HE


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

Table of contents


dei:LegalEntity
us-gaap:CommonStockValue
dei:LegalEntity
us-gaap:CommonStockParOrStatedValuePerShare
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:CommonStockSharesIssued
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTax
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:CostsAndExpenses
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxExpenseBenefit
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxesPaid
dei:LegalEntity
dei:LegalEntity
us-gaap:InterestAndFeeIncomeLoansAndLeases
dei:LegalEntity
us-gaap:InterestExpense
dei:LegalEntity
us-gaap:InterestIncomeExpenseNet
dei:LegalEntity
us-gaap:NetIncomeLoss
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:ProfitLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
dei:LegalEntity, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementBusinessSegments

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax
dei:LegalEntity, us-gaap:ProductOrService
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:TimingOfTransferOfGoodOrService
us-gaap:TimingOfTransferOfGoodOrService

us-gaap:Revenues
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementBusinessSegments, us-gaap:StatementEquityComponents
us-gaap:StatementBusinessSegments

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

us-gaap:Liabilities
dei:LegalEntity
us-gaap:ConsolidatedEntities

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

us-gaap:StockholdersEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
dei:LegalEntity
us-gaap:AssetsCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:CashAndCashEquivalentsAtCarryingValue
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:AccountsReceivableNetCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:InventoryRawMaterialsAndSupplies
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:PrepaidExpenseAndOtherAssetsCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:Land

us-gaap:MachineryAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:ConstructionInProgressGross

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:Goodwill

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:OtherAssetsNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:OtherAssets
dei:LegalEntity
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:AccountsPayableCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:LiabilitiesCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:OperatingLeaseLiabilityCurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:OtherLiabilitiesCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:TaxesPayableCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:TimeDepositMaturitiesYearOne

us-gaap:LongTermDebt
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument
dei:LegalEntity
us-gaap:LongTermDebtNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:DeferredIncomeTaxLiabilitiesNet
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:ConsolidationItems
us-gaap:RetirementPlanType
dei:LegalEntity
us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

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

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

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

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

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

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

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

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

us-gaap:StockholdersEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
dei:LegalEntity
us-gaap:CommonStockValue
dei:LegalEntity
us-gaap:AdditionalPaidInCapital
dei:LegalEntity
us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:DeferredIncomeTaxExpenseBenefit
dei:LegalEntity
dei:LegalEntity
us-gaap:IncreaseDecreaseInAccountsPayable
dei:LegalEntity
us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:NetIncomeLoss
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ProfitLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
dei:LegalEntity, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementBusinessSegments

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:LongtermDebtType

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:PaymentsOfDividendsCommonStock
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:EffectiveIncomeTaxRateContinuingOperations
dei:LegalEntity

us-gaap:DeferredTaxLiabilities
dei:LegalEntity

us-gaap:UnrecognizedTaxBenefits
dei:LegalEntity

he:DebtSecuritiesAvailableForSaleRealizedGainLossExpenseBenefit

he:DecreaseInLongTermDebtFromPreviousRepayments
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
he:DefinedBenefitPlanImpactOfPublicUtilitiesCommissionDecisionsAndOrders
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
he:DefinedBenefitPlanNetPeriodicBenefitCostAdjustedForImpactOfPublicUtilitiesCommissionDecisionsAndOrders
us-gaap:RetirementPlanType

he:DefinedContributionPlanContributionsByEmployer
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
he:EquityInEarningsOfSubsidiaries
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:FinancingReceivablePortfolioSegment
he:FinancingReceivableConversionOfDebt
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

he:IncreaseDecreaseInAccountsPayableAndInterestAndDividendsPayable

he:IncreaseDecreaseInPensionAndOtherPostretirementDefinedBenefitPlansLiability
dei:LegalEntity

he:IncreaseDecreaseInPrepaidAndAccruedIncomeTaxesAndUtilityRevenueTaxes
dei:LegalEntity
dei:LegalEntity
he:InterestExpenseAndOtherCharges
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

he:InterestExpenseOnOtherThanDepositsAndBankBorrowings

he:InterestPaidToNonAffiliates
dei:LegalEntity
dei:LegalEntity
he:NoncashOrPartNoncashIncreasesPropertyPlantAndEquipmentContributionsInAidOfConstruction

he:OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostReclassificationAdjustmentFromAOCINetOfTax
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

he:OtherComprehensiveIncomeLossDefinedBenefitPlanPriorServiceCostCreditRecognizedInNetPeriodicBenefitCostReclassificationAdjustmentFromAOCITax
dei:LegalEntity

he:OtherComprehensiveIncomeReclassificationAdjustmentForImpactOfDecisionAndOrdersOfThePUCIncludedInRegulatoryAssetsNetOfTax
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

he:OtherComprehensiveIncomeReclassificationAdjustmentForImpactOfDecisionAndOrdersOfThePUCIncludedInRegulatoryAssetsTax
dei:LegalEntity

he:OtherNoninterestExpenseCARESAct

he:OtherNoninterestExpenseCleaningAndSanitationCostsCARESAct

he:OtherNoninterestExpenseIncrementalCompensationExpenseCARESAct

he:PaymentsForAffordableHousingProjectInvestments
us-gaap:LongTermContractForPurchaseOfElectricPower
he:PowerPurchaseAgreementFirmCapacityVolume

he:ProceedsFromPaymentsForOtherBankBorrowings
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

he:ProceedsFromSaleOfAffordableHousingProjectInvestments

he:ProceedsfromPrincipalRepaymentsonInvestmentandMortgageRelatedSecuritiesAvailableForSale
dei:LegalEntity
he:PublicUtilitesRPSAPerformanceIncentiveMechanismRewardThresholdInterpolatedRPSRateGoalYearOneAndTwo

he:PublicUtilitiesDecouplingFilingPerformanceIncentiveMechanismNet
dei:LegalEntity
dei:LegalEntity
he:PublicUtilitiesEarningsSharingMechanismSharingBetweenCustomersAndUtilitiesPercentage
dei:LegalEntity, us-gaap:SubsequentEventType
he:PublicUtilitiesExceptionalProjectRecoveryMechanismEstimatedCapitalCosts

he:PublicUtilitiesIncrementalAffiliateTransactionRefundAndPublicUtilitiesCommissionOrderedAdjustment
dei:LegalEntity

he:PublicUtilitiesIncrementalMajorProjectInterimRecoveryAndExceptionalProjectRecoveryMechanismAdjustment
dei:LegalEntity
dei:LegalEntity
he:PublicUtilitiesInterimGeneralRateIncreaseEffectiveInterestRateOfReturn
dei:LegalEntity, us-gaap:SubsequentEventType

he:PublicUtilitiesPilotProcessAnnualCap
dei:LegalEntity
he:PublicUtilitiesRPSAPerformanceIncentiveMechanismFailureToMeetRPSTargetsPenaltyRate
dei:LegalEntity
he:PublicUtilitiesRPSAPerformanceIncentiveMechanismRewardThresholdInterpolatedRPSRateGoalAfterYearThree
dei:LegalEntity
he:PublicUtilitiesRPSAPerformanceIncentiveMechanismRewardThresholdInterpolatedRPSRateGoalYearThree
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
he:PublicUtilitiesSolarProjectAnnualProductionTarget
dei:LegalEntity
he:PublicUtilitiesSolarProjectMajorProjectInterimRecoveryRequestedAmount
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
dei:LegalEntity
he:PublicUtilitiesStipulatedReturnOnAverageCommonEquityRate
dei:LegalEntity, us-gaap:SubsequentEventType

he:PublicUtilityAnnualIncrementalRateAdjustmentMechanismAdjustedRevenue
dei:LegalEntity
dei:LegalEntity
he:PublicUtilityDecouplingOrderCallCenterPerformanceMaximumPenaltyAmount
dei:LegalEntity
he:PublicUtilityDecouplingOrderCallCenterPerformanceMaximumPenaltyPendingAdjustedAmount
dei:LegalEntity
he:PublicUtilityDecouplingOrderPerformanceIncentiveMechanismServiceReliabilityMaximumPenaltyPendingAdjustedAmount

he:PublicUtilityIncreaseDecreaseInAccruedEarningsSharingCreditsToBeRefunded
dei:LegalEntity

he:PublicUtilityNetReceivableUnderTariff
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
he:ServicingAssetAtAmortizedValueAmountCapitalized
dei:LegalEntity, us-gaap:FinancialInstrument
he:ServicingAssetatAmortizedValueAmountCapitalized
us-gaap:AwardType
he:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionForfeitedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
he:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue
us-gaap:AwardType
he:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncreaseAboveTargetCancelledInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
he:ShareBasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsIncreaseAboveTargetinPeriodWeightedAverageGrantDateFairValue
dei:LegalEntity
he:StateRefundableCredit

he:StockIssuedDuringPeriodValueDirectorAndOfficerCompensatoryPlans
dei:LegalEntity
he:SuppliesPrintingAndPostageExpense
dei:LegalEntity
he:UtilitiesOperatingExpenseOtherTaxes
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:AdjustmentForAmortization
dei:LegalEntity

us-gaap:AffordableHousingProgramAssessments
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted
us-gaap:AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted, us-gaap:FinancingReceivablePortfolioSegment
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:CapitalExpendituresIncurredButNotYetPaid
dei:LegalEntity

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentPeriodicPayment

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType

us-gaap:DefinedContributionPlanCostRecognized
dei:LegalEntity

us-gaap:Depreciation
dei:LegalEntity
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:HedgingDesignation

us-gaap:DividendsCommonStockCash
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
dei:LegalEntity
us-gaap:AwardType
dei:LegalEntity
us-gaap:EquipmentExpense
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
dei:LegalEntity
us-gaap:FederalDepositInsuranceCorporationPremiumExpense
dei:LegalEntity
us-gaap:FeesAndCommissionsMortgageBankingAndServicing

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableModificationsPostModificationRecordedInvestment2
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted
us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted, us-gaap:FinancingReceivablePortfolioSegment
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:GainLossOnSaleOfMortgageLoans

us-gaap:GainLossOnSalesOfLoansNet

us-gaap:GainOnSaleOfInvestments
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:GainOrLossOnSaleOfStockInSubsidiary
us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInFuelInventories
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets
dei:LegalEntity
dei:LegalEntity
us-gaap:IncreaseDecreaseInRawMaterialsPackagingMaterialsAndSuppliesInventories

us-gaap:IncreaseDecreaseInReceivables

us-gaap:IncreaseDecreaseInRegulatoryLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInTradingSecurities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
dei:LegalEntity
us-gaap:InformationTechnologyAndDataProcessing
dei:LegalEntity
us-gaap:InterestAndDividendIncomeOperating
dei:LegalEntity
us-gaap:InterestAndDividendIncomeSecurities

us-gaap:InterestCostsCapitalizedAdjustment
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:InterestExpenseBorrowings
dei:LegalEntity
us-gaap:InterestExpenseDeposits
dei:LegalEntity
us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss
dei:LegalEntity
us-gaap:LaborAndRelatedExpense
dei:LegalEntity
us-gaap:MarketingExpense

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:NoninterestExpense
dei:LegalEntity
us-gaap:NoninterestIncome
dei:LegalEntity
us-gaap:OccupancyNet

us-gaap:OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAfterTax

us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsTax

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
dei:LegalEntity
us-gaap:OtherNoninterestExpense

us-gaap:OtherOperatingActivitiesCashFlowStatement
dei:LegalEntity

us-gaap:PaymentsForOriginationAndPurchasesOfLoansHeldForSale
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:PaymentsForProceedsFromBusinessesAndInterestInAffiliates
us-gaap:ConsolidationItems

us-gaap:PaymentsForProceedsFromLoansAndLeases

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:PaymentsOfDividendsMinorityInterest
dei:LegalEntity
us-gaap:PaymentsOfDividendsPreferredStockAndPreferenceStock
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireFederalHomeLoanBankStock

us-gaap:PaymentsToAcquireHeldToMaturitySecurities

us-gaap:PensionAndOtherPostretirementBenefitExpense
dei:LegalEntity

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfFederalHomeLoanBankStock

us-gaap:ProceedsFromSaleOfLoansHeldForSale
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:ProceedsFromSaleOfMortgageLoansHeldForSale

us-gaap:ProceedsFromShortTermDebt
dei:LegalEntity
dei:LegalEntity
us-gaap:ProfessionalFees

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanLeaseAndOtherLosses
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:ProvisionForLoanLossesExpensed
dei:LegalEntity
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:RepaymentsOfShortTermDebt
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ShortTermDebtType, us-gaap:SubsequentEventType

us-gaap:RevenueNotFromContractWithCustomer
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:ServicingAssetAtAmortizedValueAmortization1
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues
dei:LegalEntity
us-gaap:UtilitiesOperatingExpenseDepreciationAndAmortization
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:UtilitiesOperatingExpenseFuelUsed
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:UtilitiesOperatingExpensePurchasedPower
dei:LegalEntity, he:MajorVendor
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries

dei:EntityCommonStockSharesOutstanding
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
he:AccumulatedOtherComprehensiveIncomeDefinedBenefitPlansExcludingImpactOfPublicUtilitiesCommissionDecisionsAndOrdersBeforeTax
us-gaap:RetirementPlanType

he:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTaxAdjustedForRegulatoryImpacts
dei:LegalEntity
dei:LegalEntity
he:AffordableHousingProgramEquityInvestment
us-gaap:StatementBusinessSegments
he:AllowanceForDoubtfulAccountsReceivableAccruedUnbilledRevenuesAndOtherAccountsReceivable
us-gaap:MeasurementInputType
he:AssetBackedSecuritiesMeasurementInput
dei:LegalEntity
he:AssetsNoncurrentExcludingPropertyPlantAndEquipmentNet
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:AssetsSoldUnderAgreementsToRepurchase
he:AssetsSoldUnderAgreementsToRepurchaseFairValuePlusAccruedInterest
us-gaap:AssetsSoldUnderAgreementsToRepurchase, us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods

he:AvailableForSaleSecuritiesPledgedAtCarryingValueAsCollateral

he:AvailableForSaleSecuritiesPledgedAtCarryingValueAsCollateralForSecuritiesSoldUnderRepurchaseAgreement
dei:LegalEntity
he:CashierChecks
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
he:DebtInstrumentCovenantPaydownOfLoanBalanceMaximumBalance
us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod, us-gaap:LongtermDebtType
he:DebtInstrumentRedemptionAmount

he:DeferredTaxAssetsOperatingLeaseLiabilities
dei:LegalEntity

he:DeferredTaxLiabilitiesDeferredExpensePostretirementBenefits
dei:LegalEntity

he:DeferredTaxLiabilitiesOperatingLeaseRightofUseAsset
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
he:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeIncomeTaxes
us-gaap:RetirementPlanType
dei:LegalEntity
he:DistributionRestrictionsCapitalizationRate
dei:LegalEntity
he:EquityInvestmentsAffordableHousingProgram
dei:LegalEntity
he:FDICInsuranceAssessment
dei:LegalEntity, us-gaap:FinancialInstrument
he:FairValueInputsUnpaidPrincipalBalanceAsset

he:FinancialReceivablesLoansCollateralizedbyRealEstateinForeclosure
he:FinancingReceivableTroubledDebtRestructuringsAndTroubledDebtRestructuringsThatSubsequentlyDefaulted

he:FinancingReceivableNetChargeOffsRecoveriesToAverageLoans
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

he:FinancingReceivableNonaccrualWithAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

he:FinancingReceivableTermLoans
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
he:GoodwillMeasurementInput
us-gaap:ValuationTechnique

he:InterestAndDividendsPayableIncludingDividendsOnPreferredStockOfSubsidiaries
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
he:InvestmentInSubsidiaries
us-gaap:StatementGeographical
he:LesseeOperatingLeaseLeaseNotYetCommencedExpectedReimbursementForImprovements

he:LesseeOperatingLeaseNotInServiceAnnualCapacityPayment

he:LoanBalancesRelatedToInterestOfIndividualDirectors

he:LoanBalancesRelatedToInterestOfIndividualDirectorsExecutiveOfficersAndRelatedInterests
dei:LegalEntity
he:NonUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation

he:NoninterestBearingDomesticDepositCommercialChecking
dei:LegalEntity
he:NonutilitiesPropertyPlantandEquipmentAccumulatedDepreciation
dei:LegalEntity
he:NonutilitiesPropertyPlantandEquipmentNet
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

he:OtherBankBorrowings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
dei:LegalEntity, us-gaap:RetirementPlanType
he:OtherComprehensiveIncomeDefinedBenefitPlansCumulativeImpactOfPublicUtilitiesCommissionDecisionsAndOrders
us-gaap:RetirementPlanType

he:OverdrawnDepositAccounts
us-gaap:BusinessAcquisition, us-gaap:StatementScenario
he:PercentageofExpectedRenewablePortfolioStandard
us-gaap:StatementScenario

he:PublicUtilitiesERPEAMImplementationProjectCostsAccruedCarryingCostsOncePutIntoService
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
dei:LegalEntity
he:PublicUtilitiesERPSystemBenefitsSavingsLiability
dei:LegalEntity
he:PublicUtilitiesPropertyPlantAndEquipmentTransmissionDistributionGenerationAndOther
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
he:PublicUtilitiesSavingsCommitmentLiabilityAnnualRate
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
he:PublicUtilitiesSolarProjectCostIncurred
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
he:PublicUtilitiesSolarProjectFederalNonrefundableTaxCredits
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
he:PublicUtilitiesSolarProjectStateNonrefundableTaxCredits
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
he:PublicUtilityERPEAMRegulatoryLiabilityForOperationAndMaintenanceExpenseReductions
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
he:PublicUtilityERPEAMRegulatoryLiabilityToBeFlowedThroughToCustomers

he:RealEstateLoansServicedForInvestors
dei:LegalEntity
he:ReserveForAdditionalInvestigationAndEstimatedCleanupCosts
us-gaap:StatementBusinessSegments
he:RevenueTaxesAccrued
us-gaap:CounterpartyName
he:SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimFinancialInstruments
dei:LegalEntity, us-gaap:FinancialInstrument
he:SensitivityAnalysisOfFairValueTransferorsInterestsInTransferredFinancialAssetsImpactOf25BasisPointAdverseChangeInPrepaymentSpeed
dei:LegalEntity, us-gaap:FinancialInstrument
he:SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof25BasisPointAdverseChangeinPrepaymentSpeed
us-gaap:FinancialInstrument
dei:LegalEntity, us-gaap:FinancialInstrument
he:SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof25BasisPointsAdverseChangeinDiscountRate
us-gaap:FinancialInstrument
dei:LegalEntity, us-gaap:FinancialInstrument
he:SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointAdverseChangeinPrepaymentSpeed
us-gaap:FinancialInstrument
dei:LegalEntity, us-gaap:FinancialInstrument
he:SensitivityAnalysisofFairValueTransferorsInterestsinTransferredFinancialAssetsImpactof50BasisPointsAdverseChangeinDiscountRate
us-gaap:FinancialInstrument
dei:LegalEntity, us-gaap:FinancialInstrument
he:ServicingAssetAccumulatedAmortization
dei:LegalEntity, us-gaap:FinancialInstrument
he:ServicingAssetNet
us-gaap:AwardType
he:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsGrantDateFairValue
us-gaap:StatementScenario, us-gaap:AwardType
us-gaap:PlanName
he:ShareBasedCompensationNumberOfSharesThatCouldBeIssuedUponVestingAndAchievementOfPerformanceGoals
us-gaap:PlanName
he:ShareBasedCompensationNumberOfSharesThatCouldBeIssuedUponVestingOfRestrictedStockUnitsAndLongTermIncentivePlans
dei:LegalEntity
he:UtilitiesExpectedFixedCapacityChargesAfterFiveThroughFifteenYears
dei:LegalEntity
he:UtilitiesExpectedFixedCapacityChargesYearFive
dei:LegalEntity
he:UtilitiesExpectedFixedCapacityChargesYearFour
dei:LegalEntity
he:UtilitiesExpectedFixedCapacityChargesYearOne
dei:LegalEntity
he:UtilitiesExpectedFixedCapacityChargesYearThree
dei:LegalEntity
he:UtilitiesExpectedFixedCapacityChargesYearTwo
dei:LegalEntity
us-gaap:AccountsAndOtherReceivablesNetCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems

us-gaap:AccountsPayableCurrentAndNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:AccountsReceivableNet
us-gaap:ConsolidatedEntities
dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency
us-gaap:AccrualForEnvironmentalLossContingencies
dei:LegalEntity
us-gaap:AccruedIncomeTaxes
dei:LegalEntity
us-gaap:AccruedLiabilitiesCurrentAndNoncurrent

us-gaap:AccumulatedAmortizationOfOtherDeferredCosts
dei:LegalEntity
us-gaap:AccumulatedDeferredInvestmentTaxCredit
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
dei:LegalEntity
dei:LegalEntity
us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
dei:LegalEntity
us-gaap:AdvancePaymentsByBorrowersForTaxesAndInsurance
dei:LegalEntity
us-gaap:AdvancesFromFederalHomeLoanBanks
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:AdvancesToAffiliate
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:AffordableHousingProgramObligation
dei:LegalEntity
us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
us-gaap:StatementBusinessSegments

us-gaap:AociDerivativeQualifyingAsHedgeExcludedComponentAfterTax

us-gaap:AreaOfRealEstateProperty
dei:LegalEntity
us-gaap:AssetRetirementObligation

us-gaap:AssetsSoldUnderAgreementsToRepurchaseInterestRate
us-gaap:AssetsSoldUnderAgreementsToRepurchase
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods

us-gaap:AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability
us-gaap:AssetsSoldUnderAgreementsToRepurchase
us-gaap:AssetsSoldUnderAgreementsToRepurchaseMaturityPeriods

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesDebtSecurities
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:StatementBusinessSegments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:StatementBusinessSegments
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument
dei:LegalEntity
us-gaap:BankOwnedLifeInsurance
dei:LegalEntity
us-gaap:CapitalizationLongtermDebtAndEquity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:CashAndDueFromBanks

us-gaap:CashCashEquivalentsAndFederalFundsSold
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:CommercialPaper

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

us-gaap:CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:DebtInstrumentCarryingAmount
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:LongtermDebtType
us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:DebtInstrumentRedemptionPeriod, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:MeasurementInputType
us-gaap:DebtInstrumentMeasurementInput
dei:LegalEntity
us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
us-gaap:ConsolidatedEntities

us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostAfterAllowanceForCreditLoss
dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss
dei:LegalEntity, us-gaap:FinancialInstrument
dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
dei:LegalEntity, us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleExcludingAccruedInterest
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:StatementBusinessSegments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:StatementBusinessSegments
us-gaap:FairValueByMeasurementBasis
us-gaap:MeasurementInputType
us-gaap:DebtSecuritiesAvailableForSaleMeasurementInput
dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
dei:LegalEntity, us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss

us-gaap:DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:ConsolidatedEntities
us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsDeferredIncome
dei:LegalEntity

us-gaap:DeferredTaxAssetsGross
dei:LegalEntity

us-gaap:DeferredTaxAssetsOther
dei:LegalEntity

us-gaap:DeferredTaxAssetsRegulatoryAssetsAndLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsOther
dei:LegalEntity

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesOther
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:ConsolidatedEntities, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DepositsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
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us-gaap:FairValueByMeasurementBasis
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us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeNet
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:StatementBusinessSegments
us-gaap:DerivativeLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DueToAffiliateCurrent
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
dei:LegalEntity
us-gaap:EnergyRelatedInventory
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:FinancialInstrument
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
dei:LegalEntity
us-gaap:FederalHomeLoanBankAdvances
dei:LegalEntity
us-gaap:FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds

us-gaap:FederalHomeLoanBankStock
dei:LegalEntity
us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank

us-gaap:FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
dei:LegalEntity
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableAllowanceForCreditLosses
dei:LegalEntity
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableBeforeAllowanceForCreditLossAndFee
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablesPeriodPastDue

us-gaap:FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss
dei:LegalEntity
dei:LegalEntity
us-gaap:FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
us-gaap:Collateral
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:Collateral, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestRevolving
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableNonaccrualNoAllowance
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentNonaccrualStatus
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:FinancingReceivableRecordedInvestmentPastDue

us-gaap:FinancingReceivableRevolving
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:HeldToMaturitySecurities
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateNetCarryingAmount

us-gaap:HeldToMaturitySecuritiesFairValue
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancialInstrument
dei:LegalEntity
us-gaap:InterestBearingDepositLiabilities
dei:LegalEntity
us-gaap:InterestBearingDepositsInBanks

us-gaap:InterestBearingDomesticDepositCertificatesOfDeposits

us-gaap:InterestBearingDomesticDepositChecking

us-gaap:InterestBearingDomesticDepositMoneyMarket

us-gaap:InterestBearingDomesticDepositSavings
us-gaap:ConsolidatedEntities
us-gaap:InterestPayableCurrentAndNoncurrent
dei:LegalEntity
us-gaap:InterestReceivable
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:InvestmentInFederalHomeLoanBankStockFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

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

us-gaap:LessorOperatingLeasePaymentsToBeReceived
us-gaap:CounterpartyName, us-gaap:CreditFacility
us-gaap:LettersOfCreditOutstandingAmount
dei:LegalEntity
us-gaap:LiabilitiesOtherThanLongtermDebtNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:ShortTermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
dei:LegalEntity
us-gaap:LoansAndLeasesReceivableAllowance
dei:LegalEntity
us-gaap:LoansAndLeasesReceivableNetOfDeferredIncome

us-gaap:LoansAndLeasesReceivableNetReportedAmount
dei:LegalEntity

us-gaap:LoansPledgedAsCollateral
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroup
dei:LegalEntity
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
dei:LegalEntity, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:ConsolidatedEntities
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:NoninterestBearingDepositLiabilities

us-gaap:NoninterestBearingDomesticDepositChecking

us-gaap:NotesReceivableGross

us-gaap:NotesReceivableNet

us-gaap:OffBalanceSheetCreditLossLiability
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
dei:LegalEntity
dei:LegalEntity, us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PropertyPlantAndEquipmentByType
dei:LegalEntity
us-gaap:OtherAssetsMiscellaneous
dei:LegalEntity
us-gaap:OtherBorrowings

us-gaap:OtherLiabilities
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:OtherShortTermBorrowings
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:ShortTermDebtType
dei:LegalEntity
us-gaap:OtherSundryLiabilities
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:PostemploymentBenefitsLiabilityCurrentAndNoncurrent
dei:LegalEntity
us-gaap:PropertyPlantAndEquipmentOtherAccumulatedDepreciation
dei:LegalEntity
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentLand
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:QualifiedAffordableHousingProjectInvestmentsCommitment
dei:LegalEntity
us-gaap:RealEstateAcquiredThroughForeclosure

us-gaap:RegulatoryAssets
dei:LegalEntity
dei:LegalEntity, us-gaap:BalanceSheetLocation
dei:LegalEntity, us-gaap:RegulatoryAsset
dei:LegalEntity
us-gaap:RegulatoryAssetsCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:RegulatoryAssetsNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:RegulatoryLiabilities
dei:LegalEntity
dei:LegalEntity, us-gaap:BalanceSheetLocation
dei:LegalEntity, us-gaap:RegulatoryLiability
dei:LegalEntity
us-gaap:RegulatoryLiabilityCurrent
dei:LegalEntity, us-gaap:CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProject
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:RestrictedCashAndCashEquivalents
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
dei:LegalEntity
us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:SecuritiesSoldUnderAgreementsToRepurchase
dei:LegalEntity
us-gaap:CounterpartyName

us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseGross
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:ServicingAsset
dei:LegalEntity
us-gaap:ServicingAssetAtAmortizedValue
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ServicingAssetAtFairValueAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique
us-gaap:FairValueByMeasurementBasis, us-gaap:FairValueByMeasurementFrequency
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType
us-gaap:ServicingAssetMeasurementInput
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
dei:LegalEntity
us-gaap:ShortTermBorrowings
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:ShortTermDebtType
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:ShorttermDebtFairValue
dei:LegalEntity, us-gaap:FairValueByMeasurementBasis
dei:LegalEntity, us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:IncomeTaxAuthority
dei:LegalEntity
us-gaap:TierOneLeverageCapital
dei:LegalEntity
us-gaap:TierOneLeverageCapitalRequiredForCapitalAdequacy
dei:LegalEntity
us-gaap:TierOneLeverageCapitalRequiredToBeWellCapitalized

us-gaap:TimeDepositMaturitiesAfterYearFive

us-gaap:TimeDepositMaturitiesYearFive

us-gaap:TimeDepositMaturitiesYearFour

us-gaap:TimeDepositMaturitiesYearThree

us-gaap:TimeDepositMaturitiesYearTwo

us-gaap:TimeDeposits

us-gaap:TimeDeposits100000OrMore

us-gaap:TradingSecurities
dei:LegalEntity
dei:LegalEntity
us-gaap:UnbilledReceivablesCurrent
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
dei:LegalEntity, us-gaap:ConsolidationItems

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
dei:LegalEntity

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
dei:LegalEntity
us-gaap:FinancialInstrument
us-gaap:UnusedCommitmentsToExtendCredit
us-gaap:ValuationAllowancesAndReservesType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance
dei:LegalEntity, us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:WeightedAverageRateDomesticDeposit

us-gaap:WeightedAverageRateDomesticDepositCertificatesOfDeposit

us-gaap:WeightedAverageRateDomesticDepositChecking

us-gaap:WeightedAverageRateDomesticDepositMoneyMarket

us-gaap:WeightedAverageRateDomesticDepositSavings

Plots across concepts


IncomeStatement
Profit Loss
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Goodwill
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Goodwill
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Earnings Per Share Diluted
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Proceeds From Short Term Debt
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
LiabilitiesBanks
Deposits

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 dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries███▇▇▇▇▇▇▇▇▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▂▂▂▂▁▁▁▁115.515115.515115.515113.678113.678113.678113.678111.696111.696111.696111.696107.634107.634107.634107.634106.818106.818106.818106.818105.388105.388105.388105.388105.388105.388105.388105.388102.88102.88102.88102.8897.78897.78897.78897.78894.91194.91194.91194.911NANANA92.224NANANA
 us-gaap:CommonStockParOrStatedValuePerShare dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiariesNANA6.667e-06NA6.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-066.67e-066.67e-066.67e-066.667e-06NANANA6.667e-06NANANA
 us-gaap:CommonStockSharesIssued dei:LegalEntity,us-gaap:StatementEquityComponents he:HawaiianElectricCompanyAndSubsidiaries,us-gaap:CommonStock███▇▇▇▇▆▆▆▆▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁17.32417.32417.32417.04817.04817.04817.04816.75116.75116.75116.75116.14216.14216.14216.14216.0216.0216.0216.0215.80515.80515.80515.80515.80515.80515.80515.80515.42915.429NA15.429NANANA14.665NANANA14.234NANANA13.831NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock██▇▇▇▆▅▅▅▄▄▄▄▃▃▃▃▃▁109.311109.281109.181109.181109.181109.145108.973108.973108.972108.937108.879108.879108.879108.841108.788108.786108.785108.745108.583NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStockIncludingAdditionalPaidInCapitalNANA109.181NANANA108.973NANANA108.879NANANA108.788108.786108.785108.745108.583108.503108.187107.876107.46107.459107.447107.418102.565102.562101.56101.478101.2699.54299.04498.47197.92897.42597.02396.54196.03895.97595.85395.28994.69194.121NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁109.515109.492NA109.336109.305109.365NA109.363109.255109.268NA109.055108.963109.024NA108.865108.797108.858NA108.472108.133107.781NA107.738107.694103.567NA103.026101.825102.165NA99.81899.24998.54NA97.51896.97996.561NA96.195.55595.182NA93.89193.41492.848
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁109.282109.221NA109.181109.146109.051NA108.973108.938108.913NA108.879108.842108.818NA108.786108.75108.674NA108.268107.962107.62NA107.457107.418103.281NA102.416101.495101.382NA99.20498.6698.135NA97.15796.69396.167NA95.87395.39394.817NA93.69993.15992.572
us-gaap:EarningsPerShareBasic ▄▄▃▄▃▂▄▄▃▃▃▄▃▃▂▄▂▂▃█▃▂▃▃▂▂▂▃▃▃▃▃▃▂▁▃▃▃▂▃▂▂▂▂▂▂0.580.590.460.60.450.310.610.580.390.420.460.610.420.370.30.550.360.310.411.170.410.30.390.470.330.310.320.470.410.450.390.490.410.340.140.490.40.40.360.50.280.30.260.350.310.29
us-gaap:EarningsPerShareDiluted ▄▄▃▄▃▂▄▄▃▃▃▄▃▃▂▄▂▂▃█▃▂▃▃▂▂▂▃▃▃▃▃▃▂▁▃▃▃▂▃▂▂▂▂▂▂0.580.590.460.590.450.310.610.580.390.420.450.60.420.370.30.550.360.310.411.170.410.30.390.470.330.310.320.460.410.450.390.480.410.340.140.490.40.40.360.50.280.30.260.350.310.29
  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
 Cost Ratio dei:LegalEntity he:AmericanSavingsBankFSB▄▄▆▅▂▆▇█▇█▇▆▄▃▃▂▃▁77.2677.13180.41578.64474.71479.73881.28382.54881.68783.05281.25680.49677.10475.41975.16674.28975.32972.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▄▃▃▃▂▄▅▅▄▃▅▅▄▃▃▄▃▂▂▃▁▁▃▅▃▃▆█▇▆▇▇▆▆601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273NANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities91.512NANANA78.505NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities87.67NANANA75.216NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,srt:ParentCompany,srt:ReportableLegalEntities422.697NANANA380.634NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA85.149NA82.17278.50589.293NA93.57689.91687.205NA98.98189.54887.933NA84.33481.71NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA400.554NA398.877380.634421.166NA491.723450.02405.669NA488.21431.699401.18NA429.267394.414NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA79.181NA81.62975.21687.198NA103.23694.0585.653NA100.27386.93881.356NA85.19880.765NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio us-gaap:StatementBusinessSegments he:BankingSegment▆▆▇▇▅▇▇███▇▇▆▆▆▅▆▅▅▅▄▄▃▄▃▂▂▂▁▂▂▂▃▂▄▃▂▂▃▃▃▂▄▄▄▄77.2677.13180.41578.64474.71479.73880.6383.20181.68783.05281.25680.49677.10475.41975.16674.28975.32972.85672.62773.70870.74968.8468.51169.09165.78364.34864.72663.53660.61663.61962.30665.05866.02764.75668.9766.59664.72165.25266.67666.166.31865.31368.71871.42971.63270.914
 Cost Ratio us-gaap:StatementBusinessSegments he:ElectricUtilitySegment▃▃▃▃▂▃▄▅▄▃▅▅▄▃▃▃▃▂▂▃▁▁▃▄▃▃▆█▆▆▇▇▆▆▇█▇▇▇█▆▄▄▄▃▂601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273769.182801.095789.552749.61784.363820.254728.738645.335627.034623.126584.095548.111
 Cost Ratio us-gaap:StatementBusinessSegments us-gaap:AllOtherSegments█▇▆▅▄▄▄▄▄▄▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▂▄▄▄▄▄▄▄▄▄▄▄▁▄▄▄▄1.1180.9510.7070.2150.0160.0060.0030.0040.0140.068-0.1690.1430.0470.0280.120.1270.0770.0950.10.0940.10.0680.087-0.042-0.0340.0720.047-0.005-0.3880.0680.0450.0560.0150.035-0.0050.029-0.005-0.002-0.0110.001-0.737-0.015-0.015-0.014-0.063NA
 EBT Margin dei:LegalEntity he:AmericanSavingsBankFSB▄▄▆▅▂▆▇█▇█▇▆▄▃▃▂▃▁77.2677.13180.41578.64474.71479.73881.28382.54881.68783.05281.25680.49677.10475.41975.16674.28975.32972.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▄▃▃▃▂▄▅▅▄▃▅▅▄▃▃▄▃▂▂▃▁▁▃▅▃▃▆█▇▆▇▇▆▆601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273NANANANANANANANANANANANA
 EBT Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities91.512NANANA78.505NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities87.67NANANA75.216NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,srt:ParentCompany,srt:ReportableLegalEntities422.697NANANA380.634NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA85.149NA82.17278.50589.293NA93.57689.91687.205NA98.98189.54887.933NA84.33481.71NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA400.554NA398.877380.634421.166NA491.723450.02405.669NA488.21431.699401.18NA429.267394.414NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA79.181NA81.62975.21687.198NA103.23694.0585.653NA100.27386.93881.356NA85.19880.765NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems he:EliminationsAndReconcilingItemsNA-0.02NA-0.11-0.14-0.215NA-0.205-0.202-0.032NA-0.055-0.059-0.042NA-0.03-0.014NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments he:BankingSegment▅▅▆▅▃▆▇█▇█▇▆▅▄▃▃▄▂▂▃▁77.2677.13180.41578.64474.71479.73880.6383.20181.68783.05281.25680.49677.10475.41975.16674.28975.32972.85672.62773.70870.749NANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:StatementBusinessSegments he:ElectricUtilitySegment▅▄▄▃▂▅▆█▆▄██▅▄▄▅▃▂▃▄▁601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395NANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity he:AmericanSavingsBankFSBNANANA78.64474.71479.738NA82.54881.68783.05281.25680.49677.10475.41975.16674.28975.32972.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▄▃▃▃▂▄▅▅▄▃▅▅▄▃▃▄▃▂▂▃▁▁▃▅▃▃▆█▇▆▇▇▆▆▇██▇601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273769.182801.095789.552749.61NANANANANANANANA
 Net profit Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities91.512NANANA78.505NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities87.67NANANA75.216NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,srt:ParentCompany,srt:ReportableLegalEntities422.697NANANA380.634NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA85.149NA82.17278.50589.293NA93.57689.91687.205NA98.98189.54887.933NA84.33481.71NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA400.554NA398.877380.634421.166NA491.723450.02405.669NA488.21431.699401.18NA429.267394.414NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA79.181NA81.62975.21687.198NA103.23694.0585.653NA100.27386.93881.356NA85.19880.765NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidationItems he:EliminationsAndReconcilingItemsNA-0.02NA-0.11-0.14-0.215NA-0.205-0.202-0.032NA-0.055-0.059-0.042NA-0.03-0.014NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:StatementBusinessSegments he:BankingSegment▆▆▇▇▅▇▇███▇▇▆▆▆▅▆▅▅▅▄▄▃▄▃▂▂▂▁▂▂▂▃▂▄▃▂▂▃▃▃▂▄▄▄77.2677.13180.41578.64474.71479.73880.6383.20181.68783.05281.25680.49677.10475.41975.16674.28975.32972.85672.62773.70870.74968.8468.51169.09165.78364.34864.72663.53660.61663.61962.30665.05866.02764.75668.9766.59664.72165.25266.67666.166.31865.31368.71871.42971.632NA
 Net profit Margin us-gaap:StatementBusinessSegments he:ElectricUtilitySegment▃▃▃▃▂▃▄▅▄▃▅▅▄▃▃▃▃▂▂▃▁▁▃▄▃▃▆█▆▆▇▇▆▆▇█▇▇▇█▆▄▄▄▃601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273769.182801.095789.552749.61784.363820.254728.738645.335627.034623.126584.095NA
 Operating Margin dei:LegalEntity he:AmericanSavingsBankFSB▄▄▆▅▂▆▇█▇█▇▆▄▃▃▂▃▁77.2677.13180.41578.64474.71479.73881.28382.54881.68783.05281.25680.49677.10475.41975.16674.28975.32972.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▄▃▃▃▂▄▅▅▄▃▅▅▄▃▃▄▃▂▂▃▁▁▃▅▃▃▆█▇▆▇▇▆▆▇██▇601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273769.182801.095789.552749.61NANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities91.512NANANA78.505NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities87.67NANANA75.216NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,srt:ParentCompany,srt:ReportableLegalEntities422.697NANANA380.634NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA85.149NA82.17278.50589.293NA93.57689.91687.205NA98.98189.54887.933NA84.33481.71NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA400.554NA398.877380.634421.166NA491.723450.02405.669NA488.21431.699401.18NA429.267394.414NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA79.181NA81.62975.21687.198NA103.23694.0585.653NA100.27386.93881.356NA85.19880.765NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:StatementBusinessSegments he:BankingSegment▆▆▇▇▅▇▇███▇▇▆▆▆▅▆▅▅▅▄▄▃▄▃▂▂▂▁▂▂▂▃▂▄▃▂▂▃▃▃▂▄▄▄▄77.2677.13180.41578.64474.71479.73880.6383.20181.68783.05281.25680.49677.10475.41975.16674.28975.32972.85672.62773.70870.74968.8468.51169.09165.78364.34864.72663.53660.61663.61962.30665.05866.02764.75668.9766.59664.72165.25266.67666.166.31865.31368.71871.42971.63270.914
 Operating Margin us-gaap:StatementBusinessSegments he:ElectricUtilitySegment▃▃▃▃▂▃▄▅▄▃▅▅▄▃▃▃▃▂▂▃▁▁▃▄▃▃▆█▆▆▇▇▆▆▇█▇▇▇█▆▄▄▄▃▂601.879564.864571.095562.568534.215597.442645.333688.33633.784578.495680.563687.409608.126570.427583.311598.769556.875518.611544.668572.253495.395482.052555.434648.127558.163573.442725.267803.565738.429720.062764.096766.115730.688719.273769.182801.095789.552749.61784.363820.254728.738645.335627.034623.126584.095548.111
  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:AllocatedShareBasedCompensationExpense ▆▆▁▃▅▄▄▅█▅▄▃▆▄▂▂▅▂▃▄▂▂▄▂▄▄▅▄▆▅▄▅▂▄▃▃▄▄▂▂▁▃▂▁▂2.92.60.41.42.41.71.92.33.72.21.91.52.81.71.01.12.21.11.21.61.01.01.71.02.01.82.12.02.82.41.82.51.11.91.21.21.71.81.11.00.51.20.70.60.8NA
us-gaap:ComprehensiveIncomeNetOfTax ▅▂▄▅▄▄▅▅▄▄▄▄▃▂▂▄▃▃▂█▃▃▃▄▃▃▂▃▃▄▄▄▃▃▁▄▃▃▂▄▃▂80.34420.34249.9466.47248.55551.63270.59766.71656.21154.92962.09161.31142.22927.47427.08960.62741.03135.17828.528125.47346.23641.15238.07555.10331.89135.92419.77346.50444.32147.09457.94947.33932.28333.6183.10349.29240.3538.62721.7551.58531.60626.624NANANANA
us-gaap:CostsAndExpenses ▃▂▃▂▂▄▄▅▅▃▅▅▄▃▃▃▃▂▂▂▁▁▂▄▃▃▆▇▆▆▇▇▆▆█▇▇▇██▆▅▄▄▃▃578.401544.915571.543541.866537.389617.484625.171674.227642.851583.678677.046669.984606.478573.985573.609563.64556.385523.7528.968540.613480.789482.109540.81620.081551.182568.356722.799775.994716.382695.443754.154741.13714.36713.407800.875776.018774.862739.044782.858791.865730.658647.258636.495621.91592.033558.333
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▃▃▂▃▂▁▃▃▂▂▂▃▂▂▃▄▂▂▃█▃82.94480.19661.17779.52160.2339.69681.98378.69352.69458.03964.3777.23359.58253.27670.23395.13959.62651.58272.599179.20570.911NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▂▂▂▂▁▂▂▂▂▂▂▂▂▆▅▃▃▄█▄▃▄▅▃▃▃▄▄▄▃▄▄▃▁▄▄▃▃▄▂▃▃▃▃▂18.59915.36510.21914.01810.875.80315.24714.8039.70911.87814.32410.86213.05512.55637.3934.59520.49216.91627.49251.59226.3118.30122.61529.51620.91119.97918.44726.32322.26924.67319.18422.84123.65418.6626.93325.80422.82421.29818.23227.89413.74216.06416.14520.38516.01315.279
us-gaap:IncomeTaxesPaid NANA9.023.00.00.01.09.042.04.022.014.033.03.023.011.017.04.036.05.013.01.013.027.034.01.016.09.040.0-18.016.01.04.0-3.0-14.0-6.0NANA-3.02.09.0-30.0-38.00.0NANA
 us-gaap:IncomeTaxesPaid dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiariesNANA12.029.00.00.00.09.041.05.017.012.030.05.017.01.06.02.01.00.00.00.00.04.0NANA0.00.014.0-8.032.00.00.0-26.0-5.0-1.04.0-1.0NANANANANANANANA
 us-gaap:InterestAndFeeIncomeLoansAndLeases dei:LegalEntity he:AmericanSavingsBankFSB▅▄▅▅▆▆▇██▇▇▇▆▅▅▅▅▄▅▄▄▃▃▃▂▂▃▂▂▁▁▁▁▁▁▂▂▂▃▃▂51.02649.94752.62952.41953.54155.54557.89259.2658.6257.8657.14555.88554.63352.851.98652.2152.31750.74251.20350.44449.6948.43747.13646.41346.03545.19846.27645.53243.85143.68243.40543.33743.62442.60342.81643.8844.47344.88846.546.2445.648NANANANANA
 us-gaap:InterestExpense dei:LegalEntity he:AmericanSavingsBankFSB▁▁▂▃▅▆▇███▇▆▆▅▅▄▅▄▅▅▅▅▄▄▄▄▄▄▄▄▄▃▃▃▄▄▄▄▅▅▆1.3041.4891.722.3483.1463.94.1564.8064.6984.784.374.0393.6773.4533.1882.9143.1352.9193.1853.3353.1583.0772.9772.872.7532.7262.7712.752.6572.632.6592.4682.4742.4762.6012.7412.913.043.1993.5413.769NANANANANA
 us-gaap:InterestIncomeExpenseNet dei:LegalEntity he:AmericanSavingsBankFSB▇▆▆▆▆▇▇▇▇██▇▇▆▆▅▅▅▄▄▄▃▃▂▂▂▂▂▁▁▁▁▁▁▁▁▁▂▂▂▂60.76257.13158.49957.29256.68361.07560.89662.05361.45763.70863.40761.14659.58458.54957.02856.14655.94554.80352.98351.86850.97550.37748.70947.75646.58845.52346.69245.55544.14444.08744.11843.89444.38443.59143.50344.57144.8645.65346.65346.35345.672NANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity he:AmericanSavingsBankFSB█▁30.28429.556NANA14.01415.761NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▆▆▆█▆▃▆▆▅▄▅▇▄▄▄▆▄▃▅▆▅▄▅▆▅▄▄▅▅▅▄▅▄▄▁▅▄▄▄▅▃▃42.17143.62843.31160.33542.59924.17545.63147.04932.84432.39635.56749.98231.43927.74525.62547.75725.91421.73534.38947.24436.12725.63733.26343.27633.11127.14429.38239.14934.535.6932.2638.08728.96324.6994.49538.64529.64627.5726.08438.22917.29419.459NANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities5.607NANANA7.179NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities5.137NANANA6.597NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,srt:ParentCompany,srt:ReportableLegalEntities42.171NANANA42.599NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA6.692NA8.067.1796.067NA5.2694.6665.169NA9.1753.7636.101NA6.4343.632NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA43.628NA60.33542.59924.175NA47.04932.84432.396NA49.98231.43927.745NA47.75725.914NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA5.818NA6.8526.5972.737NA5.7793.426.68NA7.4615.3173.224NA6.3334.304NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ConsolidationItems he:EliminationsAndReconcilingItemsNA-12.51NA-14.912-13.776-8.804NA-11.048-8.086-11.849NA-16.636-9.08-9.325NA-12.767-7.936NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▄▄▃▄▃▂▄▄▃▃▃▄▃▃▂▄▃▂▃█▃▂▃▃▂▂▂▃▃▃▃▃▃▂▁▃▃▃▂▃▂▂▂▂▂▂63.87264.35850.48565.03248.88733.4266.26363.41942.51245.68849.57365.946.05440.24732.3760.07338.66134.19344.634127.14244.12832.35242.3250.67335.01831.86633.15747.81541.42145.92739.01348.23640.58833.67913.83647.70638.838.31634.22548.40427.13928.46224.69832.44929.26227.126
us-gaap:OperatingIncomeLoss ▇▇▅▇▄▃▇▇▄▅▆▇▅▄▆█▅▄▆█▆▄▅▇▄▄▄▆▅▆▄▆▅▄▁▆▅▅▄▇▄▄▃▄▄▃101.85698.03180.67499.56171.55659.702100.79597.30872.63477.93784.60498.06478.79971.88984.988109.54575.89667.86288.427105.44285.45568.85183.22297.09572.7369.50667.24191.10282.27588.30672.29390.09982.3770.65737.27291.70279.40675.81668.1794.4963.66163.37559.24272.63163.63160.707
us-gaap:ProfitLoss ▄▄▃▄▃▂▄▄▃▃▃▄▃▃▂▄▃▂▃█▃▂▃▃▂▂▂▃▃▃▃▃▃▂▁▃▃▃▂▃▂▂▂▂▂▂64.34564.83150.95865.50349.3633.89366.73663.8942.98546.16150.04666.37146.52740.7232.84360.54439.13434.66645.107127.61344.60132.82542.79351.14435.49132.33933.6348.28641.89446.439.48648.70741.06134.15214.30948.17739.27338.78934.69848.87527.61228.93525.17132.9229.73527.599
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▄▃▃▃▂▄▅▆▄▃▅▆▄▃▃▄▃▂▂▃▁▁▃▄▃▃▆█▆▆▇▇▆▆▇█▇▇▇█▆▄▄▄▃▂680.257642.946652.217641.427608.945677.186725.966771.535715.485661.615761.65768.048685.277645.874658.597673.185632.281591.562617.395646.055566.244550.96624.032717.176623.912637.862790.04867.096798.657783.749826.447831.229796.73784.064838.147867.72854.268814.86851.028886.355794.319710.633695.737694.541655.664619.04
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax ▂▁▃▁▁▃▅▅▄▂▆▅▃▂▃▄▃▂▃▃▂▁▃▅▃▃▆█▆▆▇▇▆▆▇█▇▇▇█▆▅▄▄▃▃604.827541.3652.217550.412532.921618.605725.966725.111660.421577.39761.65710.168621.587575.465658.597673.185632.281591.562617.395646.055566.244550.96624.032717.176623.912637.862790.04867.096798.657783.749826.447831.229796.73784.064838.147867.72854.268814.86851.028886.355794.319710.633695.737694.541655.664619.04
us-gaap:Revenues ▄▃▃▃▂▄▅▆▄▃▅▆▄▃▃▄▃▂▂▃▁▁▃▄▃▃▆█▆▆▇▇▆▆▇█▇▇▇█▆▄▄▄▃▂680.257642.946652.217641.427608.945677.186725.966771.535715.485661.615761.65768.048685.277645.874658.597673.185632.281591.562617.395646.055566.244550.96624.032717.176623.912637.862790.04867.096798.657783.749826.447831.229796.73784.064838.147867.72854.268814.86851.028886.355794.319710.633695.737694.541655.664619.04
  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 ██▇▇▇▆▆▆▆▆▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁15606.72915358.67315004.00714542.36114480.713849.01813745.25113517.9713537.76613360.10513104.05112911.55412884.10412702.71813099.82812742.8512693.80512543.27512425.50612198.98511979.23911870.50611790.19611573.46611439.63111273.44711184.16110670.47110617.14310458.0710340.04410429.01210238.14510298.56910149.1329904.8279821.9579632.9529592.7319264.3639241.0719127.5369085.344NANANA
us-gaap:Liabilities ██▇▇▇▆▆▆▆▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁13205.10713003.08712632.21212184.83712155.00911538.2211430.69811240.98811294.88711142.29710907.47810745.21610746.79310576.64810968.14910605.53510584.48310443.39410324.4610096.3049978.7649894.0349828.2639618.1729506.8189341.2459358.448834.778821.9718677.8498578.6818739.2548579.2038657.0118520.9748263.3998211.8888044.5618026.4897692.3127694.5717596.6927567.414NANANA
us-gaap:LiabilitiesAndStockholdersEquity ██▇▇▇▆▆▆▆▆▅▅▅▅▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁15606.72915358.67315004.00714542.36114480.713849.01813745.25113517.9713537.76613360.10513104.05112911.55412884.10412702.71813099.82812742.8512693.80512543.27512425.50612198.98511979.23911870.50611790.19611573.46611439.63111273.44711184.16110670.47110617.14310458.0710340.04410429.01210238.14510298.56910149.1329904.8279821.9579632.9529592.7319264.3639241.0719127.5369085.344NANANA
us-gaap:StockholdersEquity ████▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▅▅▅▄▄▄▃▄▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁2367.3292321.2932337.5022323.2312291.3982276.5052280.262242.6892208.5862183.5152162.282132.0452103.0182091.7772097.3862103.0222075.0292065.5882066.7532068.3881966.1821942.1791927.641921.0011898.521897.9091791.4281801.4081760.8791745.9281727.071655.4651624.6491607.2651593.8651607.1351575.7761554.0981531.9491537.7581508.9641496.5511483.637NANANA
  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 dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▅▃▃▂▃▃▅▃▄▃▄▅▅▃▂▁▃▂▂▂▁▁▂▄▄▃▅▆█▇█▆▆█▇██▅▆590.015546.939519.967496.026528.363542.617623.808548.663583.433527.939579.999617.58593.618545.843509.638475.782516.021491.022504.141489.353466.947458.576486.66557.431560.687541.299615.003654.693712.146668.119712.185649.584632.148711.987687.048719.192710.726589.771648.204NANANA626.854NANANA
 us-gaap:AssetsCurrent dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities80.215NA69.212NANANA81.086NANANA88.859NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AssetsCurrent dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities93.738NA80.39NANANA101.428NANANA92.376NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:AssetsCurrent dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA73.23369.21272.67187.14370.62681.08690.24587.48277.01388.85983.69781.239NA71.034NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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us-gaap:CashAndCashEquivalentsAtCarryingValue ▂▃▄▁█▂▁▁▂▁▁▁▂▂▃▂▂▂▃▃▃▄▃247.443277.579341.421193.126574.482205.514196.813176.988198.549186.407169.208172.054254.665244.785261.881202.173210.381234.23278.452284.355257.208334.743300.478NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▂▃▄▂█▂▂▁▁▁▁▁▂258.061291.646358.979215.007603.858236.416227.685176.988198.549186.407169.208172.054254.665NA261.881NANANA278.452NANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:AccountsReceivableNetCurrent dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities25.316NA23.989NANANA24.52NANANA26.483NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:PrepaidExpenseAndOtherAssetsCurrent dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities4.51NA5.197NANANA3.725NANANA5.212NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive dei:LegalEntity,us-gaap:PropertyPlantAndEquipmentByType he:HawaiianElectricCompanyAndSubsidiaries,he:OtherOperatingLeasesNANA19.0NANANANANANA3.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap:PropertyPlantAndEquipmentByType he:OtherOperatingLeasesNANA27.0NANANANANANA11.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ████▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▅▅▅▄▄▄▃▄▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁2367.3292321.2932337.5022323.2312291.3982276.5052280.262242.6892208.5862183.5152162.282132.0452103.0182091.7772097.3862103.0222075.0292065.5882066.7532068.3881966.1821942.1791927.641921.0011898.521897.9091791.4281801.4081760.8791745.9281727.071655.4651624.6491607.2651593.8651607.1351575.7761554.0981531.9491537.7581508.9641496.5511483.637NANANA
 us-gaap:CommonStockValue dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries███▇▇▇▇▇▇▇▇▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▄▄▄▂▂▂▂▁▁▁▁115.515115.515115.515113.678113.678113.678113.678111.696111.696111.696111.696107.634107.634107.634107.634106.818106.818106.818106.818105.388105.388105.388105.388105.388105.388105.388105.388102.88102.88102.88102.8897.78897.78897.78897.78894.91194.91194.91194.911NANANA92.224NANANA
 us-gaap:AdditionalPaidInCapital dei:LegalEntity he:AmericanSavingsBankFSB██▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▂▂▂▁▁▁352.888352.408351.758351.322350.826350.158349.453348.933348.423347.877347.17346.757346.188345.652345.018344.512344.062343.435342.704342.234341.849341.192340.496339.98339.416338.411338.411337.862NANA336.053NANANANANANANANANANANANANANANA
 us-gaap:AdditionalPaidInCapital dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries███▇▇▇▇▇▇▇▇▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▂▂▂▂▁▁▁▁746.987746.987746.987714.824714.824714.824714.824681.305681.305681.305681.305614.667614.667614.667614.675601.487601.486601.491601.491578.921578.926578.926578.93578.93578.933578.933578.938541.447541.449541.449541.452468.045468.045468.045468.045426.921426.922426.921426.921NANANA389.609NANANA
 us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity he:AmericanSavingsBankFSBNANA351.758NANANA349.453NANANA347.17NANANA345.018NANANA342.704NANANA340.496NANANA338.411NANANA336.053NANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▇▇▆▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁714.317687.6660.398645.943616.941604.071622.042590.651562.103554.451543.623527.802495.656483.342476.836470.75444.4439.452438.972427.99334.398323.751324.766315.759298.398296.68297.509296.146280.126270.173255.694247.568230.067220.049216.804233.218215.626210.044201.64197.165178.513180.96181.91NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▃████▆▅▅▃▂▁▂▂▃▅▅▄▄▆▆▆▅▆▅▅▅▇▇▆▆▄▄▅▅▆▆▆▆▇▇▆▇-28.808-45.28-1.264-0.719-2.159-1.827-20.039-24.373-27.67-41.369-50.61-63.128-58.539-54.714-41.941-29.22-29.774-32.144-33.129-17.023-15.354-17.462-26.262-22.017-26.447-23.32-27.378-13.994-12.683-15.583-16.75-35.686-34.789-26.484-26.423-15.69-17.276-18.826-19.137-6.662-9.843-14.31-12.472NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity he:AmericanSavingsBankFSB▅▃████▆▅▅▃▂▁▁▂▃▄▄▄▄▆▆▅▅▅▅▅▅▅▆▅▅▄▄▅▅▆▆-13.809-30.80814.94612.29810.90511.185-8.662-13.732-17.541-31.816-38.068-51.747-47.006-43.024-31.129-18.998-19.415-21.638-22.473-8.796-6.868-9.634-17.271-11.795-16.022-12.715-16.558-9.864-8.415-11.173-12.197-23.815-22.646-14.067-15.396-6.773-8.082NA-9.371NANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▁▁▁▅▅▅▅████▅▅▅▅███▇-2.85-2.885-2.919-1.18-1.228-1.253-1.2790.1720.1460.1230.099-1.134-1.162-1.188-1.2190.1990.1770.137-0.322NANA1.9410.925NANA0.0670.045NANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompanyNANA-1.264NANANA-20.039NANANA-50.61NANANA-41.941NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues █▁2.8470.605NA1.3912.355-3.996NA2.2583.721.166-2.231.472.7520.658NA1.0892.123-2.63NA10.28311.2486.754NA0.692.02103.252NA25.822.0983.212NA14.21215.67110.216NA12.18114.54613.434NA3.71813.63615.702NA12.23912.13812.176
  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 ▂▁▄▄▄▂▆▇▂▂█▅▂▁▄▃▅▁▃▆75.85741.73117.139114.885136.0961.293171.042208.02256.23777.169241.633149.40873.59434.677129.298105.12139.03246.99186.358183.457NANANANANANANANANANANANANANANANANANANANA68.415-13.234NANA68.379.869
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▁▅▁▃▅▆▇▆▇▅▆▆▅▃█▅▆▆▆-253.412-518.02-269.015-515.377-368.793-260.463-168.275-98.304-192.152-82.978-250.298-150.341-160.369-231.051-374.94-40.917-214.961-184.481-200.721-150.758NANANANANANANANANANANANANANANANANANANANA-117.829-96.391NANA-66.434-113.783
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▇▆▅▆▇▃▃▄▄▄▄▄▅▃▁█▄▆▇█-64.857-68.498-84.607-79.096-64.66-116.431-113.379-97.759-95.289-102.097-104.624-105.212-85.822-109.524-143.0-51.028-106.899-71.36-62.163-45.845NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA-12.356NA-17.461-12.116-10.117NA-21.039-5.499-17.864NA-14.74-10.299-14.241NA-14.935NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA-17.411NA-63.977-13.836-97.439NA-69.604-86.925-86.499NA-73.11-66.649-83.63NA-68.028NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA-12.031NA-12.175-7.967-17.471NA-14.016-14.465-16.434NA-12.492-13.515-2.213NA-14.393NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany,srt:ReportableLegalEntitiesNANANA-0.0240.00.0NA0.00.00.0NA0.00.00.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidationItems he:EliminationsAndReconcilingItemsNA-26.7NA14.541-30.7418.596NA6.911.618.7NA-4.874.641-9.44NA5.436NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▆▅▂█▄▃▁▄▂▂▁▃▄▅▂▃▃▃▂143.97408.957295.84811.641600.145207.90147.93-131.279148.05723.0085.819-81.67896.655179.278305.35-72.41152.0893.268108.46-5.552NANANANANANANANANANANANANANANANANANANANA-0.09495.228NANA-65.644-57.976
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▄▆▁█▅▅▄▅▅▅▄-33.585-67.333143.972-388.851367.4428.73150.697-21.56112.14217.199-2.846-82.611NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▂▄▅▁█▄▅▅▅▂▆▃-30.615-0.07713.068-43.11350.061.4179.3879.14614.98-27.49628.653-13.636NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA4.684NA-0.231-0.06-2.354NA1.651-0.473-11.798NA-1.489NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA-16.938NA-40.56349.0552.503NA4.95214.127-13.738NA-10.055NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA12.177NA-2.2951.0651.268NA2.5431.326-1.96NA-2.092NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity,us-gaap:ConsolidationItems he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany,srt:ReportableLegalEntitiesNANANA-0.0240.00.0NA0.00.00.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:DeferredIncomeTaxExpenseBenefit ▂▂▃▃▁▂▁▃▂▂▁▄▂▂▄▃▃▃▄▃▃▃▅▁▃▄▃▄▄▃▄▄▄▄▃▅▄▄▄▄▄▄▄█▂▂-5.159-2.19612.7587.101-16.569-4.996-15.356.927-3.491-3.171-20.19120.495-6.783-2.88916.4384.356.95110.09616.4518.9298.7313.00838.71-20.2577.71515.26510.28420.64821.9546.29819.81920.17720.43619.9678.26641.04120.28121.2618.48721.90622.36416.68721.9778.202-2.252-0.129
 us-gaap:DeferredIncomeTaxExpenseBenefit dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▃▃▅▄▂▃▂▄▃▃▁▆▃▃▄▄▅▅▆▆▆▅▅▆▅▅▅▆▆▆▅▄▆▅▄█▆▆▅▅▆▅-7.2-4.67112.9786.41-12.475-3.762-14.8985.225-3.484-3.127-20.81721.178-6.763-1.588.55.93812.53511.06418.73823.5318.5613.55817.41524.89118.18815.13215.55522.00625.04220.34416.4939.23420.80517.9754.16140.19322.46320.06117.97117.66419.93513.521NANANANA
 us-gaap:IncreaseDecreaseInAccountsPayable dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▅▅▅▆▃▅▅▄▅▅▆▄▆▅▇▁▄█▄▄▅▆▄▆▄▃▄▄▃▄▅▆▁▇▃▄▇▃▆▄▅▃6.0436.2541.74513.335-41.056-7.1537.21-9.2160.882-0.92733.07-26.99613.1415.14348.575-74.478-12.53764.174-9.938-24.103-4.33927.766-14.1828.576-19.815-49.136-12.739-14.587-47.282-16.0242.14618.26-80.16838.934-35.432-9.41239.105-33.17423.711-11.238-6.165-42.123NANANANA
 us-gaap:IncreaseDecreaseInAccountsReceivable dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▇▄▆▅▃▆▄▅▇▂▅▇▇▆▄▅▄▆▄▆▆▃▃▇▆▂▁▆▆▄▄▄▅▂▆▇█▃▅▆▇▆19.05-6.07814.3623.654-19.759.02-6.619-4.34327.169-37.163-2.22219.07119.03115.037-11.0016.358-5.5997.328-9.20617.33711.615-28.297-28.19121.41912.149-29.104-46.47414.69213.843-8.804-7.368-9.8246.45-38.70310.09725.94935.959-25.0011.4389.65422.04111.271NANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▅▆▅▅▄▅▄▄▅▆▄▂▄▆▅▄▅▆▃▅▆▄▅▄█▃▇▆▄▆▃▄▅▄▁▅▆▆▁▇▄▇▅▅▄▄5.70534.0954.64620.423-2.59319.713-4.988-1.10415.3325.4860.06-38.243-9.19731.8923.24-11.6116.7827.142-16.73220.97223.377-4.4993.038-9.11366.972-19.82645.72330.806-10.33727.208-17.6832.86514.8212.776-53.1477.49631.91630.994-61.16442.352.36442.54410.79317.317-13.241.508
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▁▄▄▄▂▆▇▂▂█▅▂▁▄▃▅▁▃▆75.85741.73117.139114.885136.0961.293171.042208.02256.23777.169241.633149.40873.59434.677129.298105.12139.03246.99186.358183.457NANANANANANANANANANANANANANANANANANANANA68.415-13.234NANA68.379.869
 us-gaap:NetIncomeLoss dei:LegalEntity he:AmericanSavingsBankFSB█▁30.28429.556NANA14.01415.761NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▆▆▆█▆▃▆▆▅▄▅▇▄▄▄▆▄▃▅▆▅▄▅▆▅▄▄▅▅▅▄▅▄▄▁▅▄▄▄▅▃▃42.17143.62843.31160.33542.59924.17545.63147.04932.84432.39635.56749.98231.43927.74525.62547.75725.91421.73534.38947.24436.12725.63733.26343.27633.11127.14429.38239.14934.535.6932.2638.08728.96324.6994.49538.64529.64627.5726.08438.22917.29419.459NANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntities5.607NANANA7.179NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,he:MauiElectricCompanyLimited,srt:ReportableLegalEntities5.137NANANA6.597NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems he:HawaiianElectricCompanyAndSubsidiaries,srt:ParentCompany,srt:ReportableLegalEntities42.171NANANA42.599NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA6.692NA8.067.1796.067NA5.2694.6665.169NA9.1753.7636.101NA6.4343.632NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA43.628NA60.33542.59924.175NA47.04932.84432.396NA49.98231.43927.745NA47.75725.914NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA5.818NA6.8526.5972.737NA5.7793.426.68NA7.4615.3173.224NA6.3334.304NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ConsolidationItems he:EliminationsAndReconcilingItemsNA-12.51NA-14.912-13.776-8.804NA-11.048-8.086-11.849NA-16.636-9.08-9.325NA-12.767-7.936NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▄▄▃▄▃▂▄▄▃▃▃▄▃▃▂▄▃▂▃█▃▂▃▃▂▂▂▃▃▃▃▃▃▂▁▃▃▃▂▃▂▂▂▂▂▂64.34564.83150.95865.50349.3633.89366.73663.8942.98546.16150.04666.37146.52740.7232.84360.54439.13434.66645.107127.61344.60132.82542.79351.14435.49132.33933.6348.28641.89446.439.48648.70741.06134.15214.30948.17739.27338.78934.69848.87527.61228.93525.17132.9229.73527.599
us-gaap:ShareBasedCompensation ▆▆▁▃▅▄▄▅█▅▄▃▆▄▂▃▅▂▃▄▂▂▄▂▄▄▅▄▆▅2.8522.6020.3611.392.3551.7041.8442.2593.7212.1621.9011.4772.7571.6571.0211.0982.2291.0561.2081.570.9981.0131.7621.0112.0151.7542.0871.9942.8452.361NANANANANANANANANANANANANANANANA
  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 ▅▁▅▁▃▅▆▇▆▇▅▆▆▅▃█▅▆▆▆-253.412-518.02-269.015-515.377-368.793-260.463-168.275-98.304-192.152-82.978-250.298-150.341-160.369-231.051-374.94-40.917-214.961-184.481-200.721-150.758NANANANANANANANANANANANANANANANANANANANA-117.829-96.391NANA-66.434-113.783
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiaries▇▆▅▆▇▃▃▄▄▄▄▄▅▃▁█▄▆▇█-64.857-68.498-84.607-79.096-64.66-116.431-113.379-97.759-95.289-102.097-104.624-105.212-85.822-109.524-143.0-51.028-106.899-71.36-62.163-45.845NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiiElectricLightCompanyInc,srt:ReportableLegalEntitiesNA-12.356NA-17.461-12.116-10.117NA-21.039-5.499-17.864NA-14.74-10.299-14.241NA-14.935NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNA-17.411NA-63.977-13.836-97.439NA-69.604-86.925-86.499NA-73.11-66.649-83.63NA-68.028NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:MauiElectricCompanyLimited,srt:ReportableLegalEntitiesNA-12.031NA-12.175-7.967-17.471NA-14.016-14.465-16.434NA-12.492-13.515-2.213NA-14.393NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:ConsolidationItems he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany,srt:ReportableLegalEntitiesNANANA-0.0240.00.0NA0.00.00.0NA0.00.00.0NA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities us-gaap:ConsolidationItems he:EliminationsAndReconcilingItemsNA-26.7NA14.541-30.7418.596NA6.911.618.7NA-4.874.641-9.44NA5.436NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▃▃▄▄▃▅▅▄▅▅▆▆▅▆█▄▃▆▃▂▃▅▄▆▃▂▄▃▃▂▄▄▄▃▄▃▃▂▄▂▂▁▂▂▁▁74.33574.07987.72398.35672.262125.554125.247102.991108.858120.424132.385145.086126.546133.352180.78392.15884.061138.18570.83655.57675.813127.81887.618133.9583.22559.011103.71886.7583.42465.829106.48788.56287.78971.04199.51980.69879.96365.387.00959.01950.59738.49157.22548.24141.84334.816
  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 ▄▆▅▂█▄▃▁▄▂▂▁▃▄▅▂▃▃▃▂143.97408.957295.84811.641600.145207.90147.93-131.279148.05723.0085.819-81.67896.655179.278305.35-72.41152.0893.268108.46-5.552NANANANANANANANANANANANANANANANANANANANA-0.09495.228NANA-65.644-57.976
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▂▅▂▁▅▆▃▅▂▁▅▁▄▁█▁█▁▂▁▁▃▃▁▁▁▁▁▄▁▇▁▁▂▁▂29.687161.850.85113.204165.017186.92580.379152.8255.60.55150.00.0100.00.0267.3250.0265.00.040.00.00.075.080.00.00.00.00.00.0125.00.0236.00.00.050.00.040.0NANA0.00.0NANANANANANA
us-gaap:RepaymentsOfLongTermDebt NA50.6990.6781.046176.3360.90983.007151.78952.4890.052.020.989NANA200.00.0265.00.00.00.00.075.00.00.00.00.011.40.0100.00.0166.00.00.050.07.040.0271.057.50.0100.00.050.0NANANANA
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity he:HawaiiElectricLightCompanyIncNANANA0.0NANANA60.0NANANANANANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity he:HawaiianElectricCompanyAndSubsidiariesNANA0.00.0NANA82.0150.0NANA50.00.0NANA0.00.0NANA0.00.0NANANANANANANANANANA166.0NANANA0.040.0271.057.5NANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity,us-gaap:ConsolidationItems he:HawaiianElectricParent,srt:ReportableLegalEntitiesNANANA0.0NANANA90.0NANANANANANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:DebtInstrument,us-gaap:LongtermDebtType he:TermLoan299PercentDue2022,he:TermLoanNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ██▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▃▃▃▆▆▆▅▅▅▅▅▂▂▂▂▂▂▁▁▄▄▁▁▁▁▁▁37.15537.15636.0336.02936.01936.01834.87234.87134.8634.8633.75233.75433.7433.74133.72433.72333.71333.71333.65428.02927.87527.71633.31333.31233.31131.82931.78431.78231.45731.43524.79924.66324.52724.39424.23624.11523.99623.85529.74229.73923.73823.59323.44923.33923.19823.048
  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

Common Stock Value

us-gaap:CommonStockValue dei:LegalEntity

us-gaap:CommonStockValue

he:HawaiianElectricCompanyAndSubsidiaries


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value11511511511311311311311111111111110710710710710610610610610510510510510510510510510210210210297979797949494949291
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.80.80.80.80.80.80.80.80.90.80.80.80.80.80.80.90.90.90.90.90.90.90.90.90.91.01.01.01.00.91.00.91.01.01.01.01.01.01.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries1.81.81.81.81.81.81.81.81.81.81.91.81.91.91.71.71.81.81.81.81.81.91.91.91.91.91.92.02.02.02.01.91.91.91.91.92.02.02.02.20.0

Common Stock Par Or Stated Value Per Share

us-gaap:CommonStockParOrStatedValuePerShare dei:LegalEntity

us-gaap:CommonStockParOrStatedValuePerShare

he:HawaiianElectricCompanyAndSubsidiaries


Common
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value6.6676.676.676.6676.676.676.676.6676.676.676.676.6676.676.676.676.6676.676.676.676.6676.676.676.676.6676.676.676.676.6676.676.676.676.6676.676.676.676.6676.6676.667
Percentage of CommonStockParOrStatedValuePerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued dei:LegalEntity, us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-31
Value171717171717171616161616161616161616161515151515151515151515141413
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value109109109109109109108108108108108108108108108108108108108
Percentage of CommonStockSharesIssued631.0630.8630.2640.4640.4640.2639.2650.5650.5650.3650.0674.5674.5674.3673.9679.1679.1678.8677.8

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Common
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302009-12-312008-12-31
Value109108108108108108108108108108107107107107107102102101101101999998979797969695959594949290
Percentage of CommonStockSharesIssued630.2639.2650.0673.9679.1679.1678.8677.8686.5684.5682.5679.9679.9679.8679.6648.9664.7658.20.0656.30.00.00.0667.80.00.00.0674.70.00.00.0684.60.00.00.0

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
Value109109109109109109109109109108109108108108108108107107107103103101102999998979696969595939392
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
Value109109109109109108108108108108108108108108108107107107107103102101101999898979696959594939392
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
Value0.580.590.460.60.450.310.610.580.390.420.460.610.420.370.30.550.360.310.411.170.410.30.390.470.330.310.320.470.410.450.390.490.410.340.140.490.40.40.360.50.280.30.260.350.310.29
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
Value0.580.590.460.590.450.310.610.580.390.420.450.60.420.370.30.550.360.310.411.170.410.30.390.470.330.310.320.460.410.450.390.480.410.340.140.490.40.40.360.50.280.30.260.350.310.29
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2900000.02600000.0400000.01400000.02400000.01700000.01900000.02300000.03700000.02200000.01900000.01500000.02800000.01700000.01000000.01100000.02200000.01100000.01200000.01600000.01000000.01000000.01700000.01000000.02000000.01800000.02100000.02000000.02800000.02400000.01800000.02500000.01100000.01900000.01200000.01200000.01700000.01800000.01100000.01000000.0500000.01200000.0700000.0600000.0800000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense dei:LegalEntity

he:HawaiianElectricCompanyAndSubsidiaries


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value900000.01100000.0600000.00400000.0800000.0600000.0800000.01100000.0800000.0600000.0600000.0900000.0600000.0300000.0400000.0700000.0500000.0400000.0500000.0300000.0300000.0600000.0100000.0700000.0500000.0900000.0600000.0900000.0700000.0400000.0800000.0300000.0700000.0
Percentage of AllocatedShareBasedCompensationExpense31.042.3150.00.016.747.131.634.829.736.431.640.032.135.330.036.431.845.533.331.230.030.035.310.035.027.842.930.032.129.222.232.027.336.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value8020496648517066565462614227276041352812546413855313519464447574732333.10349403821513126
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity

he:AmericanSavingsBankFSB


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value47-16.19818131335332631273516166.885101818162.541316209.477179.544175.32311141523147.34155.741515157.41819
Percentage of ComprehensiveIncomeNetOfTax58.9-79.636.720.428.369.047.240.055.749.357.126.939.325.137.829.746.247.38.910.534.749.424.932.129.948.226.925.432.633.041.129.822.746.1185.031.538.341.234.035.561.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value414341604223434632323649312724472521324735263343322628383435333728243.05838292724381719
Percentage of ComprehensiveIncomeNetOfTax52.2213.382.790.487.246.362.270.258.058.558.881.173.9100.189.178.462.662.3113.837.675.964.188.978.1102.974.9144.283.677.375.257.879.988.972.798.578.073.070.9114.473.854.072.2
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Comprehensive
Period End2021-06-302020-06-30
Value5.6077.182
Percentage of ComprehensiveIncomeNetOfTax7.014.8
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Comprehensive
Period End2021-06-302020-06-30
Value5.1376.594
Percentage of ComprehensiveIncomeNetOfTax6.413.6
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Comprehensive
Period End2021-06-302020-06-30
Value4142
Percentage of ComprehensiveIncomeNetOfTax52.287.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Comprehensive
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value6.6938.0587.1826.0685.2694.6675.179.1753.7646.1016.4343.633
Percentage of ComprehensiveIncomeNetOfTax32.912.114.811.87.98.39.415.08.922.210.68.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Comprehensive
Period End2021-06-302020-06-30
Value-10.744-13.776
Percentage of ComprehensiveIncomeNetOfTax-13.4-28.4
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations0.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Comprehensive
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value436042234632324931274725
Percentage of ComprehensiveIncomeNetOfTax213.390.487.246.370.258.058.581.173.9100.178.462.6
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Comprehensive
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value5.8186.8556.5942.7375.7793.426.687.4615.3173.2246.3334.305
Percentage of ComprehensiveIncomeNetOfTax28.610.313.65.38.76.112.212.212.611.710.410.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ComprehensiveIncomeNetOfTax us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Comprehensive
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-12.511-14.913-13.776-8.805-11.048-8.087-11.85-16.636-9.081-9.325-12.767-7.938
Percentage of ComprehensiveIncomeNetOfTax-61.5-22.4-28.4-17.1-16.6-14.4-21.6-27.1-21.5-33.9-21.1-19.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value578544571541537617625674642583677669606573573563556523528540480482540620551568722775716695754741714713800776774739782791730647636621592558
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostsAndExpenses dei:LegalEntity

he:AmericanSavingsBankFSB


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value374162636660455460565253505052475048
Percentage of CostsAndExpenses6.57.710.811.712.39.87.38.09.49.87.77.98.38.89.28.49.09.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value534495502474466553575616578521619613552519516511501469476482424426487565492515666727668649704694669666
Percentage of CostsAndExpenses92.491.088.087.586.889.692.091.489.989.491.591.691.290.490.190.890.289.790.089.288.388.590.291.289.390.892.293.793.393.493.493.793.793.4
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostsAndExpenses dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Costs
Period End2021-06-302020-06-30
Value8166
Percentage of CostsAndExpenses14.212.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Costs
Period End2021-06-302020-06-30
Value7864
Percentage of CostsAndExpenses13.612.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Costs
Period End2021-06-302020-06-30
Value373335
Percentage of CostsAndExpenses64.662.3
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:CostsAndExpenses dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Costs
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value746966798481778581767172
Percentage of CostsAndExpenses13.612.812.512.812.512.613.212.713.413.412.713.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Costs
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value352333335392438409369438394367366356
Percentage of CostsAndExpenses64.661.662.363.665.063.763.465.565.064.065.064.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Costs
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value697064819487748977747271
Percentage of CostsAndExpenses12.813.012.013.213.913.612.813.412.813.112.912.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostsAndExpenses us-gaap:StatementBusinessSegments

he:BankingSegment


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value37416263666045546056525350505247504847505049454846434743434144424143464442424342424348474549
Percentage of CostsAndExpenses6.57.710.811.712.39.87.38.09.49.87.77.98.38.89.18.49.19.39.09.410.510.28.57.88.47.76.65.76.16.05.95.75.86.05.95.85.55.75.65.45.86.77.67.67.78.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value534495502474466553575616578521619613552519516511501469476482424426487565492515666727668649704694669666749726728692731745686600584571542505
Percentage of CostsAndExpenses92.491.088.087.586.889.692.091.489.989.491.591.691.290.490.190.890.289.790.089.288.388.590.291.289.390.892.293.793.393.493.493.793.793.493.693.694.093.793.594.193.992.791.891.991.790.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.7527.336.7194.6724.7543.6654.7663.454.3264.8135.5063.3793.3094.3954.5884.4224.0245.3315.1247.1915.5556.1377.186.322138.8339.064.6214.4534.0515.0264.7063.4884.0824.1914.7683.9594.3487.1293.6361.943.5724.3973.0873.516
Percentage of CostsAndExpenses1.21.31.20.90.90.60.80.50.70.80.80.50.50.80.80.80.71.01.01.31.21.31.31.02.41.61.30.60.60.60.70.60.50.60.50.60.50.60.90.50.30.60.70.50.6
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value8280617960398178525864775953709559517217970
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity

he:AmericanSavingsBankFSB


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value393717151718352921262826262422262424242220
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest48.246.329.318.928.847.843.237.140.445.144.634.744.546.032.728.141.646.834.212.728.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


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
Value53555474532956584041455740375474413454755840526852434562555752564638
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest65.068.789.393.688.074.868.873.877.572.170.874.367.769.777.578.868.867.375.442.282.30.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Income
Period End2021-06-302020-06-30
Value7.4089.508
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest8.915.8
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Income
Period End2021-06-302020-06-30
Value6.5588.54
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest7.914.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Income
Period End2021-06-302020-06-30
Value5048
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest61.180.9
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value8.877109.5087.9996.8226.047.073105.1658.412106.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest11.113.315.820.28.711.512.214.18.715.810.910.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Income
Period End2021-06-302020-06-30
Value-10.744-13.776
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-13.0-22.9
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations0.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value516948275538375437336635
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest63.988.080.968.369.972.964.970.562.163.270.360.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value7.4748.7938.543.3597.3084.4498.9568.6827.2324.403107.079
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest9.311.114.28.59.38.415.411.212.18.311.011.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-12.51-14.912-13.776-8.804-11.048-8.086-11.849-16.636-9.08-9.325-12.767-7.936
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-15.6-18.8-22.9-22.2-14.0-15.3-20.4-21.5-15.2-17.5-13.4-13.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:StatementBusinessSegments

he:BankingSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value393717151718352921262826262422262424242220
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest48.246.329.318.928.847.843.237.140.445.144.634.744.546.032.728.141.646.834.212.728.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value535554745329565840414557403754744134547558
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest65.068.789.393.688.074.868.873.877.572.170.874.367.769.777.578.868.867.375.442.282.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-10.946-11.996-11.406-9.904-10.131-8.959-9.805-8.563-9.415-9.982-9.942-6.952-7.276-8.373-7.193-6.615-6.173-7.3-6.94580-7.653
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-13.2-15.0-18.6-12.5-16.8-22.6-12.0-10.9-17.9-17.2-15.4-9.0-12.2-15.7-10.2-7.0-10.4-14.2-9.645.1-10.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value18151014105.80315149.709111410131237342016275126182229201918262224192223186.9332522211827131616201615
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 InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity

he:AmericanSavingsBankFSB


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value9.7087.5462.2832.8773.323.2087.1936.2694.2765.3236.9665.615.9535.546.1379.1728.0638.3478.597.6236.9396.9217.77.3516.8757.1565.3586.3125.3727.0855.617.5328.7867.5977.6947.4197.6847.5877.4977.7098.611
Percentage of IncomeTaxExpenseBenefit52.249.122.320.530.555.347.242.344.044.848.651.645.644.116.426.539.349.331.214.826.437.834.024.932.935.829.024.024.128.729.233.037.140.7111.028.833.735.641.127.662.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


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
Value11111113105.28210107.7449.2349.7837.1448.6769.1752827141220282114192519151623202119181713
Percentage of IncomeTaxExpenseBenefit61.873.1108.698.793.891.068.973.179.877.768.365.866.573.176.478.172.575.473.254.683.679.584.386.091.479.386.987.591.686.1103.879.973.373.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Income
Period End2021-06-302020-06-30
Value1.6682.196
Percentage of IncomeTaxExpenseBenefit9.020.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Income
Period End2021-06-302020-06-30
Value1.3251.847
Percentage of IncomeTaxExpenseBenefit7.117.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Income
Period End2021-06-302020-06-30
Value8.5056.156
Percentage of IncomeTaxExpenseBenefit45.756.6
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value2.0512.3782.1961.7981.421.2411.771.5711.2692.1773.8152.235
Percentage of IncomeTaxExpenseBenefit13.317.020.231.09.612.814.914.59.717.311.010.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value7.6219.6116.1562.9577.9685.575.2834.4475.5885.914199.946
Percentage of IncomeTaxExpenseBenefit49.668.656.651.053.857.444.540.942.847.155.448.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Income
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value1.5611.8461.8470.5271.4340.9332.1811.1261.8191.0844.0372.679
Percentage of IncomeTaxExpenseBenefit10.213.217.09.19.79.618.410.413.98.611.713.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

he:BankingSegment


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
Value9.7087.5462.2832.8773.323.2087.1936.2694.2765.3236.9665.615.9535.546.1379.1728.0638.3478.597.6236.9396.9217.77.3516.8757.1565.3586.3125.3727.0855.617.5328.7867.5977.6947.4197.6847.5877.4977.7098.6117.8767.3749.0669.616
Percentage of IncomeTaxExpenseBenefit52.249.122.320.530.555.347.242.344.044.848.651.645.644.116.426.539.349.331.214.826.437.834.024.932.935.829.024.024.128.729.233.037.140.7111.028.833.735.641.127.662.749.045.744.560.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


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
Value11111113105.28210107.7449.2349.7837.1448.6769.17528271412202821141925191516232021171918142.61922181715231111101410
Percentage of IncomeTaxExpenseBenefit61.873.1108.698.793.891.068.973.179.877.768.365.866.573.176.478.172.575.473.254.683.679.584.386.091.479.386.987.591.686.190.483.477.577.137.886.881.681.783.085.380.672.168.072.263.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


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
Value-2.607-3.414-3.166-2.694-2.649-2.687-2.451-2.288-2.311-2.679-2.425-1.892-1.574-2.1592.677-1.582-2.431-4.189-1.21715-2.613-3.173-4.156-3.225-5.075-3.027-2.95-3.031-3.5-3.659-3.766-3.749-3.457-3.329-3.38-4.01-3.486-3.697-4.403-3.602-5.949-3.391-2.204-3.4-3.816
Percentage of IncomeTaxExpenseBenefit-14.0-22.2-31.0-19.2-24.4-46.3-16.1-15.5-23.8-22.6-16.9-17.4-12.1-17.27.2-4.6-11.9-24.8-4.430.7-9.9-17.3-18.4-10.9-24.3-15.2-16.0-11.5-15.7-14.8-19.6-16.4-14.6-17.8-48.8-15.5-15.3-17.4-24.1-12.9-43.3-21.1-13.7-16.7-23.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value9.0230.00.01.09.0424.02214333.02311174.0365.0131.01327341.0169.040-18.0161.04.0-3.0-14.0-6.0-3.02.09.0-30.0-38.00.0
Percentage of IncomeTaxesPaid100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxesPaid dei:LegalEntity

he:HawaiianElectricCompanyAndSubsidiaries


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value12290.00.00.09.0415.01712305.0171.06.02.01.00.00.00.00.04.00.00.014-8.0320.00.0-26.0-5.0-1.04.0-1.0
Percentage of IncomeTaxesPaid133.3126.10.00.00.0100.097.6125.077.385.790.9166.773.99.135.350.02.80.00.00.00.014.80.00.035.044.4200.00.00.0866.735.716.70.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest And Fee Income Loans And Leases

us-gaap:InterestAndFeeIncomeLoansAndLeases dei:LegalEntity

us-gaap:InterestAndFeeIncomeLoansAndLeases

he:AmericanSavingsBankFSB


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value5149525253555759585757555452515252505150494847464645464543434343434242434444464645
Percentage of InterestAndFeeIncomeLoansAndLeases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense dei:LegalEntity

us-gaap:InterestExpense

he:AmericanSavingsBankFSB


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1.3041.4891.722.3483.1463.94.1564.8064.6984.784.374.0393.6773.4533.1882.9143.1352.9193.1853.3353.1583.0772.9772.872.7532.7262.7712.752.6572.632.6592.4682.4742.4762.6012.7412.913.043.1993.5413.769
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet dei:LegalEntity

us-gaap:InterestIncomeExpenseNet

he:AmericanSavingsBankFSB


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value6057585756616062616363615958575655545251505048474645464544444443444343444445464645
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss dei:LegalEntity

us-gaap:NetIncomeLoss

he:AmericanSavingsBankFSB


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value30291415
Percentage of NetIncomeLoss100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value424343604224454732323549312725472521344736253343332729393435323828244.49538292726381719
Percentage of NetIncomeLoss139.3147.60.00.0304.0153.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Net
Period End2021-06-302020-06-30
Value5.6077.179
Percentage of NetIncomeLoss18.551.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Net
Period End2021-06-302020-06-30
Value5.1376.597
Percentage of NetIncomeLoss17.047.1
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Net
Period End2021-06-302020-06-30
Value4242
Percentage of NetIncomeLoss139.3304.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:NetIncomeLoss dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value6.6928.067.1796.0675.2694.6665.1699.1753.7636.1016.4343.632
Percentage of NetIncomeLoss22.60.051.238.50.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Net
Period End2021-06-302020-06-30
Value-10.744-13.776
Percentage of NetIncomeLoss-35.5-98.3
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations0.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value436042244732324931274725
Percentage of NetIncomeLoss147.60.0304.0153.40.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value5.8186.8526.5972.7375.7793.426.687.4615.3173.2246.3334.304
Percentage of NetIncomeLoss19.70.047.117.40.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-12.51-14.912-13.776-8.804-11.048-8.086-11.849-16.636-9.08-9.325-12.767-7.936
Percentage of NetIncomeLoss-42.30.0-98.3-55.90.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


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
Value636450654833666342454965464032603834441274432425035313347414539484033134738383448272824322927
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic dei:LegalEntity

he:HawaiianElectricCompanyAndSubsidiaries


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value414343604223454632323549312725472521344635253243322629383435313728244.22538292725371719
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic65.667.485.392.486.671.568.573.876.670.371.275.467.768.378.379.066.362.876.436.981.378.478.084.993.884.387.881.382.677.182.078.470.772.530.580.475.771.275.478.462.767.4
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Net
Period End2021-06-302020-06-30
Value5.6077.179
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic8.814.7
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Net
Period End2021-06-302020-06-30
Value5.1376.597
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic8.013.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Net
Period End2021-06-302020-06-30
Value4142
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic65.686.6
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value6.6928.067.1796.0675.2694.6665.1699.1753.7636.1016.4343.632
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic10.412.414.718.28.311.011.313.98.215.210.79.4
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Net
Period End2021-06-302020-06-30
Value-10.744-13.776
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic-16.8-28.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations0.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value436042234632324931274725
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic67.492.486.671.573.876.670.375.467.768.379.066.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value5.8186.8526.5972.7375.7793.426.687.4615.3173.2246.3334.304
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic9.010.513.58.29.18.014.611.311.58.010.511.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic dei:LegalEntity, us-gaap:StatementEquityComponents

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value4143604223463232354931272547252134463525324332262938
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic65.667.492.486.671.573.876.670.371.275.467.768.378.379.066.362.876.436.981.378.478.084.993.884.387.881.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Net
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-12.51-14.912-13.776-8.804-11.048-8.086-11.849-16.636-9.08-9.325-12.767-7.936
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic-19.4-22.9-28.2-26.3-17.4-19.0-25.9-25.2-19.7-23.2-21.3-20.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementBusinessSegments

he:BankingSegment


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
Value3029151214152822172021212018161716151615131214131213121311141215151414141415151515131315
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic47.445.931.018.728.747.242.636.140.045.643.932.244.647.152.129.343.346.236.311.930.139.235.326.536.742.336.227.728.231.731.231.739.242.0103.829.836.641.444.831.956.048.753.847.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


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
Value414343604223454632323549312725472521344635253243322629383435313728244.225382927253717191821
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic65.667.485.392.486.671.568.573.876.670.371.275.467.768.378.379.066.362.876.436.981.378.478.084.993.884.387.881.382.677.182.078.470.772.530.580.475.771.275.478.462.767.476.667.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


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-8.313-8.556-8.214-7.183-7.456-6.246-7.328-6.248-7.078-7.277-7.491-5.033-5.676-6.188-9.844-5.006-3.716-3.085-5.70265-5.014-5.688-5.626-5.784-10.674-8.483-7.972-4.324-4.485-4.032-5.161-4.857-4.024-4.905-4.752-4.877-4.765-4.861-6.929-5.012-5.08-4.578-7.513-4.824
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic-13.0-13.3-16.3-11.0-15.3-18.7-11.1-9.9-16.6-15.9-15.1-7.6-12.3-15.4-30.4-8.3-9.6-9.0-12.851.2-11.4-17.6-13.3-11.4-30.5-26.6-24.0-9.0-10.8-8.8-13.2-10.1-9.9-14.6-34.3-10.2-12.3-12.7-20.2-10.4-18.7-16.1-30.4-14.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value636465483363424549654640326038344412744324250353133474145394840331347383834482728
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value101988099715910097727784987871841097567881058568839772696791828872908270379179756894636359726360
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 InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss dei:LegalEntity

he:AmericanSavingsBankFSB


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value393518158.49319352821262927262422262424
Percentage of OperatingIncomeLoss39.136.022.815.611.932.534.929.829.333.534.527.834.234.626.324.632.935.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value6769688867437071555661745551668755486889705567826657587670705971615219746157
Percentage of OperatingIncomeLoss66.570.584.688.994.873.669.873.876.772.672.275.570.071.578.279.572.572.177.685.282.780.481.385.191.082.987.683.685.280.082.379.874.274.952.281.677.475.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Operating
Period End2021-06-302020-06-30
Value9.62411
Percentage of OperatingIncomeLoss9.416.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Operating
Period End2021-06-302020-06-30
Value8.76710
Percentage of OperatingIncomeLoss8.615.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Operating
Period End2021-06-302020-06-30
Value4945
Percentage of OperatingIncomeLoss48.463.7
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:OperatingIncomeLoss dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value111211109.1278.7569.892137.99111138.722
Percentage of OperatingIncomeLoss11.312.716.217.09.412.112.714.210.115.611.911.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value486545285340354937336238
Percentage of OperatingIncomeLoss49.365.363.747.855.156.046.050.347.847.057.450.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value9.67410105.5089.2246.43110109.5196.398129.633
Percentage of OperatingIncomeLoss9.911.015.09.29.58.913.911.012.18.911.512.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Operating
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-0.02-0.11-0.14-0.215-0.205-0.202-0.032-0.055-0.059-0.042-0.03-0.014
Percentage of OperatingIncomeLoss-0.0-0.1-0.2-0.4-0.2-0.3-0.0-0.1-0.1-0.1-0.0-0.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

he:BankingSegment


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
Value393518158.4931935282126292726242226242424222019222019201719172117222421222121222223232120242521
Percentage of OperatingIncomeLoss39.136.022.815.611.932.534.929.829.333.534.527.834.234.627.124.432.735.628.121.623.728.527.221.427.129.725.821.520.724.524.625.330.030.859.123.627.530.233.524.537.434.334.933.640.535.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


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
Value67696888674370715556617455516687554868897055678266575876707059716152197461575274424543514142
Percentage of OperatingIncomeLoss66.570.584.688.994.873.669.873.876.772.672.275.570.071.578.279.572.572.177.685.282.780.481.385.191.082.987.683.685.280.082.379.874.274.952.281.677.475.576.979.366.871.372.670.765.170.2
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


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
Value-5.634-6.379-6.012-4.457-4.738-3.659-4.763-3.446-4.312-4.745-5.675-3.236-3.262-4.367-4.468-4.295-3.947-5.236-5.024-7.097-5.455-6.069-7.093-6.364-13.157-8.761-9.013-4.626-4.841-3.983-4.981-4.65-3.473-4.047-4.196-4.739-3.964-4.35-7.14-3.635-2.677-3.587-4.412-3.101-3.579
Percentage of OperatingIncomeLoss-5.5-6.5-7.5-4.5-6.6-6.1-4.7-3.5-5.9-6.1-6.7-3.3-4.1-6.1-5.3-3.9-5.2-7.7-5.7-6.7-6.4-8.8-8.5-6.6-18.1-12.6-13.4-5.1-5.9-4.5-6.9-5.2-4.2-5.7-11.3-5.2-5.0-5.7-10.5-3.8-4.2-5.7-7.4-4.3-5.6
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value646450654933666342465066464032603934451274432425135323348414639484134144839383448272825322927
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 InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss dei:LegalEntity

he:AmericanSavingsBankFSB


Profit
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value12141522172021212018161716151615131214131213121311141215151414141415151515
Percentage of ProfitLoss18.528.446.535.839.645.143.532.044.246.651.329.142.845.636.011.829.838.634.926.336.241.735.727.527.931.330.931.438.841.4100.429.536.140.944.231.655.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value424343604224454733323550312725472621344736253343332729393435323829244.72438292726381719
Percentage of ProfitLoss65.967.685.492.586.872.068.774.076.970.771.575.768.168.778.779.366.863.476.737.281.578.878.385.193.984.688.081.582.977.482.378.771.173.033.080.776.171.775.878.763.568.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Profit
Period End2021-06-302020-06-30
Value5.747.312
Percentage of ProfitLoss8.914.8
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Profit
Period End2021-06-302020-06-30
Value5.2336.693
Percentage of ProfitLoss8.113.6
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Profit
Period End2021-06-302020-06-30
Value4242
Percentage of ProfitLoss65.586.3
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:ProfitLoss dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Profit
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value6.8268.1937.3126.2015.4024.7995.3039.3083.8966.2356.5673.765
Percentage of ProfitLoss10.512.514.818.38.511.211.514.08.415.310.89.6
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Profit
Period End2021-06-302020-06-30
Value-10.744-13.776
Percentage of ProfitLoss-16.7-27.9
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations0.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Profit
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value436042244732324931274725
Percentage of ProfitLoss67.392.186.371.373.676.470.275.367.668.178.966.2
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Profit
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value5.9136.9476.6932.8325.8743.5166.7757.5565.4133.3196.4284.4
Percentage of ProfitLoss9.110.613.68.49.28.214.711.411.68.210.611.2
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss dei:LegalEntity, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Profit
Period End2021-06-302020-06-30
Value-0.035-0.025
Percentage of ProfitLoss-0.1-0.1
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.0

us-gaap:ProfitLoss dei:LegalEntity, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssets


Profit
Period End2021-06-302020-06-30
Value5.8115.159
Percentage of ProfitLoss9.010.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssets0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit


Profit
Period End2021-06-302020-06-30
Value-5.846-5.184
Percentage of ProfitLoss-9.1-10.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit0.00.0

us-gaap:ProfitLoss us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Profit
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-12.51-14.912-13.776-8.804-11.048-8.086-11.849-16.636-9.08-9.325-12.767-7.936
Percentage of ProfitLoss-19.3-22.8-27.9-26.0-17.3-18.8-25.7-25.1-19.5-22.9-21.1-20.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Profit
Period End2021-06-302020-06-30
Value-0.1971.107
Percentage of ProfitLoss-0.32.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.0

us-gaap:ProfitLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssets


Profit
Period End2021-06-302020-06-30
Value5.8115.159
Percentage of ProfitLoss9.010.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome he:AccumulatedDefinedBenefitPlansAdjustmentImpactOfDecisionAndOrdersOfThePublicUtilityCommissionIncludedInRegulatoryAssets0.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit


Profit
Period End2021-06-302020-06-30
Value-6.008-5.69
Percentage of ProfitLoss-9.3-11.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCredit0.00.0

us-gaap:ProfitLoss us-gaap:StatementBusinessSegments

he:BankingSegment


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
Value302915121415282217202121201816171615161513121413121312131114121515141414141515151513131516
Percentage of ProfitLoss47.145.630.718.528.446.542.335.839.645.143.532.044.246.651.329.142.845.636.011.829.838.634.926.336.241.735.727.527.931.330.931.438.841.4100.429.536.140.944.231.655.047.952.846.554.2
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


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
Value424343604224454733323550312725472621344736253343332729393435323829244.72438292726381719192218
Percentage of ProfitLoss65.967.685.492.586.872.068.774.076.970.771.575.768.168.778.779.366.863.476.737.281.578.878.385.193.984.688.081.582.977.482.378.771.173.033.080.776.171.775.878.763.568.077.168.361.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


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
Value-8.339-8.582-8.24-7.21-7.482-6.272-7.354-6.275-7.104-7.303-7.517-5.06-5.702-6.214-9.87-5.033-3.742-3.111-5.72865-5.04-5.714-5.652-5.811-10.7-8.509-7.998-4.351-4.511-4.058-5.187-4.884-4.05-4.931-4.778-4.904-4.791-4.887-6.955-5.039-5.106-4.604-7.539-4.851-4.537
Percentage of ProfitLoss-13.0-13.2-16.2-11.0-15.2-18.5-11.0-9.8-16.5-15.8-15.0-7.6-12.3-15.3-30.1-8.3-9.6-9.0-12.751.0-11.3-17.4-13.2-11.4-30.1-26.3-23.8-9.0-10.8-8.7-13.1-10.0-9.9-14.4-33.4-10.2-12.2-12.6-20.0-10.3-18.5-15.9-30.0-14.7-15.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value680642652641608677725771715661761768685645658673632591617646566550624717623637790867798783826831796784838867854814851886794710695694655619
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Including Assessed Tax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value604541652550532618725725660577761710621575658673632591617646566550624717623637790867798783826831796784838867854814851886794710695694655619
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax dei:LegalEntity, us-gaap:ProductOrService

he:AmericanSavingsBankFSB, he:BankOwnedLifeInsuranceIncome


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.6242.5612.0511.9651.6730.7941.3781.662.392.2590.392.6631.1330.8711.3741.2571.925
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.30.50.30.40.30.10.20.20.40.40.10.40.20.20.20.20.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB he:BankOwnedLifeInsuranceIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:AmericanSavingsBankFSB, he:GainLossOnSaleOfInvestmentsNet


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302018-09-30
Value0.00.5280.09.2750.6530.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.10.01.70.10.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB he:GainLossOnSaleOfInvestmentsNet0.00.00.00.00.00.00.0

he:AmericanSavingsBankFSB, he:OtherIncomeNet


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0760.272-0.187-0.231-0.2510.4130.6540.4280.5340.4580.4920.7360.5360.4360.3880.380.391
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.1-0.0-0.0-0.00.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB he:OtherIncomeNet0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:AmericanSavingsBankFSB, us-gaap:DepositAccount


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.9043.8634.2173.8322.8975.1135.4755.325.0045.0785.535.4545.1385.1895.6785.5335.565
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.60.70.60.70.50.80.80.70.80.90.70.80.80.90.90.80.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB us-gaap:DepositAccount0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:AmericanSavingsBankFSB, us-gaap:FinancialService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.4645.0734.5414.2333.1024.5714.835.0854.7984.5624.9964.5434.7444.6545.7415.6355.81
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.90.90.70.80.60.70.70.70.70.80.70.60.80.80.90.80.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB us-gaap:FinancialService0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:AmericanSavingsBankFSB, us-gaap:FinancialServiceOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2.2012.4421.7731.5241.2121.8721.3781.7061.831.5931.9771.7461.6751.6541.4641.9041.971
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.40.50.30.30.20.30.20.20.30.30.30.20.30.30.20.30.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB us-gaap:FinancialServiceOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:AmericanSavingsBankFSB, us-gaap:MortgageBanking


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.9254.37.8017.6816.2522.01.8631.490.9760.6140.0940.1690.6170.6130.3050.520.587
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.30.81.21.41.20.30.30.20.10.10.00.00.10.10.00.10.1
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB us-gaap:MortgageBanking0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService

he:BankFees


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1111109.5897.211111112111112111111
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.92.11.61.71.41.91.61.71.81.91.61.71.92.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankFees0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesCommercial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value192168175171159197211230217187229229206188
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax31.831.126.931.130.031.929.131.832.932.530.132.333.232.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesCommercial0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesLargeLightAndPower


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value201176182176176216226248231198245242214192
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax33.332.728.032.033.135.031.134.335.134.532.234.134.533.4
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesLargeLightAndPower0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.2122.4790.8821.9351.7793.4584.3634.0813.7744.0787.2993.4643.2174.06
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.40.50.10.40.30.60.60.60.60.71.00.50.50.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesResidential


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value196181197191187190205230195175215222185178
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax32.533.530.334.835.230.828.431.729.730.428.331.329.831.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesResidential0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:OtherSales


Revenue
Period End2021-06-302021-03-31
Value1.0890.924
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:OtherSales0.00.0

he:SolarEnergySales


Revenue
Period End2020-12-312020-09-30
Value0.6810.211
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.10.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:SolarEnergySales0.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

he:BankFees, he:BankingSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1111109.5897.211111112111112111111
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.92.11.61.71.41.91.61.71.81.91.61.71.92.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankFees he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesCommercial, he:ElectricUtilitySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value192168175171159197211230217187229229206188
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax31.831.126.931.130.031.929.131.832.932.530.132.333.232.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesCommercial he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesLargeLightAndPower, he:ElectricUtilitySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value201176182176176216226248231198245242214192
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax33.332.728.032.033.135.031.134.335.134.532.234.134.533.4
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesLargeLightAndPower he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesOther, he:ElectricUtilitySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.2122.4790.8821.9351.7793.4584.3634.0813.7744.0787.2993.4643.2174.06
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.40.50.10.40.30.60.60.60.60.71.00.50.50.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesOther he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricEnergySalesResidential, he:ElectricUtilitySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value196181197191187190205230195175215222185178
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax32.533.530.334.835.230.828.431.729.730.428.331.329.831.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricEnergySalesResidential he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:OtherSales, us-gaap:AllOtherSegments


Revenue
Period End2021-06-302021-03-31
Value1.0890.924
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.2
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:OtherSales us-gaap:AllOtherSegments0.00.0

he:SolarEnergySales, us-gaap:AllOtherSegments


Revenue
Period End2020-12-312020-09-30
Value0.6810.211
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.10.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:SolarEnergySales us-gaap:AllOtherSegments0.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:StatementBusinessSegments

he:BankingSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1111109.5897.2111111121111121111117574757272737068686965646463606362656664686664656666666568717170
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.92.11.61.71.41.91.61.71.81.91.61.71.92.011.411.011.912.311.811.412.512.511.09.610.510.18.27.37.68.17.57.88.38.38.27.77.68.07.87.58.39.29.910.310.911.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value592528556540525607647713648566695698610563583598556518544572495482555648558573725803738720764766730719769801789749784820728645627623584548
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax97.997.785.398.298.698.189.298.398.298.191.398.398.198.088.688.988.187.788.288.687.587.589.090.489.589.991.892.792.591.992.592.291.791.791.892.392.492.092.292.591.790.890.189.789.188.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.0890.9240.6810.2110.00.00.00.00.00.00.00.00.00.00.120.1270.0770.0950.10.0940.10.0680.087-0.042-0.0340.0720.047-0.005-0.3880.0680.0450.0560.0150.035-0.0050.029-0.005-0.002-0.0110.001-0.737-0.015-0.015-0.014-0.063
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.20.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.0-0.0-0.00.00.00.00.00.0-0.00.0-0.0-0.0-0.00.0-0.1-0.0-0.0-0.0-0.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:StatementBusinessSegments, us-gaap:TimingOfTransferOfGoodOrService

he:BankingSegment, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1111109.5897.211111112111112111111
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.92.11.61.71.41.91.61.71.81.91.61.71.92.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment us-gaap:TransferredAtPointInTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value592528556540525607647713648566697697609563
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax97.997.785.398.298.698.189.298.398.298.191.698.298.098.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.0890.9240.6810.2110.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.20.20.10.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:TimingOfTransferOfGoodOrService

us-gaap:TransferredAtPointInTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1111109.5897.211111112111110121211
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.92.11.61.71.41.91.61.71.81.91.31.82.02.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:TransferredAtPointInTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value593529556540525607647713648566697697609563
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax98.197.985.498.398.698.189.298.398.298.191.698.298.098.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value680642652641608677725771715661761768685645658673632591617646566550624717623637790867798783826831796784838867854814851886794710695694655619
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues dei:LegalEntity

he:AmericanSavingsBankFSB


Revenuesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value777780787479818281838180777575747572
Percentage of Revenues11.412.012.312.312.311.811.210.711.412.610.710.511.311.711.411.011.912.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:AmericanSavingsBankFSB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries


Revenuesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value601564571562534597645688633578680687608570583598556518544572495482555648558573725803738720764766730719769801789749
Percentage of Revenues88.587.987.687.787.788.288.989.288.687.489.489.588.788.388.688.988.187.788.288.687.587.589.090.489.589.991.892.792.591.992.592.291.791.791.892.392.492.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Revenuesdei:
Period End2021-06-302020-06-30
Value9178
Percentage of Revenues13.512.9
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Revenuesdei:
Period End2021-06-302020-06-30
Value8775
Percentage of Revenues12.912.4
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Revenuesdei:
Period End2021-06-302020-06-30
Value422380
Percentage of Revenues62.162.5
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities0.00.0

us-gaap:Revenues dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Revenuesdei:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value858278899389879889878481
Percentage of Revenues13.212.812.913.212.112.613.212.913.113.612.512.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Revenuesdei:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value400398380421491450405488431401429394
Percentage of Revenues62.362.262.562.263.762.961.363.663.062.163.862.4
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:HawaiianElectricParent srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Revenuesdei:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value79817587103948510086818580
Percentage of Revenues12.312.712.412.913.413.112.913.112.712.612.712.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:MauiElectricCompanyLimited srt:ReportableLegalEntities0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value-0.02-0.11-0.14-0.215-0.205-0.202-0.032-0.055-0.059-0.042-0.03-0.014
Percentage of Revenues-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:EliminationsAndReconcilingItems0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value680642641608677770715661761768685645658673632591617646566550624717623637790867798783832829794782
Percentage of Revenues100.0100.0100.0100.0100.099.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.799.899.799.8
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IntersegmentElimination, he:ElectricUtilitySegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.010.0090.0090.0090.0090.0120.020.0310.0130.0130.0130.0130.0140.0130.0140.0130.0390.0450.0460.0450.0460.0070.0070.0060.0070.0110.0060.0060.0060.0060.0150.0060.0060.006
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:IntersegmentElimination he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IntersegmentElimination, us-gaap:AllOtherSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-0.01-0.009-0.009-0.009-0.009-0.012-0.02-0.031-0.013-0.013-0.013-0.013-0.014-0.013-0.014-0.013-0.039-0.045-0.046-0.045-0.046-0.007-0.007-0.006-0.007-0.011-0.006-0.006-0.006-0.006-0.015-0.006-0.006-0.006
Percentage of Revenues-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:IntersegmentElimination us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, he:BankingSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value77778078747981828183818077757574757272737068686965646463606362656664
Percentage of Revenues11.412.012.312.312.311.811.210.711.412.610.710.511.311.711.411.011.912.311.811.412.512.511.09.610.510.18.27.37.68.17.57.88.38.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, he:ElectricUtilitySegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value601564571562534597645688633578680687608570583598556518544572495482555648558573725803738720770764728717
Percentage of Revenues88.587.987.687.787.788.288.989.288.687.489.489.588.788.388.688.988.187.788.288.687.587.589.090.489.589.991.892.792.591.993.291.991.491.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.1280.960.7160.2240.0250.0180.0230.0350.0270.081-0.1560.1560.0610.0410.1340.140.1160.140.1460.1390.1460.0750.094-0.036-0.0270.0830.0530.001-0.3820.0740.060.0620.0210.041
Percentage of Revenues0.20.10.10.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.00.0-0.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService

he:BankInterestAndDividendIncome


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5859596466666867656362
Percentage of Revenues9.19.39.89.68.79.210.48.98.59.29.6
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankInterestAndDividendIncome0.00.00.00.00.00.00.00.00.00.00.0

he:OtherBankNoninterestIncome


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.1339.4157.6743.2074.2313.93.3310.9763.5682.2861.92
Percentage of Revenues1.11.51.30.50.50.50.50.10.50.30.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:OtherBankNoninterestIncome0.00.00.00.00.00.00.00.00.00.00.0

he:OtherRevenueSources


Revenuesus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.4645.9596.5035.6955.7037.0646.1345.3696.1999.5082.6992.7861.737
Percentage of Revenues1.20.91.00.90.81.00.80.80.91.20.40.40.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:OtherRevenueSources0.00.00.00.00.00.00.00.00.00.00.00.00.0

he:RegulatoryRevenue


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28152.826-15.304-30.8-20.366.207-24.222-13.572-4.6434.75
Percentage of Revenues4.42.40.5-2.3-4.0-2.80.9-3.2-1.8-0.70.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:RegulatoryRevenue0.00.00.00.00.00.00.00.00.00.00.0

he:RevenuesFromOtherSources


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10191765846558454576370
Percentage of Revenues15.814.212.58.76.07.712.77.17.59.310.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:RevenuesFromOtherSources0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

he:BankInterestAndDividendIncome, he:BankingSegment


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5859596466666867656362
Percentage of Revenues9.19.39.89.68.79.210.48.98.59.29.6
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankInterestAndDividendIncome he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.0

he:OtherBankNoninterestIncome, he:BankingSegment


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.1339.4157.6743.2074.2313.93.3310.9763.5682.2861.92
Percentage of Revenues1.11.51.30.50.50.50.50.10.50.30.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:OtherBankNoninterestIncome he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.0

he:OtherRevenueSources, he:ElectricUtilitySegment


Revenuesus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.4375.9336.4995.6795.6977.0616.135.3556.1319.6772.5562.7391.709
Percentage of Revenues1.20.91.00.90.81.00.80.70.91.30.30.40.3
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:OtherRevenueSources he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

he:OtherRevenueSources, us-gaap:AllOtherSegments


Revenuesus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0270.0260.0040.0160.0060.0030.0040.0140.068-0.1690.1430.0470.028
Percentage of Revenues0.00.00.00.00.00.00.00.00.0-0.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:OtherRevenueSources us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.0

he:RegulatoryRevenue, he:ElectricUtilitySegment


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value28152.826-15.304-30.8-20.366.207-24.222-13.572-4.6434.75
Percentage of Revenues4.42.40.5-2.3-4.0-2.80.9-3.2-1.8-0.70.7
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:RegulatoryRevenue he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.0

he:RevenuesFromOtherSources, he:BankingSegment


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6569676871707168686563
Percentage of Revenues10.210.811.110.19.29.810.99.09.09.69.9
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:RevenuesFromOtherSources he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.0

he:RevenuesFromOtherSources, he:ElectricUtilitySegment


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value35218.505-9.607-24.67-15.00512-14.545-11.016-1.9046.459
Percentage of Revenues5.63.41.4-1.4-3.2-2.11.9-1.9-1.4-0.31.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:RevenuesFromOtherSources he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.0

he:RevenuesFromOtherSources, us-gaap:AllOtherSegments


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0270.0040.0160.0060.0040.0140.068-0.1690.1430.0470.028
Percentage of Revenues0.00.00.00.00.00.00.0-0.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:RevenuesFromOtherSources us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementBusinessSegments, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, he:BankingSegment, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Revenuesus-gaap:
Period End2021-03-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-30
Value0.3870.01.6380.00.4780.00.00.00.00.00.00.0
Percentage of Revenues0.10.00.30.00.10.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome he:BankingSegment us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

he:BankingSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value77778078747980838183818077757574757272737068686965646463606362656664686664656666666568717170
Percentage of Revenues11.412.012.312.312.311.811.110.811.412.610.710.511.311.711.411.011.912.311.811.412.512.511.09.610.510.18.27.37.68.17.57.88.38.38.27.77.68.07.87.58.39.29.910.310.911.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:BankingSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:ElectricUtilitySegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value601564571562534597645688633578680687608570583598556518544572495482555648558573725803738720764766730719769801789749784820728645627623584548
Percentage of Revenues88.587.987.687.787.788.288.989.288.687.489.489.588.788.388.688.988.187.788.288.687.587.589.090.489.589.991.892.792.591.992.592.291.791.791.892.392.492.092.292.591.790.890.189.789.188.5
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating he:ElectricUtilitySegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AllOtherSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.1180.9510.7070.2150.0160.0060.0030.0040.0140.068-0.1690.1430.0470.0280.120.1270.0770.0950.10.0940.10.0680.087-0.042-0.0340.0720.047-0.005-0.3880.0680.0450.0560.0150.035-0.0050.029-0.005-0.002-0.0110.001-0.737-0.015-0.015-0.014-0.063
Percentage of Revenues0.20.10.10.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.0-0.0-0.00.00.00.00.00.0-0.00.0-0.0-0.0-0.00.0-0.1-0.0-0.0-0.0-0.0
Percentage of InterestIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:AllOtherSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value1560615358150041454214480138491374513517135371336013104129111288412702130991274212693125431242512198119791187011790115731143911273111841067010617104581034010429102381029810149990498219632959292649241912790858925
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

he:AmericanSavingsBankFSB


Assetsdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value89098718839680758019738572337135716470627027692969836889679866186610655964216336618861406014585557775724556554425418537152435159506851165041495249644909
Percentage of Assets57.156.856.055.555.453.352.652.852.952.953.653.754.254.251.951.952.152.351.751.951.751.751.050.650.550.849.851.051.051.450.749.549.549.749.750.050.551.2
Percentage of Assets57.156.856.055.555.453.352.652.852.952.953.653.754.254.251.951.952.152.351.751.951.751.751.050.650.550.849.851.051.051.450.749.549.549.749.750.050.551.2
Percentage of Assets he:AmericanSavingsBankFSB100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries


Assetsdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value6547649464576322633263356388626062536170596758825803571061966107607159695975580057215662568056835634553555905225519950825087526951615174510849614857465646714285
Percentage of Assets42.042.343.043.543.745.846.546.346.246.245.545.645.045.047.347.947.847.648.147.647.847.748.249.149.349.150.049.049.048.649.250.550.450.250.350.149.548.348.747.2
Percentage of Assets42.042.343.043.543.745.846.546.346.246.245.545.645.045.047.347.947.847.648.147.647.847.748.249.149.349.150.049.049.048.649.250.550.450.250.350.149.548.348.747.2
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Assetsdei:
Period End2021-06-302020-12-312019-12-312018-12-31
Value1008977962951
Percentage of Assets6.56.57.07.3
Percentage of Assets6.56.57.07.3
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Assetsdei:
Period End2021-06-302020-12-312019-12-312018-12-31
Value916897877837
Percentage of Assets5.96.06.46.4
Percentage of Assets5.96.06.46.4
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, he:OtherSubsidiaries, srt:ReportableLegalEntities


Assetsdei:
Period End2021-06-302020-12-312019-12-312018-12-31
Value0.0770.0770.1010.101
Percentage of Assets0.00.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:OtherSubsidiaries srt:ReportableLegalEntities100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Assetsdei:
Period End2021-06-302020-12-312019-12-312018-12-31
Value5285525151874776
Percentage of Assets33.935.037.736.5
Percentage of Assets33.935.037.736.5
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Assetsdei:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value991977961970949962956950941951922915903
Percentage of Assets6.56.56.66.76.97.07.17.07.07.37.17.16.9
Percentage of Assets6.56.56.66.76.97.07.17.07.07.37.17.16.9
Percentage of Assets he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Assetsdei:
Period End2021-06-302020-12-312019-12-312018-12-31
Value-661.977-669.785-638.364-598.749
Percentage of Assets-4.2-4.5-4.6-4.6
Percentage of Assets-4.2-4.5-4.6-4.6
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations100.0100.0100.0100.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Assetsdei:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5241525151475129517551875087509350014776472246564510
Percentage of Assets34.135.035.435.437.437.737.637.637.436.536.636.134.4
Percentage of Assets34.135.035.435.437.437.737.637.637.436.536.636.134.4
Percentage of Assets he:HawaiianElectricParent srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Assetsdei:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value914897864861861877854843836837819808793
Percentage of Assets6.06.05.95.96.26.46.36.26.36.46.46.36.1
Percentage of Assets6.06.05.95.96.26.46.36.26.36.46.46.36.1
Percentage of Assets he:MauiElectricCompanyLimited srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany, srt:ReportableLegalEntities


Assetsdei:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0770.0770.0770.1010.1010.1010.1010.1010.1010.1010.1010.1010.101
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value2930282126572508
Percentage of Assets19.520.520.319.1
Percentage of Assets19.520.520.319.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Assetsus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-653.283-669.785-651.852-629.642-650.642-638.364-637.429-634.019-607.902-598.749-582.929-577.324-576.704
Percentage of Assets-4.3-4.5-4.5-4.3-4.7-4.6-4.7-4.7-4.6-4.6-4.5-4.5-4.4
Percentage of Assets-4.3-4.5-4.5-4.3-4.7-4.6-4.7-4.7-4.6-4.6-4.5-4.5-4.4
Percentage of Assets he:EliminationsAndReconcilingItems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

he:BankingSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value8909871883968075801973857233713571647062702769296983688967986618661065596421633661886140601458555777572455665442541853715243
Percentage of Assets57.156.856.055.555.453.352.652.852.952.953.653.754.254.251.951.952.152.351.751.951.751.751.050.650.550.849.851.051.051.450.7
Percentage of Assets57.156.856.055.555.453.352.652.852.952.953.653.754.254.251.951.952.152.351.751.951.751.751.050.650.550.849.851.051.051.450.7
Percentage of Assets he:BankingSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:ElectricUtilitySegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value654764946457632263326335638862606170596758825803571061966107607159695975580057215662568056835634553555905225519950825087
Percentage of Assets42.042.343.043.543.745.846.546.346.245.545.645.045.047.347.947.847.648.147.647.847.748.249.149.349.150.049.049.048.649.2
Percentage of Assets42.042.343.043.543.745.846.546.346.245.545.645.045.047.347.947.847.648.147.647.847.748.249.149.349.150.049.049.048.649.2
Percentage of Assets he:ElectricUtilitySegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllOtherSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value14814515014412912712312111912610899961021041611142861696795332813282.973-0.8253.9989.091
Percentage of Assets1.00.91.01.00.90.90.90.90.90.90.80.80.80.80.80.10.10.10.20.50.60.60.80.30.20.10.30.0-0.00.00.1
Percentage of Assets1.00.91.01.00.90.90.90.90.90.90.80.80.80.80.80.10.10.10.20.50.60.60.80.30.20.10.30.0-0.00.00.1
Percentage of Assets us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1320513003126321218412155115381143011240112941114210907107451074610576109681060510584104431032410096997898949828961895069341935888348821867785788739857986578520826382118044802676927694759675677449
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets84.684.784.283.883.983.383.283.283.483.483.283.283.483.383.783.283.483.383.182.883.383.383.483.183.182.983.782.883.183.083.083.883.884.184.083.483.683.583.783.083.383.283.383.5

us-gaap:Liabilities dei:LegalEntity

he:AmericanSavingsBankFSB


Liabilitiesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value81698002766073557313669365336461650364186393631663746285619160136014597358435752560855685454529852305181503049044884484247224652456646124543444544634421
Percentage of Liabilities61.961.560.660.460.258.057.257.557.657.658.658.859.359.456.556.756.857.256.657.056.256.355.555.155.055.553.855.555.455.855.153.253.253.353.353.854.455.1
Percentage of Assets52.352.151.150.650.548.347.547.848.048.048.848.949.549.547.347.247.447.647.047.246.846.946.345.845.746.045.046.046.046.345.744.644.644.844.844.945.446.1
Percentage of Assets he:AmericanSavingsBankFSB91.791.891.291.191.290.690.390.690.890.991.091.291.391.291.190.991.091.191.090.890.690.790.790.590.590.590.490.190.190.290.190.290.190.190.189.889.990.0

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value592541495411
Percentage of Liabilities4.74.74.53.7
Percentage of Assets4.03.93.83.1
Percentage of Assets srt:ParentCompany20.219.218.616.4

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
Value1560615358150041454214480138491374513517135371336013104129111288412702130991274212693125431242512198119791187011790115731143911273111841067010617104581034010429102381029810149990498219632959292649241912790858925
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

he:AmericanSavingsBankFSB


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value8909871883968075801973857233713571647062702769296983688967986618661065596421633661886140601458555777556554425418537152435159506851165041495249644909
Percentage of LiabilitiesAndStockholdersEquity57.156.856.055.555.453.352.652.852.952.953.653.754.254.251.951.952.152.351.751.951.751.751.050.650.549.851.051.051.450.749.549.549.749.750.050.551.2
Percentage of Assets57.156.856.055.555.453.352.652.852.952.953.653.754.254.251.951.952.152.351.751.951.751.751.050.650.549.851.051.051.450.749.549.549.749.750.050.551.2
Percentage of Assets he:AmericanSavingsBankFSB100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value6547649464576322633263356388626062536170596758825803571061966107607159695975580057215662568056835634553555905225519950825087526951615174510849614857465646714285
Percentage of LiabilitiesAndStockholdersEquity42.042.343.043.543.745.846.546.346.246.245.545.645.045.047.347.947.847.648.147.647.847.748.249.149.349.150.049.049.048.649.250.550.450.250.350.149.548.348.747.2
Percentage of Assets42.042.343.043.543.745.846.546.346.246.245.545.645.045.047.347.947.847.648.147.647.847.748.249.149.349.150.049.049.048.649.250.550.450.250.350.149.548.348.747.2
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Liabilities
Period End2021-06-302020-12-312019-12-312018-12-31
Value1008977962951
Percentage of LiabilitiesAndStockholdersEquity6.56.57.07.3
Percentage of Assets6.56.57.07.3
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Liabilities
Period End2021-06-302020-12-312019-12-312018-12-31
Value916897877837
Percentage of LiabilitiesAndStockholdersEquity5.96.06.46.4
Percentage of Assets5.96.06.46.4
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, he:OtherSubsidiaries, srt:ReportableLegalEntities


Liabilities
Period End2021-06-302020-12-312019-12-312018-12-31
Value0.0770.0770.1010.101
Percentage of LiabilitiesAndStockholdersEquity0.00.00.00.0
Percentage of Assets0.00.00.00.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:OtherSubsidiaries srt:ReportableLegalEntities100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Liabilities
Period End2021-06-302020-12-312019-12-312018-12-31
Value5285525151874776
Percentage of LiabilitiesAndStockholdersEquity33.935.037.736.5
Percentage of Assets33.935.037.736.5
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value991977961970949962956950941951922915903
Percentage of LiabilitiesAndStockholdersEquity6.56.56.66.76.97.07.17.07.07.37.17.16.9
Percentage of Assets6.56.56.66.76.97.07.17.07.07.37.17.16.9
Percentage of Assets he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Liabilities
Period End2021-06-302020-12-312019-12-312018-12-31
Value-661.977-669.785-638.364-598.749
Percentage of LiabilitiesAndStockholdersEquity-4.2-4.5-4.6-4.6
Percentage of Assets-4.2-4.5-4.6-4.6
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations100.0100.0100.0100.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5241525151475129517551875087509350014776472246564510
Percentage of LiabilitiesAndStockholdersEquity34.135.035.435.437.437.737.637.637.436.536.636.134.4
Percentage of Assets34.135.035.435.437.437.737.637.637.436.536.636.134.4
Percentage of Assets he:HawaiianElectricParent srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value914897864861861877854843836837819808793
Percentage of LiabilitiesAndStockholdersEquity6.06.05.95.96.26.46.36.26.36.46.46.36.1
Percentage of Assets6.06.05.95.96.26.46.36.26.36.46.46.36.1
Percentage of Assets he:MauiElectricCompanyLimited srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0770.0770.0770.1010.1010.1010.1010.1010.1010.1010.1010.1010.101
Percentage of LiabilitiesAndStockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value2930282126572508
Percentage of LiabilitiesAndStockholdersEquity19.520.520.319.1
Percentage of Assets19.520.520.319.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidationItems

he:EliminationsAndReconcilingItems


Liabilities
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value-653.283-669.785-651.852-629.642-650.642-638.364-637.429-634.019-607.902-598.749-582.929-577.324-576.704
Percentage of LiabilitiesAndStockholdersEquity-4.3-4.5-4.5-4.3-4.7-4.6-4.7-4.7-4.6-4.6-4.5-4.5-4.4
Percentage of Assets-4.3-4.5-4.5-4.3-4.7-4.6-4.7-4.7-4.6-4.6-4.5-4.5-4.4
Percentage of Assets he:EliminationsAndReconcilingItems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value236723212337232322912276228022422208218321622132210320912097210320752065206620681966194219271921189818971791180117601745172716551624160715931607157515541531153715081496148314411389
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 Assets15.215.115.616.015.816.416.616.616.316.316.516.516.316.516.016.516.316.516.617.016.416.416.316.616.616.816.016.916.616.716.715.915.915.615.716.216.016.116.016.616.316.416.316.20.0

us-gaap:StockholdersEquity dei:LegalEntity

he:AmericanSavingsBankFSB


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value740715736720706691699674661644634612609603606605596586578584579571559557546543534537533528521506502504498506500488
Percentage of StockholdersEquity31.330.831.531.030.830.430.730.129.929.529.328.729.028.828.928.828.728.428.028.229.529.429.029.028.828.629.829.830.330.330.230.630.931.431.231.531.831.9
Percentage of Assets4.74.74.95.04.95.05.15.04.94.84.84.74.74.84.64.84.74.74.74.84.84.84.74.84.84.84.85.05.05.15.04.94.94.94.95.15.15.1
Percentage of Assets he:AmericanSavingsBankFSB8.38.28.88.98.89.49.79.49.29.19.08.88.78.88.99.19.08.99.09.29.49.39.39.59.59.59.69.99.99.89.99.89.99.99.910.210.110.0

he:HawaiianElectricCompanyAndSubsidiaries


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
Value217121572141209320602044204719931971196419571876185218461845182918031799179917661743173117281717169616861682163516181606159315011484147614721443142314151406135513351338133713061188
Percentage of StockholdersEquity91.792.991.690.189.989.889.888.989.390.090.588.088.188.388.087.086.987.187.185.488.689.189.789.489.488.993.990.891.992.092.390.791.491.992.489.890.391.191.888.288.589.590.190.685.6
Percentage of Assets13.914.014.314.414.214.814.914.714.614.714.914.514.414.514.114.414.214.314.514.514.614.614.714.814.815.015.015.315.215.415.414.414.514.314.514.614.514.714.714.614.414.714.714.60.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries33.233.233.233.132.532.332.031.831.531.832.831.931.932.329.829.929.730.230.130.530.530.630.430.230.130.530.131.331.131.631.328.528.828.528.829.129.330.430.10.00.00.031.20.00.0

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

he:HawaiianElectricCompanyAndSubsidiaries, he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Stockholders
Period End2021-06-302020-12-312020-06-302019-12-312018-12-312017-12-312016-12-31
Value322317304298295286291
Percentage of StockholdersEquity13.613.613.313.113.713.714.1
Percentage of Assets2.12.12.12.22.32.22.3
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities32.032.50.031.131.10.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Stockholders
Period End2021-06-302020-12-312020-06-302019-12-312018-12-312017-12-312016-12-31
Value312309295292280270259
Percentage of StockholdersEquity13.213.212.912.813.012.912.6
Percentage of Assets2.02.12.02.12.12.12.1
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:MauiElectricCompanyLimited srt:ReportableLegalEntities34.134.50.033.433.50.00.0

he:HawaiianElectricCompanyAndSubsidiaries, he:OtherSubsidiaries, srt:ReportableLegalEntities


Stockholders
Period End2021-06-302020-12-312020-06-302019-12-312018-12-312017-12-312016-12-31
Value0.0770.0770.1010.1010.1010.1010.101
Percentage of StockholdersEquity0.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries he:OtherSubsidiaries srt:ReportableLegalEntities100.0100.00.0100.0100.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2021-06-302020-12-312020-06-302019-12-312018-12-312017-12-312016-12-31
Value2171214120602047195718451799
Percentage of StockholdersEquity91.791.689.989.890.588.087.1
Percentage of Assets13.914.314.214.914.914.114.5
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries srt:ParentCompany srt:ReportableLegalEntities41.140.80.039.541.00.00.0

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:ConsolidationItems

he:HawaiiElectricLightCompanyInc, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value320317308304300298303300298295294288288286294291291
Percentage of StockholdersEquity13.813.613.313.313.213.113.513.613.713.713.813.713.813.714.014.114.1
Percentage of Assets2.12.12.12.12.22.22.22.22.22.32.32.22.32.22.32.32.3
Percentage of Assets he:HawaiiElectricLightCompanyInc srt:ReportableLegalEntities32.332.532.031.331.731.131.731.631.731.131.931.50.031.70.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, srt:ConsolidationEliminations


Stockholders
Period End2021-06-302020-12-312020-06-302019-12-312018-12-312017-12-312016-12-31
Value-635.296-626.891-599.198-591.969-576.838-557.013-550.946
Percentage of StockholdersEquity-26.8-26.8-26.1-26.0-26.7-26.6-26.7
Percentage of Assets-4.1-4.2-4.1-4.3-4.4-4.3-4.4
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries srt:ConsolidationEliminations96.093.60.092.796.30.00.0

he:HawaiianElectricParent, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value21572141209320602044204719931971196419571876185218461845182918031799
Percentage of StockholdersEquity92.991.690.189.989.889.888.989.390.090.588.088.188.388.087.086.987.1
Percentage of Assets14.014.314.414.214.814.914.714.614.714.914.514.414.514.114.414.214.5
Percentage of Assets he:HawaiianElectricParent srt:ReportableLegalEntities41.240.840.740.239.539.539.238.739.341.039.739.80.040.90.00.00.0

he:MauiElectricCompanyLimited, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value311309298295292292285283283280277272270270265261259
Percentage of StockholdersEquity13.413.212.812.912.812.812.712.813.013.013.013.012.912.912.612.612.6
Percentage of Assets2.02.12.12.02.12.12.12.12.12.12.12.12.12.12.12.12.1
Percentage of Assets he:MauiElectricCompanyLimited srt:ReportableLegalEntities34.034.534.534.333.933.433.433.633.933.533.833.70.034.10.00.00.0

he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value0.0770.0770.0770.1010.1010.1010.1010.1010.1010.1010.1010.1010.1010.1010.1010.1010.101
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets he:RenewableHawaiiAndUluwehiokamaBiofuelsCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0

us-gaap:StockholdersEquity dei:LegalEntity, us-gaap:StatementEquityComponents

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value-2.85-2.885-2.919-1.18-1.228-1.253-1.2790.1720.1460.1230.099-1.134-1.162-1.188-1.2190.1990.1770.1370.1320.9320.9390.9390.9250.0560.0520.0450.608
Percentage of StockholdersEquity-0.1-0.1-0.1-0.1-0.1-0.1-0.10.00.00.00.0-0.1-0.1-0.1-0.10.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0-0.0-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-31
Value-2.85-2.885-2.919-1.18-1.228-1.253-1.2790.1720.1460.1230.099-1.134-1.162-1.188-1.2190.1990.1770.137-0.3221.3371.1861.9410.9250.0560.0520.0670.0450.640.630.608-0.97-0.0320.709
Percentage of StockholdersEquity-0.1-0.1-0.1-0.1-0.1-0.1-0.10.00.00.00.0-0.1-0.1-0.1-0.10.00.00.0-0.00.10.10.10.00.00.00.00.00.00.00.0-0.1-0.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.00.00.0-0.0-0.0-0.0-0.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-31
Value746746746714714714714681681681681614614614614601601601601578578578578578578578578541541541468426389
Percentage of StockholdersEquity31.632.232.030.831.231.431.330.430.831.231.528.829.229.429.328.629.029.129.128.029.429.830.030.130.530.532.330.130.731.429.427.926.3
Percentage of Assets4.84.95.04.94.95.25.25.05.05.15.24.84.84.84.74.74.74.84.84.74.84.94.95.05.15.15.25.15.15.24.64.54.3
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312011-12-312010-12-31
Value115115115113113113113111111111111107107107107106106106106105105105105105105105105102102102979492
Percentage of StockholdersEquity4.95.04.94.95.05.05.05.05.15.15.25.05.15.15.15.15.15.25.25.15.45.45.55.55.65.65.95.75.86.06.16.26.2
Percentage of Assets0.70.80.80.80.80.80.80.80.80.80.90.80.80.80.80.80.80.90.90.90.90.90.90.90.90.90.91.01.01.01.01.01.0
Percentage of Assets he:HawaiianElectricCompanyAndSubsidiaries us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

he:HawaiianElectricCompanyAndSubsidiaries, us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30