Value127
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss100.0

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3936363535353532333332303031312829292827
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-39.0-36.0-36.0-35.0-35.0-35.0-35.03233-33.0-32.0303031312829292827272726222123222222212220202061-20.0-21.0-20.0-19.0-20.0137-20.0
Percentage of DividendsCommonStock-100.0-100.0-100.0-100.0-100.0-100.0-100.0100.0100.0-100.0-100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value21.021.0021.00.210.2100.210.210.2100.210.210.2100.350.350.35
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-3.4-3.2-0.4-0.025-0.019-0.039-0.027-0.03700
Percentage of EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation

us-gaap:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-3.00.32.317.5-0.0260.0160.0030.010.0040.0130.038-0.001-0.0220.010.0050.034-0.0170.01
Percentage of EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments

us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.1-8.20.84.3-0.010.01-0.00900.0060.007-0.038-0.0060.0320.0060.006-0.064-0.023-0.009
Percentage of EffectiveIncomeTaxRateReconciliationOtherAdjustments100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent

us-gaap:EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent


Effective
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.1-1.2-1.01.0
Percentage of EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes

us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8.38.8-0.34.20.1090.07400.0650.0650.06500.0650.0650.065-0.0020.0530.0520.05
Percentage of EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationTaxCredits

us-gaap:EffectiveIncomeTaxRateReconciliationTaxCredits


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value11.78.9-14.80.1440.1090.1480.1510.1270.1230.170.180.1280.1240.161
Percentage of EffectiveIncomeTaxRateReconciliationTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EnvironmentalRemediationExpense

us-gaap:EnvironmentalRemediationExpense


Environmental
Period End2021-06-302021-03-31
Value06000000.0
Percentage of EnvironmentalRemediationExpense0.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3


Fair
Period End2021-06-30
Value3000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3


Fair
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value3000000.01000000.0002000000.0-1000000.0-1000000.01000000.0-2000000.0-1000000.0-1000000.01000000.00-1000000.02000000.0-1000000.00-14000000.00-2000000.01000000.02000000.03000000.000000-1000000.0000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.00.00.00.00.0100.00.00.00.0

us-gaap:GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments


Gain
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value-1000000.001000000.000001000000.00-1000000.0000-1000000.0000
Percentage of GainLossOnForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments100.00.0100.00.00.00.00.0100.00.0100.00.00.00.0100.00.00.00.0

us-gaap:GainOnDerivativeInstrumentsPretax

us-gaap:GainOnDerivativeInstrumentsPretax


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.010.0318.01612252.0117.0294.02.0
Percentage of GainOnDerivativeInstrumentsPretax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-31
Value-11000000.0-41000000.0
Percentage of IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities100.0100.0

us-gaap:IncreaseDecreaseInMarginDepositsOutstanding

us-gaap:IncreaseDecreaseInMarginDepositsOutstanding


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value341.0-14.0-3.0-10.0194.07.0-10.0-1.011-2.0-10.06.07.03.0-19.0120.0-7.0-25.07.013-8.08.09.06.03.0-15.08.0-27.02.0-25.013-61.01629-18.0-3.0-16.019-3.088-40.0-54.033
Percentage of IncreaseDecreaseInMarginDepositsOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2120-9.0255.0167.0157.09.0-11.07.010.07.0-3.06.010.05.0-9.010.06.013-13.06.08.06.02.05.07.02.00.0122.00.010.0-3.0-4.03.010.01.0-5.00.036-4.0-19.08.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncreaseDecreaseInReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.02.02143-21.0-19.02013-64.01.0411419-45.04315-26.0-29.0626.0-13.0-46.048-5.05.0-37.02423-41.0-14.047-8.0-68.029-37.0-1.0339.0-7.0-6.0271.0-78.0-5.092-33.0
Percentage of IncreaseDecreaseInReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares

us-gaap:IncrementalCommonSharesAttributableToContingentlyIssuableShares


Incremental
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value0.3670.3730.3020.3030.3010.2650.2670.2630.2290.2310.230.2670.2730.2740.3060.3050.3040.3080.3060.3030.3610.3650.3630.440.435
Percentage of IncrementalCommonSharesAttributableToContingentlyIssuableShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyDamagesSoughtValue

us-gaap:LossContingencyDamagesSoughtValue


Loss
Period End2021-06-302021-03-312018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.0120012000.00.00.01200
Percentage of LossContingencyDamagesSoughtValue0.0100.0100.00.00.00.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-2000000.0001000000.0-3000000.001000000.01000000.01000000.00001000000.0-1000000.01000000.0-1.000-1000000.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax100.00.00.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.00.0100.0

us-gaap:OtherCostOfOperatingRevenue

us-gaap:OtherCostOfOperatingRevenue


Other
Period End2021-06-30
Value2000000.0
Percentage of OtherCostOfOperatingRevenue100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-6.0-13.0168.0-27.0-19.04.0-17.0-11.0-10.0-13.0-4.00.0-4.0-11.0-2.0-9.0-7.03.01.0-5.0-4.02.0-8.0-5.0-6.06.0-6.0-5.0-7.00.0-5.0-23.010.0-31.04.0-3.014-67.0146.09.0-48.02.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.09.03.02.05.0-4.01.00.0-1.03.00.0-1.01.0-1.01.00.01.01.02.01.0-2.02.01.01.0-2.00.0-1.00.0-2.0-2.01.0-2.00.0-2.0-2.0-1.02.0-1.0-2.0-2.0-1.00.02.00.00.01.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:PensionAndOtherPostretirementBenefitExpense


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value6.06.05.05.06.06.05.04.06.06.0116.07.06.05.06.07.06.07.07.07.07.09.06.010.09.08.08.09.08.09.08.010.010.05.08.07.07.012-4.0
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions


Proceeds
Period End2021-06-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1000000.01000000.0001000000.001000000.00001000000.001000000.00001000000.00
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.00.00.0100.00.0100.00.00.00.0100.00.0100.00.00.00.0100.00.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Proceeds
Period End2021-06-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value1000000.01000000.0001000000.001000000.00001000000.001000000.00001000000.000001000000.001000000.0001000000.0
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions100.0100.00.00.0100.00.0100.00.00.00.0100.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-2000000.0-2000000.0-1000000.04000000.0-10000000.0-5000000.0-3000000.0-2000000.00-3000000.0-1000000.0-1000000.00-3000000.0-2000000.0-1000000.00-4000000.0-4000000.00-1000000.0-2000000.0-3000000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments

us-gaap:ProceedsFromSaleMaturityAndCollectionsOfInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.03.03.02.01.03.02.04.03.04.04.05.03.03.07.03.04.07.010.06.05.06.0114.03.04.04.04.03.06.05.06.06.08.05.05.06.07.07.010.01118239.05.013
Percentage of ProceedsFromSaleMaturityAndCollectionsOfInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromShortTermDebt

us-gaap:ProceedsFromShortTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-30
Value0.02000.075180200.00.00.00.00.00.00.00.0
Percentage of ProceedsFromShortTermDebt0.0100.00.0100.0100.0100.00.00.00.00.00.00.00.00.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5.04.05.04.04.03.03.02.02.03.03.02.02.04.03.04.03.02.02.04.08.07.06.06.05.04.011119.06.05.04.02.02.02.01.02.01.02.01.01.01.01.04.04.04.0
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedOperatingRevenueElectricNonNuclear

us-gaap:RegulatedOperatingRevenueElectricNonNuclear


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value494543503479428500487448423499470459421473
Percentage of RegulatedOperatingRevenueElectricNonNuclear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedOperatingRevenueElectricNonNuclear us-gaap:ProductOrService

por:Commercial


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value170162153164140159157167158154163171162151
Percentage of RegulatedOperatingRevenueElectricNonNuclear34.429.830.434.232.731.832.237.337.430.934.737.338.531.9

por:DirectAccesscustomers


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13111112121110.01310.011119.01310.0
Percentage of RegulatedOperatingRevenueElectricNonNuclear2.62.02.22.52.82.22.12.92.42.22.32.03.12.1

por:Industrial


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6260565853515250504447553944
Percentage of RegulatedOperatingRevenueElectricNonNuclear12.611.011.112.112.410.210.711.211.88.810.012.09.39.3

por:Residential


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value249310283245223279268218205290249224207268
Percentage of RegulatedOperatingRevenueElectricNonNuclear50.457.156.351.152.155.855.048.748.558.153.048.849.256.7

us-gaap:RepaymentsOfShortTermDebt

us-gaap:RepaymentsOfShortTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-30
Value0.0150750.030200.00.00.00.00.00.00.06.00.00.00.00.00.00.00.00.00.00.0
Percentage of RepaymentsOfShortTermDebt0.0100.0100.00.0100.0100.00.00.00.00.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation


Stock
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-30
Value4000000.02000000.02000000.03000000.02000000.02000000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation us-gaap:StatementEquityComponents

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-30
Value4000000.02000000.02000000.03000000.02000000.02000000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value74974.039417.02832.042430.077397.0414.015249.088352.023300.06453.024087.099854.022310.029395.0-5298.0121150.020078.05870.021397.0106610.020579.06543.020938.0116350.018911.07187.020185.096497.018260.04841.020277.0120910.021886.07105.022701.0141620.017605.04247.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions

us-gaap:TaxAdjustmentsSettlementsAndUnusualProvisions


Tax
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-6.0-6.0-5.0-6.0-7.0-5.0-6.0-5.08.01210.0150.00.00.00.0
Percentage of TaxAdjustmentsSettlementsAndUnusualProvisions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TaxesExcludingIncomeAndExciseTaxes


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value35383435343533343334343131332930313330293030302828302727272824272527252426272425242522232123
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TradingGainsLosses

us-gaap:TradingGainsLosses


Trading
Period End2020-09-30
Value127
Percentage of TradingGainsLosses100.0

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value76807865777382788677807271697473
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpensePurchasedPower

us-gaap:UtilitiesOperatingExpensePurchasedPower


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value185169154292109153165165105179151186104130149184
Percentage of UtilitiesOperatingExpensePurchasedPower100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value118000.0147000.0136000.0150000.0222000.0204000.000000003195000.02022000.01868000.01164000.0693000.0091000.013000.010000.020000.016000.075000.019000.016000.014000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-02-10
Value89
Percentage of EntityCommonStockSharesOutstanding100.0

dei:EntityNumberOfEmployees

dei:EntityNumberOfEmployees


Entity
Period End2020-12-31
Value3639.0
Percentage of EntityNumberOfEmployees100.0

por:AmountAuthorizedToLevy

por:AmountAuthorizedToLevy


Amount
Period End2021-06-30
Value100000.0
Percentage of AmountAuthorizedToLevy100.0

por:AssetRetirementObligationNonUtilityProperty

por:AssetRetirementObligationNonUtilityProperty


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-31
Value34161713121111111110.0131210.0
Percentage of AssetRetirementObligationNonUtilityProperty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:AssetRetirementObligationUtilityPlant

por:AssetRetirementObligationUtilityPlant


Asset
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-31
Value1181261121091059783816449393816
Percentage of AssetRetirementObligationUtilityPlant100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CollateralAggregateFairValue

por:CollateralAggregateFairValue


Collateral
Period End2021-06-302021-03-312020-09-30
Value80125145
Percentage of CollateralAggregateFairValue100.0100.0100.0

por:CollateralAggregateFairValue us-gaap:DerivativeInstrumentRisk

us-gaap:CreditRiskContract


Collateral
Period End2020-12-31
Value142
Percentage of CollateralAggregateFairValue0.0

por:CommodityContractAssetCurrentElectricity

por:CommodityContractAssetCurrentElectricity


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value37144.09.028149.06.01517114.03.02.03.03.03.03.06.02.08.0117.05.03.05.04.02.08.04.09.00.02.05.01.02.05.07.02.02.06.04.0
Percentage of CommodityContractAssetCurrentElectricity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractAssetCurrentNaturalGas

por:CommodityContractAssetCurrentNaturalGas


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value883629481811168.05.0167.01.01.02.03.01.02.06.0123.04.07.03.02.00.02.02.02.010.0144.01.01.06.03.03.02.018177.03.09.0
Percentage of CommodityContractAssetCurrentNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractAssetElectricity

por:CommodityContractAssetElectricity


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value40198.0112814167.01518125.03.02.03.03.05.05.07.02.09.0117.05.04.07.05.010.01.02.0
Percentage of CommodityContractAssetElectricity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractAssetElectricity us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value33144.09.028149.06.014149.04.01.02.03.03.03.03.06.02.08.0117.05.03.05.04.02.08.04.09.02.05.01.01.05.06.02.02.06.04.0
Percentage of CommodityContractAssetElectricity82.573.750.081.8100.0100.056.285.793.377.875.080.033.3100.0100.0100.060.060.085.7100.088.9100.0100.0100.075.071.480.00.00.00.090.00.00.0100.00.00.00.0100.00.00.00.0

us-gaap:FairValueInputsLevel3


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value7.05.04.02.00.00.07.01.01.04.03.01.02.00.00.00.02.02.01.00.01.00.00.00.01.02.01.00.00.00.01.00.00.00.01.00.01.00.00.01.01.0
Percentage of CommodityContractAssetElectricity17.526.350.018.20.00.043.814.36.722.225.020.066.70.00.00.040.040.014.30.011.10.00.00.025.028.620.00.00.00.010.00.00.00.00.00.00.00.00.00.00.0

por:CommodityContractAssetNaturalGas

por:CommodityContractAssetNaturalGas


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value119463770281622118.0198.01.01.02.03.01.02.06.0165.08.09.03.02.00.02.02.04.05.017
Percentage of CommodityContractAssetNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

por:CommodityContractAssetNaturalGas us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11144366025152110.07.0198.01.01.02.03.01.02.06.0155.08.09.03.02.00.02.02.03.012164.01.01.06.03.04.02.018177.03.011
Percentage of CommodityContractAssetNaturalGas93.395.797.385.789.393.895.590.987.5100.0100.0100.0100.0100.0100.0100.0100.0100.093.8100.0100.0100.0100.0100.00.0100.0100.00.00.00.0100.00.00.00.060.00.00.00.0100.00.00.00.0

us-gaap:FairValueInputsLevel3


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8.02.01.010.03.01.01.01.01.00.00.00.00.00.00.00.00.00.01.00.00.00.00.00.00.00.00.01.03.01.00.00.00.01.02.04.01.00.00.00.00.00.0
Percentage of CommodityContractAssetNaturalGas6.74.32.714.310.76.24.59.112.50.00.00.00.00.00.00.00.00.06.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.040.00.00.00.00.00.00.00.0

por:CommodityContractAssetNoncurrentElectricity

por:CommodityContractAssetNoncurrentElectricity


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312011-09-302011-06-302010-12-31
Value3000000.05000000.04000000.02000000.0007000000.01000000.001000000.01000000.01000000.0002000000.02000000.01000000.001000000.0001000000.02000000.01000000.00001000000.00001000000.01000000.0
Percentage of CommodityContractAssetNoncurrentElectricity100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.00.0100.00.00.0100.0100.0100.00.00.00.0100.00.00.00.0100.0100.0

por:CommodityContractAssetNoncurrentNaturalGas

por:CommodityContractAssetNoncurrentNaturalGas


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-31
Value3110.08.02210.05.06.03.03.03.01.00.00.00.00.00.04.02.04.02.00.02.05.03.00.00.00.01.02.05.01.00.00.00.02.0
Percentage of CommodityContractAssetNoncurrentNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.0100.00.00.00.0100.0

por:CommodityContractLiabilitiesElectricity

por:CommodityContractLiabilitiesElectricity


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value12313414614917314311910477759411612013413514314614911814315214613314815213811212782137
Percentage of CommodityContractLiabilitiesElectricity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractLiabilitiesElectricity us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value50115.03.0199.0145.08.06.010.04.04.0115.03.02.0166.04.07.02928312024324.04.02010.03945427263851301089068102
Percentage of CommodityContractLiabilitiesElectricity40.78.23.42.011.06.311.84.810.48.010.63.43.38.23.72.11.410.75.12.84.619.921.120.913.217.428.60.00.00.07.90.00.00.087.80.00.00.078.80.00.00.0

us-gaap:FairValueInputsLevel3


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value731231411461541341059969698411211612313014014413311213914511710511713211480808011511739423610.033313629362517
Percentage of CommodityContractLiabilitiesElectricity59.391.896.698.089.093.788.295.289.692.089.496.696.791.896.397.998.689.394.997.295.480.178.979.186.882.671.40.00.00.092.10.00.00.012.20.00.00.021.20.00.00.0

por:CommodityContractLiabilitiesNaturalGas

por:CommodityContractLiabilitiesNaturalGas


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value1.04.05.05.01218122239355850677775505866518610015715815113614511663118251
Percentage of CommodityContractLiabilitiesNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractLiabilitiesNaturalGas us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.03.04.05.012171218343051365266663747534265861431449999109951919264057808111090139189201104110153
Percentage of CommodityContractLiabilitiesNaturalGas100.075.080.0100.0100.094.4100.081.887.285.787.972.077.685.788.074.081.080.382.475.686.091.191.165.672.875.281.90.00.00.063.50.00.00.093.20.00.00.080.10.00.00.0

us-gaap:FairValueInputsLevel3


Commodity
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.01.00.01.00.04.05.05.07.01415119.01311139.0211414145237362119121723251410.08.051586050113103104
Percentage of CommodityContractLiabilitiesNaturalGas25.020.00.05.60.018.212.814.312.128.022.414.312.026.019.019.717.624.414.08.98.934.427.224.818.10.00.00.036.50.00.00.06.80.00.00.019.90.00.00.0

por:CommodityContractLiabilityCurrentElectricity

por:CommodityContractLiabilityCurrentElectricity


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value5417131130171412141216121220131110.024121114373638384754291833204243314454719066735677
Percentage of CommodityContractLiabilityCurrentElectricity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractLiabilityCurrentNaturalGas

por:CommodityContractLiabilityCurrentNaturalGas


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.03.02.05.010.0159.014262035303947463236353255671059477636052151419294760608393122152150123107111
Percentage of CommodityContractLiabilityCurrentNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractLiabilityNoncurrentElectricity

por:CommodityContractLiabilityNoncurrentElectricity


Commodity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value691171331381431261059263637810410811412213213612510613213810997110114915855661021073644473842457671533742
Percentage of CommodityContractLiabilityNoncurrentElectricity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CommodityContractLiabilityNoncurrentNaturalGas

por:CommodityContractLiabilityNoncurrentNaturalGas


Commodity
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.03.02.03.03.08.013152320283029182231193133526474738564231724343534313548759710194106146
Percentage of CommodityContractLiabilityNoncurrentNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:ConcentrationOfRiskDerivativeInstrumentsAssets

por:ConcentrationOfRiskDerivativeInstrumentsAssets


Concentration
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value55.058.066.065.00.680.580.710.630.630.570.620.610.810.70.540.820.640.640.60.650.490.680.690.730.690.750.770.680.60.630.670.60.50.520.610.440.550.470.620.560.590.67
Percentage of ConcentrationOfRiskDerivativeInstrumentsAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:ConcentrationOfRiskDerivativeInstrumentsLiabilities

por:ConcentrationOfRiskDerivativeInstrumentsLiabilities


Concentration
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value58.089.093.094.00.790.810.790.760.590.620.560.670.620.580.620.720.70.610.780.760.730.570.610.450.450.40.340.540.60.580.670.590.490.510.480.350.330.350.40.350.440.45
Percentage of ConcentrationOfRiskDerivativeInstrumentsLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CorporateDebtSecuritiesHeldInDecommissioningTrustAssets

por:CorporateDebtSecuritiesHeldInDecommissioningTrustAssets


Corporate
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value139.010.06.08.08.0119.08.011
Percentage of CorporateDebtSecuritiesHeldInDecommissioningTrustAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CorporateDebtSecuritiesHeldInDecommissioningTrustAssets us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Corporate
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value139.010.06.08.08.0119.08.0119.0
Percentage of CorporateDebtSecuritiesHeldInDecommissioningTrustAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

por:CounterpartyA

por:CounterpartyA


Counterparty
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value10.014.012.011.00.370.270.350.350.570.330.420.580.230.150.390.530.520.430.220.340.220.480.590.650.660.670.630.370.30.20.530.210.160.160.210.150.120.160.190.180.240.22
Percentage of CounterpartyA100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CounterpartyB

por:CounterpartyB


Counterparty
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value13.013.017.016.00.110.120.1300.060.110.050.030.010.180.120.030.060.140.170.120.210.110.10.080.030.080.140.20.190.180.050.140.130.150.130.120.120.120.160.140.130.11
Percentage of CounterpartyB100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CounterpartyC

por:CounterpartyC


Counterparty
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value21.017.021.021.00.110.10.110.170.130.150.390.10.030.010.060.070.120.10.060.090.360.220.110.110.150.050.110.10.090.110.110.110.110.130.120.120.23
Percentage of CounterpartyC100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CounterpartyD

por:CounterpartyD


Counterparty
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value11.014.016.017.00.090.090.110.110.090.180.170.070.150.080.070.10.10.040.090.040.090.10.060.110.080.070.090.10.01
Percentage of CounterpartyD100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CurrentDerivativeAssets

por:CurrentDerivativeAssets


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value125503357462525142033185.04.04.06.04.05.09.0185.0121810.07.03.07.06.04.01818131.03.0114.05.07.025199.09.013
Percentage of CurrentDerivativeAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:CurrentDerivativeLiabilities

por:CurrentDerivativeLiabilities


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value552015164032232640325142516759434659446681142130115101107106443252498910391127147193242216196163188
Percentage of CurrentDerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DebtSecuritiesDomesticGovernment

por:DebtSecuritiesDomesticGovernment


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312013-12-312012-12-312011-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.02000000.03000000.0
Percentage of DebtSecuritiesDomesticGovernment100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DebtSecuritiesDomesticGovernment us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312013-12-312012-12-312011-12-312010-12-31
Value1000000.01000000.01000000.01000000.01000000.01000000.01000000.02000000.03000000.02000000.0
Percentage of DebtSecuritiesDomesticGovernment100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

por:DeferredTaxAssetsPriceRiskManagement

por:DeferredTaxAssetsPriceRiskManagement


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value292636565911288717714572
Percentage of DeferredTaxAssetsPriceRiskManagement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DeferredTaxAssetsTaxCreditsNetOfValuationAllowance

por:DeferredTaxAssetsTaxCreditsNetOfValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7764525056461351555640
Percentage of DeferredTaxAssetsTaxCreditsNetOfValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DerivativeAssetsTotal

por:DerivativeAssetsTotal


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value159654581563038182337206.04.04.06.04.07.011237.0172010.07.04.09.07.06.02321141.03.0126.010.08.025199.010.016
Percentage of DerivativeAssetsTotal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DerivativeLiabilitiesTotal

por:DerivativeLiabilitiesTotal


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value124138151154185161131126116110152166187211210193204215169229252303291299288283228122115178190160181169200237313415388343306376
Percentage of DerivativeLiabilitiesTotal100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DividendReinvestmentAndDirectStockPurchasePlanNumberOfAvailableShares

por:DividendReinvestmentAndDirectStockPurchasePlanNumberOfAvailableShares


Dividend
Period End2020-12-31
Value2462300.0
Percentage of DividendReinvestmentAndDirectStockPurchasePlanNumberOfAvailableShares100.0

por:DomesticEquitySecurities

por:DomesticEquitySecurities


Domestic
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7.07.06.07.04.05.05.07.04.09.0
Percentage of DomesticEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:DomesticEquitySecurities us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Domestic
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7.07.06.07.04.03.04.04.02.07.016
Percentage of DomesticEquitySecurities100.0100.0100.0100.0100.060.080.057.150.077.80.0

por:ElectricityPhysicalForwardPurchase us-gaap:FinancialInstrument

por:ElectricityPhysicalForwardPurchase

us-gaap:Assets


Electricity
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value5.00.00.00.00.01.04.03.00.02.00.00.00.00.00.00.00.00.0
Percentage of ElectricityPhysicalForwardPurchase100.00.00.00.00.0100.0100.0100.00.0100.00.00.00.00.00.00.00.00.0

us-gaap:DerivativeFinancialInstrumentsLiabilities


Electricity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value7212314114414713010496686984112116122130140143132112139105
Percentage of ElectricityPhysicalForwardPurchase1440.00.00.00.00.00.00.00.06800.01725.02800.00.05800.00.00.00.00.00.00.00.00.0

por:ElectricityPhysicalForwardPurchase us-gaap:Range

srt:Maximum


Electricity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.000148389999999999987.358e-055.118e-054.321e-053.884e-054.358e-055.9e-056.441e-057.879999999999999e-057.57e-056.9e-054.911e-054.1229999999999997e-05
Percentage of ElectricityPhysicalForwardPurchase0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Minimum


Electricity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1.888e-055.75e-061.117e-051.266e-052.69e-069.04e-061.2529999999999999e-051.1570000000000001e-051.363e-051.224e-051.4599999999999999e-051.234e-057.79e-06
Percentage of ElectricityPhysicalForwardPurchase0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:WeightedAverage


Electricity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5.168e-053.3390000000000004e-052.974e-052.9489999999999997e-052.951e-053.425e-053.692e-054.298e-055.143e-055.085e-054.5e-053.383e-053.095e-05
Percentage of ElectricityPhysicalForwardPurchase0.00.00.00.00.00.00.00.00.00.00.00.00.0

por:EmployeeStockPurchasePlanNumberOfAvailableShares

por:EmployeeStockPurchasePlanNumberOfAvailableShares


Employee
Period End2020-12-31
Value241280.0
Percentage of EmployeeStockPurchasePlanNumberOfAvailableShares100.0

por:EmployeeStockPurchasePlanSharesAuthorized

por:EmployeeStockPurchasePlanSharesAuthorized


Employee
Period End2020-12-31
Value625000.0
Percentage of EmployeeStockPurchasePlanSharesAuthorized100.0

por:FairValueMoneyMarketFunds

por:FairValueMoneyMarketFunds


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312012-12-31
Value2000000.01000000.01000000.01000000.01000000.01000000.01000000.02000000.01000000.02000000.02000000.03000000.02000000.01000000.01000000.02000000.02000000.01000000.01000000.01000000.02000000.0
Percentage of FairValueMoneyMarketFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:FairValueMoneyMarketFunds us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312012-12-31
Value2000000.01000000.01000000.01000000.01000000.01000000.01000000.02000000.01000000.02000000.02000000.03000000.02000000.01000000.01000000.02000000.02000000.01000000.01000000.000
Percentage of FairValueMoneyMarketFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

por:FirstMortgageBondsMaximumRate

por:FirstMortgageBondsMaximumRate


First
Period End2020-12-312014-12-312013-12-312012-12-31
Value9.310.09310.09310.0931
Percentage of FirstMortgageBondsMaximumRate100.0100.0100.0100.0

por:FirstMortgageBondsMinimumRate

por:FirstMortgageBondsMinimumRate


First
Period End2020-12-312014-12-312013-12-312012-12-31
Value1.840.03460.03460.0346
Percentage of FirstMortgageBondsMinimumRate100.0100.0100.0100.0

por:FnancialSwapsElectricity us-gaap:FinancialInstrument

por:FnancialSwapsElectricity

us-gaap:Assets


Fnancial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value2.05.04.02.00.00.07.01.00.01.00.00.00.00.02.02.01.00.00.0
Percentage of FnancialSwapsElectricity100.0100.0100.0100.00.00.0100.0100.00.0100.00.00.00.00.0100.0100.0100.00.00.0

us-gaap:AvailableforsaleSecurities


Fnancial
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value4.07.00.00.01.00.0
Percentage of FnancialSwapsElectricity100.0100.00.00.0100.00.0

us-gaap:DerivativeFinancialInstrumentsLiabilities


Fnancial
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1.02.07.04.01.03.01.00.00.00.01.00.00.01.01.00.00.00.0
Percentage of FnancialSwapsElectricity50.0100.00.00.014.3300.00.00.00.00.00.00.00.050.050.00.00.00.0

por:FnancialSwapsElectricity us-gaap:Range

srt:Maximum


Fnancial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302017-12-31
Value9.6e-057.358e-055.842e-055.6e-055.1030000000000004e-055.422e-056.631999999999999e-055.397e-056.025e-053.546e-053.075e-052.974e-05
Percentage of FnancialSwapsElectricity0.00.00.00.00.00.00.00.00.00.00.00.0

srt:Minimum


Fnancial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302017-12-31
Value2.178e-055.75e-068.779999999999999e-061.65e-051.325e-059.5e-061.057e-051.55e-052.4789999999999998e-052.075e-051.49e-057.79e-06
Percentage of FnancialSwapsElectricity0.00.00.00.00.00.00.00.00.00.00.00.0

srt:WeightedAverage


Fnancial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302017-12-31
Value4.747e-053.797e-054.371e-053.863e-053.629e-053.817e-054.511e-053.6899999999999996e-053.7170000000000005e-052.863e-052.5149999999999998e-052.174e-05
Percentage of FnancialSwapsElectricity0.00.00.00.00.00.00.00.00.00.00.00.0

por:LesseeOperatingLeaseLeaseNotYetCommencedEstimatedPresentValueOfFutureLeasePayments

por:LesseeOperatingLeaseLeaseNotYetCommencedEstimatedPresentValueOfFutureLeasePayments


Lessee
Period End2020-12-31
Value30
Percentage of LesseeOperatingLeaseLeaseNotYetCommencedEstimatedPresentValueOfFutureLeasePayments100.0

por:Letterofcreditfacility

por:Letterofcreditfacility


Letterofcreditfacility
Period End2020-12-312013-12-312013-09-30
Value2203021
Percentage of Letterofcreditfacility100.0100.0100.0

por:LineOfCreditFacilityExpansionRequestPotentialMaximumBorrowingCapacity

por:LineOfCreditFacilityExpansionRequestPotentialMaximumBorrowingCapacity


Line
Period End2020-12-31
Value600
Percentage of LineOfCreditFacilityExpansionRequestPotentialMaximumBorrowingCapacity100.0

por:MutualFundsDebt

por:MutualFundsDebt


Mutual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value1000000.08000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.0
Percentage of MutualFundsDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:MutualFundsDebt us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Mutual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1000000.08000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.01000000.02000000.02000000.02000000.03000000.02000000.02000000.03000000.02000000.03000000.02000000.0
Percentage of MutualFundsDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

por:MutualFundsEquity

por:MutualFundsEquity


Mutual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value8.01.07.07.06.06.07.06.06.06.06.06.07.06.07.06.06.06.04.04.03.03.03.06.07.06.05.0
Percentage of MutualFundsEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:MutualFundsEquity us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Mutual
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8.01.07.07.06.06.07.06.06.06.06.06.07.06.07.06.06.06.04.04.03.03.03.04.05.05.04.04.04.05.04.05.03.03.02.03.05.00.07.09.01316
Percentage of MutualFundsEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.066.771.483.380.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

por:NaturalGasFinancialSwaps us-gaap:FinancialInstrument

por:NaturalGasFinancialSwaps

us-gaap:Assets


Natural
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value8.02.01.010.03.01.01.01.01.00.00.00.00.00.00.00.00.00.01.00.00.0
Percentage of NaturalGasFinancialSwaps100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.0100.00.00.0

us-gaap:AvailableforsaleSecurities


Natural
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1.01.00.00.01.00.0
Percentage of NaturalGasFinancialSwaps100.0100.00.00.0100.00.0

us-gaap:DerivativeFinancialInstrumentsLiabilities


Natural
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1.01.00.01.00.04.05.05.07.01415119.01311139.02114
Percentage of NaturalGasFinancialSwaps50.0100.00.0100.00.0400.0500.00.00.00.00.00.00.00.00.00.0900.00.00.0

por:NaturalGasFinancialSwaps us-gaap:Range

srt:Maximum


Natural
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5.0099999999999995e-064.32e-064.33e-064.769999999999999e-063.91e-061.83e-063.73e-063.74e-063.67e-064.1e-064.64e-063.2099999999999998e-062.92e-06
Percentage of NaturalGasFinancialSwaps0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Minimum


Natural
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1.8600000000000002e-061.6000000000000001e-061.52e-061.64e-061.44e-061.35e-061.3899999999999998e-061.23e-061.03e-061.04e-069.499999999999999e-071.02e-061.26e-06
Percentage of NaturalGasFinancialSwaps0.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:WeightedAverage


Natural
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2.5099999999999997e-062.2200000000000003e-062.29e-062.39e-062.12e-061.54e-061.8999999999999998e-061.69e-061.6699999999999999e-061.8000000000000001e-061.8200000000000002e-061.68e-061.8999999999999998e-06
Percentage of NaturalGasFinancialSwaps0.00.00.00.00.00.00.00.00.00.00.00.00.0

por:NetLiabilitiesFromPriceRiskManagementActivitiesClassifiedAsLevel3

por:NetLiabilitiesFromPriceRiskManagementActivitiesClassifiedAsLevel3


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value581171371341511349710172708812512913413915315314411916015813111916916814810098891311396456451679889579149127116120295225221154123
Percentage of NetLiabilitiesFromPriceRiskManagementActivitiesClassifiedAsLevel3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:NoncurrentDerivativeLiabilities

por:NoncurrentDerivativeLiabilities


Noncurrent
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value69118136138145129108100767810112413614415115015815612516317116116118418717612278831261417178787390120173172147143188
Percentage of NoncurrentDerivativeLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:NumberOfRetailCustomers

por:NumberOfRetailCustomers


Number
Period End2021-06-302021-03-312020-12-312020-09-30
Value912000.0909000.0908000.0904000.0
Percentage of NumberOfRetailCustomers100.0100.0100.0100.0

por:NumberOfUnionEmployees

por:NumberOfUnionEmployees


Number
Period End2020-12-31
Value721.0
Percentage of NumberOfUnionEmployees100.0

por:NumberOfUnionEmployeesSubjectToAgreementA

por:NumberOfUnionEmployeesSubjectToAgreementA


Number
Period End2020-12-31
Value660.0
Percentage of NumberOfUnionEmployeesSubjectToAgreementA100.0

por:NumberOfUnionEmployeesSubjectToAgreementB

por:NumberOfUnionEmployeesSubjectToAgreementB


Number
Period End2020-12-31
Value61.0
Percentage of NumberOfUnionEmployeesSubjectToAgreementB100.0

por:OperatingLeaseLiabilityRelatedToPowerPurchaseAgreements

por:OperatingLeaseLiabilityRelatedToPowerPurchaseAgreements


Operating
Period End2020-12-312019-12-31
Value2532
Percentage of OperatingLeaseLiabilityRelatedToPowerPurchaseAgreements100.0100.0

por:OtherCurrentLiabilitiesOther

por:OtherCurrentLiabilitiesOther


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1271041291039210010371636671626456616059607164697175575957546062565854626277607372628.08.010.0
Percentage of OtherCurrentLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:PgePortionOfCapacity us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

por:PgePortionOfCapacity

por:PriestRapidsAndWanapum


Pge
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value163.0163.0163.0163.0163.0163.0163.0170.0181.0176.0
Percentage of PgePortionOfCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:Wells


Pge
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value94.098.0135.0150.0150.0150.0150.0150.0159.0159.0
Percentage of PgePortionOfCapacity57.760.182.892.092.092.092.088.287.890.3

por:PgeShareOfOutput us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

por:PgeShareOfOutput

por:PriestRapidsAndWanapum


Pge
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value8.60.0860.0860.0860.0860.0860.0860.090.090.088
Percentage of PgeShareOfOutput100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:Wells


Pge
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value16.60.1360.090.1940.1940.1940.1940.1940.1940.194
Percentage of PgeShareOfOutput193.0158.1104.7225.6225.6225.6225.6215.6215.6220.5

por:PublicUtilitiesPropertyPlantAndEquipmentGeneral

por:PublicUtilitiesPropertyPlantAndEquipmentGeneral


Public
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value679656611550501463426381327314294277
Percentage of PublicUtilitiesPropertyPlantAndEquipmentGeneral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:PublicUtilitiesPropertyPlantAndEquipmentIntangible

por:PublicUtilitiesPropertyPlantAndEquipmentIntangible


Public
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value753758715607572556478386357331286214
Percentage of PublicUtilitiesPropertyPlantAndEquipmentIntangible100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet

por:PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet


Public
Period End2020-12-312019-12-31
Value71106833
Percentage of PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceNet100.0100.0

por:RegulatoryAssetsEarningRateOfReturnAtApprovedRate us-gaap:RegulatoryLiability

por:RegulatoryAssetsEarningRateOfReturnAtApprovedRate

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2020-12-312019-12-312018-12-31
Value464739
Percentage of RegulatoryAssetsEarningRateOfReturnAtApprovedRate100.0100.0100.0

por:RegulatoryAssetsFromPriceRiskManagementActivities

por:RegulatoryAssetsFromPriceRiskManagementActivities


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value125503357462525142033205.03.04.06.04.05.09.0185.0121810.07.03.07.06.04.01818131.03.0114.019
Percentage of RegulatoryAssetsFromPriceRiskManagementActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:RemainingAmountsOfRegulatoryLiabilitesForWhichNoInterstAccruesDuringRecoveryPeriodIsProvided us-gaap:RegulatoryLiability

por:RemainingAmountsOfRegulatoryLiabilitesForWhichNoInterstAccruesDuringRecoveryPeriodIsProvided

us-gaap:OtherRegulatoryAssetsLiabilities


Remaining
Period End2020-12-31
Value54
Percentage of RemainingAmountsOfRegulatoryLiabilitesForWhichNoInterstAccruesDuringRecoveryPeriodIsProvided100.0

por:RevenueBondsIssuedByPublicUtilityDistricts us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

por:RevenueBondsIssuedByPublicUtilityDistricts

por:PriestRapidsAndWanapum


Revenue
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value18801302123612691190119111021001928917
Percentage of RevenueBondsIssuedByPublicUtilityDistricts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:Wells


Revenue
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value572651757160177207215232238259
Percentage of RevenueBondsIssuedByPublicUtilityDistricts30.450.061.212.614.917.419.523.225.628.2

por:ServiceAreaPopulation

por:ServiceAreaPopulation


Service
Period End2020-12-31
Value1900000.0
Percentage of ServiceAreaPopulation100.0

por:TaxCreditCarryforwardFederal

por:TaxCreditCarryforwardFederal


Tax
Period End2020-12-31
Value77
Percentage of TaxCreditCarryforwardFederal100.0

por:TotalCommodityContracts us-gaap:FinancialInstrument

por:TotalCommodityContracts

us-gaap:Assets


Total
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value157.05.0123.01.08.02.02.04.03.01.02.00.00.00.02.02.02.00.00.0
Percentage of TotalCommodityContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.00.00.0

us-gaap:AvailableforsaleSecurities


Total
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.08.03.00.02.00.0
Percentage of TotalCommodityContracts100.0100.0100.00.0100.00.0

us-gaap:DerivativeFinancialInstrumentsLiabilities


Total
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value73124142146154135105103747491126131134139153155146121160119
Percentage of TotalCommodityContracts486.71771.42840.01216.75133.313500.01312.55150.03700.01850.03033.312600.06550.00.00.00.07750.07300.06050.00.00.0

por:TrojanDecommissioningActivities

por:TrojanDecommissioningActivities


Trojan
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302014-12-312013-12-312012-12-312011-12-312010-12-31
Value13913768454443434141423738
Percentage of TrojanDecommissioningActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:VolumeRelatedToDerivativeInstrumentsAtBalanceSheetDateCommodityContractsNaturalGas

por:VolumeRelatedToDerivativeInstrumentsAtBalanceSheetDateCommodityContractsNaturalGas


Volume
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value167154137133147144145140142134123115112110114114118101107123130118124124129126127100110104106104103878685747179828293
Percentage of VolumeRelatedToDerivativeInstrumentsAtBalanceSheetDateCommodityContractsNaturalGas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:VolumeRelatedToDerivativeInstrumentsHeldAtBalanceSheetDateCommodityContractsElectricity

por:VolumeRelatedToDerivativeInstrumentsHeldAtBalanceSheetDateCommodityContractsElectricity


Volume
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3.05.06.08.08.08.06.06.06.07.05.06.05.07.07.06.05.08.08.08.07.0121213121516181822141210.0131110.011121313129.0
Percentage of VolumeRelatedToDerivativeInstrumentsHeldAtBalanceSheetDateCommodityContractsElectricity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

por:VolumeRelatedtoDerivativeInstrumentsHeldatBalanceSheetDateForeignCurrency

por:VolumeRelatedtoDerivativeInstrumentsHeldatBalanceSheetDateForeignCurrency


Volume
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value191919212124232121201820222221212832222121217.07.07.07.07.08.09.02.07.07.07.0
Percentage of VolumeRelatedtoDerivativeInstrumentsHeldatBalanceSheetDateForeignCurrency100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedCappingClosurePostClosureAndEnvironmentalCostsNoncurrent

us-gaap:AccruedCappingClosurePostClosureAndEnvironmentalCostsNoncurrent


Accrued
Period End2020-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value44114112111110110109
Percentage of AccruedCappingClosurePostClosureAndEnvironmentalCostsNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value22201614126.05.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value165.0156.06.06.06.07.06.06.07.07.06.05.05.06.05.06.06.06.06.05.05.05.05.05.05.05.04.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligation

us-gaap:AssetRetirementObligation


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value2632702912512652632792681991981971961921911671661651641611561551521511371351191161071051011009696939487646358
Percentage of AssetRetirementObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetRetirementObligationCurrent

us-gaap:AssetRetirementObligationCurrent


Asset
Period End2020-12-312019-12-312018-12-31
Value21160.0
Percentage of AssetRetirementObligationCurrent100.0100.00.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2020-12-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312012-12-312011-12-312010-12-31
Value270263171716131313948764
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value21319135436540486119738817418323487114575457607257
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldInTrustNoncurrent

us-gaap:AssetsHeldInTrustNoncurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4643423937343837373736393836373736343434333233333534323333333534323232323436363642444447
Percentage of AssetsHeldInTrustNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldInTrustNoncurrent us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2321202018
Percentage of AssetsHeldInTrustNoncurrent54.855.355.654.152.9

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1917161716
Percentage of AssetsHeldInTrustNoncurrent45.244.744.445.947.1

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:CashAndCashEquivalentsFairValueDisclosure


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value722552282933.0260.01182112170316030
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Cash
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value722552282933.0260.01182112170316030
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashSurrenderValueFairValueDisclosure

us-gaap:CashSurrenderValueFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3533333029262928292827292828282827262626252626272726262625262524242323242423222323
Percentage of CashSurrenderValueFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashSurrenderValueFairValueDisclosure por:Trust

por:NonQualifiedBenefitPlans


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3329272826262626232323
Percentage of CashSurrenderValueFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CollateralAlreadyPostedAggregateFairValue

us-gaap:CollateralAlreadyPostedAggregateFairValue


Collateral
Period End2021-06-302021-03-312020-09-302017-03-312016-12-31
Value119.010.01611
Percentage of CollateralAlreadyPostedAggregateFairValue100.0100.0100.0100.0100.0

us-gaap:CollateralAlreadyPostedAggregateFairValue us-gaap:DerivativeInstrumentRisk

us-gaap:CreditRiskContract


Collateral
Period End2020-12-31
Value13
Percentage of CollateralAlreadyPostedAggregateFairValue0.0

us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedDiscount


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312012-12-312011-12-312010-12-31
Value131110.010.011110.01.01.0
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:DecommissioningFundInvestments

us-gaap:DecommissioningFundInvestments


Decommissioning
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value43444547474546464646424242424241414141414141404040909089838382823738383737363737363434
Percentage of DecommissioningFundInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DecommissioningLiabilityNoncurrent

us-gaap:DecommissioningLiabilityNoncurrent


Decommissioning
Period End2020-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.01376869696845
Percentage of DecommissioningLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DecommissioningTrustAssetsAmount

us-gaap:DecommissioningTrustAssetsAmount


Decommissioning
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value454642424140908238373450
Percentage of DecommissioningTrustAssetsAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-31
Value639609
Percentage of DeferredIncomeTaxLiabilities100.0100.0

us-gaap:DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent

us-gaap:DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value402391374378385385378
Percentage of DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value887977826464645558595257555350
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsDomestic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsRegulatoryAssetsAndLiabilities

us-gaap:DeferredTaxAssetsRegulatoryAssetsAndLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2322261429424816202237
Percentage of DeferredTaxAssetsRegulatoryAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value13611913412818117016112216213598
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7000000.010000000.00001000000.0004000000.09000000.04000000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.00.00.00.0100.00.00.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value504496511496829781693646623572534
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value128103115132170220210175224274175
Percentage of DeferredTaxLiabilitiesRegulatoryAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent


Defined
Period End2020-12-312019-12-31
Value299247
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2426242727
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value907813734778714
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation3779.23126.93058.32881.52644.4

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:Range, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

srt:Maximum, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value2.920.03470.0426
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0

srt:Minimum, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value2.220.03190.041
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate76.091.996.2

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value2.640.03430.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate90.498.899.8

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value2.640.03430.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate90.498.899.8

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value282624272727
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value767172787381
Percentage of DefinedBenefitPlanBenefitObligation271.4273.1300.0288.9270.4300.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1010905811869797758
Percentage of DefinedBenefitPlanBenefitObligation3607.13480.83379.23218.52951.92807.4

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value273270270266261262256255251
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value111110.010.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter4.04.13.73.8

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value19202222
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter7.07.48.18.3

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value243239238234
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter89.088.588.188.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value525148464544424139
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value45444139
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths86.586.385.484.8

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value545453515049494745
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.06.06.05.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive9.311.111.39.8

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value47464544
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive87.085.284.986.3

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value555352494849474644
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.05.05.04.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour10.99.49.68.2

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value47464543
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour85.586.886.587.8

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value545251494847454442
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.02.02.02.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree5.63.83.94.1

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value46454442
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree85.286.586.385.7

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value525149494645444340
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.02.02.03.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo3.83.94.16.1

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value45444241
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo86.586.385.783.7

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:EquitySecurities, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value9.08.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0

us-gaap:EquitySecurities, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value692632
Percentage of DefinedBenefitPlanFairValueOfPlanAssets7688.97900.0

us-gaap:PrivateEquityFunds, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value6.05.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets66.762.5

us-gaap:PrivateEquityFundsDomestic, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value6.09.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets66.7112.5

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:EquitySecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value9.08.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0

us-gaap:EquitySecurities, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value692632
Percentage of DefinedBenefitPlanFairValueOfPlanAssets7688.97900.0

us-gaap:PrivateEquityFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value6.05.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets66.762.5

us-gaap:PrivateEquityFundsDomestic, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value6.09.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets66.7112.5

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType

us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value1413
Percentage of DefinedBenefitPlanFairValueOfPlanAssets155.6162.5

us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value704646
Percentage of DefinedBenefitPlanFairValueOfPlanAssets7822.28075.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value191716171615
Percentage of DefinedBenefitPlanFairValueOfPlanAssets211.1212.50.00.00.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value353430333030
Percentage of DefinedBenefitPlanFairValueOfPlanAssets388.9425.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value753695546629559550
Percentage of DefinedBenefitPlanFairValueOfPlanAssets8366.78687.50.00.00.00.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanFundedStatusOfPlan


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-299000000.0-299000000.0-299000000.0-250000000.0-249000000.0-248000000.0-247000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-9000000.0-9000000.0-8000000.0-10000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan3.03.60.00.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-41000000.0-37000000.0-42000000.0-45000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan13.715.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value-257000000.0-210000000.0-265000000.0-240000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan86.085.00.00.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

us-gaap:DebtSecurities, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value35.00.350.330.330.33
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0100.0100.0

us-gaap:DebtSecurities, us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value11.00.120.130.120.11
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage31.434.339.436.433.3

us-gaap:DebtSecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value43.00.410.410.380.38
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage122.9117.1124.2115.2115.2

us-gaap:EquitySecurities, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value65.00.650.670.670.67
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage185.7185.7203.0203.0203.0

us-gaap:EquitySecurities, us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value12.00.120.130.120.11
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage34.334.339.436.433.3

us-gaap:EquitySecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value57.00.590.590.620.62
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage162.9168.6178.8187.9187.9

us-gaap:OtherContract, us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value77.00.760.740.760.78
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage220.0217.1224.2230.3236.4

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage285.7285.7303.0303.0303.0

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage285.7285.7303.0303.0303.0

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage285.7285.7303.0303.0303.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:DebtSecurities, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value33.00.360.350.320.32
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0100.0

us-gaap:DebtSecurities, us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.00.070.10.060.07
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations18.219.428.618.821.9

us-gaap:DebtSecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value40.00.390.420.370.4
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations121.2108.3120.0115.6125.0

us-gaap:EquitySecurities, us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value67.00.640.650.680.68
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations203.0177.8185.7212.5212.5

us-gaap:EquitySecurities, us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value17.00.170.160.180.15
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations51.547.245.756.246.9

us-gaap:EquitySecurities, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value60.00.610.580.630.6
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations181.8169.4165.7196.9187.5

us-gaap:OtherContract, us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value77.00.760.740.760.78
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations233.3211.1211.4237.5243.8

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations303.0277.8285.7312.5312.5

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations303.0277.8285.7312.5312.5

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations303.0277.8285.7312.5312.5

us-gaap:DepositAssets

us-gaap:DepositAssets


Deposit
Period End2021-06-302021-03-312020-12-31
Value418.06.0
Percentage of DepositAssets100.0100.0100.0

us-gaap:DerivativeAssetsNoncurrent

us-gaap:DerivativeAssetsNoncurrent


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value3415122410.05.0134.03.04.02.01.00.00.02.02.05.02.05.02.00.00.01.02.01.02.05.03.01.0
Percentage of DerivativeAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeCollateralRightToReclaimCash us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeCollateralRightToReclaimCash

us-gaap:CreditRiskContract


Derivative
Period End2020-12-31
Value1.0
Percentage of DerivativeCollateralRightToReclaimCash100.0

us-gaap:DerivativeInstrumentsAndHedgesLiabilities us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeInstrumentsAndHedgesLiabilities

us-gaap:LiabilitiesTotal


Derivative
Period End2021-03-312020-09-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value1.02.03.02.0727188116122130136143147136115143111
Percentage of DerivativeInstrumentsAndHedgesLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesCurrent

us-gaap:DerivativeLiabilitiesCurrent


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value552014164032232640325542516759434659446681142130115101107106443252498910391127147193242216196163183188128
Percentage of DerivativeLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeLiabilitiesNoncurrent

us-gaap:DerivativeLiabilitiesNoncurrent


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value69118136138145129108100767810112413614415115015815612516317116116118418717612278831261417178787390120173172147143167188127
Percentage of DerivativeLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue


Derivative
Period End2021-06-302021-03-312020-09-30
Value89128150
Percentage of DerivativeNetLiabilityPositionAggregateFairValue100.0100.0100.0

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue us-gaap:DerivativeInstrumentRisk

us-gaap:CreditRiskContract


Derivative
Period End2020-12-31
Value148
Percentage of DerivativeNetLiabilityPositionAggregateFairValue0.0

us-gaap:DividendsPayableCurrentAndNoncurrent

us-gaap:DividendsPayableCurrentAndNoncurrent


Dividends
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value383634313029282828272223232322222221202121212121212120
Percentage of DividendsPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value51486763634874635842665254396051524152454542514443395150423846443936464439384436
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2020-12-31
Value13
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0

us-gaap:EnergyRelatedInventory

us-gaap:EnergyRelatedInventory


Energy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value7467238610997409110181317685802670827732828782399410195408485642472727740788081346961562224
Percentage of EnergyRelatedInventory100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2020-12-312019-12-312019-09-302019-06-30
Value145151153154
Percentage of FinanceLeaseLiability100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1616161616161617170.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1271281291311321331351361370.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2020-12-31
Value295
Percentage of FinanceLeaseLiabilityPaymentsDue100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2020-12-31
Value222
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-31
Value16
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2020-12-31
Value13
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2020-12-31
Value14
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2020-12-31
Value14
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2020-12-31
Value16
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2020-12-31
Value150
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2020-12-312019-12-31
Value145150
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FinancialInstrumentsOwnedAtFairValue

us-gaap:FinancialInstrumentsOwnedAtFairValue


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value131312131313131211127.06.0272625232322235665685754521061031055369
Percentage of FinancialInstrumentsOwnedAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrumentsOwnedAtFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value20942732453081843162999128188447113121110.08.07.08.09.010.010.010.010.012131314121212141212121314192623
Percentage of FinancialInstrumentsOwnedAtFairValue153.8723.12275.01884.62369.2138.5330.8133.3263.6825.01828.63133.3163.0273.152.052.247.845.534.812.512.313.217.518.519.29.411.70.00.00.011.40.00.00.022.60.00.00.020.30.00.00.0

us-gaap:FairValueInputsLevel2


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1657764958054554346594539141719192126392634374744419490889797928036433939425955413847
Percentage of FinancialInstrumentsOwnedAtFairValue1269.2592.3533.3730.8615.4415.4423.1358.3418.2491.7642.9650.051.965.476.082.691.3118.2169.646.452.354.482.581.578.888.787.40.00.00.087.60.00.00.073.60.00.00.079.70.00.00.0

us-gaap:FairValueInputsLevel3


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value157.05.0123.01.08.02.02.04.03.01.02.00.00.00.02.02.02.00.01.00.00.00.01.02.01.01.03.01.01.00.00.01.02.05.01.01.00.00.01.01.0
Percentage of FinancialInstrumentsOwnedAtFairValue115.453.841.792.323.17.761.516.718.233.342.916.77.40.00.00.08.79.18.70.01.50.00.00.01.91.91.00.00.00.01.00.00.00.03.80.00.00.00.00.00.00.0

us-gaap:FinancialInstrumentsOwnedCorporateDebtAtFairValue

us-gaap:FinancialInstrumentsOwnedCorporateDebtAtFairValue


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value131213141510.09.012121210.0125.06.06.07.08.08.08.09.09.08.08.010.0111111148.07628
Percentage of FinancialInstrumentsOwnedCorporateDebtAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancialInstrumentsOwnedCorporateDebtAtFairValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Financial
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value131213141510.09.012121210.0125.06.06.07.08.08.08.09.09.08.08.010.011111110.010.010.00.08.08.08.00.08.08.09.00.06.05.06.0
Percentage of FinancialInstrumentsOwnedCorporateDebtAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.021.4

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value417403388403397381366350334318302333317303296288277265257260249238227219209200191188182176170167162156151169164158153147143133
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value57
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value25
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value37
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value42
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value51
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2925272725252623232426
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrentAndNoncurrent

us-gaap:InterestPayableCurrentAndNoncurrent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value274329432741253925442743274327402540254025402540254026372336233322332335243524362626
Percentage of InterestPayableCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService

us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService


Jointly
Period End2020-12-31
Value849
Percentage of JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService100.0

us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

por:Colstrip


Jointly
Period End2020-12-31
Value566
Percentage of JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService66.7

por:PeltonRoundButteMember


Jointly
Period End2020-12-31
Value283
Percentage of JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService33.3

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress


Jointly
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1420121214
Percentage of JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress100.0100.0100.0100.0100.0

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

por:Colstrip


Jointly
Period End2020-12-31
Value7.0
Percentage of JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress50.0

por:PeltonRoundButteMember


Jointly
Period End2020-12-31
Value7.0
Percentage of JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress50.0

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation


Jointly
Period End2020-12-31
Value469
Percentage of JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation100.0

us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty

por:Colstrip


Jointly
Period End2020-12-31
Value387
Percentage of JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation82.5

por:PeltonRoundButteMember


Jointly
Period End2020-12-31
Value82
Percentage of JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation17.5

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LettersOfCreditOutstandingAmount


Letters
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-03-312011-12-312010-12-31
Value121548311763302945137104180
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilitiesFairValueDisclosure


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value124138151154185161131126116110156166187211210193204215169229252303291299288283228190200388
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value51149.08.031262623423665405677714049694869931721721301191331272323465096125123182153224319309194178255
Percentage of LiabilitiesFairValueDisclosure41.110.16.05.216.816.119.818.336.232.741.724.129.936.533.820.724.032.128.430.136.956.859.143.541.347.055.70.00.00.026.30.00.00.091.00.00.00.079.60.00.00.0

us-gaap:FairValueInputsLevel3


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value7312414214615413510510374749112613113413915315514612116015913111916916915010199921321406456461884899679149128121
Percentage of LiabilitiesFairValueDisclosure58.989.994.094.883.283.980.281.763.867.358.375.970.163.566.279.376.067.971.669.963.143.240.956.558.753.044.30.00.00.073.70.00.00.09.00.00.00.020.40.00.00.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity


Line
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302015-09-302015-03-312014-12-312013-12-312013-09-30
Value2202202202205005005001355007006051
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity


Line
Period End2021-06-302021-03-312020-12-312020-09-30
Value600600500600
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0

us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtFairValue


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value35123359380835313508318030392754265127732760269426392691282927632748271826932885261724552530256829292901263224082186207419271921192119492059216321932091202819691968
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2020-12-31
Value2819
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2020-12-31
Value160
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-31
Value80
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0

us-gaap:LongtermPollutionControlBondCurrentAndNoncurrent

us-gaap:LongtermPollutionControlBondCurrentAndNoncurrent


Longterm
Period End2020-12-312020-03-112019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value119119119119142142142142148142142152
Percentage of LongtermPollutionControlBondCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:LossContingencyEstimateOfPossibleLoss


Loss
Period End2021-06-302021-03-312020-12-312020-09-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312015-09-302014-12-31
Value17001700170017001700170017001700170017001700170017003.03.0
Percentage of LossContingencyEstimateOfPossibleLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MarginDepositAssets

us-gaap:MarginDepositAssets


Margin
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value439.08.022253516125.015165.07.017114.01.0208.08.0154033202820115.02.0179.036343346536998808368808356
Percentage of MarginDepositAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MoneyMarketFundsAtCarryingValue

us-gaap:MoneyMarketFundsAtCarryingValue


Money
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value131312131313131211127.06.0272625232322212019191817166565591514
Percentage of MoneyMarketFundsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value3.63.5
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent

us-gaap:OperatingLeasesFutureMinimumPaymentsDueCurrent


Operating
Period End2020-12-312019-12-312018-12-31
Value8000000.08000000.04000000.0
Percentage of OperatingLeasesFutureMinimumPaymentsDueCurrent100.0100.0100.0

us-gaap:OtherCommitment us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitment

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value35731067312913193108937313216018320720418919720414622223528328129228427422111692157176
Percentage of OtherCommitment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value118423265162.010.01131164949
Percentage of OtherCommitment337.157.530.289.012.41.510.810.233.321.937.130.6

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value8311513813814512910397625783111
Percentage of OtherCommitment237.1157.5130.2189.0112.498.5110.889.866.778.162.969.4

us-gaap:OtherCommitmentDueAfterFifthYear us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitmentDueAfterFifthYear

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value468710011311193766642415580828491107108947710911380698888562228395758
Percentage of OtherCommitmentDueAfterFifthYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value468710011311193766642415580
Percentage of OtherCommitmentDueAfterFifthYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCommitmentDueInFifthYear us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitmentDueInFifthYear

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value7000000.08000000.09000000.08000000.08000000.08000000.07000000.07000000.06000000.06000000.06000000.08000000.07000000.07000000.07000000.08000000.08000000.08000000.07000000.09000000.07000000.07000000.06000000.09000000.07000000.06000000.05000000.05000000.03000000.05000000.05000000.0
Percentage of OtherCommitmentDueInFifthYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7000000.08000000.09000000.08000000.08000000.08000000.07000000.07000000.06000000.06000000.06000000.07000000.0
Percentage of OtherCommitmentDueInFifthYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.087.5

us-gaap:OtherCommitmentDueInFourthYear us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitmentDueInFourthYear

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.08.08.07.08.08.07.07.07.06.07.011129.010.01211119.01310.010.09.01712128.010.06.01115
Percentage of OtherCommitmentDueInFourthYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves


Other
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.01.00.00.00.00.01.01.01.04.0
Percentage of OtherCommitmentDueInFourthYear50.014.30.00.00.00.014.316.714.336.4

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6.08.08.08.08.08.07.07.06.05.06.07.0
Percentage of OtherCommitmentDueInFourthYear150.0100.0100.0114.3100.0100.0100.0100.085.783.385.763.6

us-gaap:OtherCommitmentDueInNextTwelveMonths us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitmentDueInNextTwelveMonths

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value382518187.05.02.0-1.09.02.032112954531427472623491091202859789910.06.03536
Percentage of OtherCommitmentDueInNextTwelveMonths100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value612827141.07.07.02.0158.02810.0
Percentage of OtherCommitmentDueInNextTwelveMonths160.5112.0150.077.814.3140.0350.0-200.0166.7400.087.590.9

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value233.09.04.06.02.05.0-3.0-6.06.04.01.0
Percentage of OtherCommitmentDueInNextTwelveMonths60.512.050.022.285.740.0250.0300.0-66.7300.012.59.1

us-gaap:OtherCommitmentDueInSecondYear us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitmentDueInSecondYear

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value50111.0343.09.01.016198.02032343628312626144740585810180866338202636
Percentage of OtherCommitmentDueInSecondYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value46125.040135.02.05.0113.01424
Percentage of OtherCommitmentDueInSecondYear92.0109.1500.0117.6433.355.6200.031.257.937.570.075.0

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.01.04.06.016141.0118.05.06.08.0
Percentage of OtherCommitmentDueInSecondYear8.09.1400.017.6533.3155.6100.068.842.162.530.025.0

us-gaap:OtherCommitmentDueInThirdYear us-gaap:DerivativeInstrumentRisk

us-gaap:OtherCommitmentDueInThirdYear

por:UnrealizedGainLossOnDerivatives


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.06.08.03.06.08.06.01310.010.0121819171517171813211619194938362425182326
Percentage of OtherCommitmentDueInThirdYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:NaturalGasReserves


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value9.02.010.02.00.01.04.04.04.06.010.0
Percentage of OtherCommitmentDueInThirdYear225.033.3333.333.30.016.730.840.040.050.055.6

us-gaap:Electricity


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.08.08.07.08.08.07.09.06.06.06.08.0
Percentage of OtherCommitmentDueInThirdYear125.0133.3100.0233.3133.3100.0116.769.260.060.050.044.4

us-gaap:OtherInventorySupplies

us-gaap:OtherInventorySupplies


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value495653525044424138373434
Percentage of OtherInventorySupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherInvestments

us-gaap:OtherInvestments


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value25526112301.00.01201040.00.0
Percentage of OtherInvestments100.0100.0100.0100.0100.00.0100.0100.00.00.0

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value100101101991011021031001011031031061071081061051061061051051061061061051051061051011011021011031031031021021021021019998989796
Percentage of OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:OtherPensionPlansDefinedBenefit


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value7579818180
Percentage of OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent74.376.778.676.476.2

us-gaap:OtherPensionPlansPostretirementOrSupplementalPlansDefinedBenefit


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2624222525
Percentage of OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent25.723.321.423.623.8

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities


Pledged
Period End2021-06-302021-03-312020-12-312020-09-30
Value69756055
Percentage of PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities100.0100.0100.0100.0

us-gaap:PrepaidExpenseCurrent

us-gaap:PrepaidExpenseCurrent


Prepaid
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value576354504843393837
Percentage of PrepaidExpenseCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value3985392938644304423841724095402239513869380337763707363335643514344733813313326932053150309330462984294028992865281527682723269326482602255925432497247124312388235222712144
Percentage of PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value5104724294733763563282582192003463402904303913863462422131947466475455085574784171141926633508377267201140168151129120134121125406
Percentage of PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDistribution

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDistribution


Public
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value413639173838354333433192307529432816270425822472
Percentage of PublicUtilitiesPropertyPlantAndEquipmentDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing


Public
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value443647494600466745973898374229682899285427452269
Percentage of PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value76937616753973717301721768337014695267476887678268406781674166386573646664346340628461606012592058745789567955535324500948804659453244494392435143174288428542554227417941333858
Percentage of PublicUtilitiesPropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value111681107310974112021116311033109281077810684104161069010218102579984103059766967496059747941587438663910584588301825185787277721371447603697569136850695167266663663067166509645864046002
Percentage of PublicUtilitiesPropertyPlantAndEquipmentPlantInService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentTransmission

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentTransmission


Public
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value970848580547521451440417412393372364
Percentage of PublicUtilitiesPropertyPlantAndEquipmentTransmission100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RatioOfIndebtednessToNetCapital1

us-gaap:RatioOfIndebtednessToNetCapital1


Ratio
Period End2021-06-302021-03-312020-12-312020-09-30
Value55.355.256.455.5
Percentage of RatioOfIndebtednessToNetCapital1100.0100.0100.0100.0

us-gaap:RecordedThirdPartyEnvironmentalRecoveriesAmount

us-gaap:RecordedThirdPartyEnvironmentalRecoveriesAmount


Recorded
Period End2020-12-312019-12-312018-12-31
Value5000000.04000000.04000000.0
Percentage of RecordedThirdPartyEnvironmentalRecoveriesAmount100.0100.0100.0

us-gaap:RegulatoryAssets

us-gaap:RegulatoryAssets


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value593500462500
Percentage of RegulatoryAssets100.0100.0100.0100.0

us-gaap:RegulatoryAssets us-gaap:RegulatoryAsset

por:Earningareturn


Regulatory
Period End2020-12-312019-12-312018-12-31
Value876279
Percentage of RegulatoryAssets14.712.417.1

por:OtherRegulatoryAssetsEarningaReturn


Regulatory
Period End2020-12-312019-12-312018-12-31
Value876253
Percentage of RegulatoryAssets14.712.411.5

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value109726759
Percentage of RegulatoryAssets18.414.414.511.8

us-gaap:StormCosts


Regulatory
Period End2021-06-302021-03-31
Value5241
Percentage of RegulatoryAssets0.00.0

us-gaap:RegulatoryAssetsCurrent

us-gaap:RegulatoryAssetsCurrent


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2025238.01221172637216142567262424757366574131129122117125133563855669911496144154197232216208184214221197
Percentage of RegulatoryAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatoryAssetsCurrent us-gaap:RegulatoryAsset

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2025238.0121417141721295.08.010.09.010.0
Percentage of RegulatoryAssetsCurrent100.0100.0100.0100.0100.066.7100.053.845.9100.047.511.914.313.914.527.8

us-gaap:RegulatoryAssetsNoncurrent

us-gaap:RegulatoryAssetsNoncurrent


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value543591569527526513483483380380401426441448438526536532498515525526524547552545494396399448464504519524524490528588594481481512544465
Percentage of RegulatoryAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatoryAssetsNoncurrent us-gaap:RegulatoryAsset

us-gaap:DeferredDerivativeGainLoss


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value351031241141351249596737499123135144151120
Percentage of RegulatoryAssetsNoncurrent6.417.421.821.625.724.219.719.919.219.524.728.930.632.134.524.1

us-gaap:EnvironmentalRestorationCosts


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value98979595949594932525252626250.0
Percentage of RegulatoryAssetsNoncurrent18.016.416.718.017.918.519.519.36.66.66.26.15.95.60.0

us-gaap:LossOnReacquiredDebt


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value24252526272526181920161717181922
Percentage of RegulatoryAssetsNoncurrent4.44.24.44.95.14.95.43.75.05.34.04.03.94.04.34.4

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value105918592666155584642385554475035
Percentage of RegulatoryAssetsNoncurrent19.315.414.917.512.511.911.412.012.111.19.512.912.210.511.47.0

us-gaap:PensionAndOtherPostretirementPlansCosts


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value229234240200204208213218217219222205209214218235
Percentage of RegulatoryAssetsNoncurrent42.239.642.238.038.840.544.145.157.157.655.448.147.447.849.847.2

us-gaap:RegulatoryLiabilities

us-gaap:RegulatoryLiabilities


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value1392142113911319
Percentage of RegulatoryLiabilities100.0100.0100.0100.0

us-gaap:RegulatoryLiabilities us-gaap:RegulatoryLiability

por:Earningareturn


Regulatory
Period End2020-12-31
Value1338
Percentage of RegulatoryLiabilities96.1

us-gaap:AssetRetirementObligationCosts


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value37545352
Percentage of RegulatoryLiabilities2.73.83.83.9

us-gaap:DeferredIncomeTaxCharges


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value239260267277
Percentage of RegulatoryLiabilities17.218.319.221.0

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value82634654
Percentage of RegulatoryLiabilities5.94.43.34.1

us-gaap:RemovalCosts


Regulatory
Period End2020-12-312019-12-312018-12-312017-12-31
Value10161021979933
Percentage of RegulatoryLiabilities73.071.970.470.7

us-gaap:RegulatoryLiabilityCurrent

us-gaap:RegulatoryLiabilityCurrent


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value9142236540404440374136182228312034425149565755455359604.05.02.01.04.07.011126.01219252527
Percentage of RegulatoryLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatoryLiabilityCurrent us-gaap:RegulatoryLiability

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value21125.020282321171316121720262833
Percentage of RegulatoryLiabilityCurrent23.128.621.730.870.057.547.742.535.139.033.394.490.992.990.364.7

us-gaap:RegulatoryClauseRevenuesUnderRecovered


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value703018392.0
Percentage of RegulatoryLiabilityCurrent76.971.478.360.04.5

us-gaap:RevenueSubjectToRefund


Regulatory
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6.012172323222323
Percentage of RegulatoryLiabilityCurrent9.230.042.552.357.559.556.163.9

us-gaap:RegulatoryLiabilityNoncurrent

us-gaap:RegulatoryLiabilityNoncurrent


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1354135313691375136213901377138013651356135513791348132312881002989973958958949938928939923911906940913899865852796782765760755742720712692668657654
Percentage of RegulatoryLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatoryLiabilityNoncurrent us-gaap:RegulatoryLiability

us-gaap:AssetRetirementObligationCosts


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value39383755555454545453535353535249
Percentage of RegulatoryLiabilityNoncurrent2.92.82.74.04.03.93.93.94.03.93.93.83.94.04.05.1

us-gaap:DeferredIncomeTaxCharges


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value2192222392462562592602622652662672712722812770.0
Percentage of RegulatoryLiabilityNoncurrent16.216.417.517.918.818.618.919.019.419.619.719.720.221.221.50.0

us-gaap:OtherRegulatoryAssetsLiabilities


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value68737769554442473330345443452622
Percentage of RegulatoryLiabilityNoncurrent5.05.45.65.04.03.23.13.42.42.22.53.93.23.42.02.3

us-gaap:RemovalCosts


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value10281020101610059961033102110111001991979964955944933887
Percentage of RegulatoryLiabilityNoncurrent75.975.474.273.173.174.374.173.373.373.172.369.970.871.472.492.6

us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided

us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided


Remaining
Period End2020-12-312019-12-312018-12-31
Value506438383
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided100.0100.0100.0

us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided us-gaap:RegulatoryAsset

por:Trojandecommissioning


Remaining
Period End2020-12-312019-12-312018-12-31
Value889125
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided17.420.86.5

us-gaap:DeferredDerivativeGainLoss


Remaining
Period End2020-12-312019-12-312018-12-31
Value12495131
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided24.521.734.2

us-gaap:EnvironmentalRestorationCosts


Remaining
Period End2020-12-312019-12-312018-12-31
Value95940.0
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided18.821.50.0

us-gaap:LossOnReacquiredDebt


Remaining
Period End2020-12-312019-12-312018-12-31
Value252616
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided4.95.94.2

us-gaap:OtherRegulatoryAssetsLiabilities


Remaining
Period End2020-12-312019-12-312018-12-31
Value2210.014
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided4.32.33.7

us-gaap:PensionAndOtherPostretirementPlansCosts


Remaining
Period End2020-12-312019-12-312018-12-31
Value240213222
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided47.448.658.0

us-gaap:RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided us-gaap:RegulatoryLiability

us-gaap:DeferredDerivativeGainLoss


Remaining
Period End2020-12-31
Value18
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided3.6

us-gaap:OtherRegulatoryAssetsLiabilities


Remaining
Period End2020-12-312019-12-312018-12-31
Value36167.0
Percentage of RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided7.13.71.8

us-gaap:SecuredDebt

us-gaap:SecuredDebt


Secured
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value29402510239023152090
Percentage of SecuredDebt100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-03-312013-12-312013-03-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value478400.0463390.0428910.0399380.0458790.0442990.0463890.0363000.0431090.0431000.0440560.0491400.0465430.0422260.0360380.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value48.043.5238.4337.9834.6832.8428.9626.3122.5418.5417.8819.8225.04
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized


Share
Period End2020-12-31
Value4687500.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant


Share
Period End2020-12-31
Value2737200.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0

us-gaap:ShortTermBorrowings

us-gaap:ShortTermBorrowings


Short
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-04-092020-03-312019-12-312019-06-302018-12-312016-09-302016-06-302016-03-312015-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value200200150225150150200.0170.00.00.00.06.00.00.00.0170.00.00.0300.00.00.0190.0
Percentage of ShortTermBorrowings100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.0

us-gaap:ShortTermBorrowings us-gaap:CreditFacility

us-gaap:LetterOfCredit


Short
Period End2020-09-302020-06-302020-03-312019-06-30
Value750.0200.0
Percentage of ShortTermBorrowings33.30.0100.00.0

us-gaap:ShortTermDebtWeightedAverageInterestRate

us-gaap:ShortTermDebtWeightedAverageInterestRate


Short
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1.52.6000.0070.00600.0040.0040.0040.0040.013
Percentage of ShortTermDebtWeightedAverageInterestRate100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:USGovernmentSecuritiesAtCarryingValue

us-gaap:USGovernmentSecuritiesAtCarryingValue


U
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-31
Value17192020192224222322252410.010.0111110.011121213141413131414141512
Percentage of USGovernmentSecuritiesAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:USGovernmentSecuritiesAtCarryingValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


U
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9.0129.08.07.07.08.07.010.08.07.08.03.03.04.03.02.02.02.02.04.05.06.05.04.04.07.08.08.08.06.06.07.09.07.05.04.04.03.06.08.03.0
Percentage of USGovernmentSecuritiesAtCarryingValue52.963.245.040.036.831.833.331.843.536.428.033.330.030.036.427.320.018.216.716.730.835.742.938.530.828.650.00.00.00.042.90.00.00.046.70.00.00.025.00.00.00.0

us-gaap:FairValueInputsLevel2


U
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8.07.0111212151615131418167.07.07.08.08.09.010.010.09.09.08.08.09.010.07.06.06.06.08.09.08.07.08.010.0119.09.00.00.00.0
Percentage of USGovernmentSecuritiesAtCarryingValue47.136.855.060.063.268.266.768.256.563.672.066.770.070.063.672.780.081.883.383.369.264.357.161.569.271.450.00.00.00.057.10.00.00.053.30.00.00.075.00.00.00.0

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnamortizedDebtIssuanceExpense


Unamortized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1212131213111110.010.010.010.09.010.010.010.09.011111111121211
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnbilledReceivablesCurrent


Unbilled
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value9986977974788673727196738677106716871107607077957287759373747710467737697757079101726893
Percentage of UnbilledReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value17128.0151.01.02.05.05.07.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1.01.01.02.01.09.02.02.02.06.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary5.98.312.513.3100.0900.0100.040.040.085.7

us-gaap:CoalSupplyAgreements


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value27270.00.00.00.05.04.00.00.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary158.8225.00.00.00.00.0250.080.00.00.0

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value34630624123226924220115764111
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary2035.32550.03012.51546.726900.024200.010050.03140.01280.01585.7

us-gaap:ElectricTransmission


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.09.09.04.04.04.05.02.00.019
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary52.975.0112.526.7400.0400.0250.040.00.0271.4

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2492151931872391901431263657
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary1464.71791.72412.51246.723900.019000.07150.02520.0720.0814.3

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value434230242432368.010.012
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary252.9350.0375.0160.02400.03200.01800.0160.0200.0171.4

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2116129.04.06.08.08.08.07.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value237393143191176852427108158
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary1128.62456.21191.72122.24400.01416.73025.08875.01012.5828.6

us-gaap:CoalSupplyAgreements


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value27276.015171423212225
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary128.6168.850.0166.7425.0233.3287.5262.5275.0357.1

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6016883834284784345451077350298
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary2861.94300.03191.74755.611950.07233.36812.513462.54375.04257.1

us-gaap:ElectricTransmission


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.00.01.06.07.02627222121
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary42.90.08.366.7175.0433.3337.5275.0262.5300.0

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value250193167156221226179240154129
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary1190.51206.21391.71733.35525.03766.72237.53000.01925.01842.9

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value57595451536756655549
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary271.4368.8450.0566.71325.01116.7700.0812.5687.5700.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value17138.0160.01.04.05.07.08.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1.04.01.02.09.02.02.02.09.010.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary5.930.812.512.50.0200.050.040.0128.6125.0

us-gaap:CoalSupplyAgreements


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value27270.00.00.05.05.06.00.00.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary158.8207.70.00.00.0500.0125.0120.00.00.0

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value375310243247296207211160121144
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary2205.92384.63037.51543.80.020700.05275.03200.01728.61800.0

us-gaap:ElectricTransmission


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.09.09.04.04.05.06.02.01920
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary52.969.2112.525.00.0500.0150.040.0271.4250.0

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2782191942002561501431256476
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary1635.31684.62425.01250.00.015000.03575.02500.0914.3950.0

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4338312527374010.01220
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary252.9292.3387.5156.20.03700.01000.0200.0171.4250.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value191511174.05.07.08.08.08.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value331309.02.08.02.02111310.018
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary173.7866.781.811.8200.040.0300.01412.5125.0225.0

us-gaap:CoalSupplyAgreements


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value27270.05.09.011146.09.019
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary142.1180.00.029.4225.0220.0200.075.0112.5237.5

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value387415252220223279283339166175
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary2036.82766.72290.91294.15575.05580.04042.94237.52075.02187.5

us-gaap:ElectricTransmission


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.09.00.05.06.06.026232121
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary47.460.00.029.4150.0120.0371.4287.5262.5262.5

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2571891901561572041671598377
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary1352.61260.01727.3917.63925.04080.02385.71987.51037.5962.5

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value42454235394137212622
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary221.1300.0381.8205.9975.0820.0528.6262.5325.0275.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value18139.0161.05.05.07.08.08.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value20141.010.02.02.02.0401110.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary111.1107.711.162.5200.040.040.0571.4137.5125.0

us-gaap:CoalSupplyAgreements


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value27270.00.05.05.0116.00.09.0
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary150.0207.70.00.0500.0100.0220.085.70.0112.5

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value395323236259226212216247151155
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary2194.42484.62622.21618.822600.04240.04320.03528.61887.51937.5

us-gaap:ElectricTransmission


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.09.09.04.05.06.06.0222021
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary50.069.2100.025.0500.0120.0120.0314.3250.0262.5

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2842201862011811471401508276
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary1577.81692.32066.71256.218100.02940.02800.02142.91025.0950.0

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value37403128323840122122
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary205.6307.7344.4175.03200.0760.0800.0171.4262.5275.0

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value13111983158213049666168
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value347598213265256127343934185175
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount264.9502.5256.6167.71219.0423.3700.01415.2303.3257.4

us-gaap:CoalSupplyAgreements


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1351626.020313558483153
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount103.1136.17.212.7147.6116.7118.472.750.877.9

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5662511435273410348326822842296615811574
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount4322.14297.54249.42158.216585.78940.05800.04493.92591.82314.7

us-gaap:ElectricTransmission


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value454546313863907281102
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount34.437.855.419.6181.0210.0183.7109.1132.8150.0

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value42043363278326332804176916051483859796
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount3209.22826.13353.01666.513352.45896.73275.52247.01408.21170.6

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value800827396303333436453122130136
Percentage of UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount610.7695.0477.1191.81585.71453.3924.5184.8213.1200.0

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears

por:PublicUtilityDistricts


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value39503585111223332530
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalAdditions


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value55565858602774677273
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears141.0112.0165.768.2545.5225.0321.7203.0288.0243.3

us-gaap:Commitments


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3558307221722024199113081386986729691
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears9123.16144.06205.72381.218100.010900.06026.12987.92916.02303.3

us-gaap:LongTermContractForPurchaseOfElectricPowerDomain


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value28862327185317331750852833683440381
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears7400.04654.05294.32038.815909.17100.03621.72069.71760.01270.0

us-gaap:PublicUtilitiesInventoryFuel


Unrecorded
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5786032081401582212446.06.011
Percentage of UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears1482.11206.0594.3164.71436.41841.71060.918.224.036.7

Line plots across dimensions of each concept


us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
us-gaap:RetirementPlanType
(None,)
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrentus-gaap: Retirement Plan Type
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components