IDA


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued
dei:LegalEntity

us-gaap:CommonStockSharesAuthorized

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeTaxExpenseBenefit
dei:LegalEntity

us-gaap:IncomeTaxesPaidNet
dei:LegalEntity

us-gaap:InterestExpense
dei:LegalEntity

us-gaap:InterestExpenseDebt
dei:LegalEntity

us-gaap:InterestPaidNet
dei:LegalEntity

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss
dei:LegalEntity

us-gaap:OtherNonoperatingIncomeExpense
dei:LegalEntity

us-gaap:ProfitLoss
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:RegulatedAndUnregulatedOperatingRevenue
us-gaap:StatementBusinessSegments

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:MajorCustomers, us-gaap:ProductOrService
us-gaap:ProductOrService

us-gaap:UnregulatedOperatingRevenue

us-gaap:Assets
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:StatementBusinessSegments

us-gaap:LiabilitiesAndStockholdersEquity
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:AssetsCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:ShortTermInvestments

us-gaap:AccountsReceivableNetCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ReceivablesNetCurrent

us-gaap:OtherAssetsCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:AssetsNoncurrent

us-gaap:ConstructionInProgressGross
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity

us-gaap:LongTermInvestments
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:OtherAssetsNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:AccountsPayableCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:AccruedIncomeTaxesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent
dei:LegalEntity

us-gaap:LiabilitiesCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:OtherLiabilitiesCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:TaxesPayableCurrent
dei:LegalEntity

us-gaap:LiabilitiesNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebt

us-gaap:LongTermDebtNoncurrent
dei:LegalEntity
us-gaap:DebtInstrument
us-gaap:SecuredLongTermDebt

us-gaap:DeferredIncomeTaxLiabilitiesNet
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
dei:LegalEntity
us-gaap:RetirementPlanType

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:CommonStockValue
dei:LegalEntity
us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity
us-gaap:StatementEquityComponents

us-gaap:MinorityInterest

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
dei:LegalEntity

us-gaap:DepreciationDepletionAndAmortization
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsReceivable
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetIncomeLoss
us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
dei:LegalEntity
us-gaap:StatementBusinessSegments

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity

us-gaap:PaymentsOfDividendsCommonStock
dei:LegalEntity
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument

us-gaap:EffectiveIncomeTaxRateContinuingOperations
dei:LegalEntity

us-gaap:DeferredTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsNet
dei:LegalEntity
us-gaap:RetirementPlanType
ida:DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments
us-gaap:RetirementPlanType
ida:DefinedBenefitPlanRegulatedIPUCAuthorizedrecoveredpensioncost
us-gaap:RetirementPlanType
ida:DefinedBenefitPlanRegulatoryAdjustmentsDeferred
dei:LegalEntity
ida:DistributionFromReclamationTrustFund

ida:EnergyEfficiencyPrograms
dei:LegalEntity
us-gaap:RetirementPlanType
ida:NetServiceCostDefinedBenefitPlan
us-gaap:RetirementPlanType
ida:Otherexpensedefinedbenefitplanbenefitcost

ida:Powercostadjustmentexpensedeferral
dei:LegalEntity
dei:LegalEntity, us-gaap:DebtInstrument
ida:PremiumonRepaymentonDebt

ida:Premiumonissuanceoflonggermdebt
dei:LegalEntity

ida:TreasuryStockIssued

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:CapitalExpendituresIncurredButNotYetPaid
dei:LegalEntity

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DeferredIncomeTaxesAndTaxCredits
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:RetirementPlanType, us-gaap:SubsequentEventType
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:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainOnDerivative
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeLossOnDerivative

us-gaap:DividendsCommonStockCash

us-gaap:EquityMethodInvestmentDividendsOrDistributions
dei:LegalEntity

us-gaap:IncomeLossFromEquityMethodInvestments
dei:LegalEntity

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
dei:LegalEntity

us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
dei:LegalEntity

us-gaap:IncomeTaxReconciliationOtherAdjustments
dei:LegalEntity

us-gaap:IncomeTaxReconciliationTaxCreditsInvestment
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherCurrentAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities
dei:LegalEntity

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestCostsCapitalizedAdjustment
dei:LegalEntity

us-gaap:InterestExpenseOther
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherGeneralExpense

us-gaap:OtherNoncashIncomeExpense
dei:LegalEntity

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
dei:LegalEntity

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
dei:LegalEntity
us-gaap:PaymentsToAcquireAvailableForSaleSecurities

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity
dei:LegalEntity

us-gaap:PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:PensionAndOtherPostretirementBenefitContributions
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementBenefitExpense
dei:LegalEntity

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity
dei:LegalEntity

us-gaap:ProceedsFromSaleOfProductiveAssets
dei:LegalEntity

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions
dei:LegalEntity

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
dei:LegalEntity

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents

us-gaap:RegulatedOperatingRevenueElectricNonNuclear
dei:LegalEntity

us-gaap:RegulatedOperatingRevenueOther
us-gaap:ProductOrService
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:RepaymentsOfDebt

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued

us-gaap:StockholdersEquityOther

us-gaap:TaxesExcludingIncomeAndExciseTaxes
dei:LegalEntity

us-gaap:UtilitiesOperatingExpense
dei:LegalEntity

us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization
dei:LegalEntity

us-gaap:UtilitiesOperatingExpenseFuelUsed
dei:LegalEntity

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations
dei:LegalEntity

us-gaap:UtilitiesOperatingExpensePurchasedPower
dei:LegalEntity
dei:LegalEntity
us-gaap:VariableInterestEntityOwnershipPercentage

dei:EntityCommonStockSharesOutstanding

ida:AllowanceForUncollectibleAccountsAsAPercentageOfCustomerReceivables

ida:Allowanceforuncollectibleaccountsasapercentageofcustomerreceivables
ida:RateCases, ida:RegulatoryJurisdiction
ida:Annualfixedcostadjustmentmechanismdeferral
ida:RateCases, ida:RegulatoryJurisdiction, us-gaap:SubsequentEventType
dei:LegalEntity
ida:BondsIssuableMaximumAmountEnding
dei:LegalEntity
ida:CapitalStockIssuanceCosts
dei:LegalEntity
ida:Debtinstrumentinterestratelimit
dei:LegalEntity, us-gaap:SubsequentEventType
ida:DebtinstrumentunusedborrowingcapacityRegulatoryAuthorityAmount

ida:DeferredTaxLiabilitiesPrepaidPensionCost
dei:LegalEntity
us-gaap:StatementScenario, us-gaap:RetirementPlanType
ida:DefinedBenefitPlanMinimumFundingRequirementforNextFiscalYear
us-gaap:RetirementPlanType
ida:DefinedBeneiftPlanAccumulatedOtherComprehensiveIncomeBeforeTaxBeforeRegulatoryAsset
dei:LegalEntity
ida:DividendDistributionRestrictionAmount
us-gaap:ConsolidatedEntities
dei:LegalEntity
ida:EquityCapitalRatio
dei:LegalEntity
ida:GuarantorObligationsTotalReclamationTrustFund
dei:LegalEntity
ida:IncreaseofLongtermPurchaseObligationsAmount
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
dei:LegalEntity
ida:IndentureUnusedBorrowingCapacityAmount
dei:LegalEntity
ida:IndentureUnusedBorrowingCapacityavailable
ida:RateCases
ida:InvestmentTaxCreditsMaximuminRateCase
dei:LegalEntity
ida:LetterOfCreditMaximumBorrowingCapacity
ida:RateCases
ida:LoadChangeAdjustmentRateOrOpenAccessSameTimeDraftRates
us-gaap:ConsolidatedEntities
ida:MaximumLeverageRatioRequirement
dei:LegalEntity, ida:CogenerationAndSmallPowerProduction
ida:NameplateCapacity
dei:LegalEntity, ida:CogenerationAndSmallPowerProduction, us-gaap:StatementScenario, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:JointlyOwnedUtilityPlant
ida:RateCases
ida:NetAnnualTransmissionRevenueRequirement
dei:LegalEntity
ida:PercentOfOperatingRevenuesRequiredToBeSpentOrAppropriated
us-gaap:StatementClassOfStock
ida:PercentOfTargetAwardMaximum
ida:RateCases
ida:PercentageToBeSharedWithCustomers
ida:RateCases
ida:PercentageToBeSharedWithEntity
us-gaap:RetirementPlanType
ida:PostretirementBenefitDentalTrendRate
us-gaap:RetirementPlanType, us-gaap:StatementScenario
us-gaap:StatementScenario, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
ida:PostretirementBenefitMedicalTrendRate
dei:LegalEntity
ida:Principalamountofdebtsecuritiesandfirstmortgagebondsauthorized
dei:LegalEntity
ida:RatioOfTotalCapitalToTotalCapitalAndLongTermDebt
dei:LegalEntity
ida:RegulatoryAuthorityForMaximumShortTermIndebtedness
ida:RateCaseMatter, ida:RegulatoryJurisdiction, us-gaap:BalanceSheetLocation
ida:RequestedDeferralOfCosts
ida:RateCaseMatter, ida:RegulatoryJurisdiction, us-gaap:IncomeStatementLocation
dei:LegalEntity
ida:VariableInterestEntitiesOwnershipPercentageMaximum
dei:LegalEntity
ida:VariableInterestEntitiesOwnershipPercentageMinimum
dei:LegalEntity
ida:VariableInterestEntityConsolidatedIntercompanyLongTermDebt
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:AccountsPayableRelatedPartiesCurrentAndNoncurrent

us-gaap:AdditionalCollateralAggregateFairValue

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
dei:LegalEntity

us-gaap:AllowanceForDoubtfulOtherReceivablesCurrent
dei:LegalEntity

us-gaap:AssetRetirementObligation
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:AssetsNet

us-gaap:AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment
dei:LegalEntity
dei:LegalEntity
us-gaap:AvailableForSaleSecurities
dei:LegalEntity
us-gaap:CapitalizationLongtermDebtAndEquity

us-gaap:CashAndCashEquivalentsFairValueDisclosure
dei:LegalEntity
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CollateralAlreadyPostedAggregateFairValue
dei:LegalEntity, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByMeasurementBasis
dei:LegalEntity
us-gaap:DebtInstrumentInterestRateEffectivePercentage
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:DebtInstrumentRepurchasedFaceAmount
dei:LegalEntity
us-gaap:DeferredCompensationPlanAssets
us-gaap:RetirementPlanType
us-gaap:ConsolidatedEntities
us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsEquityMethodInvestments
dei:LegalEntity

us-gaap:DeferredTaxAssetsOther
dei:LegalEntity

us-gaap:DeferredTaxAssetsRegulatoryAssetsAndLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseOther
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates

us-gaap:DeferredTaxLiabilitiesOther
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
ida:CompensationIncreaseAssumptions, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
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:SubsequentEventType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
us-gaap:StatementScenario, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:StatementScenario, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
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:DerivativeAssetFairValueGrossLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeAssets
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BalanceSheetLocation
us-gaap:DerivativeCollateralObligationToReturnCash

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeLiabilityFairValueGrossAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue
us-gaap:Energy, us-gaap:Position
us-gaap:DerivativeNonmonetaryNotionalAmount
us-gaap:Energy, us-gaap:Position
us-gaap:DerivativeNumberOfInstrumentsHeld
dei:LegalEntity
us-gaap:DueToRelatedPartiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementClassOfStock
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:ConsolidatedEntities, us-gaap:StatementClassOfStock

us-gaap:EnergyRelatedInventoryOtherFossilFuel
dei:LegalEntity

us-gaap:EquityMethodInvestments
dei:LegalEntity
dei:LegalEntity
us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:IncomeTaxesReceivable
dei:LegalEntity

us-gaap:InterestPayableCurrent
dei:LegalEntity

us-gaap:Investments
dei:LegalEntity
dei:LegalEntity
us-gaap:InvestmentsAndOtherNoncurrentAssets
us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
dei:LegalEntity
us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare
us-gaap:JointlyOwnedUtilityPlant

us-gaap:LiabilitiesOtherThanLongtermDebtNoncurrent
dei:LegalEntity

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount
dei:LegalEntity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:ConsolidatedEntities
us-gaap:NotesPayableRelatedPartiesCurrentAndNoncurrent
us-gaap:FairValueByMeasurementBasis
us-gaap:NotesReceivableFairValueDisclosure

us-gaap:OtherInventorySupplies
dei:LegalEntity

us-gaap:OtherReceivables
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PlantHeldForFutureUseAmount
dei:LegalEntity

us-gaap:PrepaidExpenseCurrent
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentOther
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentOtherNet

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
dei:LegalEntity
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDistribution

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet
dei:LegalEntity
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentTransmission
dei:LegalEntity, ida:ContractTerm, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:PurchaseObligation
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
us-gaap:PurchaseObligationDueAfterFifthYear
dei:LegalEntity, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
us-gaap:PurchaseObligationDueInFifthYear
dei:LegalEntity, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
us-gaap:PurchaseObligationDueInFourthYear
dei:LegalEntity, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
us-gaap:PurchaseObligationDueInNextTwelveMonths
dei:LegalEntity, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
us-gaap:PurchaseObligationDueInSecondYear
dei:LegalEntity, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower
us-gaap:PurchaseObligationDueInThirdYear
dei:LegalEntity, us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
dei:LegalEntity
us-gaap:RatioOfIndebtednessToNetCapital1
us-gaap:ConsolidatedEntities

us-gaap:RealEstateInvestmentsUnconsolidatedRealEstateAndOtherJointVentures

us-gaap:RegulatoryAssets
ida:RegulatoryAssetsLiabilitiesEarningNotEarningReturn
ida:RegulatoryAssetsLiabilitiesEarningNotEarningReturn, us-gaap:RegulatoryAsset
ida:RegulatoryJurisdiction, us-gaap:RegulatoryAsset
us-gaap:RegulatoryAsset
us-gaap:RetirementPlanType

us-gaap:RegulatoryAssetsCurrent
dei:LegalEntity

us-gaap:RegulatoryAssetsNoncurrent
dei:LegalEntity

us-gaap:RegulatoryLiabilities
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:RegulatoryLiability
ida:RegulatoryAssetsLiabilitiesEarningNotEarningReturn
ida:RegulatoryAssetsLiabilitiesEarningNotEarningReturn, us-gaap:RegulatoryLiability
us-gaap:RegulatoryLiability

us-gaap:RegulatoryLiabilityCurrent
dei:LegalEntity

us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity

us-gaap:SecuredDebt
us-gaap:DebtInstrument
dei:LegalEntity, us-gaap:StatementClassOfStock
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:ConsolidatedEntities, us-gaap:StatementClassOfStock
us-gaap:ConsolidatedEntities, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnbilledReceivablesCurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance
us-gaap:ValuationAllowancesAndReservesType

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Short Term Investments
Assets
Derivative Assets
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
Liabilities
Derivative Liabilities
Current Liabilities
Other Liabilities Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Accounts Receivable
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Issued
NonoperatingIncomeExpense
Nonoperating Income Expense
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ████▇▇█▇▇▇▇▇▇▆▆▆▆▆▆▆▆▅▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▃▂▂▁▁871.111868.944869.235867.491866.127864.85868.307866.131864.266863.425863.593861.515859.652857.533857.207855.043853.604852.663851.833850.698849.609848.361849.112848.003846.914845.712845.402843.163841.718840.472839.75838.575836.56835.418834.922835.742834.547831.296828.389820.271816.891809.974807.842NANANA
us-gaap:CommonStockSharesIssued ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁50.51638450.51547850.46250.46142750.46039850.45393650.42001750.4250.4250.4250.42001750.4250.4250.4250.42001750.42001750420.01750.42001750.42001750.42001750.42001750.42001750.35205150.35205150.35205150.34791350.30870250.30751250.30751250.30751250.23346350.23346350.23346350.23275850.15848650.15698650.15588650.0922649.96417249.77404249.71532749.55575649.419452NANANA
us-gaap:CommonStockSharesAuthorized ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120000.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0120.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁50.62250.58NA50.57650.56750.527NA50.55850.50750.518NA50.56550.48150.463NA50.42150.40750.397NA50.39350.35550.337NA50.32450.25850.26NA50.2250.15650.175NA50.15350.10850.064NA50.0849.98449.905NA49.62249.51649.356NA48.25248.04847.885
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁50.60950.567NA50.54150.55150.517NA50.49950.49950.509NA50.43450.43550.425NA50.36250.36350.356NA50.29650.30250.299NA50.21950.22250.22NA50.12950.13350.131NA50.05650.05650.039NA49.96649.92749.86NA49.5249.4249.29NA48.08647.88847.773
us-gaap:EarningsPerShareBasic ▅▄▃█▅▃▄▇▄▃▂█▅▃▃▇▄▃▃▆▄▂▃▆▅▂▃▆▄▂▃▅▄▃▂▇▃▂▁█▂▂▂▅▃▂1.380.890.74000000000000022.021.190.740.93000000000000021.781.050.850.522.031.240.720.76999999999999961.80.990.660.66000000000000011.651.120.510.63999999999999971.461.320.470.691.730.890.550.63000000000000031.430.910.670.330000000000000071.840.710.50.180000000000000162.160.420.60.410000000000000141.40.820.34
us-gaap:EarningsPerShareDiluted ▅▄▃█▅▃▄▇▄▃▂█▅▃▃▇▄▃▃▆▄▂▃▆▅▂▃▆▄▂▃▅▄▃▂▇▃▂▁█▂▃▂▅▃▂1.380.890.74000000000000022.021.190.740.93000000000000021.781.050.840.522.021.230.720.771.80.990.660.66000000000000011.651.120.510.62999999999999991.461.310.470.691.730.890.550.63000000000000031.430.910.670.32000000000000031.840.710.50.169999999999999932.160.420.60.400000000000000361.390.820.34
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Net profit Margin us-gaap:StatementBusinessSegments us-gaap:AllOtherSegmentsNANANA1.0911.10.52NA1.2921.1210.548NA1.4461.2530.646NA1.6691.2380.58NA0.5711.0250.39NA0.6481.0070.621NA1.491.1280.399NA0.8031.0920.56NA1.2621.1540.6570.9521.5851.0590.4320.6230.8890.963NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _▆▄▄█▅▄▄▇▅▄▃▇▅▄▄█▅▄▄▆▅▃▃▇▆▃▂▇▅▃▃▇▅▄▂▇▄▃▁▅▃▄▃92.40461.10953.742124.7779.4451.5754.27114.15671.7858.11948.266115.23382.83550.58953.513120.91479.1150.81553.07797.92876.95343.81848.551104.66485.97642.90427.586105.72271.80948.57837.343115.55979.40659.43330.114111.34358.842.3448.46571.39334.29950.09139.025NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▅▇▃▁▃▇▅▃▃█▄▄█▆2.142.711.7381.3531.7012.6242.2451.8771.832.8372.0511.92.872.541NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▆▄▂█▅▃▃▇▄▄▃█▅▃▃▇▄▃▃▆▅▂▃▆▅▂▂▇▄▂▂▆▄▃▁▇▃▂▁█▂▃▂▅▃▂70.85945.66728.192102.77861.13638.23732.23290.36453.64443.17432.096102.95263.0136.86331.4591.10550.30133.57331.91783.66356.80926.29332.71374.00366.74724.09725.74787.32144.97227.83628.50773.05746.23735.1798.66593.01635.0326.5577.631105.3421.14130.52718.3468.29638.20516.656
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▃▄▆▆▃▃▇▆▃▄▇▇▃▅█▆▃▃▃▅▂▂▃▅▃▃▇▅▁▃▃▅▂▃▆▅▂▄▇▄▁▂▃▄▁0.251-0.0310.0420.2710.27-0.032-0.0630.3420.244-0.0490.0890.360.305-0.0310.1590.4420.265-0.096-0.059-0.0830.14-0.199-0.159-0.0690.11-0.086-0.0090.3450.157-0.219-0.092-0.0150.137-0.153-0.0470.1950.137-0.112-0.0010.3470.076-0.252-0.15-0.010.028-0.206
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▄▂█▅▃▃▇▄▄▃█▅▃▃▇▄▃▃▆▅▂▃▆▅▂▂▇▄▂▂▆▄▃▁▇▃▂▁█▂▃▂▅▃▂71.1145.63628.234103.04961.40638.20532.16990.70653.88843.12532.185103.31263.31536.83231.60991.54750.56633.47731.85883.5856.94926.09432.55473.93466.85724.01125.73887.66645.12927.61728.41573.04246.37435.0268.61893.21135.16726.4457.63105.68721.21730.27518.1968.28638.23316.45
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▄▄█▅▃▄▇▅▄▃▇▅▃▄█▅▃▃▇▅▃▃▇▆▃▂▇▅▃▄▇▅▄▂▇▄▃▁▅▂▃▂▆81.34449.88643.083114.64767.59241.34645.074105.37960.42846.95329.749106.45969.69839.00542.251113.37267.03639.18940.96198.55265.10729.89738.15796.7975.83229.45517.44398.10359.08835.89245.626102.82361.5844.49119.71696.17446.00733.1510.98862.04217.32534.37624.7277.24NANA
us-gaap:IncomeTaxExpenseBenefit ▆▆▆▆▆▆▅▇▆▆▅▆▆▅▅▇▇▆▆▇▆▆▆▇▆▆▄▆▆▆▆█▇▆▅▆▆▆▄▁▅▆▆▆▄▅11.075.0865.53412.3456.9333.888-1.99915.1617.0284.3163.523.8687.1052.8943.2422.29616.946.1837.80715.5358.7214.3676.48423.5239.6426.111-17.19610.86914.3918.70714.09731.08815.9311.1113.3013.9110.5698.333-7.996-45.372-3.6524.8884.47910.115-16.6291.305
us-gaap:IncomeTaxesPaidNet NANA7.542.110.3250.08.835.2250.00.05.2720.00.00.013.040.51.20.0021.1151.6250.560.0024.4154.1580.2820.0026.6780.04.6660.021.3770.00.060.00.2730.0070.9730.198-0.8621.1530.004-12.7-27.9484.223-2.02-1.367
 us-gaap:IncomeTaxesPaidNet dei:LegalEntity ida:IdahoPowerCompanyNANA41.3070.00.0-9.1893.84213.772.2440.028.40935.5050.00.040.0-50.41745.722-22.8619.54524.0131.063-5.28-20.84930.3716.379-18.4136.3232.46118.372-1.040.90710.60.651-2.491-15.782-1.2325.464-3.0085.9312.5553.079-22.323-79.1936.48NANA
us-gaap:InterestExpense NANA21.78622.16822.72720.74420.77921.57122.10822.01721.9721.83620.96821.17321.65720.74220.64820.720.01520.31220.6421.06820.55720.27720.66320.43719.95119.87119.94220.03620.09820.79520.64919.4919.82619.40117.43617.20517.55217.44617.56818.95919.99218.74517.38918.988
 us-gaap:InterestExpense dei:LegalEntity ida:IdahoPowerCompanyNANANA22.16322.71420.74520.75521.56422.121.99321.95521.82120.95421.1621.6220.72620.63220.68419.98220.25320.57521.00320.51420.22520.59320.38619.88719.82219.88619.97519.99920.70720.55419.38619.6919.30117.32917.1117.43117.33717.4418.84619.8218.68417.318NA
us-gaap:InterestExpenseDebt ▅▅▅▇█▂▂▄▆▆▆▆▆▄▃▃▃▃▃▃▄▅▄▄▅▅▃▃▃▃▃▅▅▂▂▂▃▁▁▁▁▅▆▃▁▁21.03621.03621.03821.49522.05619.66219.65820.48921.15621.15421.15621.15321.41220.68820.30120.320.320.29820.29720.29620.46620.89720.61320.61421.05620.77320.13920.14120.14120.14120.14320.88720.79319.66919.6719.6720.08319.49919.49919.49919.50420.84721.48720.13519.42719.441
us-gaap:InterestPaidNet ▃▇▃█▄▅▄▇▄▆▄▆▄▅▅▅▄▅▄▅▆▄▆▃▆▃▅▃▅▃▆▃▅▃▅▃▄▂▄▂▄▄▆▁▅▁16.3225.30616.44426.32718.41619.88719.42523.63119.31522.88919.11922.33818.67420.8219.74720.77618.74320.73818.1120.23121.82118.17221.81217.54923.16816.91321.55217.00421.51617.22323.06117.29720.59617.01420.7516.94118.25314.94318.46415.65718.41818.4321.69313.69420.64113.021
us-gaap:NetIncomeLoss ▅▄▃█▅▃▄▇▄▃▂█▅▃▃▇▄▃▃▆▄▂▃▆▅▂▃▇▄▂▃▅▄▃▂▇▃▂▁█▂▂▂▅▃▂70.02344.83137.507102.03160.38937.4947.13689.87653.15642.68626.14102.23162.28836.14238.85290.63449.83133.10233.21383.156.24625.72931.83273.33666.0823.4334.64886.88944.5427.40431.62171.7545.51333.53316.46292.06935.30124.938.985107.06720.90129.7420.39167.13539.20916.063
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▆▃▄▆▆▃▃▇▆▃▄▇▇▃▅█▆▃▃▃▅▂▂▃▅▃▃▇▅▁▃▃▅▂▃▆▅▂▄▇▄▁▂▃▄▁0.251-0.0310.0420.2710.27-0.032-0.0630.3420.244-0.0490.0890.360.305-0.0310.1590.4420.265-0.096-0.059-0.0830.14-0.199-0.159-0.0690.11-0.086-0.0090.3450.157-0.219-0.092-0.0150.137-0.153-0.0470.1950.137-0.112-0.0010.3470.076-0.252-0.15-0.010.028-0.206
us-gaap:NonoperatingIncomeExpense █▁-11.06-11.223NANA-11.848-10.224NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NonoperatingIncomeExpense dei:LegalEntity ida:IdahoPowerCompany▆▆▁▇▇▇██▇▇▇█▇▇▇▇▇▇▇█▇▇▇▇▇▇▇▇▇▇█▇▇▇▇▇▇▇█▇▇▇▇▇▇-11.662-11.035-74.76810.489.5539.73610.58310.6738.8989.5092.67611.2136.2779.0477.889.4555.035.965.10616.7245.0324.0817.4928.2336.5924.1717.6088.2873.5894.89717.0887.7591.9354.0914.5565.6786.19910.4313.27310.0181.5745.1747.2858.4944.939NA
us-gaap:OperatingExpenses ▆▅▅█▄▄▄▆▄▇▆█▅▅▅▇▅▅▄▆▄▄▄▆▅▄▆▆▄▄▅▆▃▂▃▃▁▁▃▄▂▂▁▃▂▃267.67254.945261.952300.491239.326239.438238.578272.164245.115292.2263.626293.568257.117259.518252.099287.41253.896251.729240.506274.117238.483237.138236.849264.501250.352236.491262.235276.479245.974244.141258.887265.548224.542205.495220.686222.676195.901198.796222.184238.237200.684201.403192.931220.364205.148218.916
us-gaap:OperatingIncomeLoss ▆▄▄█▅▄▄▇▅▄▃▇▅▄▄█▅▄▄▆▅▃▃▇▆▃▂▇▅▃▃▇▅▄▂▇▄▃▁▅▃▄▃▆▃▃92.40461.10953.742124.7779.4451.5754.27114.15671.7858.11948.266115.23382.83550.58953.513120.91479.1150.81553.07797.92876.95343.81848.551104.66485.97642.90427.586105.72271.80948.57837.343115.55979.40659.43330.114111.34358.842.3448.46571.39334.29950.09139.02588.99336.60534.047
us-gaap:OtherNonoperatingIncomeExpense ▄▄▅▅▅▅▅▅▅▅▃▄▄▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅█▅▅▅▁▅▆▆▆▆▆▆▅▅▅▆0.460.2410.8170.7161.0430.9321.5031.8251.062.114-3.0660.350.309-0.4592.0612.2562.3712.3972.82.6812.1892.2042.1051.2221.8711.9611.5951.1931.2522.28813.0311.5671.5880.826-11.8822.9286.5716.5935.626.015.0414.5384.1233.553.0124.481
us-gaap:ProfitLoss ▅▄▃█▅▃▄▇▄▃▂█▅▃▃▇▄▃▃▆▄▂▃▆▅▂▃▇▄▂▃▅▄▃▂▇▃▂▁█▂▂▂▅▃▁70.27444.837.549102.30260.65937.45847.07390.21853.442.63726.229102.59162.59336.11139.01191.07650.09633.00633.15483.01756.38625.5331.67373.26766.1923.34434.63987.23444.69727.18531.52971.73545.6533.3816.41592.26435.43824.8188.984107.41420.97729.48820.24167.12539.23715.857
us-gaap:RegulatedAndUnregulatedOperatingRevenue ▆▄▄█▄▃▃▇▄▅▄▇▅▄▄▇▅▄▃▆▄▃▃▆▅▃▃▆▄▃▃▆▄▂▂▅▂▁▁▄▁▂▁▄▁▂360.074316.054315.694425.261318.766291.008292.848386.32316.895350.319311.892408.801339.952310.107305.612408.324333.006302.544293.583372.045315.436280.956285.4369.165336.328279.395289.821382.201317.783292.719296.23381.107303.948264.928250.8334.019254.701241.14230.649309.63234.983251.494231.956309.357241.753252.963
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▆▂▃█▃▁▁▆▃▄▂█▄▂▂█▄▂357.461291.327302.541402.941310.971270.184275.005367.101307.779335.402292.444398.798331.298289.573294.225405.697326.19293.892NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:UnregulatedOperatingRevenue ▄▁▂▅▅▁▁▆▅▁▃▇▆▂▅█▅1.0160.4860.6781.0911.10.520.4821.2921.1210.5480.8251.4461.2530.6461.1061.6691.238NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ███▇█▆▆▆▆▆▆▆▅▅▅▆▆▅▆▅▅▅▅▅▅▅▄▃▃▃▃▄▃▃▃▃▂▂▂▂▁▁▁7201.4587078.3017095.2446930.1597020.5326609.956641.2016502.3196460.8536387.8156382.7546288.6366206.1176261.6786045.4056367.1836277.3996229.9486289.8976129.1096081.3566130.456023.3145937.9865897.3765971.7525716.8535498.2775389.8695361.3925364.5635591.1185488.6845315.8445319.5165207.6375103.0034990.6214960.6094826.9354642.3244590.2484676.055NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇█▆▆▆▆▆▆▆▅▅▅▆▆▅▆▅▅▅▅▅▅▅▄▃▃▃▃▄▃▃▃▃▂▂▂▂▁▁▁7201.4587078.3017095.2446930.1597020.5326609.956641.2016502.3196460.8536387.8156382.7546288.6366206.1176261.6786045.4056367.1836277.3996229.9486289.8976129.1096081.3566130.456023.3145937.9865897.3765971.7525716.8535498.2775389.8695361.3925364.5635591.1185488.6845315.8445319.5165207.6375103.0034990.6214960.6094826.9354642.3244590.2484676.055NANANA
us-gaap:StockholdersEquity ████▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▂▃▂▂▂▂▁▁▁2606.4112569.4162559.982565.9872495.8052467.3782464.6282464.1212403.8052380.2362370.362368.1152293.2042257.1682251.3852247.5922182.8432159.1492153.9062148.6432089.642057.5072057.8842049.8141998.4191954.1851953.2011949.0161881.8761857.5551850.651859.5951803.6231775.3411758.7531769.9771692.3261670.5681657.6541656.8471563.0921549.9571532.113NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▆▅▅▆█▃▄▅▅▅▅▅▄▅▃▃▂▂▃▃▄▅▃▃▄▆▃▃▃▃▃▄▄▂▂▂▂▁▁▁▁▁▃672.979593.892642.401684.771828.041472.942565.146604.165599.453576.292597.64582.718539.351637.904443.601457.928420.078409.057440.312459.889496.584587.286462.036494.319528.044692.691442.101475.206446.995493.712476.611566.85520.57384.252367.253365.995358.084323.285310.972309.255326.573336.813460.635NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▅▅▆█▃▄▅▅▄▅▅▄▆▂▂▁▂▂▂▂▄▃▃▃▆▂▃▂▂▂▄▃▁▁▁▁▁▁▁▂▂▄▄▁▂259.965240.007275.116312.018460.365138.871217.254260.571239.664231.342267.492261.25183.141307.27776.649104.41132.62947.0161.48100.79690.558219.683114.802121.26130.979317.2456.808111.03850.62188.26578.162186.87136.15524.4626.52720.23414.3748.85727.81331.31458.31693.941228.677185.31329.48841.436
 us-gaap:ShortTermInvestments us-gaap:ConsolidatedEntities srt:ParentCompanyNANA25.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▄▃▃▇▃▂▃▆▄▆▃▅▅▄▃▇▄▄▂▄▃▂▃▅▃▃▃▅▆▆▆█▂▃▂▄▁▂▂▃▁▂▁84.54273.3672.826103.58178.51667.89572.67599.14383.64697.12577.17893.13887.97584.075.249101.70385.77180.98171.55786.21576.96269.23173.50591.93679.21574.0679.08393.27298.098.43197.873111.21469.1378.80666.11180.15462.81468.24666.29675.5461.69166.63462.114NANANA
 us-gaap:ReceivablesNetCurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA1.604NANANA2.125NANANA2.046NANANA52.359NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsCurrent █▃▂▂▁▁▁▁▃▄▃▁▁▁▁▁▁▂▄▃▂▁▁▁▂▁▁▂▂▂▂▃▃▂▄▄▂▄▄▃▂▂▄12.7052.761.9952.4530.160.0140.4050.9164.2854.8193.6550.9020.7570.0830.0180.1010.3012.3165.9612.9972.5190.0740.2880.412.1130.1940.6031.4722.252.4392.4013.1162.7672.544.9485.6282.6294.6174.6064.5071.2841.2944.667NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:AssetsNoncurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA24.171NANANA46.293NANANA17.87NANANA34.414NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ConstructionInProgressGross ▂█▁▂600.8617.265597.152599.557NANA552.499NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▇▇▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁4777.8974735.2194709.514641.5214594.4094557.8564531.4544476.7464451.1964415.0874395.7354352.6434331.0814300.6714283.8754240.9434213.5224193.584171.9994095.4244045.2684009.7083992.4133978.4853934.2133864.0453833.4773778.7543740.0673692.8613665.0413621.543587.2323554.5193536.0313506.8363473.0253420.6053406.593356.0463306.9923232.5843161.382NANANA
us-gaap:LongTermInvestments ▃▃▃▃▄▃▂▁▁▁▂▂▂▂▃▂▃▃▃▄▄▄▄▅▅▅▆▅▆▅▅▆▆▇▇▇███▇███129.0122.862126.948125.612130.941117.28698.21889.80894.50394.576101.178101.853106.558109.99115.698111.952118.877117.189125.164131.225144.798136.572140.743160.127159.466161.481165.424155.028162.916157.502159.072174.749178.305181.255189.02190.692198.083195.978199.931192.343198.305202.605202.944NANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities srt:ParentCompanyNANA2468.955NANANA2379.68NANANA2294.464NANANA2189.017NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▇▇▇█▇▇▇█▇████▆▆▅▅▅▅▅▆▁▁▆▇▂▁▂▂▂▂▃▃▄▄▄▃▁▁▁▁▂▂61.08859.56558.51561.74860.66360.84261.02861.88660.89662.52362.88262.72162.4857.85855.11851.29352.17652.46352.57153.55555.68940.8640.21656.74659.21842.99739.59842.41743.9442.24542.95446.0746.50248.91249.2648.32547.1739.70840.35239.47940.78741.77541.762NANANA
us-gaap:EquitySecuritiesFvNi ▇██▅▆▆▆▃▃▃▄▁▁47.75249.07750.73342.40143.66644.84342.73833.77634.79535.66836.48827.5427.916NA30.266NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent █▃█▅▃▂▇▄▃▄▇▃▃▂▄▂▃▁▆▃▃▁▅▃▄▂▅▄▃▂▄▄▃▂▄▅▅▂▅▄▄▁▆122.83481.602120.57699.76781.90667.662110.74584.28780.65183.045110.82475.65474.80468.8890.27772.15376.59563.225106.19477.89577.62160.60695.52681.04789.03565.1697.27182.90182.42472.08591.51988.83577.01165.30990.16593.41492.02471.275100.43290.08887.01464.569103.1NANANA
 us-gaap:AccruedIncomeTaxesCurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA2.745NANANA5.622NANANA8.354NANANA17.423NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▄▁▂▃▃▁41.54434.60429.34130.2732.47532.66828.452NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▅▃▄▄█▃▆▄▄▃▃▃▂▅▂▂▁▁▃▂▂▄▃▂▂▅▃▃▂▃▃▅▄▃▅▃▄▄▆▃▅▅█331.141261.872287.571302.771447.168247.854374.859291.082295.582273.466258.592250.406238.004331.837200.749225.792190.67180.784249.715205.291224.548311.819242.306205.332233.77347.258241.781239.703236.258246.845250.372335.264313.619255.408351.303268.264296.635283.944368.247254.461339.699331.342449.059NANANA
us-gaap:OtherLiabilitiesCurrent ▃▃▃▂▂▂▂▁▂▁▁▁▁▁▁▁▁▁▁▁▁▂▂▃▄▄▃▃▃▂▂▄▄▄▃▇▇█▇▇██▆29.54527.03730.76716.39121.14919.53316.62512.98815.72612.7511.0968.93611.95211.310.1829.111.81511.299.76310.26712.9818.3416.2729.77535.82632.67523.97525.13225.70222.05417.77937.79733.48634.82724.43860.35561.27572.84760.51162.96668.49668.67958.114NANANA
us-gaap:TaxesPayableCurrent ▆▅▂▇▄▃▁▇▄▃▁▇▄▃▁█▂▂▁▂▁▂▁▃▂▂▁▃▄▅▁43.07334.50119.50852.9128.57421.32711.50153.25331.18324.4112.00947.79728.80721.09811.07557.90219.97317.76311.34820.2612.65117.75410.76221.56715.9217.69610.36726.23227.73938.05113.302NANANA11.708NANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesNoncurrent NANA2240.803NANA2051.8152059.131904.7331920.2991893.5561913.5631830.3311835.8511834.3991842.4192143.4832154.392141.162137.7022025.6082017.8852012.731993.5541936.6461918.9991924.3071903.0691690.8081653.3911638.8651644.1931776.881752.1171745.4081738.6151628.5631573.4631545.6131543.1181424.1181248.451NA1202.725NANANA
 us-gaap:LiabilitiesNoncurrent dei:LegalEntity ida:IdahoPowerCompanyNANA2266.883NANA2092.5962106.4921959.5141974.281946.7511966.0881914.9241901.2391899.1591906.5072253.4592261.0172247.5972243.8292123.8782132.2522127.0452107.3351984.1261993.5691997.9721978.1741771.8561732.6711727.3831731.4991889.4331860.3641852.2131843.7751732.0381664.8131635.4651631.4571518.2761343.508NA1295.119NANANA
 us-gaap:LiabilitiesNoncurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA62.773NANANA72.091NANANA33.765NANANA36.054NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebt NANA2000.414NANANA1836.659NANANA1834.788NANANA1746.123NANANA1745.678NANANA1726.474NANANA1615.502NANANA1616.322NANANA1537.696NANANA1488.614NANANANANANANA
us-gaap:LongTermDebtNoncurrent █████▆▅▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▃▂▃▃▂▁▂▂▂▂2000.5272000.4712000.4142000.3582000.4551837.011736.6591836.3951835.5211835.1551834.7881834.4221834.0551833.5761746.1231745.7461745.3681744.9911744.6141745.5481745.1821744.4331725.411741.8751741.81741.7241614.4381614.3771614.3161614.2561615.2581615.1971615.1281535.6271466.6321536.5731536.5141486.5681387.551487.4681487.3871487.3051488.287NANANA
 us-gaap:SecuredLongTermDebt us-gaap:DebtInstrument ida:FirstMortgageBonds190SeriesLDueJuly152030NANA80.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:SecuredLongTermDebt us-gaap:DebtInstrument ida:FirstMortgageBonds4.20KSeriesdue2048DomainNANA450.0NANANA220.0NANANA220.0NANA220.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:SecuredLongTermDebt us-gaap:DebtInstrument ida:FirstMortgageBonds430SeriesDue2042NANA75.0NANANA75.0NANANA75.0NANANA75.0NANANA75.0NANANA75.0NANANA75.0NANANA75.0NANANA75.0NANANA0.0NANANANANANANA
 us-gaap:SecuredLongTermDebt us-gaap:DebtInstrument ida:Firstmortgagebonds4.05Seriesdue2046NANA120.0NANANA120.0NANANA120.0NANANA120.0NANANA120.0NANA120.00.0NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▇▇█▁▁▂▂789.215794.525800.251736.273739.242742.651746.231NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ███▆▆▆▆▄▄▄▄▄▄▄▅▄▄▄▄▃▄▄▄▄▄▄▄▁▁▁▁▄▄▄▄▃▃▃▃638.455641.113634.07499.413522.223515.626519.57410.799433.725427.76431.475415.619429.513434.533438.869391.579424.329417.78411.523375.814397.616401.161394.03385.886407.363410.091403.334230.385247.776249.537244.627416.272427.946430.625423.409339.324341.913335.456363.209NANANA263.688NANANA
us-gaap:MinorityInterest █▇▇▇▇▆▆▆▆▅▅▅▄▃▄▃▂▂▂▂▂▂▂▃▃▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂6.6966.4456.4766.4346.1635.8935.9255.9885.6465.4025.4515.3625.0034.6984.7294.574.1283.8643.964.0194.1013.9614.164.3194.3884.2784.3644.3734.0283.8714.094.1824.1974.064.2134.264.0653.9284.044.0413.6953.6193.871NANANA
us-gaap:OtherLiabilitiesNoncurrent ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂████60.59748.91748.75247.68750.16752.39745.13145.12645.86243.83843.21643.31543.75144.33944.56644.65144.5243.68645.08445.41245.27244.91545.86749.11147.66950.76644.23845.29248.65649.79754.152.71759.56659.00365.22863.82465.11771.50975.805341.442353.871343.666338.158NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ████▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▃▂▃▂▂▂▂▁▁▁2606.4112569.4162559.982565.9872495.8052467.3782464.6282464.1212403.8052380.2362370.362368.1152293.2042257.1682251.3852247.5922182.8432159.1492153.9062148.6432089.642057.5072057.8842049.8141998.4191954.1851953.2011949.0161881.8761857.5551850.651859.5951803.6231775.3411758.7531769.9771692.3261670.5681657.6541656.8471563.0921549.9571532.113NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ████▇▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▁▁2613.1072575.8612566.4562572.4212501.9682473.2712470.5532470.1092409.4512385.6382375.8112373.4772298.2072261.8662256.1142252.1622186.9712163.0132157.8662152.6622093.7412061.4682062.0442054.1332002.8071958.4631957.5651953.3891885.9041861.4261854.741863.7771807.821779.4011762.9661774.2371696.3911674.4961661.6941660.8881566.7871553.5761535.9841521.2681433.841406.949
us-gaap:CommonStockValue ████▇▇█▇▇▇▇▇▇▆▆▆▆▆▆▆▆▅▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▃▂▂▁▁871.111868.944869.235867.491866.127864.85868.307866.131864.266863.425863.593861.515859.652857.533857.207855.043853.604852.663851.833850.698849.609848.361849.112848.003846.914845.712845.402843.163841.718840.472839.75838.575836.56835.418834.922835.742834.547831.296828.389820.271816.891809.974807.842NANANA
 us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity ida:IdahoPowerCompany██████████████████████████████████████▆▁▁712.257712.258712.258712.258712.257712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.258712.257712.257712.258704.758688.758688.758NA688.758NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ████▇▇▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁1776.9861742.9941734.1031732.5391664.4681638.0651634.5251621.3421563.3991542.1751531.5431537.3321465.0091432.5841426.5281413.3871350.5371328.4891323.1981317.7321260.3691229.8871230.1051224.0251174.3661131.9691132.2371121.391056.1331033.2251027.4611034.472981.822955.409940.968943.575868.066849.327840.916846.873754.771748.764733.879NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▁▃▃▃▂▅▅▅▅▄▄▄▃▆▆▆▆▆▆▆▅▅▅▅▅▇▇▆▆▇▇▇▆███▇████-41.686-42.522-43.358-34.043-34.79-35.537-36.284-21.38-21.868-22.356-22.844-28.8-29.521-30.243-30.964-19.47-19.941-20.411-20.882-19.586-20.149-20.712-21.276-22.157-22.824-23.491-24.158-15.257-15.689-16.121-16.553-13.439-14.746-15.47-17.116-9.319-10.266-9.995-11.622-10.268-8.541-8.781-9.568NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity ida:IdahoPowerCompany▁█▁▂▂▂▂▃▃▃▃▂▂▂▂▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃-41.68642.522-43.358-34.043-34.79-35.537-36.284-21.38-21.868-22.356-22.844-28.8-29.521-30.243-30.964-19.47-19.941-20.411-20.882-19.586-20.149-20.712-21.276-22.157-22.824-23.491-24.158-15.257-15.689-16.121-16.553-13.439-14.746NA-17.116-9.319-10.266-9.995-11.622-10.268-8.541NA-9.568NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedDefinedBenefitPlansAdjustment▁▁▁▃▃▃▃▆▆▆▆▄▄▄▄▇▆▆▆▇▆▆▆▆▆▆▅█▇▇▇▆▆▆▆██-41.686-42.522-43.358-34.043-34.79-35.537-36.284-21.38-21.868-22.356-22.844-28.8-29.521-30.243-30.964-19.47-19.941-20.411-20.882-19.586-20.149-20.712-21.276-22.157-22.824-23.491-24.158-15.257-15.689-16.121-16.553-19.858-20.322-20.787-21.252-13.396-13.661NA-14.191NANANA-12.537NANANA
us-gaap:MinorityInterest █▇▇▇▇▆▆▆▆▅▅▅▄▃▄▃▂▂▂▂▂▂▂▃▃▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂6.6966.4456.4766.4346.1635.8935.9255.9885.6465.4025.4515.3625.0034.6984.7294.574.1283.8643.964.0194.1013.9614.164.3194.3884.2784.3644.3734.0283.8714.094.1824.1974.064.2134.264.0653.9284.044.0413.6953.6193.871NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▄▅▇▄▁▃▅▅▂▆█▅▄▄▇▃▅▃▆▃▃▂▅▃▅▂▇▃▄▂▆▂▂▃▄▂▁▃▃▃▄▄▁▄▄83.53383.662104.101155.41794.81733.79679.61120.942109.07456.999125.683169.519104.68691.73889.196157.1877.948113.69672.289137.52871.71366.17662.374119.84565.53105.44548.516152.5266.36996.93857.903133.43760.2353.97967.78798.44545.38737.6575.33378.01663.67593.21982.87135.31486.765100.45
us-gaap:NetCashProvidedByUsedInInvestingActivities █▃▁▂▄▄▃▄▄▅▃▅▅▆▃▅▅▄▁▃▅▆▅▃▄▄▃▅▄▆▄▅▅▆▅▅▄▆▄▄▃▁▂▃▃▄-27.675-79.349-105.166-91.255-77.163-73.674-87.909-66.921-68.93-56.732-87.698-61.571-64.215-44.693-84.476-59.584-65.187-74.053-99.901-83.08-61.242-53.221-58.794-82.266-74.055-76.591-79.798-65.174-72.161-55.287-76.604-55.423-55.875-48.691-58.532-62.645-73.663-48.981-72.01-77.486-82.858-100.004-97.767-81.908-77.881-70.778
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity ida:IdahoPowerCompany▅▅▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▁█▄▅-47.845-74.014-102.447-64.28-69.454-71.768-87.911-66.985-66.336-56.732-87.732-61.618-64.262-44.687-84.5-59.721-65.174-74.053-99.946-83.113-61.308-53.219-58.645-82.253-74.229-76.621-79.883-65.316-72.125-56.079-76.654-55.474-56.068-50.139-58.486-62.838-73.701-48.63-71.423-77.432-282.29699.72-93.714-78.692NANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃▁█▃▃▃▃▃▃▃▂▆▃▄▄▃▄▃▂▅▄▃▁▇▄▄▃▃▃▄▅▄▄▃▄▄▄▄▄▂▅▇▄▃-35.9-39.422-35.837-212.509303.84-38.505-35.018-33.114-31.822-36.417-31.743-29.839-164.607183.583-32.482-25.814-27.142-54.113-11.704-44.21-139.59691.926-10.038-47.298-177.736231.578-22.948-26.929-31.852-31.548-90.007-27.299107.34-7.355-2.962-29.9433.793-7.625-6.824-27.532-16.442-127.95158.26202.419-20.832-41.223
 us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity ida:IdahoPowerCompany▃▃▃▁█▃▃▃▃▃▃▃▂▆▃▄▄▃▄▄▂▅▄▄▂▇▄▄▄▄▃▄▅▄▄▄▄▄▄▄▄▂▄▇-36.025-35.956-35.987-212.611304.161-33.948-34.855-33.203-31.946-32.054-31.935-29.951-164.745187.269-30.047-27.783-27.784-50.775-6.302-25.792-140.16491.961-26.342-23.691-161.751221.166-23.627-21.631-21.632-22.758-91.8-19.391112.493-3.591-19.295-26.71838.384-8.634-0.144-14.922-14.916-135.9944.817203.031NANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect █▁19.958-35.109NA-148.347321.494-78.383NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DepreciationDepletionAndAmortization ▇▇▇▇▇▇▇▇▆▇▇▆▆▆▆▆█▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▂▁▁▁▁44.60344.28643.91544.26244.09843.66644.40743.73842.29343.36243.15442.6642.27841.02840.88241.13946.18437.72837.13336.97837.03836.14536.27735.79335.45435.05734.72234.50933.96933.88834.24233.50932.8333.19532.70732.97531.05431.87532.01331.25629.79831.59230.59230.23430.58830.435
us-gaap:IncreaseDecreaseInAccountsReceivable ▅▄▁▆▅▄▂▆▂▇▃▅▄▅▂▆▄▄▃▅▄▄▂▅▅▃▂▄▃▄▃█▅▃▃▆▄▄11.793.451-30.84122.27214.045-5.102-18.80215.465-15.90225.235-13.7057.0391.0154.922-24.52517.7623.252-0.494-9.76412.8394.324-4.728-19.44413.9227.576-6.794-16.0611.886-9.12.842-8.99640.01913.692-15.158-12.03517.449-1.956-0.717NANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▄▅▇▄▁▃▅▅▂▆█▅▄▄▇▃▅▃▆▃▃▂▅▃▅▂▇▃▄▂▆▂▂▃▄▂▁▃▃▃▄▄▁▄▄83.53383.662104.101155.41794.81733.79679.61120.942109.07456.999125.683169.519104.68691.73889.196157.1877.948113.69672.289137.52871.71366.17662.374119.84565.53105.44548.516152.5266.36996.93857.903133.43760.2353.97967.78798.44545.38737.6575.33378.01663.67593.21982.87135.31486.765100.45
us-gaap:NetIncomeLoss ▅▄▃█▅▃▄▇▄▃▂█▅▃▃▇▄▃▃▆▄▂▃▆▅▂▃▇▄▂▃▅▄▃▂▇▃▂▁█▂▂▂▅▃▂70.02344.83137.507102.03160.38937.4947.13689.87653.15642.68626.14102.23162.28836.14238.85290.63449.83133.10233.21383.156.24625.72931.83273.33666.0823.4334.64886.88944.5427.40431.62171.7545.51333.53316.46292.06935.30124.938.985107.06720.90129.7420.39167.13539.20916.063
us-gaap:ProfitLoss ▅▄▃█▅▃▄▇▄▃▂█▅▃▃▇▄▃▃▆▄▂▃▆▅▂▃▇▄▂▃▅▄▃▂▇▃▂▁█▂▂▂▅▃▁70.27444.837.549102.30260.65937.45847.07390.21853.442.63726.229102.59162.59336.11139.01191.07650.09633.00633.15483.01756.38625.5331.67373.26766.1923.34434.63987.23444.69727.18531.52971.73545.6533.3816.41592.26435.43824.8188.984107.41420.97729.48820.24167.12539.23715.857
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▃▁▂▄▄▃▄▄▅▃▅▅▆▃▅▅▄▁▃▅▆▅▃▄▄▃▅▄▆▄▅▅▆▅▅▄▆▄▄▃▁▂▃▃▄-27.675-79.349-105.166-91.255-77.163-73.674-87.909-66.921-68.93-56.732-87.698-61.571-64.215-44.693-84.476-59.584-65.187-74.053-99.901-83.08-61.242-53.221-58.794-82.266-74.055-76.591-79.798-65.174-72.161-55.287-76.604-55.423-55.875-48.691-58.532-62.645-73.663-48.981-72.01-77.486-82.858-100.004-97.767-81.908-77.881-70.778
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity ida:IdahoPowerCompany▅▅▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▁█▄▅-47.845-74.014-102.447-64.28-69.454-71.768-87.911-66.985-66.336-56.732-87.732-61.618-64.262-44.687-84.5-59.721-65.174-74.053-99.946-83.113-61.308-53.219-58.645-82.253-74.229-76.621-79.883-65.316-72.125-56.079-76.654-55.474-56.068-50.139-58.486-62.838-73.701-48.63-71.423-77.432-282.29699.72-93.714-78.692NANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▁▅▇▄▄▄▅▄▄▃▅▃▃▃▅▃▄▄▇▆▃▂▂▆▄▅▄▄▄▂▄▂▂▁▁▃▄▁▄▅▆█▆▅▇▄50.97277.29397.53868.28471.5573.56679.83469.01168.5361.3379.87864.37766.57267.02678.14860.99972.43773.90496.98482.80662.50154.65958.13182.91774.54278.43173.16672.60269.13459.19269.7656.49157.08351.97652.0164.6674.70948.38270.77480.94884.163101.8888.81582.7597.65869.029
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▃▃▃▁█▃▃▃▃▃▃▃▂▆▃▄▄▃▄▃▂▅▄▃▁▇▄▄▃▃▃▄▅▄▄▃▄▄▄▄▄▂▅▇▄▃-35.9-39.422-35.837-212.509303.84-38.505-35.018-33.114-31.822-36.417-31.743-29.839-164.607183.583-32.482-25.814-27.142-54.113-11.704-44.21-139.59691.926-10.038-47.298-177.736231.578-22.948-26.929-31.852-31.548-90.007-27.299107.34-7.355-2.962-29.9433.793-7.625-6.824-27.532-16.442-127.95158.26202.419-20.832-41.223
 us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity ida:IdahoPowerCompany▃▃▃▁█▃▃▃▃▃▃▃▂▆▃▄▄▃▄▄▂▅▄▄▂▇▄▄▄▄▃▄▅▄▄▄▄▄▄▄▄▂▄▇-36.025-35.956-35.987-212.611304.161-33.948-34.855-33.203-31.946-32.054-31.935-29.951-164.745187.269-30.047-27.783-27.784-50.775-6.302-25.792-140.16491.961-26.342-23.691-161.751221.166-23.627-21.631-21.632-22.758-91.8-19.391112.493-3.591-19.295-26.71838.384-8.634-0.144-14.922-14.916-135.9944.817203.031NANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA0.00.0NANA0.0166.10.00.00.00.00.0220.00.00.00.00.00.00.00.0120.00.00.00.0250.00.00.00.00.00.00.0NANA0.00.0NANA0.00.0NANA0.0NANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity ida:IdahoPowerCompanyNANA0.00.0NANA0.0166.10.00.00.00.00.0220.00.00.00.00.00.00.00.0120.00.00.00.0250.00.00.00.00.00.00.0NANA0.00.0NANA0.00.0NANA0.0NANANA
us-gaap:RepaymentsOfLongTermDebt NANA0.0NANANA0.0166.1NANA0.00.0130.00.00.00.00.01.0640.00.0100.01.0640.00.0120.01.0640.00.00.01.06470.00.00.01.0640.00.0100.01.0640.00.00.0121.0640.00.00.01.064
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity ida:IdahoPowerCompanyNANA0.0NANANA0.0166.1NANA0.00.0130.00.00.00.00.01.0640.00.0100.01.0640.00.0120.01.0640.00.00.01.06470.00.00.01.0640.00.0100.01.0640.00.00.0121.0640.00.0NANA
us-gaap:PaymentsOfDividendsCommonStock ███▇▇▇▇▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▂▂▃▂▂▂▂▁▁▁▁▁▁▁▁35.90636.37935.81433.83933.84834.31233.80631.79431.78732.2931.74729.73329.73230.20929.68627.67827.67628.08727.63425.63125.63226.08725.58523.89823.27324.05423.53121.53921.5421.87921.50919.0119.0119.30318.97816.4816.6716.814.8614.84614.81515.14714.65914.38314.35514.475
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument ida:IdahoPower,ida:FirstMortgageBonds2.95Seriesdue2022DomainNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument ida:IdahoPower,ida:FirstMortgageBonds450SeriesDue2020NANANANA3.4e-083.4e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument ida:IdahoPowerCompany,ida:HumboldtCountyPollutionControlRevenueBondsDomainNANA1.4499999999999999e-06NANANA1.45e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument ida:IdahoPowerCompany,ida:PollutionControlBond170Due2026NANANA5.25e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument ida:IdahoPowerCompany,ida:PollutionControlBonds145Due2024NANANA5.150000000000001e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument ida:IdahoPowerCompany,ida:SweetwaterCountyPollutionControlRevenueBonddue20261.7NANA1.7e-06NANANA1.7e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:DebtInstrument,us-gaap:SubsequentEventType ida:IdahoPower,ida:FirstMortgageBonds2.95Seriesdue2022Domain,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds190SeriesLDueJuly152030NANA1.8999999999999998e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds250SeriesDue2023DomainNANA2.5e-06NANANA2.5000000000000002e-08NANANA2.5000000000000002e-08NANANA2.5000000000000002e-08NANANA2.5000000000000002e-08NANANA2.5000000000000002e-08NANANA2.5000000000000002e-08NANANA2.5000000000000002e-08NANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds295SeriesDue2022NANA2.95e-06NANANA2.95e-08NANANA2.95e-08NANANA2.95e-08NANANA2.95e-08NANANA2.95e-08NANANA2.95e-08NANANA2.95e-08NANANA2.95e-08NANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds340SeriesDue2020NANA3.4e-06NANANA3.4e-08NANANA3.4e-08NANANA3.4e-08NANANA3.4e-08NANANA3.4e-08NANANA3.4e-08NANANA3.4e-08NANANA3.4e-08NANA3.4e-083.4e-08NANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds4.20KSeriesdue2048DomainNANA4.2000000000000004e-06NANANA4.2000000000000006e-08NANA4.2000000000000004e-064.2000000000000006e-08NANA4.2000000000000006e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds400SeriesDue2043DomainNANA4e-06NANANA4e-08NANANA4e-08NANANA4e-08NANANA4e-08NANANA4e-08NANANA4e-08NANANA4e-08NANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:FirstMortgageBonds430SeriesDue2042NANA4.2999999999999995e-06NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds3.65Seriesdue2045NANA3.6499999999999998e-06NANANA3.6499999999999996e-08NANANA3.6499999999999996e-08NANANA3.6499999999999996e-08NANANA3.6499999999999996e-08NANANA3.6499999999999996e-083.6499999999999996e-083.6499999999999996e-083.6499999999999996e-08NANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds4.05Seriesdue2046NANA4.05e-06NANANA4.05e-08NANANA4.05e-08NANANA4.05e-08NANANA4.05e-084.05e-084.05e-084.05e-08NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds4.85Seriesdue2040NANA4.849999999999999e-06NANANA4.8500000000000004e-08NANANA4.8500000000000004e-08NANANA4.8500000000000004e-08NANANA4.8500000000000004e-08NANANA4.8500000000000004e-08NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds5.30Seriesdue2035NANA5.3e-06NANANA5.3e-08NANANA5.3e-08NANANA5.3e-08NANANA5.3e-08NANANA5.3e-08NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds5.50Seriesdue2033NANA5.5e-06NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds5.50Seriesdue2034NANA5.5e-06NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds6.00Seriesdue2032NANA6e-06NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds6.25Seriesdue2037NANA6.25e-06NANANA6.25e-08NANANA6.25e-08NANANA6.25e-08NANANA6.25e-08NANANA6.25e-08NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument ida:Firstmortgagebonds6.30Seriesdue2037NANA6.3e-06NANANA6.3e-08NANANA6.3e-08NANANA6.3e-08NANANA6.3e-08NANANA6.3e-08NANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value871868869867866864868866864863863861859857857855853852851850849848849848846845845843841840839838836835834835834831828820816809807756729675
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.112.312.312.512.313.113.113.313.413.513.513.713.913.714.213.413.613.713.513.914.013.814.114.314.414.214.815.315.615.715.715.015.215.715.716.016.416.716.717.017.617.617.317.80.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value505050505050505050505050505050505042050505050505050505050505050505050505050505049494949494746
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesIssued dei:LegalEntity

ida:IdahoPowerCompany


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value393939393939393939393939393939393939393939393939393939393939393939393939393939393939
Percentage of CommonStockSharesIssued77.577.577.677.677.677.677.677.677.677.677.677.677.677.677.677.60.177.677.677.677.677.677.877.877.877.877.877.877.877.877.977.977.977.978.178.178.178.278.478.778.779.2

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
Value120120120120120120120120120120120120120120120120120000120120120120120120120120120120120120120120120120120120120120120120120120120120120
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value5050505050505050505050505050505050505050505050505050504949494949484847
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value5050505050505050505050505050505050505050505050505050494949494949484747
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
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
Value1.380.890.742.021.190.740.931.781.050.850.522.031.240.720.771.80.990.660.661.651.120.510.641.461.320.470.691.730.890.550.631.430.910.670.331.840.710.50.182.160.420.60.411.40.820.34
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.380.890.742.021.190.740.931.781.050.840.522.021.230.720.771.80.990.660.661.651.120.510.631.461.310.470.691.730.890.550.631.430.910.670.321.840.710.50.172.160.420.60.41.390.820.34
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
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
Value2140000.02710000.01738000.01353000.01701000.02624000.02245000.01877000.01830000.02837000.02051000.01900000.02870000.02541000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.60.90.00.30.50.90.00.50.60.80.00.50.80.8

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value70452810261383290534332102633631915033318356263274662425874427287346358.6659335267.631105213018683816
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue19.714.40.024.219.213.10.023.416.912.30.025.218.511.90.022.315.111.10.022.518.09.40.020.019.88.60.022.814.29.50.019.215.213.30.027.813.811.00.034.09.012.10.022.115.86.6

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value251000.0-31000.042000.0271000.0270000.0-32000.0-63000.0342000.0244000.0-49000.089000.0360000.0305000.0-31000.0159000.0442000.0265000.0-96000.0-59000.0-83000.0140000.0-199000.0-159000.0-69000.0110000.0-86000.0-9000.0345000.0157000.0-219000.0-92000.0-15000.0137000.0-153000.0-47000.0195000.0137000.0-112000.0-1000.0347000.076000.0-252000.0-150000.0-10000.028000.0-206000.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.1-0.00.00.10.1-0.00.00.10.1-0.00.00.10.1-0.00.00.10.1-0.00.0-0.00.0-0.10.0-0.00.0-0.00.00.10.0-0.10.0-0.00.0-0.10.00.10.1-0.00.00.10.0-0.10.0-0.00.0-0.1

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value71452810361383290534332103633631915033318356263273662425874527287346358.6189335267.63105213018683816
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue19.714.40.024.219.313.10.023.517.012.30.025.318.611.90.022.415.211.10.022.518.19.30.020.019.98.60.022.914.29.40.019.215.313.20.027.913.811.00.034.19.012.00.022.115.86.5

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

ida:IdahoPowerCompany


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6945271015937288851423110061362988483227805526327265242585432824714535109034277.9761032030166537
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest98.099.198.698.197.298.289.597.595.997.698.297.796.999.394.197.096.698.486.696.497.2100.099.397.997.2100.598.497.095.5102.685.598.098.6101.9118.997.197.9103.8104.597.698.7101.292.896.498.9
Percentage of RegulatedAndUnregulatedOperatingRevenue19.314.30.023.818.712.90.022.916.312.00.024.718.011.80.021.714.710.90.021.717.69.30.019.619.38.60.022.213.69.70.018.815.013.50.027.113.511.40.033.38.912.20.021.315.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value8149431146741451056046291066939421136739409865293896752917985935451026144199646330.9886217342477
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue22.615.80.027.021.214.20.027.319.113.40.026.020.512.60.027.820.113.00.026.520.610.60.026.222.510.50.025.718.612.30.027.020.316.80.028.818.113.70.020.07.413.70.025.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value8050431136641451035846291046739421116538349763303895742917965836361056347239747364.9286318372779
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest98.6100.7100.898.697.899.699.997.896.998.598.598.097.5100.099.698.197.699.185.398.898.1101.0101.798.898.7101.7102.398.098.3102.781.0102.4102.8106.6117.6101.3102.9109.0498.8101.7105.6107.8111.0102.8
Percentage of RegulatedAndUnregulatedOperatingRevenue22.315.90.026.620.714.10.026.718.513.20.025.520.012.60.027.319.612.80.026.220.210.70.025.922.310.70.025.118.312.60.027.620.817.90.029.218.615.00.020.47.814.70.025.7
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


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
Value115.0865.534126.9333.888-1.999157.0284.3163.523.8687.1052.8943.2422166.1837.807158.7214.3676.484239.6426.111-17.19610148.707143115113.3013.91108.333-7.996-45.372-3.6524.8884.47910-16.6291.305
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue3.11.60.02.92.21.30.03.92.21.20.00.92.10.90.05.55.12.00.04.22.81.60.06.42.92.20.02.84.53.00.08.25.24.20.01.24.13.50.0-14.7-1.61.90.03.3-6.90.5

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value115.8736.288127.1924.3861.326157.3714.6663.6564.1617.3453.154.90922176.3736.088179.0594.6687.35623106.482-16.38311158.9719.5653418135.1527.8641210-4.402-41.776-2.4147.1938.49714-14.816
Percentage of IncomeTaxExpenseBenefit103.2115.5113.6102.7103.7112.8-66.399.3104.9108.1103.9107.6103.4108.8151.5102.9100.6103.178.0111.8103.9106.9113.4101.6108.8106.195.3105.9107.1103.067.9112.5115.2120.4156.1201.1119.6123.855.192.166.1147.2189.7145.689.1
Percentage of RegulatedAndUnregulatedOperatingRevenue3.21.90.03.02.31.50.03.92.31.30.01.02.21.00.05.65.12.10.04.72.91.70.06.53.12.30.03.04.93.10.09.26.05.00.02.45.04.30.0-13.5-1.02.90.04.8-6.1
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.542.110.3250.08.835.2250.00.05.2720.00.00.0130.51.20.0021.1151.6250.560.0024.4154.1580.2820.0026.6780.04.6660.021.3770.00.060.00.2730.0070.9730.198-0.8621.1530.004-12.7-27.9484.223-2.02-1.367
Percentage of IncomeTaxesPaidNet100.0100.0100.00.0100.0100.00.00.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.00.50.10.00.01.40.00.00.00.00.00.00.00.10.40.00.00.40.20.00.01.10.10.00.00.01.50.00.00.00.00.00.00.00.40.10.00.40.0-5.00.01.4-0.8-0.5

us-gaap:IncomeTaxesPaidNet dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value410.00.0-9.1893.842132.2440.028350.00.040-50.41745-22.8619.545241.063-5.28-20.8493016-18.4136.3232.46118-1.040.907100.651-2.491-15.782-1.2325.464-3.0085.93123.079-22.323-79.1936.48
Percentage of IncomeTaxesPaidNet547.80.00.00.043.5263.50.00.0538.90.00.00.0306.7-10083.43810.2-1143050.0856.11477.7189.8-264000.0-472.2730.45808.2-920650.094.70.0393.7-5200.065.90.01085.00.0-5781.0-17600.0561.6-1519.2-687.91088.976975.0175.8283.4153.4
Percentage of RegulatedAndUnregulatedOperatingRevenue0.00.00.0-3.20.03.60.70.00.08.70.00.00.0-12.313.7-7.60.06.50.3-1.90.08.24.9-6.60.00.65.8-0.40.02.80.2-0.90.0-0.42.1-1.20.04.11.3-8.90.02.1
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2122222020212222212120212120202020202021202020201919192020202019191917171717171819181718
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.05.27.17.10.05.67.06.30.05.36.26.80.05.16.26.80.05.56.57.50.05.56.17.30.05.26.36.80.05.56.87.40.05.86.87.10.05.67.57.50.06.17.27.5

us-gaap:InterestExpense dei:LegalEntity

ida:IdahoPowerCompany


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value222220202122212121202121202020192020212020202019191919192020191919171717171718191817
Percentage of InterestExpense100.099.9100.099.9100.0100.099.999.999.999.999.999.899.999.999.999.899.799.799.799.899.799.799.899.799.899.799.799.599.699.599.599.399.599.499.499.399.499.399.499.199.799.6
Percentage of RegulatedAndUnregulatedOperatingRevenue5.27.17.10.05.67.06.30.05.36.26.80.05.16.26.80.05.46.57.50.05.56.17.30.05.26.36.80.05.46.87.30.05.86.87.10.05.67.47.50.06.07.2
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


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
Value21212121221919202121212121202020202020202020202021202020202020202019191920191919192021201919
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue5.86.70.05.16.96.80.05.36.76.00.05.26.36.70.05.06.16.70.05.56.57.40.05.66.37.40.05.36.36.90.05.56.87.40.05.97.98.10.06.38.38.30.06.58.07.7

us-gaap:InterestExpenseDebt dei:LegalEntity

ida:IdahoPowerCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value212121212219192021212121212020202020202020202020212020202020202020191919201919191920212019
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue5.86.70.05.16.96.80.05.36.76.00.05.26.36.70.05.06.16.70.05.56.57.40.05.66.37.40.05.36.36.90.05.56.87.40.05.97.98.10.06.38.38.30.06.58.0
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value16251626181919231922192218201920182018202118211723162117211723172017201618141815181821132013
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 RegulatedAndUnregulatedOperatingRevenue4.58.00.06.25.86.80.06.16.16.50.05.55.56.70.05.15.66.90.05.46.96.50.04.86.96.10.04.46.85.90.04.56.86.40.05.17.26.20.05.17.87.30.04.48.55.1

us-gaap:InterestPaidNet dei:LegalEntity

ida:IdahoPowerCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1625162618191923192219221820192018201820211821172316211621172217201620161814181518182113
Percentage of InterestPaidNet99.7100.299.9100.099.9100.099.9100.0100.099.999.999.999.999.999.899.999.999.999.899.799.799.699.899.799.799.799.799.799.799.699.699.599.599.499.399.499.499.499.399.399.399.399.299.5
Percentage of RegulatedAndUnregulatedOperatingRevenue4.58.00.06.25.86.80.06.16.16.50.05.55.56.70.05.15.66.80.05.46.96.40.04.76.96.00.04.46.85.90.04.56.76.40.05.07.16.20.05.07.87.30.04.4
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


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
Value7044371026037478953422610262363890493333835625317366233486442731714533169235248.985107202920673916
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue19.414.20.024.018.912.90.023.316.812.20.025.018.311.70.022.215.010.90.022.317.89.20.019.919.68.40.022.714.09.40.018.815.012.70.027.613.910.30.034.68.911.80.021.716.26.3

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value68445836
Percentage of NetIncomeLoss98.399.097.698.1
Percentage of RegulatedAndUnregulatedOperatingRevenue19.114.018.512.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany19.214.118.512.7

us-gaap:AllOtherSegments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.2010.4621.4660.714
Percentage of NetIncomeLoss1.71.02.41.9
Percentage of RegulatedAndUnregulatedOperatingRevenue0.30.10.50.2
Percentage of RegulatedAndUnregulatedOperatingRevenue us-gaap:AllOtherSegments118.295.1133.3137.3

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


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
Value251000.0-31000.042000.0271000.0270000.0-32000.0-63000.0342000.0244000.0-49000.089000.0360000.0305000.0-31000.0159000.0442000.0265000.0-96000.0-59000.0-83000.0140000.0-199000.0-159000.0-69000.0110000.0-86000.0-9000.0345000.0157000.0-219000.0-92000.0-15000.0137000.0-153000.0-47000.0195000.0137000.0-112000.0-1000.0347000.076000.0-252000.0-150000.0-10000.028000.0-206000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.1-0.00.00.10.1-0.00.00.10.1-0.00.00.10.1-0.00.00.10.1-0.00.0-0.00.0-0.10.0-0.00.0-0.00.00.10.0-0.10.0-0.00.0-0.10.00.10.1-0.00.00.10.0-0.10.0-0.00.0-0.1

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-06-302020-03-31
Value-11.06-11.223-11.848-10.224
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue-3.1-3.6-3.7-3.5

us-gaap:NonoperatingIncomeExpense dei:LegalEntity

ida:IdahoPowerCompany


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-11.662-11.035-74.768109.5539.73610108.8989.5092.676116.2779.0477.889.4555.035.965.106165.0324.0817.4928.2336.5924.1717.6088.2873.5894.897177.7591.9354.0914.5565.6786.1991013101.5745.1747.2858.4944.939
Percentage of NonoperatingIncomeExpense105.498.30.00.0-80.6-95.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RegulatedAndUnregulatedOperatingRevenue-3.2-3.50.02.53.03.30.02.82.82.70.02.71.82.90.02.31.52.00.04.51.61.50.02.22.01.50.02.21.11.70.02.00.61.50.01.72.44.30.03.20.72.10.02.72.0
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


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
Value267254261300239239238272245292263293257259252287253251240274238237236264250236262276245244258265224205220222195198222238200201192220205218
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue74.380.70.070.775.182.30.070.577.383.40.071.875.683.70.070.476.283.20.073.775.684.40.071.674.484.60.072.377.483.40.069.773.977.60.066.776.982.40.076.985.480.10.071.284.986.5

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
Value9261531247951541147158481158250531207950539776434810485422710571483711579593011158428.46571345039883634
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 RegulatedAndUnregulatedOperatingRevenue25.719.30.029.324.917.70.029.522.716.60.028.224.416.30.029.623.816.80.026.324.415.60.028.425.615.40.027.722.616.60.030.326.122.40.033.323.117.60.023.114.619.90.028.815.113.5

us-gaap:OperatingIncomeLoss dei:LegalEntity

ida:IdahoPowerCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value91615212479525511371584811482515512281534910079475110788463010774513911881623811158429.086703450398936
Percentage of OperatingIncomeLoss99.5100.397.8100.099.8101.2101.799.8100.0101.1100.799.899.8101.0104.3101.3102.4105.493.9103.1103.2107.5106.8102.8103.3107.6109.2101.8103.6106.9106.8102.3103.2105.5127.399.899.5101.1107.398.699.6101.2102.4100.699.4
Percentage of RegulatedAndUnregulatedOperatingRevenue25.519.40.029.324.917.90.029.522.616.80.028.124.316.50.030.024.317.70.027.125.216.80.029.226.416.50.028.223.417.70.031.027.023.70.033.323.017.80.022.714.520.20.029.015.1
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value0.460.2410.8170.7161.0430.9321.5031.8251.062.114-3.0660.350.309-0.4592.0612.2562.3712.3972.82.6812.1892.2042.1051.2221.8711.9611.5951.1931.2522.288131.5671.5880.826-11.8822.9286.5716.5935.626.015.0414.5384.1233.553.0124.481
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.10.10.00.20.30.30.00.50.30.60.00.10.1-0.10.00.60.70.80.00.70.70.80.00.30.60.70.00.30.40.80.00.40.50.30.00.92.62.70.01.92.11.80.01.11.21.8

us-gaap:OtherNonoperatingIncomeExpense dei:LegalEntity

ida:IdahoPowerCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.4230.1912.1270.1830.4170.0110.4080.770.1650.922-3.934-0.398-0.391-1.128-0.548-0.408-0.244-0.526-0.099-0.328-0.707-0.811-0.855-1.755-1.316-1.144-0.807-1.538-1.591-0.42810-1.077-1.215-2.158-1.367-0.769-1.367-1.479-1.793-0.293-1.363-1.013-0.931-0.766-1.41
Percentage of OtherNonoperatingIncomeExpense92.079.3260.325.640.01.227.142.215.643.6128.3-113.7-126.5245.8-26.6-18.1-10.3-21.9-3.5-12.2-32.3-36.8-40.6-143.6-70.3-58.3-50.6-128.9-127.1-18.778.4-68.7-76.5-261.311.5-26.3-20.8-22.4-31.9-4.9-27.0-22.3-22.6-21.6-46.8
Percentage of RegulatedAndUnregulatedOperatingRevenue0.10.10.00.00.10.00.00.20.10.30.0-0.1-0.1-0.40.0-0.1-0.1-0.20.0-0.1-0.2-0.30.0-0.5-0.4-0.40.0-0.4-0.5-0.10.0-0.3-0.4-0.80.0-0.2-0.5-0.60.0-0.1-0.6-0.40.0-0.2-0.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value7044371026037479053422610262363991503333835625317366233487442731714533169235248.984107202920673915
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 RegulatedAndUnregulatedOperatingRevenue19.514.20.024.119.012.90.023.416.912.20.025.118.411.60.022.315.010.90.022.317.99.10.019.819.78.40.022.814.19.30.018.815.012.60.027.613.910.30.034.78.911.70.021.716.26.3

us-gaap:ProfitLoss dei:LegalEntity

ida:IdahoPowerCompany


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6844371005836438751412510060353788483228805425317164233484422727704434188934259.331042029186438
Percentage of ProfitLoss97.999.098.998.197.198.292.897.595.897.597.897.796.999.395.297.096.698.487.196.497.2100.099.397.997.2100.598.897.095.4102.686.998.098.5102.0109.997.197.9104.0103.997.698.7101.293.596.399.0
Percentage of RegulatedAndUnregulatedOperatingRevenue19.114.00.023.618.512.60.022.816.111.90.024.517.811.60.021.614.510.70.021.517.49.10.019.419.18.40.022.113.49.50.018.414.812.90.026.813.610.70.033.98.811.90.020.916.1
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Profit
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.6421.4660.7141.8971.981.1022.0371.6510.2852.3051.450.623.0711.4390.1951.6091.74-0.0322.2891.887-0.4961.4480.53-0.5132.4730.592-0.889-0.3452.1950.2-0.1081.4572.4850.381
Percentage of ProfitLoss1.62.41.92.13.72.62.02.60.82.52.91.93.72.60.82.22.6-0.12.64.2-1.82.01.2-1.52.71.7-3.6-3.82.01.0-0.47.23.71.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.40.50.20.50.60.30.50.50.10.60.40.20.80.50.10.40.5-0.00.60.6-0.20.40.2-0.20.70.2-0.40.00.70.1-0.00.00.80.2
Percentage of RegulatedAndUnregulatedOperatingRevenue us-gaap:AllOtherSegments150.5133.3137.3146.8176.6201.1140.9131.844.1138.1117.1106.9537.8140.450.0248.3172.8-5.2153.6167.3-124.3180.348.5-91.6196.051.3-135.30.0138.518.9-25.00.0279.539.6

Regulated And Unregulated Operating Revenue

us-gaap:RegulatedAndUnregulatedOperatingRevenue

us-gaap:RegulatedAndUnregulatedOperatingRevenue


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value360316315425318291292386316350311408339310305408333302293372315280285369336279289382317292296381303264250334254241230309234251231309241252
Percentage of RegulatedAndUnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedAndUnregulatedOperatingRevenue us-gaap:StatementBusinessSegments

ida:IdahoPowerCompany


Regulated
Period End2021-06-302021-03-312020-06-302020-03-31
Value359315317290
Percentage of RegulatedAndUnregulatedOperatingRevenue99.799.899.799.8
Percentage of RegulatedAndUnregulatedOperatingRevenue99.799.899.799.8
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany100.0100.0100.0100.0

us-gaap:AllOtherSegments


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.0160.4860.6781.0911.10.520.4821.2921.1210.5480.8251.4461.2530.6461.1061.6691.2380.580.6810.5711.0250.390.5070.6481.0070.6210.8561.491.1280.3990.6610.8031.0920.560.8631.2621.1540.6570.9521.5851.0590.4320.6230.8890.963
Percentage of RegulatedAndUnregulatedOperatingRevenue0.30.20.20.30.30.20.20.30.40.20.30.40.40.20.40.40.40.20.20.20.30.10.20.20.30.20.30.40.40.10.20.20.40.20.30.40.50.30.40.50.50.20.30.30.4
Percentage of RegulatedAndUnregulatedOperatingRevenue0.30.20.20.30.30.20.20.30.40.20.30.40.40.20.40.40.40.20.20.20.30.10.20.20.30.20.30.40.40.10.20.20.40.20.30.40.50.30.40.50.50.20.30.30.4
Percentage of RegulatedAndUnregulatedOperatingRevenue us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


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
Value357291302402310270275367307335292398331289294405326293
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue99.392.295.894.897.692.893.995.097.195.793.897.697.593.496.399.498.097.1

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:ProductOrService

ida:CommercialRetailRevenue, ida:IdahoFixedCostAdjustment


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
Value0.1650.4823.4950.330.3970.4840.3140.330.3490.3420.3410.3050.2910.3620.270.220.2760.111
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.21.20.10.10.20.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.00.21.10.10.10.20.10.10.10.10.10.10.10.10.10.10.10.0
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:CommercialRetailRevenue ida:IdahoFixedCostAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:CommercialRetailRevenue, ida:Retailrevenues


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
Value777274826769708070737385767576897874
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.724.824.520.421.625.725.821.923.121.825.021.523.226.126.022.024.225.3
Percentage of RegulatedAndUnregulatedOperatingRevenue21.622.923.519.321.123.924.220.822.420.923.521.022.624.425.121.923.724.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:CommercialRetailRevenue ida:Retailrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:DeferredRevenueAfudc, ida:Retailrevenues


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
Value-1.927-2.119-1.919-2.815-1.927-2.119-1.919-2.815-1.927-2.119-1.919-2.815-1.462-2.584-2.34-3.432-2.349-2.584
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.5-0.7-0.6-0.7-0.6-0.8-0.7-0.8-0.6-0.6-0.7-0.7-0.4-0.9-0.8-0.8-0.7-0.9
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.5-0.7-0.6-0.7-0.6-0.7-0.7-0.7-0.6-0.6-0.6-0.7-0.4-0.8-0.8-0.8-0.7-0.9
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:DeferredRevenueAfudc ida:Retailrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:IndustrialRetailRevenue, ida:Retailrevenues


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
Value484545504342434745454550484647524945
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.415.615.012.413.915.815.712.814.813.615.412.614.816.116.013.015.315.5
Percentage of RegulatedAndUnregulatedOperatingRevenue13.314.414.311.813.514.714.712.214.413.014.512.314.415.015.412.914.915.0
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IndustrialRetailRevenue ida:Retailrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:IrrigationRetailRevenue, ida:Retailrevenues


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
Value761.0865.0888601.3753.23782480.9993.59588651.0713.66789560.925
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.50.41.721.919.30.51.222.515.90.31.222.319.60.41.222.017.20.3
Percentage of RegulatedAndUnregulatedOperatingRevenue21.30.31.620.718.90.51.121.415.40.31.221.819.10.31.221.916.80.3
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IrrigationRetailRevenue ida:Retailrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:ResidentialRetailRevenue, ida:IdahoFixedCostAdjustment


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
Value-0.71515-14.7394.8964.13515106.4467.23311104.7895.508139.252-0.2643.2055.126
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.25.4-4.91.21.35.83.91.82.43.43.71.21.74.73.1-0.11.01.7
Percentage of RegulatedAndUnregulatedOperatingRevenue-0.25.0-4.71.21.35.43.61.72.33.23.51.21.64.43.0-0.11.01.7
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:ResidentialRetailRevenue ida:IdahoFixedCostAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:ResidentialRetailRevenue, ida:Retailrevenues


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
Value122154149143109144138133104150137137109148142145112152
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.353.149.335.735.253.650.336.434.044.847.034.432.951.448.335.934.551.8
Percentage of RegulatedAndUnregulatedOperatingRevenue34.149.047.333.834.349.847.334.633.142.944.133.632.148.046.535.633.850.3
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:ResidentialRetailRevenue ida:Retailrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

ida:Energyefficiencyprogramrevenues


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
Value6.6589.0271010119.475108.43911109.9959.3098.8027.597129.883106.327
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.93.13.52.63.83.53.72.33.73.03.42.32.72.64.32.43.22.2
Percentage of RegulatedAndUnregulatedOperatingRevenue1.82.93.32.53.73.33.52.23.62.93.22.32.62.44.12.43.22.1
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:Energyefficiencyprogramrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:IdahoFixedCostAdjustment


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
Value0.55-16.304-10.001-5.226-4.532-16.194-10.913-6.776-7.582-11.651-11.125-5.094-5.799-13.905-9.5220.044-3.481-5.237
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.2-5.6-3.3-1.3-1.5-6.0-4.0-1.8-2.5-3.5-3.8-1.3-1.8-4.8-3.20.0-1.1-1.8
Percentage of RegulatedAndUnregulatedOperatingRevenue0.2-5.2-3.2-1.2-1.4-5.6-3.7-1.8-2.4-3.3-3.6-1.2-1.7-4.5-3.10.0-1.0-1.7
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoFixedCostAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:Otherrevenues


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
Value7.3646.4276.7826.9357.1996.2166.5196.7996.8286.2956.5526.5116.2855.8925.9966.2956.1875.746
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.22.21.72.32.32.41.92.21.92.21.61.92.02.01.61.92.0
Percentage of RegulatedAndUnregulatedOperatingRevenue2.02.02.11.62.32.12.21.82.21.82.11.61.81.92.01.51.91.9
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:Otherrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:Retailrevenues


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
Value323271271361277256253340268267254358298264267373295270
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax90.493.289.889.789.494.992.292.887.279.886.989.890.191.490.892.190.491.9
Percentage of RegulatedAndUnregulatedOperatingRevenue89.785.986.185.087.288.186.688.284.776.481.487.687.885.387.491.588.689.3
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:Retailrevenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:Transmissionserviceswheeling


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
Value15141216111013121215151713111110118.859
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.35.04.24.23.73.84.83.44.14.75.24.44.03.93.92.73.73.0
Percentage of RegulatedAndUnregulatedOperatingRevenue4.34.64.14.03.63.64.53.24.04.54.94.33.93.73.72.63.62.9
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:Transmissionserviceswheeling0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

ida:Wholesaleenergysales


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
Value4.3086.25910126.8663.9082.5055.3211647171210146.7295.1016.0037.965
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.22.13.53.02.21.40.91.45.214.16.13.13.14.92.31.31.82.7
Percentage of RegulatedAndUnregulatedOperatingRevenue1.22.03.42.92.21.30.91.45.113.55.73.03.04.52.21.21.82.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:Wholesaleenergysales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Unregulated Operating Revenue

us-gaap:UnregulatedOperatingRevenue

us-gaap:UnregulatedOperatingRevenue


Unregulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1016000.0486000.0678000.01091000.01100000.0520000.0482000.01292000.01121000.0548000.0825000.01446000.01253000.0646000.01106000.01669000.01238000.0
Percentage of UnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.30.20.20.30.30.20.20.30.40.20.30.40.40.20.40.40.4

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
Value72017078709569307020660966416502646063876382628862066261604563676277622962896129608161306023593758975971571654985389536153645591548853155319520751034990496048264642459046764238
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

us-gaap:Assets dei:LegalEntity

ida:IdahoPowerCompany


Assetsdei:
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
Value700668936906676968606453649463496325625462546178613362115995632162446178623660686023607359685841580458705626540953035275526655035398521752155119499848854856471945294568
Percentage of Assets97.397.497.397.797.797.697.897.797.997.998.098.298.899.299.299.399.599.299.299.099.099.199.198.498.498.398.498.498.498.498.298.498.498.298.098.398.097.997.997.897.697.7
Percentage of Assets97.397.497.397.797.797.697.897.797.997.998.098.298.899.299.299.399.599.299.299.099.099.199.198.498.498.398.498.498.498.498.298.498.498.298.098.398.097.997.997.897.697.7
Percentage of Assets ida:IdahoPowerCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value2626254324132305
Percentage of Assets37.038.337.838.1
Percentage of Assets37.038.337.838.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

ida:Eliminations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value-56.082-59.485-63.926-73.578-35.186
Percentage of Assets-0.8-0.8-0.9-1.1-0.6
Percentage of Assets-0.8-0.8-0.9-1.1-0.6
Percentage of Assets ida:Eliminations100.0100.0100.0100.0100.0

ida:IdahoPowerCompany


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312011-12-31
Value70066893690664946254625461786133621159956321624461786236606860236073596858355797586456205408529952735266550352154856
Percentage of Assets97.397.497.397.897.998.098.298.899.299.299.399.599.299.299.099.099.199.198.398.398.298.398.498.398.498.298.498.097.9
Percentage of Assets97.397.497.397.897.998.098.298.899.299.299.399.599.299.299.099.099.199.198.398.398.298.398.498.398.498.298.498.097.9
Percentage of Assets ida:IdahoPowerCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllOtherSegments


Assetsus-gaap:
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
Value2502442532472342292201961701691631471531441431168574738278767112511512410910210310110999102110115103119120122124126131192
Percentage of Assets3.53.53.63.63.33.53.33.02.62.72.62.32.52.32.41.81.41.21.21.41.31.21.22.12.02.11.91.91.91.92.01.81.92.12.22.02.32.42.52.62.72.84.5
Percentage of Assets3.53.53.63.63.33.53.33.02.62.72.62.32.52.32.41.81.41.21.21.41.31.21.22.12.02.11.91.91.91.92.01.81.92.12.22.02.32.42.52.62.72.84.5
Percentage of Assets us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value-87.161-74.323-73.191-73.578-43.896-35.009-36.254-35.186-37.048-80.914-94.488-93.726-71.452-53.124-23.172-19.984-22.121-20.163-19.445-17.225-22.329-15.961-16.87-12.513-13.363-12.774-13.471-11.389-12.492-12.233-12.604-11.943-14.864-15.289-16.176-18.908-16.511-13.744-23.891-27.362
Percentage of Assets-1.3-1.1-1.1-1.1-0.7-0.5-0.6-0.6-0.6-1.3-1.5-1.6-1.1-0.8-0.4-0.3-0.4-0.3-0.3-0.3-0.4-0.3-0.3-0.2-0.2-0.2-0.3-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.4-0.3-0.3-0.5-0.6
Percentage of Assets-1.3-1.1-1.1-1.1-0.7-0.5-0.6-0.6-0.6-1.3-1.5-1.6-1.1-0.8-0.4-0.3-0.4-0.3-0.3-0.3-0.4-0.3-0.3-0.2-0.2-0.2-0.3-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.4-0.3-0.3-0.5-0.6
Percentage of Assets us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities 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
Value72017078709569307020660966416502646063876382628862066261604563676277622962896129608161306023593758975971571654985389536153645591548853155319520751034990496048264642459046764238
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

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

ida:IdahoPowerCompany


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
Value700668936906676968606453649463496325625462546178613362115995632162446178623660686023607359685841580458705626540953035275526655035398521752155119499848854856471945294568
Percentage of LiabilitiesAndStockholdersEquity97.397.497.397.797.797.697.897.797.997.998.098.298.899.299.299.399.599.299.299.099.099.199.198.498.498.398.498.498.498.498.298.498.498.298.098.398.097.997.997.897.697.7
Percentage of Assets97.397.497.397.797.797.697.897.797.997.998.098.298.899.299.299.399.599.299.299.099.099.199.198.498.498.398.498.498.498.498.298.498.498.298.098.398.097.997.997.897.697.7
Percentage of Assets ida:IdahoPowerCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value2626254324132305
Percentage of LiabilitiesAndStockholdersEquity37.038.337.838.1
Percentage of Assets37.038.337.838.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value260625692559256524952467246424642403238023702368229322572251224721822159215321482089205720572049199819541953194918811857185018591803177517581769169216701657165615631549153213971302
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.236.336.137.035.637.337.137.937.237.337.137.737.036.037.235.334.834.734.235.134.433.634.234.533.932.734.235.434.934.634.533.332.933.433.134.033.233.533.434.333.733.832.833.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value2559246423702251
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets36.137.137.137.2
Percentage of Assets srt:ParentCompany97.596.998.297.7

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
Value672593642684828472565604599576597582539637443457420409440459496587462494528692442475446493476566520384367365358323310309326336460310
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 Assets9.38.49.19.911.87.28.59.39.39.09.49.38.710.27.37.26.76.67.07.58.29.67.78.39.011.67.78.68.39.28.910.19.57.26.97.07.06.56.36.47.07.39.97.3

us-gaap:AssetsCurrent dei:LegalEntity

ida:IdahoPowerCompany


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value539463510583726366451486499475502507502622429450425395425440480572450441479636397434409456429554508366347367346312304302317463
Percentage of AssetsCurrent80.278.179.485.287.777.479.880.683.382.584.187.193.197.696.998.4101.496.896.795.896.897.497.489.390.891.990.091.491.692.590.197.897.695.494.7100.596.896.897.997.997.3100.5
Percentage of Assets7.56.57.28.410.35.56.87.57.77.47.98.18.19.97.17.16.86.46.87.27.99.37.57.48.110.77.07.97.68.58.09.99.36.96.57.16.86.36.16.36.89.9
Percentage of Assets ida:IdahoPowerCompany7.76.77.48.610.65.76.97.77.97.68.08.28.210.07.27.16.86.46.87.38.09.47.57.68.310.87.18.07.78.78.210.19.47.06.77.26.96.46.36.47.010.1

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value13311710182
Percentage of AssetsCurrent20.820.816.918.5
Percentage of Assets1.91.81.61.4
Percentage of Assets srt:ParentCompany5.14.64.23.6

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
Value259240275312460138217260239231267261183307761043247611009021911412113031756111508878186136242620148.857273158932281852941528.8287.966
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 Assets3.63.43.94.56.62.13.34.03.73.64.24.23.04.91.31.60.50.81.01.61.53.61.92.02.25.31.02.00.91.61.53.32.50.50.50.40.30.20.60.61.32.04.90.00.00.01.30.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue dei:LegalEntity

ida:IdahoPowerCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value1271341652363583298143140131165186149276441013044448887217110110125312461024284661781321617136.2272.9911924539122417825213.141
Percentage of CashAndCashEquivalentsAtCarryingValue48.956.160.275.777.923.345.555.158.556.761.971.381.490.058.297.593.394.871.888.296.298.996.590.895.698.582.292.784.695.885.195.797.168.965.067.243.333.869.479.891.896.998.196.385.240.835.6
Percentage of Assets1.81.92.33.45.10.51.52.22.22.12.63.02.44.40.71.60.50.70.71.51.43.51.81.92.15.20.81.90.81.61.23.22.40.30.30.30.10.10.40.51.22.04.80.00.00.50.0
Percentage of Assets ida:IdahoPowerCompany1.82.02.43.55.20.51.52.32.22.12.63.02.44.50.71.60.50.70.71.51.43.61.91.92.25.30.81.90.81.61.33.22.40.30.30.30.10.10.40.51.20.04.90.00.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1061159829152.028
Percentage of CashAndCashEquivalentsAtCarryingValue38.753.037.038.624.61.8
Percentage of Assets1.51.71.50.50.20.0
Percentage of Assets srt:ParentCompany4.14.54.11.30.00.0

Short Term Investments

us-gaap:ShortTermInvestments us-gaap:ConsolidatedEntities

us-gaap:ShortTermInvestments

srt:ParentCompany


Short
Period End2020-12-31
Value25
Percentage of ShortTermInvestments100.0
Percentage of Assets0.4
Percentage of Assets srt:ParentCompany1.0

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
Value8473721037867729983977793878475101858071867669739179747993989897111697866806268667561666274
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 Assets1.21.01.01.51.11.01.11.51.31.51.21.51.41.31.21.61.41.31.11.41.31.11.21.51.31.21.41.71.81.81.82.01.31.51.21.51.21.41.31.61.31.51.31.8

us-gaap:AccountsReceivableNetCurrent dei:LegalEntity

ida:IdahoPowerCompany


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value847372103786772998397779387847510185807186766973917974799398989711169786680626866756162
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.01.01.51.11.01.11.51.31.51.21.51.41.31.21.61.41.31.11.41.31.11.21.51.31.21.41.71.81.81.82.01.31.51.21.51.21.41.31.61.31.3
Percentage of Assets ida:IdahoPowerCompany1.21.11.11.51.11.11.11.61.31.61.21.51.41.41.31.61.41.31.11.41.31.11.21.61.41.31.41.71.81.91.92.01.31.51.31.61.31.41.41.61.41.4

Receivables Net Current

us-gaap:ReceivablesNetCurrent us-gaap:ConsolidatedEntities

us-gaap:ReceivablesNetCurrent

srt:ParentCompany


Receivables
Period End2020-12-312019-12-312018-12-312017-12-31
Value1.6042.1252.04652
Percentage of ReceivablesNetCurrent100.0100.0100.0100.0
Percentage of Assets0.00.00.00.9
Percentage of Assets srt:ParentCompany0.10.10.12.3

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
Value122.761.9952.4530.160.0140.4050.9164.2854.8193.6550.9020.7570.0830.0180.1010.3012.3165.9612.9972.5190.0740.2880.412.1130.1940.6031.4722.252.4392.4013.1162.7672.544.9485.6282.6294.6174.6064.5071.2841.2944.6672.666
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 Assets0.20.00.00.00.00.00.00.00.10.10.10.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.10.10.10.10.10.10.00.00.10.1

us-gaap:OtherAssetsCurrent dei:LegalEntity

ida:IdahoPowerCompany


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
Value122.761.9952.4530.160.0140.4050.9164.2854.8193.6550.9020.7570.0830.0180.1010.2992.3175.9622.9972.5190.0740.2880.412.1120.1940.6031.4732.252.4392.4013.1162.7672.5414.955.6282.6294.6174.6064.5071.2841.238
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.026.5
Percentage of Assets0.20.00.00.00.00.00.00.00.10.10.10.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.10.10.10.10.10.10.00.0
Percentage of Assets ida:IdahoPowerCompany0.20.00.00.00.00.00.00.00.10.10.10.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.10.10.10.10.10.10.00.0

us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.1070.0980.0980.098
Percentage of OtherAssetsCurrent5.424.22.7544.4
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Assets Noncurrent

us-gaap:AssetsNoncurrent us-gaap:ConsolidatedEntities

us-gaap:AssetsNoncurrent

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value24461734
Percentage of AssetsNoncurrent100.0100.0100.0100.0
Percentage of Assets0.30.70.30.6
Percentage of Assets srt:ParentCompany0.91.80.71.5

Construction In Progress Gross

us-gaap:ConstructionInProgressGross

us-gaap:ConstructionInProgressGross


Construction
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value600617597599552
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0
Percentage of Assets8.38.78.48.78.3

us-gaap:ConstructionInProgressGross dei:LegalEntity

ida:IdahoPowerCompany


Construction
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value600617597599552
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0
Percentage of Assets8.38.78.48.78.3
Percentage of Assets ida:IdahoPowerCompany8.69.08.68.98.5

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value47774735470946414594455745314476445144154395435243314300428342404213419341714095404540093992397839343864383337783740369236653621358735543536350634733420340633563306323231612917
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.366.966.467.065.469.068.268.868.969.168.969.269.868.770.966.667.167.366.366.866.565.466.367.066.764.767.168.769.468.968.364.865.466.966.567.368.168.568.769.571.270.467.668.8

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity

ida:IdahoPowerCompany


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
Value476447224696462445774540451444594433439743784334431342854268422541974177415640794028399339753961391738463816376137223675364736043569353635183488345434013387333732873142
Percentage of PropertyPlantAndEquipmentNet99.799.799.799.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.599.599.599.599.599.599.599.599.599.599.599.499.499.499.499.4
Percentage of Assets66.266.766.266.765.268.768.068.668.668.868.668.969.568.470.666.466.967.166.166.666.365.166.066.766.464.466.868.469.168.668.064.565.066.566.167.067.768.268.369.170.867.2
Percentage of Assets ida:IdahoPowerCompany68.068.568.068.366.770.469.570.270.170.370.070.270.369.071.266.867.267.666.667.266.965.766.667.867.565.567.869.570.269.769.365.566.167.867.568.269.169.669.870.772.668.8

Long Term Investments

us-gaap:LongTermInvestments

us-gaap:LongTermInvestments


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
Value12912212612513011798899494101101106109115111118117125131144136140160159161165155162157159174178181189190198195199192198202202195
Percentage of LongTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.71.81.81.91.81.51.41.51.51.61.61.71.81.91.81.91.92.02.12.42.22.32.72.72.72.92.83.02.93.03.13.23.43.63.73.93.94.04.04.34.44.34.6

us-gaap:LongTermInvestments dei:LegalEntity

ida:IdahoPowerCompany


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value8585878794898776808390899394999410199107111125117121138137139142130137131131123123124128
Percentage of LongTermInvestments65.969.569.269.872.476.488.785.285.588.589.087.787.986.286.384.485.085.185.885.386.585.986.286.786.486.686.384.184.483.682.770.469.368.667.8
Percentage of Assets1.21.21.21.31.31.41.31.21.31.31.41.41.51.51.71.51.61.61.71.82.11.92.02.32.32.32.52.42.62.52.52.22.32.32.4
Percentage of Assets ida:IdahoPowerCompany1.21.21.31.31.41.41.31.21.31.31.41.41.51.51.71.51.61.61.71.82.11.92.02.42.42.42.52.42.62.52.52.22.32.42.5

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:ParentCompany


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value2468237922942189
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0
Percentage of Assets34.835.835.936.2
Percentage of Assets srt:ParentCompany94.093.695.194.9

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
Value6159586160606161606262626257555152525253554040565942394243424246464849484739403940414140
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 Assets0.80.80.80.90.90.90.91.00.91.01.01.01.00.90.90.80.80.80.80.90.90.70.71.01.00.70.70.80.80.80.80.80.80.90.90.90.90.80.80.80.90.90.91.0

us-gaap:OtherAssetsNoncurrent dei:LegalEntity

ida:IdahoPowerCompany


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
Value565553575656565756575858575354727372717071595671725439424442414445474747453838383940
Percentage of OtherAssetsNoncurrent92.792.592.392.692.492.492.392.892.692.792.792.692.591.998.3142.2140.0137.8135.5132.0128.6146.1140.6125.6121.8126.8100.4100.4100.5100.497.397.597.597.497.497.497.396.796.697.697.697.4
Percentage of Assets0.80.80.80.80.80.90.80.90.90.90.90.90.90.80.91.11.21.21.11.21.21.00.91.21.20.90.70.80.80.80.80.80.80.90.90.90.90.80.80.80.90.9
Percentage of Assets ida:IdahoPowerCompany0.80.80.80.80.80.90.90.90.90.90.90.90.90.90.91.21.21.21.11.21.21.00.91.21.20.90.70.80.80.80.80.80.80.90.90.90.90.80.80.80.90.9

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.3120.4290.2770.374
Percentage of OtherAssetsNoncurrent0.50.70.40.7
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4749504243444233343536272730
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.70.60.60.70.60.50.50.60.60.40.40.5

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4749504243444233343536272730
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.70.60.60.70.60.50.50.60.60.40.40.5
Percentage of Assets us-gaap:FairValueInputsLevel10.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value12281120998167110848083110757468907276631067777609581896597828272918877659093927110090876410383
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.21.71.41.21.01.71.31.21.31.71.21.21.11.51.11.21.01.71.31.31.01.61.41.51.11.71.51.51.31.71.61.41.21.71.81.81.42.01.91.91.42.22.0

us-gaap:AccountsPayableCurrent dei:LegalEntity

ida:IdahoPowerCompany


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value122811209981671108480821107574688971766310577776094808864968281719087756489929170998986102
Percentage of AccountsPayableCurrent99.999.999.999.999.999.899.999.899.899.999.899.799.999.999.799.799.999.899.799.699.399.199.499.499.298.999.299.199.199.098.999.098.698.399.499.599.599.399.399.599.199.4
Percentage of Assets1.71.21.71.41.21.01.71.31.21.31.71.21.21.11.51.11.21.01.71.31.31.01.61.41.51.11.71.51.51.31.71.61.41.21.71.81.81.42.01.91.92.2
Percentage of Assets ida:IdahoPowerCompany1.81.21.71.51.21.01.71.31.31.31.81.21.21.11.51.11.21.01.71.31.31.01.61.41.51.11.71.51.51.41.71.61.41.21.71.81.81.42.11.91.92.2

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent us-gaap:ConsolidatedEntities

us-gaap:AccruedIncomeTaxesCurrent

srt:ParentCompany


Accrued
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.7455.6228.35417
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0
Percentage of Assets0.00.10.10.3
Percentage of Assets srt:ParentCompany0.10.20.30.8

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value41342930323228
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.40.40.50.50.4

us-gaap:ContractWithCustomerLiabilityCurrent dei:LegalEntity

ida:IdahoPowerCompany


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value41342930323228
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.40.40.50.50.4
Percentage of Assets ida:IdahoPowerCompany0.60.50.40.40.50.50.4

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
Value331261287302447247374291295273258250238331200225190180249205224311242205233347241239236246250335313255351268296283368254339331449218
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 Assets4.63.74.14.46.43.75.64.54.64.34.14.03.85.33.33.53.02.94.03.33.75.14.03.54.05.84.24.44.44.64.76.05.74.86.65.25.85.77.45.37.37.29.65.1

us-gaap:LiabilitiesCurrent dei:LegalEntity

ida:IdahoPowerCompany


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
Value312249274285440244375273291267259234274386257236213182249200201287221207210313216207203203195277254187279216237221313198271379
Percentage of LiabilitiesCurrent94.295.395.694.298.498.8100.293.898.597.9100.293.6115.3116.4128.0104.9112.1100.8100.097.489.892.291.6101.089.990.389.786.786.382.378.182.981.073.679.680.679.977.985.277.979.984.6
Percentage of Assets4.33.53.94.16.33.75.74.24.54.24.13.74.46.24.33.73.42.94.03.33.34.73.73.53.65.33.83.83.83.83.65.04.63.55.34.24.64.46.34.15.88.1
Percentage of Assets ida:IdahoPowerCompany4.53.64.04.26.43.85.84.34.64.34.13.84.56.24.33.73.43.04.03.33.34.73.73.63.65.33.93.83.83.83.75.04.73.65.44.24.74.56.54.26.08.3

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.6736.6189.25318
Percentage of LiabilitiesCurrent1.31.83.69.0
Percentage of Assets0.10.10.10.3
Percentage of Assets srt:ParentCompany0.10.30.40.8

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
Value29273016211916121512118.9361111109.111119.76310121816293532232525221737333424606172606268685846
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 Assets0.40.40.40.20.30.30.30.20.20.20.20.10.20.20.20.10.20.20.20.20.20.30.30.50.60.50.40.50.50.40.30.70.60.70.51.21.21.51.21.31.51.51.21.1

us-gaap:OtherLiabilitiesCurrent dei:LegalEntity

ida:IdahoPowerCompany


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
Value17161615201815121412108.19811109.5568.56811109.1039.712171534413829252923173733342359607259626748
Percentage of OtherLiabilitiesCurrent59.062.554.395.096.696.994.093.395.295.091.991.795.195.793.994.296.296.893.294.596.397.995.3117.1116.2118.0122.9100.6114.5105.196.298.598.698.897.499.099.199.498.899.099.283.9
Percentage of Assets0.20.20.20.20.30.30.20.20.20.20.20.10.20.20.20.10.20.20.10.20.20.30.30.60.70.60.50.50.50.40.30.70.60.60.41.11.21.51.21.31.51.0
Percentage of Assets ida:IdahoPowerCompany0.20.20.20.20.30.30.20.20.20.20.20.10.20.20.20.10.20.20.10.20.20.30.30.60.70.70.50.50.60.40.30.70.60.70.51.21.21.51.21.31.51.1

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.9280.9960.8990.626
Percentage of OtherLiabilitiesCurrent3.06.08.16.1
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value4334195228211153312412472821115719171120121710211517102627381311
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.30.80.40.30.20.80.50.40.20.80.50.30.20.90.30.30.20.30.20.30.20.40.30.30.20.50.50.70.20.2

us-gaap:TaxesPayableCurrent dei:LegalEntity

ida:IdahoPowerCompany


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value3332192624241134251611302118102313191120131710211221102528401410
Percentage of TaxesPayableCurrent78.593.8100.249.885.3115.699.864.481.968.597.864.076.087.098.541.466.9110.5100.0100.0106.299.999.8100.680.7121.699.695.3101.5106.7105.591.4
Percentage of Assets0.50.50.30.40.30.40.20.50.40.30.20.50.40.30.20.40.20.30.20.30.20.30.20.40.20.40.20.50.50.80.30.2
Percentage of Assets ida:IdahoPowerCompany0.50.50.30.40.40.40.20.50.40.30.20.50.40.30.20.40.20.30.20.30.20.30.20.40.20.40.20.50.50.80.30.2

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value22402051205919041920189319131830183518341842214321542141213720252017201219931936191819241903169016531638164417761752174517381628157315451543142412481202
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.631.031.029.329.729.630.029.129.629.330.533.734.334.434.033.033.232.833.132.632.532.233.330.830.730.630.631.831.932.832.731.330.831.031.129.526.925.7

us-gaap:LiabilitiesNoncurrent dei:LegalEntity

ida:IdahoPowerCompany


Liabilities
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value22662092210619591974194619661914190118991906225322612247224321232132212721071984199319971978177117321727173118891860185218431732166416351631151813431295
Percentage of LiabilitiesNoncurrent101.2102.0102.3102.9102.8102.8102.7104.6103.6103.5103.5105.1104.9105.0105.0104.9105.7105.7105.7102.5103.9103.8103.9104.8104.8105.4105.3106.3106.2106.1106.0106.4105.8105.8105.7106.6107.6107.7
Percentage of Assets31.931.731.730.130.630.530.830.530.630.331.535.436.036.135.734.735.134.735.033.433.833.534.632.232.132.232.333.833.934.834.733.332.632.832.931.528.927.7
Percentage of Assets ida:IdahoPowerCompany32.832.432.430.931.231.131.431.031.030.631.835.636.236.436.035.035.435.035.334.034.334.035.232.832.732.732.934.334.535.535.433.833.333.533.632.229.728.3

us-gaap:LiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value62723336
Percentage of LiabilitiesNoncurrent2.83.51.82.0
Percentage of Assets0.91.10.50.6
Percentage of Assets srt:ParentCompany2.42.81.41.6

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2000183618341746174517261615161615371488
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.227.728.728.927.828.728.330.128.930.0

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
Value20002000200020002000183717361836183518351834183418341833174617451745174417441745174517441725174117411741161416141614161416151615161515351466153615361486138714871487148714881409
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 Assets27.828.328.228.928.527.826.128.228.428.728.729.229.629.328.927.427.828.027.728.528.728.528.629.329.529.228.229.430.030.130.128.929.428.927.629.530.129.828.030.832.032.431.833.3

us-gaap:LongTermDebtNoncurrent dei:LegalEntity

ida:IdahoPowerCompany


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value200020002000200020001837173618361835183518341834183418331746174517451744174417451745174417251741174117411614161416141614161516151615153514661536153614861387148714871488
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.828.328.228.928.527.826.128.228.428.728.729.229.629.328.927.427.828.027.728.528.728.528.629.329.529.228.229.430.030.130.128.929.428.927.629.530.129.828.030.832.031.8
Percentage of Assets ida:IdahoPowerCompany28.629.029.029.529.228.526.728.929.029.329.329.729.929.529.127.627.928.228.028.829.028.728.929.830.029.728.729.830.430.630.729.329.929.428.130.030.730.428.631.532.832.6

Secured Long Term Debt

us-gaap:SecuredLongTermDebt us-gaap:DebtInstrument

us-gaap:SecuredLongTermDebt

ida:FirstMortgageBonds190SeriesLDueJuly152030


Secured
Period End2020-12-31
Value80
Percentage of SecuredLongTermDebt100.0
Percentage of Assets1.1
Percentage of Assets ida:FirstMortgageBonds190SeriesLDueJuly1520300.0

ida:FirstMortgageBonds4.20KSeriesdue2048Domain


Secured
Period End2020-12-312019-12-312018-12-312018-03-31
Value450220220220
Percentage of SecuredLongTermDebt562.50.00.00.0
Percentage of Assets6.33.33.43.5
Percentage of Assets ida:FirstMortgageBonds4.20KSeriesdue2048Domain0.00.00.00.0

ida:FirstMortgageBonds430SeriesDue2042


Secured
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7575757575757575750.0
Percentage of SecuredLongTermDebt93.80.00.00.00.00.00.00.00.00.0
Percentage of Assets1.11.11.21.21.21.21.31.41.40.0
Percentage of Assets ida:FirstMortgageBonds430SeriesDue20420.00.00.00.00.00.00.00.00.00.0

ida:Firstmortgagebonds4.05Seriesdue2046


Secured
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-31
Value1201201201201201200.0
Percentage of SecuredLongTermDebt150.00.00.00.00.00.00.0
Percentage of Assets1.71.81.92.01.92.00.0
Percentage of Assets ida:Firstmortgagebonds4.05Seriesdue20460.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value789794800736739742746
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.011.211.310.610.511.211.2

us-gaap:DeferredIncomeTaxLiabilitiesNet dei:LegalEntity

ida:IdahoPowerCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value821825829798789792794
Percentage of DeferredIncomeTaxLiabilitiesNet104.1103.9103.6108.4106.9106.7106.5
Percentage of Assets11.411.711.711.511.312.012.0
Percentage of Assets ida:IdahoPowerCompany11.712.012.011.811.512.312.2

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value638641634499522515519410433427431415429434438391424417411375397401394385407410403230247249244416427430423339341335363263
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.99.18.97.27.47.87.86.36.76.76.86.66.96.97.36.16.86.76.56.16.56.56.56.56.96.97.14.24.64.74.67.47.88.18.06.56.76.77.35.6

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent dei:LegalEntity

ida:IdahoPowerCompany


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value638641634499522515519410433427431415429434438391424417411375397401394385407410403230247249244416427430423339341335363263
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.99.18.97.27.47.87.86.36.76.76.86.66.96.97.36.16.86.76.56.16.56.56.56.56.96.97.14.24.64.74.67.47.88.18.06.56.76.77.35.6
Percentage of Assets ida:IdahoPowerCompany9.19.39.27.47.68.08.06.56.96.86.96.77.07.07.36.26.86.86.66.26.66.66.66.67.07.07.24.34.74.74.67.67.98.38.16.66.86.97.55.8

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value465371301301287
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent73.571.569.868.769.9
Percentage of Assets6.65.64.75.04.6
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1281169710594
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent20.322.422.524.023.0
Percentage of Assets1.81.81.51.71.5
Percentage of Assets us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit0.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value6696000.06445000.06476000.06434000.06163000.05893000.05925000.05988000.05646000.05402000.05451000.05362000.05003000.04698000.04729000.04570000.04128000.03864000.03960000.04019000.04101000.03961000.04160000.04319000.04388000.04278000.04364000.04373000.04028000.03871000.04090000.04182000.04197000.04060000.04213000.04260000.04065000.03928000.04040000.04041000.03695000.03619000.03871000.04209000.04434000.04478000.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0

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
Value604848475052454545434343434444444443454545444549475044454849545259596563657175341353343338346
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 Assets0.80.70.70.70.70.80.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.80.80.80.90.80.80.90.91.00.91.11.11.21.21.31.41.57.17.67.57.28.2

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

ida:IdahoPowerCompany


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
Value594845424343444445434242424343434342444444434447464942434748525057576361626973339351335
Percentage of OtherLiabilitiesNoncurrent98.498.594.290.086.783.598.298.298.398.298.198.198.298.297.998.098.098.097.797.897.897.897.497.697.597.796.997.097.397.496.696.697.097.196.896.196.296.696.599.499.499.3
Percentage of Assets0.80.70.60.60.60.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.80.80.80.80.80.90.91.00.91.11.11.21.21.21.41.57.07.67.2
Percentage of Assets ida:IdahoPowerCompany0.90.70.70.60.60.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.70.80.80.80.80.80.90.91.00.91.11.11.21.21.31.41.57.27.87.4

us-gaap:OtherLiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.7240.8060.8360.914
Percentage of OtherLiabilitiesNoncurrent1.51.81.92.1
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value260625692559256524952467246424642403238023702368229322572251224721822159215321482089205720572049199819541953194918811857185018591803177517581769169216701657165615631549153213971302
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.236.336.137.035.637.337.137.937.237.337.137.737.036.037.235.334.834.734.235.134.433.634.234.533.932.734.235.434.934.634.533.332.933.433.134.033.233.533.434.333.733.832.833.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value2559246423702251
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets36.137.137.137.2
Percentage of Assets srt:ParentCompany97.596.998.297.7

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value261325752566257225012473247024702409238523752373229822612256225221862163215721522093206120622054200219581957195318851861185418631807177917621774169616741661166015661553153515211433140614011306
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.336.436.237.135.637.437.238.037.337.337.237.737.036.137.335.434.834.734.335.134.433.634.234.634.032.834.235.535.034.734.633.332.933.533.134.133.233.633.534.433.833.832.80.00.00.033.10.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

ida:IdahoPowerCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value240623732363237123042279227522802224220421942194212320922085208520242003199819981944191419141907185818171817181517521730172417211668164216251634156015421524151514261405
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest92.192.192.192.292.192.292.192.392.392.492.492.592.492.592.492.692.692.692.692.992.892.992.892.992.892.892.892.992.993.093.092.492.392.392.292.192.092.191.791.291.191.5
Percentage of Assets33.433.533.334.232.834.534.335.134.434.534.434.934.233.434.532.832.332.231.832.632.031.231.832.131.530.431.833.032.532.332.130.830.430.930.631.430.630.930.731.430.730.1
Percentage of Assets ida:IdahoPowerCompany34.334.434.235.033.635.335.035.935.235.235.135.534.633.734.833.032.432.432.032.932.331.532.132.732.031.032.333.633.032.832.731.330.931.531.231.931.231.631.432.131.530.8

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value871868869867866864868866864863863861859857857855853852851850849848849848846845845843841840839838836835834835834831828820816809807756729675
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.112.312.312.512.313.113.113.313.413.513.513.713.913.714.213.413.613.713.513.914.013.814.114.314.414.214.815.315.615.715.715.015.215.715.716.016.416.716.717.017.617.617.317.80.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity

us-gaap:AdditionalPaidInCapitalCommonStock

ida:IdahoPowerCompany


Additional
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
Value712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712712704688688688
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.910.110.010.310.110.810.711.011.011.211.211.311.511.411.811.211.311.411.311.611.711.611.812.012.111.912.513.013.213.313.312.713.013.413.413.714.014.314.214.314.814.7
Percentage of Assets ida:IdahoPowerCompany10.210.310.310.510.411.011.011.211.311.411.411.511.611.511.911.311.411.511.411.711.811.711.912.212.312.112.713.213.413.513.512.913.213.713.713.914.214.614.514.615.215.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value17761742173417321664163816341621156315421531153714651432142614131350132813231317126012291230122411741131113211211056103310271034981955940943868849840846754748733649581537
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.724.624.425.023.724.824.624.924.224.124.024.423.622.923.622.221.521.321.021.520.720.120.420.619.919.019.820.419.619.319.218.517.918.017.718.117.017.017.017.516.316.315.715.30.00.0

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

ida:IdahoPowerCompany


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value1640160715991597153115061503149414381418140914151345131413081297123612161211121011561127112711211073103210331022960938932926875849834835762744735740650630547482
Percentage of RetainedEarningsAccumulatedDeficit92.392.292.292.292.092.092.092.192.092.092.092.191.891.891.791.891.691.591.691.991.791.691.791.691.491.391.391.290.990.990.889.689.288.988.788.687.987.787.487.586.285.984.482.9
Percentage of Assets22.822.722.523.121.822.822.623.022.322.222.122.521.721.021.620.419.719.519.319.719.018.418.718.918.217.318.118.617.817.517.416.616.016.015.716.014.914.914.815.314.013.512.90.0
Percentage of Assets ida:IdahoPowerCompany23.423.323.223.622.323.323.223.522.722.722.522.921.921.221.820.519.819.719.419.919.218.618.919.218.517.618.418.918.117.817.716.816.216.316.016.315.315.215.115.714.413.80.00.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-41.686-42.522-43.358-34.043-34.79-35.537-36.284-21.38-21.868-22.356-22.844-28.8-29.521-30.243-30.964-19.47-19.941-20.411-20.882-19.586-20.149-20.712-21.276-22.157-22.824-23.491-24.158-15.257-15.689-16.121-16.553-13.439-14.746-15.47-17.116-9.319-10.266-9.995-11.622-10.268-8.541-8.781-9.568-8.267-8.707-6.156
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.6-0.6-0.6-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.4-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.3-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.20.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

ida:IdahoPowerCompany


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value-41.68642-43.358-34.043-34.79-35.537-36.284-21.38-21.868-22.356-22.844-28.8-29.521-30.243-30.964-19.47-19.941-20.411-20.882-19.586-20.149-20.712-21.276-22.157-22.824-23.491-24.158-15.257-15.689-16.121-16.553-13.439-14.746-17.116-9.319-10.266-9.995-11.622-10.268-8.541-9.568
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0-100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.60.6-0.6-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.4-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets ida:IdahoPowerCompany-0.60.6-0.6-0.5-0.5-0.6-0.6-0.3-0.3-0.4-0.4-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.2-0.2-0.2-0.2-0.2-0.2-0.2

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-31
Value-41.686-42.522-43.358-34.043-34.79-35.537-36.284-21.38-21.868-22.356-22.844-28.8-29.521-30.243-30.964-19.47-19.941-20.411-20.882-19.586-20.149-20.712-21.276-22.157-22.824-23.491-24.158-15.257-15.689-16.121-16.553-19.858-20.322-20.787-21.252-13.396-13.661-14.191-12.537
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0147.8137.8134.4124.2143.7133.1122.1131.0
Percentage of Assets-0.6-0.6-0.6-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.4-0.5-0.5-0.5-0.5-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.4-0.3-0.3-0.3-0.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value6696000.06445000.06476000.06434000.06163000.05893000.05925000.05988000.05646000.05402000.05451000.05362000.05003000.04698000.04729000.04570000.04128000.03864000.03960000.04019000.04101000.03961000.04160000.04319000.04388000.04278000.04364000.04373000.04028000.03871000.04090000.04182000.04197000.04060000.04213000.04260000.04065000.03928000.04040000.04041000.03695000.03619000.03871000.04209000.04434000.04478000.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0

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
Value83831041559433791201095612516910491891577711372137716662119651054815266965713360536798453775786393823586100
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 RegulatedAndUnregulatedOperatingRevenue23.226.533.036.529.711.627.231.334.416.340.341.530.829.629.238.523.437.624.637.022.723.621.932.519.537.716.739.920.933.119.535.019.820.427.029.517.815.632.725.227.137.135.711.435.939.7

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value76786715491397810310754981281018957158781256111071678590481214714652965612158538196384065636010213429
Percentage of NetCashProvidedByUsedInOperatingActivities91.594.365.299.396.6115.998.385.698.495.578.775.996.997.564.4101.1101.1110.285.080.599.4102.5137.375.874.3115.097.596.478.499.997.191.097.898.8120.198.584.9108.787.581.894.7110.0162.482.4
Percentage of RegulatedAndUnregulatedOperatingRevenue21.225.021.536.328.713.526.726.833.915.531.731.529.928.818.838.923.741.420.929.822.624.130.024.614.543.416.338.516.433.119.031.919.420.132.529.015.117.028.620.625.740.858.09.4
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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-27.675-79.349-105.166-91.255-77.163-73.674-87.909-66.921-68.93-56.732-87.698-61.571-64.215-44.693-84.476-59.584-65.187-74.053-99.901-83.08-61.242-53.221-58.794-82.266-74.055-76.591-79.798-65.174-72.161-55.287-76.604-55.423-55.875-48.691-58.532-62.645-73.663-48.981-72.01-77.486-82.858-100.004-97.767-81.908-77.881-70.778
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-7.7-25.1-33.3-21.5-24.2-25.3-30.0-17.3-21.8-16.2-28.1-15.1-18.9-14.4-27.6-14.6-19.6-24.5-34.0-22.3-19.4-18.9-20.6-22.3-22.0-27.4-27.5-17.1-22.7-18.9-25.9-14.5-18.4-18.4-23.3-18.8-28.9-20.3-31.2-25.0-35.3-39.8-42.1-26.5-32.2-28.0

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-47.845-74.014-102.447-64.28-69.454-71.768-87.911-66.985-66.336-56.732-87.732-61.618-64.262-44.687-84.5-59.721-65.174-74.053-99.946-83.113-61.308-53.219-58.645-82.253-74.229-76.621-79.883-65.316-72.125-56.079-76.654-55.474-56.068-50.139-58.486-62.838-73.701-48.63-71.423-77.432-282.29699-93.714-78.692
Percentage of NetCashProvidedByUsedInInvestingActivities172.993.397.470.490.097.4100.0100.196.2100.0100.0100.1100.1100.0100.0100.2100.0100.0100.0100.0100.1100.099.7100.0100.2100.0100.1100.2100.0101.4100.1100.1100.3103.099.9100.3100.199.399.299.9340.7-99.795.996.1
Percentage of RegulatedAndUnregulatedOperatingRevenue-13.3-23.4-32.5-15.1-21.8-24.7-30.0-17.3-20.9-16.2-28.1-15.1-18.9-14.4-27.6-14.6-19.6-24.5-34.0-22.3-19.4-18.9-20.5-22.3-22.1-27.4-27.6-17.1-22.7-19.2-25.9-14.6-18.4-18.9-23.3-18.8-28.9-20.2-31.0-25.0-120.139.7-40.4-25.4
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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-35.9-39.422-35.837-212.509303-38.505-35.018-33.114-31.822-36.417-31.743-29.839-164.607183-32.482-25.814-27.142-54.113-11.704-44.21-139.59691-10.038-47.298-177.736231-22.948-26.929-31.852-31.548-90.007-27.299107-7.355-2.962-29.9433-7.625-6.824-27.532-16.442-127.95158202-20.832-41.223
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-10.0-12.5-11.4-50.095.3-13.2-12.0-8.6-10.0-10.4-10.2-7.3-48.459.2-10.6-6.3-8.2-17.9-4.0-11.9-44.332.7-3.5-12.8-52.882.9-7.9-7.0-10.0-10.8-30.4-7.235.3-2.8-1.2-9.013.3-3.2-3.0-8.9-7.0-50.925.165.4-8.6-16.3

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-36.025-35.956-35.987-212.611304-33.948-34.855-33.203-31.946-32.054-31.935-29.951-164.745187-30.047-27.783-27.784-50.775-6.302-25.792-140.16491-26.342-23.691-161.751221-23.627-21.631-21.632-22.758-91.8-19.391112-3.591-19.295-26.71838-8.634-0.144-14.922-14.916-135.9944.817203
Percentage of NetCashProvidedByUsedInFinancingActivities100.391.2100.4100.0100.188.299.5100.3100.488.0100.6100.4100.1102.092.5107.6102.493.853.858.3100.4100.0262.450.191.095.5103.080.367.972.1102.071.0104.848.8651.489.2113.6113.22.154.290.7106.38.3100.3
Percentage of RegulatedAndUnregulatedOperatingRevenue-10.0-11.4-11.4-50.095.4-11.7-11.9-8.6-10.1-9.1-10.2-7.3-48.560.4-9.8-6.8-8.3-16.8-2.1-6.9-44.432.7-9.2-6.4-48.179.2-8.2-5.7-6.8-7.8-31.0-5.137.0-1.4-7.7-8.015.1-3.6-0.1-4.8-6.3-54.12.165.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value19-35.109-148.347321-78.383
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue5.5-11.1-34.9100.9-26.9

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity

ida:IdahoPowerCompany


Cash
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value-7.466-31.068-122.585326-66.53
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-37.488.582.6101.584.9
Percentage of RegulatedAndUnregulatedOperatingRevenue-2.1-9.8-28.8102.4-22.9
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.0

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
Value44444344444344434243434242414041463737363736363535353434333334333233323231313231293130303030
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

us-gaap:DepreciationDepletionAndAmortization dei:LegalEntity

ida:IdahoPowerCompany


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4444434443434443424343424240404046373636363536353534343433333433323332323031313129313030
Percentage of DepreciationDepletionAndAmortization99.799.799.799.799.799.699.799.799.699.799.799.699.699.699.699.699.799.699.699.699.699.699.699.699.699.699.699.699.699.699.699.699.499.699.599.599.599.599.399.699.699.599.599.5

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value113.451-30.8412214-5.102-18.80215-15.90225-13.7057.0391.0154.922-24.525173.252-0.494-9.764124.324-4.728-19.444137.576-6.794-16.0611.886-9.12.842-8.9964013-15.158-12.03517-1.956-0.717
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value8.9355.6-31.1452214-4.161-20.03615-15.24124-13.7228.2050.2714.613-25.048171.5278.271-15.909132.176-3.012-19.361146.878-4.029-16.2541.712-10.04.47-8.9934017-17.671-12.67417-0.987-0.863
Percentage of IncreaseDecreaseInAccountsReceivable75.8162.3101.0101.5106.281.6106.6101.095.896.6100.1116.626.793.7102.198.947.0-1674.3162.9102.550.363.799.6104.390.859.3101.290.8109.9157.3100.0100.5130.8116.6105.3102.450.5120.4

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
Value83831041559433791201095612516910491891577711372137716662119651054815266965713360536798453775786393823586100
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 RegulatedAndUnregulatedOperatingRevenue23.226.533.036.529.711.627.231.334.416.340.341.530.829.629.238.523.437.624.637.022.723.621.932.519.537.716.739.920.933.119.535.019.820.427.029.517.815.632.725.227.137.135.711.435.939.7

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value76786715491397810310754981281018957158781256111071678590481214714652965612158538196384065636010213429
Percentage of NetCashProvidedByUsedInOperatingActivities91.594.365.299.396.6115.998.385.698.495.578.775.996.997.564.4101.1101.1110.285.080.599.4102.5137.375.874.3115.097.596.478.499.997.191.097.898.8120.198.584.9108.787.581.894.7110.0162.482.4
Percentage of RegulatedAndUnregulatedOperatingRevenue21.225.021.536.328.713.526.726.833.915.531.731.529.928.818.838.923.741.420.929.822.624.130.024.614.543.416.338.516.433.119.031.919.420.132.529.015.117.028.620.625.740.858.09.4
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


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
Value7044371026037478953422610262363890493333835625317366233486442731714533169235248.985107202920673916
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RegulatedAndUnregulatedOperatingRevenue19.414.211.924.018.912.916.123.316.812.28.425.018.311.712.722.215.010.911.322.317.89.211.219.919.68.412.022.714.09.410.718.815.012.76.627.613.910.33.934.68.911.88.821.716.26.3

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value68445836
Percentage of NetIncomeLoss98.399.097.698.1
Percentage of RegulatedAndUnregulatedOperatingRevenue19.114.018.512.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany19.214.118.512.7

us-gaap:AllOtherSegments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.2010.4621.4660.714
Percentage of NetIncomeLoss1.71.02.41.9
Percentage of RegulatedAndUnregulatedOperatingRevenue0.30.10.50.2
Percentage of RegulatedAndUnregulatedOperatingRevenue us-gaap:AllOtherSegments118.295.1133.3137.3

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
Value7044371026037479053422610262363991503333835625317366233487442731714533169235248.984107202920673915
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 RegulatedAndUnregulatedOperatingRevenue19.514.211.924.119.012.916.123.416.912.28.425.118.411.612.822.315.010.911.322.317.99.111.119.819.78.412.022.814.19.310.618.815.012.66.527.613.910.33.934.78.911.78.721.716.26.3

us-gaap:ProfitLoss dei:LegalEntity

ida:IdahoPowerCompany


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6844371005836438751412510060353788483228805425317164233484422727704434188934259.331042029186438
Percentage of ProfitLoss97.999.098.998.197.198.292.897.595.897.597.897.796.999.395.297.096.698.487.196.497.2100.099.397.997.2100.598.897.095.4102.686.998.098.5102.0109.997.197.9104.0103.997.698.7101.293.596.399.0
Percentage of RegulatedAndUnregulatedOperatingRevenue19.114.011.823.618.512.614.922.816.111.98.224.517.811.612.221.614.510.79.821.517.49.111.019.419.18.411.822.113.49.59.318.414.812.97.226.813.610.74.033.98.811.98.220.916.1
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

us-gaap:AllOtherSegments


Profit
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.6421.4660.7141.8971.981.1022.0371.6510.2852.3051.450.623.0711.4390.1951.6091.74-0.0322.2891.887-0.4961.4480.53-0.5132.4730.592-0.889-0.3452.1950.2-0.1081.4572.4850.381
Percentage of ProfitLoss1.62.41.92.13.72.62.02.60.82.52.91.93.72.60.82.22.6-0.12.64.2-1.82.01.2-1.52.71.7-3.6-3.82.01.0-0.47.23.71.0
Percentage of RegulatedAndUnregulatedOperatingRevenue0.40.50.20.50.60.30.50.50.10.60.40.20.80.50.10.40.5-0.00.60.6-0.20.40.2-0.20.70.2-0.4-0.10.70.1-0.00.60.80.2
Percentage of RegulatedAndUnregulatedOperatingRevenue us-gaap:AllOtherSegments150.5133.3137.3146.8176.6201.1140.9131.844.1138.1117.1106.9537.8140.450.0248.3172.8-5.2153.6167.3-124.3180.348.5-91.6196.051.3-135.3-36.2138.518.9-25.0233.9279.539.6

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-27.675-79.349-105.166-91.255-77.163-73.674-87.909-66.921-68.93-56.732-87.698-61.571-64.215-44.693-84.476-59.584-65.187-74.053-99.901-83.08-61.242-53.221-58.794-82.266-74.055-76.591-79.798-65.174-72.161-55.287-76.604-55.423-55.875-48.691-58.532-62.645-73.663-48.981-72.01-77.486-82.858-100.004-97.767-81.908-77.881-70.778
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-7.7-25.1-33.3-21.5-24.2-25.3-30.0-17.3-21.8-16.2-28.1-15.1-18.9-14.4-27.6-14.6-19.6-24.5-34.0-22.3-19.4-18.9-20.6-22.3-22.0-27.4-27.5-17.1-22.7-18.9-25.9-14.5-18.4-18.4-23.3-18.8-28.9-20.3-31.2-25.0-35.3-39.8-42.1-26.5-32.2-28.0

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-47.845-74.014-102.447-64.28-69.454-71.768-87.911-66.985-66.336-56.732-87.732-61.618-64.262-44.687-84.5-59.721-65.174-74.053-99.946-83.113-61.308-53.219-58.645-82.253-74.229-76.621-79.883-65.316-72.125-56.079-76.654-55.474-56.068-50.139-58.486-62.838-73.701-48.63-71.423-77.432-282.29699-93.714-78.692
Percentage of NetCashProvidedByUsedInInvestingActivities172.993.397.470.490.097.4100.0100.196.2100.0100.0100.1100.1100.0100.0100.2100.0100.0100.0100.0100.1100.099.7100.0100.2100.0100.1100.2100.0101.4100.1100.1100.3103.099.9100.3100.199.399.299.9340.7-99.795.996.1
Percentage of RegulatedAndUnregulatedOperatingRevenue-13.3-23.4-32.5-15.1-21.8-24.7-30.0-17.3-20.9-16.2-28.1-15.1-18.9-14.4-27.6-14.6-19.6-24.5-34.0-22.3-19.4-18.9-20.5-22.3-22.1-27.4-27.6-17.1-22.7-19.2-25.9-14.6-18.4-18.9-23.3-18.8-28.9-20.2-31.0-25.0-120.139.7-40.4-25.4
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value507797687173796968617964666778607273968262545882747873726959695657515264744870808410188829769
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

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment dei:LegalEntity

ida:IdahoPowerCompany


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value50779768717379696861796466677860727396826254588274787372695969565751526474487080841018882
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.499.6100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.999.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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-35.9-39.422-35.837-212.509303-38.505-35.018-33.114-31.822-36.417-31.743-29.839-164.607183-32.482-25.814-27.142-54.113-11.704-44.21-139.59691-10.038-47.298-177.736231-22.948-26.929-31.852-31.548-90.007-27.299107-7.355-2.962-29.9433-7.625-6.824-27.532-16.442-127.95158202-20.832-41.223
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-10.0-12.5-11.4-50.095.3-13.2-12.0-8.6-10.0-10.4-10.2-7.3-48.459.2-10.6-6.3-8.2-17.9-4.0-11.9-44.332.7-3.5-12.8-52.882.9-7.9-7.0-10.0-10.8-30.4-7.235.3-2.8-1.2-9.013.3-3.2-3.0-8.9-7.0-50.925.165.4-8.6-16.3

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

ida:IdahoPowerCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-36.025-35.956-35.987-212.611304-33.948-34.855-33.203-31.946-32.054-31.935-29.951-164.745187-30.047-27.783-27.784-50.775-6.302-25.792-140.16491-26.342-23.691-161.751221-23.627-21.631-21.632-22.758-91.8-19.391112-3.591-19.295-26.71838-8.634-0.144-14.922-14.916-135.9944.817203
Percentage of NetCashProvidedByUsedInFinancingActivities100.391.2100.4100.0100.188.299.5100.3100.488.0100.6100.4100.1102.092.5107.6102.493.853.858.3100.4100.0262.450.191.095.5103.080.367.972.1102.071.0104.848.8651.489.2113.6113.22.154.290.7106.38.3100.3
Percentage of RegulatedAndUnregulatedOperatingRevenue-10.0-11.4-11.4-50.095.4-11.7-11.9-8.6-10.1-9.1-10.2-7.3-48.560.4-9.8-6.8-8.3-16.8-2.1-6.9-44.432.7-9.2-6.4-48.179.2-8.2-5.7-6.8-7.8-31.0-5.137.0-1.4-7.7-8.015.1-3.6-0.1-4.8-6.3-54.12.165.6
Percentage of RegulatedAndUnregulatedOperatingRevenue ida:IdahoPowerCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302010-12-31
Value0.00.00.01660.00.00.00.00.02200.00.00.00.00.00.00.01200.00.00.02500.00.00.00.00.00.00.00.00.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.00.0100.00.00.00.00.00.0100.00.00.00.00.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity

ida:IdahoPowerCompany


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302011-12-312011-09-302010-12-31
Value0.00.00.01660.00.00.00.00.02200.00.00.00.00.00.00.01200.00.00.02500.00.00.00.00.00.00.00.00.00.00.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.00.0100.00.00.00.00.00.0100.00.00.00.00.00.00.00.0100.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2020-12-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.00.01660.00.01300.00.00.00.01.0640.00.01001.0640.00.01201.0640.00.00.01.064700.00.01.0640.00.01001.0640.00.00.01210.00.00.01.064
Percentage of RepaymentsOfLongTermDebt0.00.0100.00.00.0100.00.00.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.0100.0100.00.00.0100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity

ida:IdahoPowerCompany


Repayments
Period End2020-12-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.00.01660.00.01300.00.00.00.01.0640.00.01001.0640.00.01201.0640.00.00.01.064700.00.01.0640.00.01001.0640.00.00.01210.00.0
Percentage of RepaymentsOfLongTermDebt0.00.0100.00.00.0100.00.00.00.00.0100.00.00.0100.0100.00.00.0100.0100.00.00.00.0100.0100.00.00.0100.00.00.0100.0100.00.00.00.0100.00.00.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


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
Value35363533333433313132312929302927272827252526252323242321212121191919181616161414141514141414
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock dei:LegalEntity

ida:IdahoPowerCompany


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value36353333333331313231292930292727272725252525232323232121212119191919161616141414141414
Percentage of PaymentsOfDividendsCommonStock100.398.8100.4100.499.0100.4100.4100.599.3100.6100.6100.499.6100.4100.4100.499.4100.4100.4100.699.0100.499.1101.899.2100.4100.4100.499.2100.5100.5100.599.0100.5100.599.298.6100.5100.5100.798.5100.6100.5

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity, us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

ida:IdahoPower, ida:FirstMortgageBonds2.95Seriesdue2022Domain


Debt
Period End2020-07-29
Value2.95
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPower ida:FirstMortgageBonds2.95Seriesdue2022Domain0.0

ida:IdahoPower, ida:FirstMortgageBonds450SeriesDue2020


Debt
Period End2020-08-032020-06-302020-03-31
Value3.40.0340.034
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPower ida:FirstMortgageBonds450SeriesDue20200.00.00.0

ida:IdahoPowerCompany, ida:HumboldtCountyPollutionControlRevenueBondsDomain


Debt
Period End2020-12-312019-12-31
Value1.450.0145
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPowerCompany ida:HumboldtCountyPollutionControlRevenueBondsDomain0.00.0

ida:IdahoPowerCompany, ida:PollutionControlBond170Due2026


Debt
Period End2020-09-30
Value5.25
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPowerCompany ida:PollutionControlBond170Due20260.0

ida:IdahoPowerCompany, ida:PollutionControlBonds145Due2024


Debt
Period End2020-09-30
Value5.15
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPowerCompany ida:PollutionControlBonds145Due20240.0

ida:IdahoPowerCompany, ida:SweetwaterCountyPollutionControlRevenueBonddue20261.7


Debt
Period End2020-12-312019-12-31
Value1.70.017
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPowerCompany ida:SweetwaterCountyPollutionControlRevenueBonddue20261.70.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:SubsequentEventType

ida:IdahoPower, ida:FirstMortgageBonds2.95Seriesdue2022Domain, us-gaap:SubsequentEvent


Debt
Period End2020-07-29
Value0.0295
Percentage of DebtInstrumentInterestRateStatedPercentage1.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:IdahoPower ida:FirstMortgageBonds2.95Seriesdue2022Domain us-gaap:SubsequentEvent0.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument

ida:FirstMortgageBonds190SeriesLDueJuly152030


Debt
Period End2020-12-31
Value1.9
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds190SeriesLDueJuly1520300.0

ida:FirstMortgageBonds250SeriesDue2023Domain


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2.50.0250.0250.0250.0250.0250.0250.025
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds250SeriesDue2023Domain0.00.00.00.00.00.00.00.0

ida:FirstMortgageBonds295SeriesDue2022


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2.950.02950.02950.02950.02950.02950.02950.02950.0295
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds295SeriesDue20220.00.00.00.00.00.00.00.00.0

ida:FirstMortgageBonds340SeriesDue2020


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-03-312011-12-31
Value3.40.0340.0340.0340.0340.0340.0340.0340.0340.0340.034
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds340SeriesDue20200.00.00.00.00.00.00.00.00.00.00.0

ida:FirstMortgageBonds4.20KSeriesdue2048Domain


Debt
Period End2020-12-312019-12-312019-03-312018-12-312018-03-31
Value4.20.0424.20.0420.042
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds4.20KSeriesdue2048Domain0.00.00.00.00.0

ida:FirstMortgageBonds400SeriesDue2043Domain


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value4.00.040.040.040.040.040.040.04
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds400SeriesDue2043Domain0.00.00.00.00.00.00.00.0

ida:FirstMortgageBonds430SeriesDue2042


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value4.30.0430.0430.0430.0430.0430.0430.0430.043
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:FirstMortgageBonds430SeriesDue20420.00.00.00.00.00.00.00.00.0

ida:Firstmortgagebonds3.65Seriesdue2045


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-31
Value3.650.03650.03650.03650.03650.03650.03650.03650.0365
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds3.65Seriesdue20450.00.00.00.00.00.00.00.00.0

ida:Firstmortgagebonds4.05Seriesdue2046


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-31
Value4.050.04050.04050.04050.04050.04050.04050.0405
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds4.05Seriesdue20460.00.00.00.00.00.00.00.0

ida:Firstmortgagebonds4.85Seriesdue2040


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value4.850.04850.04850.04850.04850.0485
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds4.85Seriesdue20400.00.00.00.00.00.0

ida:Firstmortgagebonds5.30Seriesdue2035


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.30.0530.0530.0530.0530.053
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds5.30Seriesdue20350.00.00.00.00.00.0

ida:Firstmortgagebonds5.50Seriesdue2033


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.50.0550.0550.0550.0550.055
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds5.50Seriesdue20330.00.00.00.00.00.0

ida:Firstmortgagebonds5.50Seriesdue2034


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.50.0550.0550.0550.0550.055
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds5.50Seriesdue20340.00.00.00.00.00.0

ida:Firstmortgagebonds6.00Seriesdue2032


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value6.00.060.060.060.060.06
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds6.00Seriesdue20320.00.00.00.00.00.0

ida:Firstmortgagebonds6.25Seriesdue2037


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value6.250.06250.06250.06250.06250.0625
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds6.25Seriesdue20370.00.00.00.00.00.0

ida:Firstmortgagebonds6.30Seriesdue2037


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value6.30.0630.0630.0630.0630.063
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations ida:Firstmortgagebonds6.30Seriesdue20370.00.00.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.110.20.410.3010.0050.094-0.030.0190.0140.0920.006-0.0270.0180.074-0.021-0.0110.0610.1570.0070.01-0.0080.146-0.0040.044-0.0570.207-0.096-0.0670.0020.2410.0060.0230.0060.2490.0040.0410.230.251-0.066-0.735-0.2120.1410.0390.131-0.736
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateContinuingOperations dei:LegalEntity

ida:IdahoPowerCompany


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.611.70.610.8920.0010.107-0.0180.0150.0140.1010.007-0.0290.0170.081-0.016-0.010.0610.1640.0020.016-0.0090.155-0.0020.042-0.0540.216-0.095-0.0690.0140.243-0.0080.0230.0040.2820.0060.0810.2670.285-0.024-0.662-0.1320.1940.0530.186-0.617
Percentage of EffectiveIncomeTaxRateContinuingOperations76.2114.7150.0105.720.0113.860.078.9100.0109.8116.7107.494.4109.576.290.9100.0104.528.6160.0112.5106.250.095.594.7104.399.0103.0700.0100.8-133.3100.066.7113.3150.0197.6116.1113.536.490.162.3137.6135.9142.083.8

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
Value800746699660124411371442129212911101856
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilities dei:LegalEntity

ida:IdahoPowerCompany


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
Value829794753725135112521431128012741081836
Percentage of DeferredTaxLiabilities103.6106.5107.6109.8108.6110.199.299.198.798.297.6

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
Value391367360367414405419370453345300
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNet dei:LegalEntity

ida:IdahoPowerCompany


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
Value357312301297298280283234321232182
Percentage of DeferredTaxAssetsNet91.185.183.781.172.069.267.563.370.967.460.7

ida:DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments us-gaap:RetirementPlanType

ida:DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.0960.2920.2910.2880.2950.4170.4130.4220.3180.3050.3330.3740.3320.4160.3590.341
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value4.8534.8584.8024.84.7844.8184.7744.7734.7594.7884.7334.7084.7454.7464.7764.7754.84.8834.7474.7474.718
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments5055.21663.70.01649.51661.11633.20.01144.61152.31134.60.01480.51555.71425.20.01276.71445.81173.80.01322.31383.6

us-gaap:RetirementPlanNameDomain


Defined
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
Value7.1677.3677.2387.2187.266.9456.9296.9656.987.0047.0347.1917.1737.34
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments7465.62522.92487.32506.22461.01665.51677.71650.52195.02296.42112.31922.72160.51764.4

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2.2182.2172.1472.1472.1462.1471.7551.7551.7571.7551.9551.9541.9541.9552.0412.0412.0412.0412.3012.3012.3
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostAfterRegulatoryAdjustments2310.4759.20.0737.8745.1727.80.0420.9425.4415.90.0614.5640.7587.10.0545.7614.8490.60.0640.9674.5

ida:DefinedBenefitPlanRegulatedIPUCAuthorizedrecoveredpensioncost us-gaap:RetirementPlanType

ida:DefinedBenefitPlanRegulatedIPUCAuthorizedrecoveredpensioncost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value4.2894.2884.2894.2884.2894.2884.2894.2884.2894.2884.2894.2884.2894.288-30.0194.2884.2894.288-30.0194.2884.289
Percentage of DefinedBenefitPlanRegulatedIPUCAuthorizedrecoveredpensioncost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanNameDomain


Defined
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
Value4.2894.2884.2884.2894.2884.2884.2894.2884.2884.2894.2884.2884.2894.288
Percentage of DefinedBenefitPlanRegulatedIPUCAuthorizedrecoveredpensioncost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:DefinedBenefitPlanRegulatoryAdjustmentsDeferred us-gaap:RetirementPlanType

ida:DefinedBenefitPlanRegulatoryAdjustmentsDeferred

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1211101010109.8459.8459.523109.0398.4989.3099.3079.7089.7089.4889.7969.8279.8269.375
Percentage of DefinedBenefitPlanRegulatoryAdjustmentsDeferred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanNameDomain


Defined
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
Value12111010109.8459.523108.4989.3099.3079.7089.4889.796
Percentage of DefinedBenefitPlanRegulatoryAdjustmentsDeferred100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:DistributionFromReclamationTrustFund dei:LegalEntity

ida:DistributionFromReclamationTrustFund

ida:BridgerCoalCompany


Distribution
Period End2020-12-312012-09-30
Value1.58.0
Percentage of DistributionFromReclamationTrustFund100.0100.0

ida:EnergyEfficiencyPrograms

ida:EnergyEfficiencyPrograms


Energy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.6589.0271010119.475108.43811109.9959.3098.8027.597129.883106.3279.4989.1028.9036.251107.6457.8674.3419.2735.5377.624.7245.3576.077194.476.3298.418.0844.4776.652185.7966.71110198.7655.034
Percentage of EnergyEfficiencyPrograms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:EnergyEfficiencyPrograms dei:LegalEntity

ida:IdahoPowerCompany


Energy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.6589.0271010119.475108.43811109.9959.3098.8027.597129.883106.3279.4989.1028.9036.251107.6457.8674.3419.2735.5377.624.7245.3576.077194.476.3298.418.0844.4776.652185.7966.71110198.765
Percentage of EnergyEfficiencyPrograms100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:NetServiceCostDefinedBenefitPlan us-gaap:RetirementPlanType

ida:NetServiceCostDefinedBenefitPlan

us-gaap:RetirementPlanNameDomain


Net
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
Value4.54.84.34.34.34.24.24.24.14.14.14.44.44.5
Percentage of NetServiceCostDefinedBenefitPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:Otherexpensedefinedbenefitplanbenefitcost us-gaap:RetirementPlanType

ida:Otherexpensedefinedbenefitplanbenefitcost

us-gaap:RetirementPlanNameDomain


Otherexpensedefinedbenefitplanbenefitcostus-gaap:
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
Value2.62.63.03.03.02.72.72.82.92.92.92.82.82.8
Percentage of Otherexpensedefinedbenefitplanbenefitcost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:Powercostadjustmentexpensedeferral

ida:Powercostadjustmentexpensedeferral


Powercostadjustmentexpensedeferral
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-30
Value-7.9345.671-19.248-9.533-1.536-3.391-23.888-16.41216261.679-5.07519250.816101623-17.244-18.3421613-11.9141027-0.6689.14115-6.96
Percentage of Powercostadjustmentexpensedeferral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:Powercostadjustmentexpensedeferral dei:LegalEntity

ida:IdahoPowerCompany


Powercostadjustmentexpensedeferraldei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-30
Value-7.9345.671-19.248-9.533-1.536-3.391-23.888-16.41216261.679-5.07519250.816101623-17.244-18.3421613-11.9141027-0.6689.14115-6.96
Percentage of Powercostadjustmentexpensedeferral100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:PremiumonRepaymentonDebt dei:LegalEntity, us-gaap:DebtInstrument

ida:PremiumonRepaymentonDebt

ida:IdahoPower, ida:FirstMortgageBonds2.95Seriesdue2022Domain


Premiumon
Period End2020-07-29
Value3300000.0
Percentage of PremiumonRepaymentonDebt100.0

ida:Premiumonissuanceoflonggermdebt

ida:Premiumonissuanceoflonggermdebt


Premiumonissuanceoflonggermdebt
Period End2020-09-30
Value0.0
Percentage of Premiumonissuanceoflonggermdebt0.0

ida:Premiumonissuanceoflonggermdebt dei:LegalEntity

ida:IdahoPowerCompany


Premiumonissuanceoflonggermdebtdei:
Period End2020-09-30
Value0.0
Percentage of Premiumonissuanceoflonggermdebt0.0

ida:TreasuryStockIssued

ida:TreasuryStockIssued


Treasury
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value000-1920000.0-92000.0-33000.0-1016000.0-3031000.00-61000.0-770000.0-2237000.0
Percentage of TreasuryStockIssued0.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value03026000.0011000.0447000.04183000.000
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.00.0100.0100.0100.00.00.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value717000.0166000.0837000.0334000.0470000.0216000.0599000.0695000.0634000.0646000.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
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
Value3.074271012-0.7712215-3.4863.01236.8132.0650.52209.7182.0920.99420131.8831.7071711-9.2836.395159.063-2.021.549191.76610-5.298174.287-2.3623.716213.616-9.9668.0424120.1163.55317
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid dei:LegalEntity

ida:IdahoPowerCompany


Capital
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
Value3.074271012-0.7712215-3.4863.01236.8132.0650.52209.7182.0920.99420131.8831.7071711-9.2836.395159.063-2.021.549191.76610-5.298174.287-2.3623.716213.616-9.9668.0424120.116
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.710.710.710.67-0.551.890.670.630.630.630.630.590.590.590.430.550.550.550.550.510.510.510.510.470.470.470.470.430.430.430.430.380.380.380.380.330.330.330.30.30.30.30.30.30.30.3
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DeferredIncomeTaxesAndTaxCredits


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
Value-2.779-3.3928-0.842-0.742-1.37929-1.222-1.886-4.29130-9.789-4.801-4.90733-7.0232.4344.3945.655175.9486.4251325-1.5721.26-6.1922014-9.92823274.591106.4697.966.8565.0081.427-32.346-23.261.2664.647563.392-23.118
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits dei:LegalEntity

ida:IdahoPowerCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-2.435-2.958-6.4059.288-0.527-1.20721-0.992-1.782-4.137-1.7058.938-4.652-4.853-12.847-4.1722.1234.021130.9555.5076.21731-3.055-1.174-1.0781.367203.933-10.48914266.064113.8452.4051625-1.851-36.574-21.7632.2591185
Percentage of DeferredIncomeTaxesAndTaxCredits87.687.3-22.8-1103.171.087.573.281.294.596.4-5.5-91.396.998.9-38.459.487.291.5231.75.492.696.8231.8-11.974.7-85.6-22.1101.126.5105.762.199.8132.1112.259.430.2246.4501.5-129.7113.193.6178.4239.2149.7

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-6.225-5.673-4.331-4.331-4.296-4.367-3.391-3.391-3.302-3.48-3.389-3.381-3.394-3.394-3.297-3.298-3.212-3.383-3.333-3.332-3.282
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetirementPlanNameDomain


Defined
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
Value-7.277-6.724-5.264-5.229-5.301-4.025-3.935-4.113-4.328-4.341-4.341-4.04-3.952-4.124
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses116.9118.5121.5121.7121.4118.7119.2118.2128.0127.9127.9122.5123.0121.9

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1.052-1.051-0.934-0.933-0.933-0.934-0.633-0.634-0.633-0.633-0.947-0.947-0.947-0.947-0.74-0.742-0.74-0.741-0.883-0.883-0.883
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses16.918.521.621.521.721.418.718.719.218.227.928.027.927.922.422.523.021.926.526.526.9

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value12000.012000.011000.012000.012000.011000.012000.012000.011000.012000.012000.011000.017000.07000.07000.06000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1000.02000.02000.01000.01000.02000.02000.01000.02000.01000.02000.01000.02000.01000.07000.07000.07000.07000.015000.015000.016000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit8.316.70.09.18.316.70.09.116.78.30.09.116.78.30.063.641.2100.00.0214.3266.7

us-gaap:RetirementPlanNameDomain


Defined
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
Value87000.088000.085000.086000.086000.036000.038000.037000.036000.039000.037000.049000.056000.046000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit725.0733.3772.7716.7716.7327.3316.7308.3327.3325.0308.3445.5329.4657.1

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value74000.074000.072000.073000.073000.072000.024000.024000.024000.024000.025000.024000.025000.024000.032000.031000.032000.032000.042000.042000.042000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit616.7616.70.0663.6608.3600.00.0218.2200.0200.00.0218.2208.3200.00.0281.8188.2457.10.0600.0700.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-09-30
Value0.030
Percentage of DefinedBenefitPlanContributionsByEmployer0.0100.0

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType, us-gaap:SubsequentEventType

us-gaap:PensionPlansDefinedBenefit, us-gaap:SubsequentEvent


Defined
Period End2020-07-31
Value10.0
Percentage of DefinedBenefitPlanContributionsByEmployer0.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.5970.6010.6010.5970.6050.5550.5570.5530.6160.6050.6290.5760.5840.570.6190.617
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value161614141414121212121313131311111111101010
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets2684.12665.70.02339.42360.02319.00.02190.32188.02192.40.02129.42158.02075.50.01959.21914.61997.90.01699.41761.9

us-gaap:RetirementPlanNameDomain


Defined
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
Value1616141414121212131313111111
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets2784.12765.72439.42460.02419.02290.32288.02292.42229.42258.02175.52059.22014.62097.9

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.5020.5280.6230.6330.6140.7480.7620.7320.660.6560.6660.6950.7020.690.6920.687
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value9.4569.20310109.98810101010109.7089.7619.6839.6829.749.7399.7169.7639.4539.4539.484
Percentage of DefinedBenefitPlanInterestCost1883.71743.00.01605.81577.91631.60.01414.21385.81447.50.01478.91476.11453.80.01401.31384.01414.90.01366.01380.5

us-gaap:RetirementPlanNameDomain


Defined
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
Value1010111111121212111111111111
Percentage of DefinedBenefitPlanInterestCost2160.82011.41880.31849.61908.81667.01636.11703.71739.81737.81713.41656.51637.71671.2

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.8890.8891.0881.0871.0871.0881.1431.1431.1451.1431.0621.0621.0611.0631.0791.0791.0791.0781.0691.0691.068
Percentage of DefinedBenefitPlanInterestCost177.1168.40.0174.5171.7177.20.0152.8150.3156.10.0160.9161.7159.60.0155.3153.7156.20.0154.5155.5

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.0960.2920.2910.2880.2950.4170.4130.4220.3180.3050.3330.3740.3320.4160.3590.341
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value13121111101110109.993109.4838.9189.7659.76510109.9991010109.804
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost13907.34200.30.03788.03741.03821.00.02477.22419.62527.70.02804.43201.62932.40.02725.93011.72497.80.02864.92875.1

us-gaap:RetirementPlanNameDomain


Defined
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
Value1514131313121212111212121212
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost16317.75059.64625.84586.14648.82998.12945.03043.63518.93942.33619.53371.93726.53088.5

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2.2182.2172.1472.1472.1462.1471.7551.7551.7571.7551.9551.9541.9541.9552.0412.0412.0412.0412.3012.3012.3
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost2310.4759.20.0737.8745.1727.80.0420.9425.4415.90.0614.5640.7587.10.0545.7614.8490.60.0640.9674.5

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value0.1790.3530.2580.240.2740.2130.1960.2310.2630.2420.2840.2440.1970.2890.2790.265
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1313101010108.5158.5168.3168.7149.4598.8929.7429.7438.4358.4368.2458.6268.0058.0047.893
Percentage of DefinedBenefitPlanServiceCost7649.73798.30.04165.54407.53983.60.03998.14242.93772.30.03381.04025.63430.60.03457.44185.32984.80.02868.82978.5

us-gaap:RetirementPlanNameDomain


Defined
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
Value14131110118.6838.4678.99.0769.9059.9488.878.6329.105
Percentage of DefinedBenefitPlanServiceCost7863.13955.84286.44529.64102.94076.54319.93852.83451.04093.03502.83635.24381.73150.5

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.2030.2030.0530.0540.0530.053-0.045-0.046-0.045-0.045-0.079-0.079-0.079-0.0790.190.1890.190.190.3070.3070.307
Percentage of DefinedBenefitPlanServiceCost113.457.50.020.922.119.30.0-21.6-23.0-19.50.0-30.0-32.6-27.80.077.596.465.70.0110.0115.8

us-gaap:DerivativeGainOnDerivative us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeGainOnDerivative

us-gaap:CommodityContract, us-gaap:OperatingExpense


Derivative
Period End2021-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302015-09-302015-06-302014-09-302014-06-302014-03-312013-09-30
Value0.0020.1910.00.4160.0060.010.0140.00.0030.00.0490.0930.0510.010.0530.0080.040.052
Percentage of DerivativeGainOnDerivative100.0100.00.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:Sales


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-30
Value0.0260.0470.0720.2290.0410.0790.1150.1060.00.0640.0190.020.00.0020.0550.00.00.00.00.00.00.00.1130.1120.0090.0430.050.1350.00.0
Percentage of DerivativeGainOnDerivative1300.00.00.00.00.00.00.055.50.015.40.0333.30.014.30.00.00.00.00.00.00.00.00.0211.3112.5107.50.0259.60.00.0

us-gaap:EnergyRelatedDerivative, us-gaap:CostOfSales


Derivative
Period End2021-06-302021-03-312019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value0.00.249-0.0560.7431.2246.7930.013-0.0030.904-0.2750.710.164-0.350.9920.7410.4641.0160.4370.4960.028
Percentage of DerivativeGainOnDerivative0.00.00.0178.60.0113216.7130.00.00.00.01449.0176.30.01945.17410.05800.02540.00.0953.80.0

us-gaap:EnergyRelatedDerivative, us-gaap:OperatingExpense


Derivative
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302019-03-312018-09-302017-09-302017-06-302017-03-312016-06-302015-06-302014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.9030.733-11.587-0.8150.007120.0950.883-0.0040.670.3730.3680.2390.0510.0150.0080.0120.0050.011
Percentage of DerivativeGainOnDerivative45150.00.00.0-426.70.02979.61583.30.0-133.30.0401.13680.0450.9637.537.50.023.10.00.0

us-gaap:EnergyRelatedDerivative, us-gaap:Sales


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.01.0390.3080.8260.03.6930.4141.148-0.0980.0270.2390.038-0.309-0.3051.4780.026-0.016-0.0511.4460.2550.472-0.8412.9960.5170.251-0.099-1.1491.4723.4011.793
Percentage of DerivativeGainOnDerivative0.00.00.00.00.01933.50.00.0-1633.3270.01707.10.00.0-10166.70.00.0-32.7-54.80.00.0925.5-8410.00.0975.53137.5-190.40.00.00.00.0

us-gaap:DerivativeLossOnDerivative us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeLossOnDerivative

us-gaap:CommodityContract, us-gaap:CostOfSales


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value26000.047000.071000.0198000.039000.076000.0100000.0106000.0064000.014000.020000.07000.013000.056000.03000.08000.01000.000116000.0113000.0-9000.0-41000.0334000.0-138000.0
Percentage of DerivativeLossOnDerivative100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:CommodityContract, us-gaap:OperatingExpense


Derivative
Period End2021-03-312020-09-302020-06-302020-03-312016-03-312015-03-31
Value1000.06000.01000.019000.04000.05000.0
Percentage of DerivativeLossOnDerivative2.13.02.625.00.00.0

us-gaap:EnergyRelatedDerivative, us-gaap:CostOfSales


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-06-302018-03-312017-06-302017-03-312016-03-312015-03-312014-12-312014-09-302013-03-312012-12-312012-09-30
Value-48000.02264000.01125000.0190000.0-111000.02981000.056000.0-13000.0202000.0287000.0447000.013000.0635000.0631000.02265000.0-14000.011911000.0-2479000.0
Percentage of DerivativeLossOnDerivative-67.61143.42884.6250.0-111.02812.30.0-185.71553.83587.544700.00.00.0544.02004.40.00.00.0

us-gaap:EnergyRelatedDerivative, us-gaap:OperatingExpense


Derivative
Period End2020-09-302020-06-302020-03-312019-09-302018-09-302018-06-302018-03-312017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-06-302013-09-302012-12-312012-09-30
Value1115000.069000.02848000.0815000.0-96000.0112000.0688000.04000.0-2938000.0657000.0-373000.02815000.0-4102000.03774000.0-368000.0746000.0-25000.0705000.0468000.0-145000.0
Percentage of DerivativeLossOnDerivative563.1176.93747.4768.9-480.01600.05292.350.00.00.00.00.00.00.00.00.0277.8-510.90.00.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value36353533333333313132312929302927272727252525252323232321212121191919161414141414141414
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentDividendsOrDistributions


Equity
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
Value1.552.557.1777.3-2.02.02.87.24.17.79.365103.38.06.62510-2.5108.52717-2.8142.8143.1063.6293.5192.204-0.5595.82-0.5940.5943.3086.2290.3587.6316.1718.175-4.859.050.1252.3750.00.0-7.81
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:EquityMethodInvestmentDividendsOrDistributions dei:LegalEntity

ida:IdahoPowerCompany


Equity
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
Value1.552.556.1276.5-2.02.01.36.354.17.78.59.63.38.05.59.4-2.5107.45216-2.8142.8142.3312.7793.5192.204-1.3844.97-0.5940.5942.3585.3290.3586.8566.1717.55-4.859.05-1.0751.0750.00.04.3
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.085.489.0100.0100.046.488.2100.0100.090.891.9100.0100.083.091.7100.0100.087.495.0100.0100.075.076.6100.0100.0247.685.4100.0100.071.385.6100.089.8100.092.4100.0100.0-860.045.30.00.0-55.1

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


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
Value2.3132.3172.553.962.6872.3162.8254.1662.9972.3810.2316.6651.5374.0154.1055.2320.5921.445-0.779121.367-0.0422.4925.5273.27-0.163.4646.4141.510.983112.758-2.2930.107-1.1231.304-1.9281.4194.4552.085-4.447-1.2941.5643.4420.38-2.378
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.7432.552.7342.9281.9872.4532.923.12.0342.2310.3225.5640.6834.1424.1994.151-0.3371.254-0.673110.501-0.0932.7814.3342.530.1283.6665.180.7211.2462.8845.102-0.3782.6342.4792.906-0.2664.2937.8463.741-3.4280.8583.5435.4021.987
Percentage of IncomeLossFromEquityMethodInvestments75.4110.1107.273.973.9105.9103.474.467.993.7139.483.544.4103.2102.379.3-56.986.886.490.236.6221.4111.678.477.4-80.0105.880.847.7126.825.4185.016.52461.7-220.7222.913.8302.5176.1179.477.1-66.3226.5156.9522.9

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value-1607000.0-1606000.0-260000.0-1481000.0-1481000.0-7385000.04893000.0-1631000.0-10020000.0
Percentage of IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value-1607000.0-1606000.0-260000.0-1481000.0-1481000.0-7385000.04893000.0-1631000.0-10020000.0
Percentage of IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate

us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2012-1.535291710-0.58271512-3.942717105.7544426156.4153825115.124372911-1.7973823147.435402517-0.262371713-4.311246.744133.899308.829
Percentage of IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2012-1.324291710-0.397261511-3.8642617105.8854325154.3863824115.368372911-1.5863722144.0844124180.699381814-3.13247.15144.521319.389
Percentage of IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate99.0100.686.398.998.299.568.498.197.398.498.198.498.099.9102.398.598.098.968.498.798.3100.3104.898.798.8101.488.398.398.5102.154.9102.498.7106.2-266.8101.5103.2108.672.6102.3106.0107.0116.0102.8106.3

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncomeTaxReconciliationOtherAdjustments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-8196000.0-6157000.027433000.0-13390000.0-8915000.0-5282000.022883000.0-11013000.0-6833000.0-6151000.036408000.0-18031000.0-9996000.0-5601000.029089000.0-21832000.0-11042000.0-5743000.031925000.0-19224000.0-11102000.0-5279000.029920000.0-13612000.0-12297000.0-5032000.07560000.03353000.0-8985000.0-3898000.08727000.04390000.0-6692000.0-4942000.0
Percentage of IncomeTaxReconciliationOtherAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationOtherAdjustments dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-7629000.0-5453000.026158000.0-12766000.0-8345000.0-4728000.021722000.0-10606000.0-6068000.0-5608000.035034000.0-17037000.0-9392000.0-5350000.027984000.0-20537000.0-10416000.0-5414000.032185000.0-19576000.0-10334000.0-5054000.030252000.0-13492000.0-11556000.0-5226000.06827000.04066000.0-8238000.0-4496000.08259000.05352000.0-6412000.0-5165000.0
Percentage of IncomeTaxReconciliationOtherAdjustments93.188.695.495.393.689.594.996.388.891.296.294.594.095.596.294.194.394.3100.8101.893.195.7101.199.194.0103.990.3121.391.7115.394.6121.995.8104.5

us-gaap:IncomeTaxReconciliationTaxCreditsInvestment

us-gaap:IncomeTaxReconciliationTaxCreditsInvestment


Income
Period End2020-12-312019-03-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-312014-06-302014-03-312013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.0160.00.53.0810.0-1.8751.8751.4221.01.0-0.50.0-0.95-0.950.00.00.0-0.8250.8253.355-6.752.8953.855-29.1830.0-4.512
Percentage of IncomeTaxReconciliationTaxCreditsInvestment100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:IncomeTaxReconciliationTaxCreditsInvestment dei:LegalEntity

ida:IdahoPowerCompany


Income
Period End2020-12-312019-03-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-06-302015-03-312014-06-302014-03-312013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.0160.00.53.0810.0-1.8751.8751.4221.00.00.50.00.0-0.95-0.950.00.00.0-0.8250.8253.355-6.752.8953.855-29.1830.0-4.512
Percentage of IncomeTaxReconciliationTaxCreditsInvestment100.00.0100.0100.00.0100.0100.0100.0100.00.0-100.00.00.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


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
Value44-42.219191019-49.38922120.447-44.733366.51312-25.65615-1.81718-48.935234.67828-43.305140.66121-34.7429.7181013-27.0973.9887.69920-32.519125.31916-23.2157.6371113-26.919.82.70920-29.144
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value44-42.193-2.952427-49.34422120.451-44.63136-34.426-1.797-25.459231547-48.727234.66528-43.282140.65722-34.6289.5191013-27.0753.9757.66920-32.389115.30816-22.9987.4771112-26.79.7322.663
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities99.999.9-15.1245.7140.899.999.999.8100.999.8100.0-528.6-14.299.2156.7-840.1260.899.6100.099.7100.099.999.799.4100.699.798.099.8100.199.999.799.6100.299.699.699.8100.299.197.9102.097.399.299.398.3

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable


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
Value8.57217-35.565247.24712-44.858226.77316-40.144217.72415-50.326369.8098.264-7.8285.87-2.6055.225-19.0271.9775.68712-27.697-1.495-10.2525-19.874105.8067.84-12.0612.668-1.56310-16.359-7.071152220-44.078-20.42729
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedIncomeTaxesPayable dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1.42617-11.4741.978-0.26522-32.078.7198.8316-30.6548.6912215-39.56822-17.94131-25.4710.052-2.60310-10.7634.613-9.97533-35.071-3.535-11.99927-15.0294.3076.141118.47113-14.022-4.564-16.279-10.648123371-72.062
Percentage of IncreaseDecreaseInAccruedIncomeTaxesPayable16.6101.932.38.1-3.7173.671.539.5130.4100.376.439.7288.1100.078.660.9-182.9382.6325.40.999.9205.256.6233.3-175.4273.4126.6236.5117.1107.375.639.2105.8144.4-70.2502.8897.1-44.199.5150.679.0148.3347.2163.5

us-gaap:IncreaseDecreaseInOtherCurrentAssets

us-gaap:IncreaseDecreaseInOtherCurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value67-19.4034.028-32.82725-1.26812-20.07225-9.112-0.091-28.76822-6.30915-35.68746-29.95218-42.30745-10.78214-28.42937-8.65515-19.03238-21.68616-34.8151-21.577-6.165-16.76528-1.24244-2.191-22.4190.054-6.7625.995
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentAssets dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value67-19.4144.023-32.81925-1.29712-20.05825-9.132-0.098-28.75422-6.32915-35.67746-29.9718-42.28845-10.7914-28.41237-8.67915-19.0238-21.69116-34.78951-21.61-6.165-16.76528-1.24144-2.191-22.4190.054-6.7625.995
Percentage of IncreaseDecreaseInOtherCurrentAssets100.0100.199.9100.0100.1102.3100.099.9100.1100.2107.7100.0100.1100.3100.0100.0100.0100.1100.0100.0100.0100.199.899.9100.0100.3100.099.9100.0100.0100.099.9100.0100.2100.0100.0100.099.9100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3.2332.4252.868-7.9487.9545.1223.142-13.2915.6133.7375.229-7.4353.8985.1564.027-9.9580.5016.4472.168-10.268-9.11213-7.4710.04-8.16415-5.487-0.4520.1797.531-3.434-1.2991.5594.993-1.999-2.7321.043-4.8123.54610-3.836-8.4435-3.376
Percentage of IncreaseDecreaseInOtherCurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherCurrentLiabilities dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3.2772.4512.865-7.9527.9525.2073.011-13.3135.5893.8435.195-7.4723.8715.2284.0-9.9780.4766.4982.129-10.283-9.13113-7.4740.036-8.18716-5.512-0.4640.1647.588-3.464-1.3161.5134.988-2.004-2.7331.044-4.8133.54410-3.833-8.44335-3.379
Percentage of IncreaseDecreaseInOtherCurrentLiabilities101.4101.199.9100.1100.0101.795.8100.299.6102.899.3100.599.3101.499.3100.295.0100.898.2100.1100.2100.2100.090.0100.3100.4100.5102.791.6100.8100.9101.397.099.9100.3100.0100.1100.099.9100.099.9100.0100.0100.1

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1051000.02234000.01348000.0-505000.01925000.01995000.0525000.0957000.0
Percentage of IncreaseDecreaseInOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value1062000.02245000.01358000.0-493000.01935000.01996000.0
Percentage of IncreaseDecreaseInOtherNoncurrentAssets101.0100.5100.797.6100.5100.1

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3000.01902000.0-434000.0144000.0-279000.0-418000.0400000.0639000.0
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentLiabilities dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value-4000.02003000.0-439000.0138000.0-180000.0-425000.0
Percentage of IncreaseDecreaseInOtherNoncurrentLiabilities-133.3105.3101.295.864.5101.7

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities


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-6.478-2.83324-0.2152.1599.672269.094-12.103-19.542.781-5.482-15.691-30.04.837-24.232-4.687-33.0491910-19.051-5.075125.599-3.31-28.0654.46-7.082-8.034-21.4794.816-3.96238-13.681-28.85-38.423-1.78115-123.0892.9761635-3.828-28.6362652
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities dei:LegalEntity

ida:IdahoPowerCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-6.478-2.83324-0.2152.1599.672269.094-12.103-19.542.782-5.483-15.691-30.04.834-24.229-4.687-33.0491910-19.051-5.075125.6-3.311-28.0654.46-7.082-8.034-21.4794.816-3.96238-13.681-28.849-38.423-1.78115-123.0892.9761635-96.847-28.636
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.02530.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
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
Value13000.013000.014000.035000.016000.010000.09000.059000.08000.09000.06000.0131000.046000.038000.016000.059000.044000.041000.013000.097000.053000.038000.011000.0105000.036000.040000.015000.091000.01000.01000.002000.02000.04000.0-1000.04000.05000.05000.01000.012000.019000.014000.0-5000.030000.041000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsCapitalizedAdjustment

us-gaap:InterestCostsCapitalizedAdjustment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3.0193.0052.9932.9692.8862.732.7142.6662.7332.592.5672.5062.6062.4731.5882.3852.4082.3122.9682.5892.3932.2442.4942.5932.5922.3652.1772.1782.1451.9641.9521.904
Percentage of InterestCostsCapitalizedAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestCostsCapitalizedAdjustment dei:LegalEntity

ida:IdahoPowerCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value3.0193.0052.9932.9692.8862.732.7142.6662.7332.592.5672.5062.6062.4731.5882.3852.4082.3122.9682.5892.3932.2442.4942.5932.5922.3652.1772.1782.1451.9641.9521.904
Percentage of InterestCostsCapitalizedAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseOther

us-gaap:InterestExpenseOther


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.6113.5193.7413.6423.5573.8123.8353.7483.6853.4533.3813.1892.1622.9582.9442.8272.7562.7142.6862.6052.5672.4152.4382.2562.1992.0291.9891.9081.9461.8591.9071.8121.7321.7521.8161.7171.6861.655
Percentage of InterestExpenseOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestExpenseOther dei:LegalEntity

ida:IdahoPowerCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value3.6063.5143.7213.6373.5443.8133.8113.7413.6773.4293.3663.1742.1482.9452.9072.8112.742.6982.6532.5462.5022.352.3952.2042.1291.9781.9251.8591.891.7981.8081.7241.6371.6481.681.6171.5791.561.4881.0261.3111.2131.2270.8521.178
Percentage of InterestExpenseOther99.999.999.599.999.6100.099.499.899.899.399.699.599.499.698.799.499.499.498.897.797.597.398.297.796.897.596.897.497.196.794.895.194.594.192.594.293.794.30.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value74000.074000.073000.073000.072000.024000.024000.024000.024000.025000.024000.031000.032000.032000.042000.042000.042000.047000.046000.046000.055000.055000.055000.053000.053000.053000.053000.0
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-0.836-0.8369.315-0.747-0.747-0.74714-0.488-0.488-0.488-5.956-0.721-0.722-0.7217.402-0.471-0.47-0.4711.296-0.563-0.563-0.564-0.881-0.667-0.667-0.6678.901-0.432-0.432-0.432-3.305-0.464-0.465-0.4657.857-0.265-0.265-0.2652.355-0.234-0.234
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax dei:LegalEntity

ida:IdahoPowerCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-0.836-0.8369.315-0.747-0.747-0.74714-0.488-0.488-0.488-5.956-0.721-0.722-0.7217.402-0.471-0.47-0.4711.296-0.563-0.563-0.564-0.881-0.667-0.667-0.6678.901-0.432-0.432-0.432-3.305-0.464-0.465-0.4657.857-0.265-0.265-0.2652.355-0.234-0.234
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value290000.0289000.0-3229000.0259000.0259000.0259000.0-5166000.0170000.0169000.0169000.02065000.0250000.0250000.0250000.0-2461000.0302000.0302000.0302000.0-832000.0362000.0362000.0361000.0567000.0428000.0428000.0428000.0-5713000.0277000.0277000.0278000.02122000.0298000.0298000.0298000.0-5043000.0170000.0170000.0170000.0-1512000.0150000.0150000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax dei:LegalEntity

ida:IdahoPowerCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value290000.0289000.0-3229000.0259000.0259000.0259000.0-5166000.0170000.0169000.0169000.02065000.0250000.0250000.0250000.0-2461000.0302000.0302000.0302000.0-832000.0362000.0362000.0361000.0567000.0428000.0428000.0428000.0-5713000.0277000.0277000.0278000.02122000.0298000.0298000.0298000.0-5043000.0170000.0170000.0170000.0-1512000.0150000.0150000.0
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value1126000.01125000.01006000.01006000.01006000.0658000.0657000.0657000.0971000.0972000.0971000.0773000.0772000.0773000.0925000.0925000.0925000.01095000.01095000.01095000.0709000.0709000.0710000.0762000.0763000.0763000.0435000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value-1052000.0-1051000.0-933000.0-933000.0-934000.0-634000.0-633000.0-633000.0-947000.0-947000.0-947000.0-742000.0-740000.0-741000.0-883000.0-883000.0-883000.0-1048000.0-1049000.0-1049000.0-654000.0-654000.0-655000.0-709000.0-710000.0-710000.0-382000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value-290000.0-289000.0-259000.0-259000.0-259000.0-170000.0-169000.0-169000.0-250000.0-250000.0-250000.0-302000.0-302000.0-302000.0-362000.0-362000.0-361000.0-428000.0-428000.0-428000.0-277000.0-277000.0-278000.0-298000.0-298000.0-298000.0-170000.0-170000.0-170000.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherGeneralExpense

us-gaap:OtherGeneralExpense


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
Value0.5150.654-0.4851.0750.9361.1211.4071.061.091.1631.1411.1761.0771.1773.3973.2963.1493.344-2.563.5713.4813.6963.7893.5983.8673.8763.3993.4123.6883.773.2043.4593.643.8469.0781.0020.8321.1271.5730.6070.9131.0541.5641.4620.7490.84
Percentage of OtherGeneralExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap: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-1190000.0-3238000.0-2514000.0-1954000.0-2499000.0-3490000.0-2540000.0-1862000.0-1010000.0-2913000.0-2286000.0-1681000.0-2498000.0-2687000.0-3234000.0-1479000.0-820000.0-2921000.0-1232000.0-1780000.0-173000.0-1923000.0-1344000.0-1013000.0-925000.0494000.0-668000.0-3247000.0-399000.0-771000.0-989000.0-1110000.0-779000.0-419000.0-3873000.0756000.0-1975000.0-827000.0-756000.0-1811000.0-1196000.0-724000.0-957000.0-2252000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense dei:LegalEntity

ida:IdahoPowerCompany


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
Value950000.0-528000.0-777000.0-600000.0-797000.0-867000.0-296000.015000.0821000.0-77000.0-236000.0226000.0365000.0-145000.0-1057000.0-59000.0346000.0-299000.0-117000.0-697000.01064000.0204000.0-282000.06000.0167000.0796000.0-899000.0-1837000.0720000.0-71000.0-172000.0-1019000.0336000.0226000.0-746000.01921000.0-852000.0-559000.0224000.0-605000.0-475000.0-303000.0-153000.0-1745000.0
Percentage of OtherNoncashIncomeExpense-79.816.330.930.731.924.811.7-0.8-81.32.610.3-13.4-14.65.432.74.0-42.210.29.539.2-615.0-10.621.0-0.6-18.1161.1134.656.6-180.59.217.491.8-43.1-53.919.3254.143.167.6-29.633.439.741.916.077.5

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
Value-550000.0-797000.0-2546000.079000.0-1115000.0-3826000.0-1515000.019000.0-176000.085000.0-3184000.0-793000.0-581000.086000.0-2298000.029000.0-284000.072000.0-1153000.0-27000.01056000.0-1020000.082000.0-326000.0451000.0-1008000.0-627000.0-5281000.02782000.0-1836000.0-107000.0-995000.0-534000.0-1837000.0-477000.0-999000.0102000.01034000.0-861000.0-746000.0-663000.0-1026000.0-1092000.0-358000.0-1203000.0-2265000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities dei:LegalEntity

ida:IdahoPowerCompany


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-550000.0-797000.0-2545000.078000.0-1115000.0-3796000.0-4202000.083000.0-83000.085000.0-3138000.0-742000.0-526000.086000.0-2270000.0166000.0-284000.072000.0-1108000.07000.01121000.0-1020000.0177000.0-326000.0451000.0-1008000.0-622000.0-5281000.02783000.0-1837000.0-102000.0-999000.0-535000.0-1837000.0-491000.0-1012000.0103000.01033000.0-845000.0-750000.0-665000.0-405000.0-1092000.0-384000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.098.7100.099.2277.4436.847.2100.098.693.690.5100.098.8572.4100.0100.096.1-25.9106.2100.0215.9100.0100.0100.099.2100.0100.0100.195.3100.4100.2100.0102.9101.3101.099.998.1100.5100.339.5100.0107.3

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value03026000.011000.0447000.04183000.013000.004107000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation0.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecurities dei:LegalEntity

us-gaap:PaymentsToAcquireAvailableForSaleSecurities

ida:IdahoPowerCompany


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value290.0750.0963.23100.2120.230.24100.9440.1330.0958.1080.0830.3942.7715.0748.6341.1480.061130.469
Percentage of PaymentsToAcquireAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value221000.0171000.075000.096000.03230000.0
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesEquity100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity dei:LegalEntity

ida:IdahoPowerCompany


Payments
Period End2021-06-302021-03-312020-06-302020-03-31
Value221000.0171000.096000.03230000.0
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesEquity100.0100.0100.0100.0

us-gaap:PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired

us-gaap:PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.8295.3352.7192.2257.4581.9360.00.02.6870.00.00.00.00.00.00.032-0.206-0.0370.350.6030.050.00.9054.0533.193.6672.48
Percentage of PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired100.0100.0100.0100.0100.0100.00.00.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireShortTermInvestments

us-gaap:PaymentsToAcquireShortTermInvestments


Payments
Period End2021-06-302021-03-312020-12-31
Value0.0250.0
Percentage of PaymentsToAcquireShortTermInvestments0.0100.00.0

us-gaap:PensionAndOtherPostretirementBenefitContributions

us-gaap:PensionAndOtherPostretirementBenefitContributions


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value110.9181.023300.949122.524312.223120.6632012111.431411.8152.1051.4530111.6541.18329101.6321.187237.4881.3490.8220111.3220.229101.613351.894180.9170.5931.332611.5191.561
Percentage of PensionAndOtherPostretirementBenefitContributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitContributions dei:LegalEntity

ida:IdahoPowerCompany


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value110.9181.023300.949122.525312.223120.6632012111.399411.8152.1051.4530111.6541.18329101.6261.163237.4791.3410.81220111.3220.229101.613351.894180.9170.5931.33261
Percentage of PensionAndOtherPostretirementBenefitContributions100.0100.0100.0100.0100.0100.0100.099.9100.0100.0100.099.9100.0100.097.8100.0100.0100.0100.0100.1100.0100.0100.099.9100.099.698.0100.099.999.499.099.999.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:PensionAndOtherPostretirementBenefitExpense


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.1677.3677.2397.2537.2187.266.9476.9636.9296.965116.9957.0047.0347.2247.1747.1737.347.4067.3917.3597.4257.5397.5377.5137.618236.996.9396.998237.3546.9997.673277.3825.3444.5534.2544.4423.2362.796
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense dei:LegalEntity

ida:IdahoPowerCompany


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302010-12-312010-09-30
Value7.1677.3677.2397.2387.2187.266.9476.9476.9296.965116.987.0047.0347.197.1917.1737.347.4067.4077.3597.4257.5397.5217.5137.612236.9836.9296.991237.3316.9847.673277.3824.2544.442
Percentage of PensionAndOtherPostretirementBenefitExpense100.0100.0100.099.8100.0100.0100.099.8100.0100.0100.099.8100.0100.099.5100.2100.0100.0100.0100.2100.0100.0100.099.8100.099.999.999.999.999.9100.099.799.8100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6000.0-17000.0-23000.0-354000.0-3249000.0-10000.0-1172000.0-1307000.0-35000.0-20000.04000.0-43000.0-274000.0-2651000.0-348000.04000.0-4000.00-428000.0-67000.0-478000.0-1139000.0-853000.00-136000.0-2182000.01048000.010000.061000.01149000.0-248000.0611000.0-1797000.0828000.0-2327000.0-160000.0-3589000.01014000.0-1757000.060000.063000.0749000.0-516000.0-2485000.0-29000.0-335000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities dei:LegalEntity

ida:IdahoPowerCompany


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-24000.015000.00-347000.0-3236000.04000.0-897000.0-1270000.0-14000.00-1000.0-43000.0-276000.0-2644000.0-241000.0000-346000.0-55000.0-477000.0-1139000.0-650000.0-13000.0-197000.0-3915000.00000-187000.0-291000.0-1807000.0-14000.0-226000.0-159000.0-3574000.00-1207000.008000.0-8000.0-438000.0-2513000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities-400.0-88.2-0.098.099.6-40.076.597.240.0-0.0-25.0100.0100.799.769.30.0-0.00.080.882.199.8100.076.20.0144.9179.40.00.00.00.075.4-47.6100.6-1.79.799.499.60.068.70.012.7-1.184.9101.1

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.641.557211.3851.7910.8391.2531.2811.2331.3131.2351.3221.2261.2241.2341.3271.3081.121.24121.0961.085312.724
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity dei:LegalEntity

ida:IdahoPowerCompany


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1.641.557211.3851.7910.8391.2531.2811.2331.3131.2351.3221.2261.2241.2341.3271.3081.121.24121.0961.085312.724
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfProductiveAssets

us-gaap:ProceedsFromSaleOfProductiveAssets


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302011-12-312011-09-302010-12-312010-09-30
Value1.1571.0960.7231.3350.3930.6930.3210.6950.7230.553190.1475.0860.7011.5525.3010.00.00.00.00.0-0.248
Percentage of ProceedsFromSaleOfProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0

us-gaap:ProceedsFromSaleOfProductiveAssets dei:LegalEntity

ida:IdahoPowerCompany


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302011-12-312011-09-302010-12-312010-09-30
Value1.1571.0960.7231.3350.3930.6930.3210.6950.7230.553190.1475.0860.7011.5525.3010.00.00.00.00.0-0.248
Percentage of ProceedsFromSaleOfProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-119000.0488000.01679000.0757000.01803000.0983000.0587000.0652000.0-1000.01012000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions


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
Value7.7957.7697.767.377.1497.2727.2556.8036.6986.3566.2886.0475.9856.0334.2295.7125.6115.2325.8785.935.2384.9855.5665.6545.3785.1874.7494.6444.4594.0793.9823.7333.5283.6153.4443.547.8337.6167.226.576.3655.3294.6733.8584.3613.659
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions dei:LegalEntity

ida:IdahoPowerCompany


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value7.7957.7697.767.377.1497.2727.2556.8036.6986.3566.2886.0475.9856.0334.2295.7125.6115.2325.8785.935.2384.9855.5665.6545.3785.1874.7494.6444.4594.0793.9823.7333.5283.6153.4443.547.8337.6167.226.576.3655.3294.6733.858
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value7.7957.7697.767.3697.1497.2727.2556.8036.6996.3566.2886.0475.9856.0334.2295.7125.6115.2325.8785.9315.2384.9855.5665.6545.3785.1874.7494.6454.4594.0793.9823.7343.5283.6153.4443.5417.8327.616
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity dei:LegalEntity

ida:IdahoPowerCompany


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7.7957.7697.767.3697.1497.2727.2556.8036.6996.3566.2886.0475.9856.0334.2295.7125.6115.2325.8785.9315.2384.9855.5665.6545.3785.1874.7494.6454.4594.0793.9823.7343.5283.6153.4443.5417.8327.6167.226.576.3655.3294.6733.8584.362
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-836000.0-836000.0-747000.0-747000.0-747000.0-747000.0-488000.0-488000.0-488000.0-488000.0-722000.0-721000.0-722000.0-721000.0-470000.0-471000.0-470000.0-471000.0-563000.0-563000.0-563000.0-564000.0-667000.0-667000.0-667000.0-667000.0-432000.0-432000.0-432000.0-432000.06622000.0-464000.0-465000.0-465000.0-265000.0-265000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-836000.0-836000.0-747000.0-747000.0-747000.0-747000.0-488000.0-488000.0-488000.0-488000.0-722000.0-721000.0-722000.0-721000.0-470000.0-471000.0-470000.0-471000.0-563000.0-563000.0-563000.0-564000.0-667000.0-667000.0-667000.0-667000.0-432000.0-432000.0-432000.0-432000.0-465000.0-464000.0-465000.0-465000.0-265000.0-265000.0
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-7.0100.0100.0100.0100.0100.0

us-gaap:RegulatedOperatingRevenueElectricNonNuclear

us-gaap:RegulatedOperatingRevenueElectricNonNuclear


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value359315315424317290292385315349311407338309304406331
Percentage of RegulatedOperatingRevenueElectricNonNuclear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedOperatingRevenueElectricNonNuclear dei:LegalEntity

ida:IdahoPowerCompany


Regulated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value315424317290292385315349311407338309304406331
Percentage of RegulatedOperatingRevenueElectricNonNuclear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedOperatingRevenueOther

us-gaap:RegulatedOperatingRevenueOther


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-30
Value1.5972412216.6952017177.99514188.5577.40119-51.087262820-21.87623221821221717221819
Percentage of RegulatedOperatingRevenueOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RegulatedOperatingRevenueOther us-gaap:ProductOrService

ida:Derivativerevenues


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
Value2.1477.9372.474162.1634.116.448110.4132.7187.4983.4631.6025.983
Percentage of RegulatedOperatingRevenueOther134.432.719.875.432.320.237.162.25.218.940.340.521.630.1

ida:IdahoFixedCostAdjustment


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-0.5516105.2264.53216106.7767.58211115.0945.799139.522-0.0443.4815.237
Percentage of RegulatedOperatingRevenueOther-34.467.380.224.667.779.862.937.894.881.159.759.578.469.9-18.6-0.212.125.0

us-gaap:RepaymentsOfDebt dei:LegalEntity, us-gaap:DebtInstrument

us-gaap:RepaymentsOfDebt

ida:IdahoPower, ida:FirstMortgageBonds2.95Seriesdue2022Domain


Repayments
Period End2020-07-29
Value75
Percentage of RepaymentsOfDebt100.0

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued


Stock
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0001920000.092000.033000.01016000.03031000.0061000.0770000.02237000.06000.03000.0247000.01813000.00031000.03112000.00-26000.029000.03497000.006000.08000.02451000.05000.006000.02126000.02031000.00001944000.0000882000.0
Percentage of StockIssuedDuringPeriodValueTreasuryStockReissued0.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0100.00.00.00.0100.0

us-gaap:StockholdersEquityOther

us-gaap:StockholdersEquityOther


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value27000.025000.06000.022000.023000.022000.023000.021000.027000.026000.0-4216000.024000.019000.0326000.0-3151000.01439000.0941000.0830000.01135000.01089000.01248000.0-985000.01109000.01089000.01202000.0310000.02204000.01445000.01246000.0562000.01175000.02015000.01142000.0241000.0420000.01025000.01226000.0878000.0-83000.0769000.0825000.0948000.0181000.0
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes

us-gaap:TaxesExcludingIncomeAndExciseTaxes


Taxes
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
Value9.0079.3278.5368.7278.6836.988.8279.3778.8597.4868.9119.1189.2777.9558.6148.8438.6787.5958.2878.2038.7387.8098.2868.1938.527.0638.348.2418.1057.3187.0178.0548.1727.5287.0127.8498.17.1997.3027.1827.2116.9165.6455.8055.68
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TaxesExcludingIncomeAndExciseTaxes dei:LegalEntity

ida:IdahoPowerCompany


Taxes
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value9.0079.3278.5368.7278.6836.988.8279.3778.8597.4868.9119.1189.2777.9558.6148.8438.6787.5958.2878.2038.7387.8098.2868.1938.527.0638.348.2418.1057.3187.0178.0548.1727.5287.0127.8498.17.1997.3027.1827.2116.9165.6455.805
Percentage of TaxesExcludingIncomeAndExciseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpense

us-gaap:UtilitiesOperatingExpense


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value267254262299238238237271244291262292256258248284250248243270235233233260246232258273242240255262220201211221195197220237199200191218204218
Percentage of UtilitiesOperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpense dei:LegalEntity

ida:IdahoPowerCompany


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value267254262299238238237271244291262292256258248284250248243270235233233260246232258273242240255262220201211221195197220237199200191218204
Percentage of UtilitiesOperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization

us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value43434243424243424142424141403940453636363535353434343333323233323231313129303030292929292828
Percentage of UtilitiesOperatingExpenseDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization dei:LegalEntity

ida:IdahoPowerCompany


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value434342434242434241424241414039404536363635353534343433333232333232313131293030302929292928
Percentage of UtilitiesOperatingExpenseDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseFuelUsed

us-gaap:UtilitiesOperatingExpenseFuelUsed


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value31335159313037462051305321273454203639732935416646314467345558644149495521324041192943512737
Percentage of UtilitiesOperatingExpenseFuelUsed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseFuelUsed dei:LegalEntity

ida:IdahoPowerCompany


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value313351593130374620513053212734542036397329354166463144673455586441494955213240411929435127
Percentage of UtilitiesOperatingExpenseFuelUsed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8885968283899287878894919286908487879287878586838783102848780101848379948986789784857074717572
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations dei:LegalEntity

ida:IdahoPowerCompany


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value88859682838992878788949192869084878792878785868387831028487801018483799489867897848570747175
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpensePurchasedPower

us-gaap:UtilitiesOperatingExpensePurchasedPower


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value966770104616170935862769262616275614975744848607151426375624354744942457145343566362530623021
Percentage of UtilitiesOperatingExpensePurchasedPower100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpensePurchasedPower dei:LegalEntity

ida:IdahoPowerCompany


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value9667701046161709358627692626162756149757448486071514263756243547449424571453435663625306230
Percentage of UtilitiesOperatingExpensePurchasedPower100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityOwnershipPercentage dei:LegalEntity

us-gaap:VariableInterestEntityOwnershipPercentage

ida:IdahoPowerCompany


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312012-12-31
Value0.330.3300.330.3300.330.330.330000.3300
Percentage of VariableInterestEntityOwnershipPercentage100.0100.00.0100.0100.00.0100.0100.0100.00.00.00.0100.00.00.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-07-232021-04-232021-02-122020-10-232020-07-242020-04-242020-02-142019-10-252019-07-262019-04-262019-02-152018-10-262018-07-272018-04-272018-02-162017-10-272017-07-282017-04-282017-02-172016-10-212016-07-222016-04-222016-02-122015-10-232015-07-242015-04-242015-02-132014-09-302014-07-252014-04-252014-02-142013-11-012013-07-262013-04-262013-02-152012-10-262012-07-272012-04-272012-02-172011-10-282011-07-29
Value5050505050505050505050505050505050505050505050505050505050505050505050505050494949
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:AllowanceForUncollectibleAccountsAsAPercentageOfCustomerReceivables

ida:AllowanceForUncollectibleAccountsAsAPercentageOfCustomerReceivables


Allowance
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-31
Value4.86.56.14.33.11.9
Percentage of AllowanceForUncollectibleAccountsAsAPercentageOfCustomerReceivables100.0100.0100.0100.0100.0100.0

ida:Allowanceforuncollectibleaccountsasapercentageofcustomerreceivables

ida:Allowanceforuncollectibleaccountsasapercentageofcustomerreceivables


Allowanceforuncollectibleaccountsasapercentageofcustomerreceivables
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.70.0430.0310.0191.40.0170.021
Percentage of Allowanceforuncollectibleaccountsasapercentageofcustomerreceivables100.0100.0100.0100.0100.0100.0100.0

ida:Annualfixedcostadjustmentmechanismdeferral ida:RateCases, ida:RegulatoryJurisdiction

ida:Annualfixedcostadjustmentmechanismdeferral

ida:IdahoFixedCostAdjustment, stpr:ID


Annualfixedcostadjustmentmechanismdeferralida:
Period End2021-06-012020-06-012019-06-012018-06-01
Value38353415
Percentage of Annualfixedcostadjustmentmechanismdeferral100.0100.0100.0100.0

ida:Annualfixedcostadjustmentmechanismdeferral ida:RateCases, ida:RegulatoryJurisdiction, us-gaap:SubsequentEventType

ida:IdahoFixedCostAdjustment, stpr:ID, us-gaap:SubsequentEvent


Annualfixedcostadjustmentmechanismdeferralida:
Period End2021-06-012020-06-01
Value3835
Percentage of Annualfixedcostadjustmentmechanismdeferral100.0100.0

ida:BondsIssuableMaximumAmountEnding dei:LegalEntity

ida:BondsIssuableMaximumAmountEnding

ida:IdahoPowerCompany


Bonds
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-05-192015-12-312014-12-312010-01-31
Value250025002500250025002000200020001500
Percentage of BondsIssuableMaximumAmountEnding100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:CapitalStockIssuanceCosts dei:LegalEntity

ida:CapitalStockIssuanceCosts

ida:IdahoPowerCompany


Capital
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
Value2097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.02097000.0-2097000.02097000.02097000.0-2097000.02097000.0-2097000.0-2097000.0-2097000.0
Percentage of CapitalStockIssuanceCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:Debtinstrumentinterestratelimit dei:LegalEntity

ida:Debtinstrumentinterestratelimit

ida:IdahoPowerCompany


Debtinstrumentinterestratelimitdei:
Period End2020-12-31
Value7.0
Percentage of Debtinstrumentinterestratelimit100.0

ida:DebtinstrumentunusedborrowingcapacityRegulatoryAuthorityAmount dei:LegalEntity, us-gaap:SubsequentEventType

ida:DebtinstrumentunusedborrowingcapacityRegulatoryAuthorityAmount

ida:IdahoPower, us-gaap:SubsequentEvent


Debtinstrumentunusedborrowingcapacity
Period End2020-10-23
Value190
Percentage of DebtinstrumentunusedborrowingcapacityRegulatoryAuthorityAmount100.0

ida:DeferredTaxLiabilitiesPrepaidPensionCost

ida:DeferredTaxLiabilitiesPrepaidPensionCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value16413210810314012612265142
Percentage of DeferredTaxLiabilitiesPrepaidPensionCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:DeferredTaxLiabilitiesPrepaidPensionCost dei:LegalEntity

ida:IdahoPowerCompany


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value16413210810314012612265142
Percentage of DeferredTaxLiabilitiesPrepaidPensionCost100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:DefinedBenefitPlanMinimumFundingRequirementforNextFiscalYear us-gaap:StatementScenario, us-gaap:RetirementPlanType

ida:DefinedBenefitPlanMinimumFundingRequirementforNextFiscalYear

srt:ScenarioForecast, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-12-31
Value4000000.0
Percentage of DefinedBenefitPlanMinimumFundingRequirementforNextFiscalYear100.0

ida:DefinedBeneiftPlanAccumulatedOtherComprehensiveIncomeBeforeTaxBeforeRegulatoryAsset us-gaap:RetirementPlanType

ida:DefinedBeneiftPlanAccumulatedOtherComprehensiveIncomeBeforeTaxBeforeRegulatoryAsset

us-gaap:DefinedBenefitPostretirementHealthCoverage


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.5610.093-0.1083.0460.049
Percentage of DefinedBeneiftPlanAccumulatedOtherComprehensiveIncomeBeforeTaxBeforeRegulatoryAsset100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value437347278277263
Percentage of DefinedBeneiftPlanAccumulatedOtherComprehensiveIncomeBeforeTaxBeforeRegulatoryAsset6674.4374022.6-258131.59097.8538224.5

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5848304134
Percentage of DefinedBeneiftPlanAccumulatedOtherComprehensiveIncomeBeforeTaxBeforeRegulatoryAsset891.952681.7-28606.51373.369969.4

ida:DividendDistributionRestrictionAmount dei:LegalEntity

ida:DividendDistributionRestrictionAmount

ida:IdahoPowerCompany


Dividend
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value130013001300130011001300130013001200120012001200110010001100110011001100100011001000916980965915811944942880860848810757805794806720741723714625
Percentage of DividendDistributionRestrictionAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

ida:DividendDistributionRestrictionAmount us-gaap:ConsolidatedEntities

srt:ParentCompany


Dividend
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1500150015001500130015001500150014001400140014001300
Percentage of DividendDistributionRestrictionAmount115.4115.4115.4115.4118.2115.4115.4115.4116.7116.7116.7116.7118.2

ida:EquityCapitalRatio dei:LegalEntity

ida:EquityCapitalRatio

ida:IdahoPowerCompany


Equity
Period End2020-12-31
Value54.0
Percentage of EquityCapitalRatio100.0

ida:GuarantorObligationsTotalReclamationTrustFund dei:LegalEntity

ida:GuarantorObligationsTotalReclamationTrustFund

ida:BridgerCoalCompany


Guarantor
Period End2021-06-302021-03-312020-12-312020-09-30
Value198199183157
Percentage of GuarantorObligationsTotalReclamationTrustFund100.0100.0100.0100.0

ida:IncreaseofLongtermPurchaseObligationsAmount dei:LegalEntity

ida:IncreaseofLongtermPurchaseObligationsAmount

ida:IdahoPowerCompany


Increaseof
Period End2020-09-30
Value28
Percentage of IncreaseofLongtermPurchaseObligationsAmount100.0

ida:IncreaseofLongtermPurchaseObligationsAmount dei:LegalEntity, us-gaap:LongTermContractForPurchaseOfElectricPower

ida:IdahoPowerCompany, ida:CogenerationAndPowerProductionPurchaseCommitmentMember


Increaseof
Period End2021-06-302021-03-31
Value2915
Percentage of IncreaseofLongtermPurchaseObligationsAmount0.00.0

ida:IndentureUnusedBorrowingCapacityAmount dei:LegalEntity

ida:IndentureUnusedBorrowingCapacityAmount

ida:IdahoPowerCompany


Indenture
Period End2020-12-31
Value1800
Percentage of IndentureUnusedBorrowingCapacityAmount100.0

ida:IndentureUnusedBorrowingCapacityavailable dei:LegalEntity

ida:IndentureUnusedBorrowingCapacityavailable

ida:IdahoPowerCompany


Indenture
Period End2020-12-31
Value534
Percentage of IndentureUnusedBorrowingCapacityavailable100.0

ida:InvestmentTaxCreditsMaximuminRateCase ida:RateCases

ida:InvestmentTaxCreditsMaximuminRateCase

ida:May2018TaxReformSettlementStipulation


Investment
Period End2020-12-31
Value45
Percentage of InvestmentTaxCreditsMaximuminRateCase100.0

ida:LetterOfCreditMaximumBorrowingCapacity dei:LegalEntity

ida:LetterOfCredit