AWR


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

Table of contents



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

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:CostsAndExpenses
dei:LegalEntity

us-gaap:GeneralAndAdministrativeExpense
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
dei:LegalEntity

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

us-gaap:InterestExpense
dei:LegalEntity

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

us-gaap:NetIncomeLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementBusinessSegments
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

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

us-gaap:OtherNonoperatingIncomeExpense
dei:LegalEntity
dei:LegalEntity, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:RegulatedOperatingRevenue
dei:LegalEntity, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
dei:LegalEntity, us-gaap:StatementBusinessSegments

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

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

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

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

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

us-gaap:CashAndCashEquivalentsAtCarryingValue
dei:LegalEntity
us-gaap:ConsolidatedEntities
dei:LegalEntity, us-gaap:StatementBusinessSegments
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent
dei:LegalEntity

us-gaap:InventoryRawMaterialsAndSupplies
dei:LegalEntity

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentGross
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtility, us-gaap:StatementBusinessSegments
dei:LegalEntity, us-gaap:StatementBusinessSegments
us-gaap:PublicUtility, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:ConstructionInProgressGross
dei:LegalEntity

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

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill
dei:LegalEntity

us-gaap:FiniteLivedIntangibleAssetsNet
dei:LegalEntity

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity

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

us-gaap:AccountsPayableCurrent
dei:LegalEntity

us-gaap:AccruedLiabilitiesCurrent
dei:LegalEntity

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:NotesPayableCurrent
us-gaap:DebtInstrument

us-gaap:OperatingLeaseLiabilityCurrent
dei:LegalEntity

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

us-gaap:TaxesPayableCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

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

us-gaap:LongTermDebtNoncurrent
dei:LegalEntity

us-gaap:DebtAndCapitalLeaseObligations
dei:LegalEntity
dei:LegalEntity, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:LongTermDebtAndCapitalLeaseObligations
dei:LegalEntity

us-gaap:DeferredIncomeTaxLiabilitiesNet
dei:LegalEntity

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

us-gaap:OtherLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

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

us-gaap:CommonStockValue
dei:LegalEntity

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity

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

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

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementBusinessSegments
dei:LegalEntity, us-gaap:StatementBusinessSegments
us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

us-gaap:DepreciationDepletionAndAmortization
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncreaseDecreaseInAccountsPayable
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsReceivable
dei:LegalEntity

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

us-gaap:NetIncomeLoss
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementBusinessSegments
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation
dei:LegalEntity

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

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
dei:LegalEntity

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

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity

us-gaap:PaymentsOfDividends
dei:LegalEntity
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:Dividends
dei:LegalEntity, us-gaap:StatementEquityComponents
dei:LegalEntity
us-gaap:DebtInstrumentInterestRateStatedPercentage
dei:LegalEntity, us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LongtermDebtType
dei:LegalEntity
us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:ConsolidatedEntities

us-gaap:DeferredTaxLiabilities
dei:LegalEntity

awr:AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries
dei:LegalEntity

awr:CostofConstruction
dei:LegalEntity
awr:DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod
dei:LegalEntity, us-gaap:Range, us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:StatementScenario, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateIncreaseDecrease
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool
dei:LegalEntity
awr:DerivativeActivityVolume

awr:DividendsEquivalentRightsOnShareBasedCompensationNetOfTax
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

awr:DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

awr:GroundwaterProductionAssessment
dei:LegalEntity
dei:LegalEntity
awr:IncreaseDecreaseInRelatedPartyReceivablePayableCurrent

awr:IncreaseDecreaseInUnbilledContractsReceivables
dei:LegalEntity

awr:IncreaseDecreaseReceivableFromGovernment
dei:LegalEntity, us-gaap:StatementBusinessSegments
awr:NumberOfCustomers
dei:LegalEntity
awr:PaymentsForProceedsFromRelatedPartyDebt

awr:PowerPurchasedForPumping
dei:LegalEntity

awr:ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises

awr:ProvisionForDoubtfulAccountsContinuingOperation
dei:LegalEntity
dei:LegalEntity
awr:ProvisionForDoubtfulAccountsTransferToBVESI
dei:LegalEntity
awr:PublicUtilitiesPropertyPlantAndEquipmentDepreciationOnTransportationEquipment
dei:LegalEntity, us-gaap:RegulatoryAsset
awr:RegulatoryAssetAmountBilledToCustomersAsSurcharges
us-gaap:CounterpartyName
awr:RestructuringAndRelatedCostsNetAssetsTransferred

awr:SupplyCostBalancingAccounts
dei:LegalEntity

awr:UndistributedEarningsAllocatedToCommonStock

awr:WeightedAverageDividendsCommonStock

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

us-gaap:AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits
dei:LegalEntity
us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

us-gaap:CapitalExpendituresIncurredButNotYetPaid
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
dei:LegalEntity

us-gaap:CommonStockDividendsPerShareCashPaid
dei:LegalEntity, us-gaap:ConcentrationRiskByBenchmark, us-gaap:StatementBusinessSegments
us-gaap:ConcentrationRiskPercentage1

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContributionOfProperty
dei:LegalEntity

us-gaap:CostOfPurchasedWater
dei:LegalEntity
dei:LegalEntity
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
dei:LegalEntity, us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxesAndTaxCredits
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DepreciationAndAmortization
dei:LegalEntity

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

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
dei:LegalEntity
dei:LegalEntity, us-gaap:LossContingenciesByNatureOfContingency
us-gaap:EnvironmentalRemediationExpense
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables
dei:LegalEntity

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInIncomeTaxes
dei:LegalEntity

us-gaap:IncreaseDecreaseInMaterialsAndSupplies
dei:LegalEntity

us-gaap:IncreaseDecreaseInNotesPayableCurrent

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities
dei:LegalEntity
us-gaap:RegulatoryAsset
us-gaap:IncreaseDecreaseInOtherRegulatoryAssets

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations
dei:LegalEntity

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType, us-gaap:StatementBusinessSegments
us-gaap:RetirementPlanType

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InvestmentIncomeInterest
dei:LegalEntity
dei:LegalEntity
us-gaap:NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1
dei:LegalEntity
us-gaap:OriginationOfNotesReceivableFromRelatedParties

us-gaap:OtherCostAndExpenseOperating
dei:LegalEntity

us-gaap:OtherNoncashIncomeExpense
dei:LegalEntity

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
dei:LegalEntity

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation
dei:LegalEntity

us-gaap:PreferredStockDividendsAndOtherAdjustments

us-gaap:ProceedsFromAdvancesForConstruction
dei:LegalEntity

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentAdditions
dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProvisionForDoubtfulAccounts
dei:LegalEntity

us-gaap:RegulatedOperatingRevenueElectricNonNuclear
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementBusinessSegments

us-gaap:RegulatedOperatingRevenueOther

us-gaap:RegulatedOperatingRevenueWater
dei:LegalEntity
dei:LegalEntity
us-gaap:RelatedPartyTransactionAmountsOfTransaction
dei:LegalEntity
us-gaap:RepaymentOfNotesReceivableFromRelatedParties

us-gaap:RepaymentsOfAdvancesForConstruction
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementBusinessSegments
us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes

us-gaap:SiteContingencyRecoveryFromThirdPartyOfEnvironmentalRemediationCost
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:TaxesExcludingIncomeAndExciseTaxes
dei:LegalEntity

us-gaap:UndistributedEarnings

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UnrealizedGainLossOnInvestments
dei:LegalEntity

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementBusinessSegments
us-gaap:UtilitiesOperatingExpenseOperations

us-gaap:UtilitiesOperatingExpensePurchasedPower
dei:LegalEntity

awr:AccountReceivablefromUSGovernmentNetNoncurrent

awr:AccountsReceivableFromUSGovernmentNetCurrent
us-gaap:ConsolidatedEntities
awr:AccruedIncomeTaxesAndOtherLiabilitiesNoncurrent

awr:AdvancesForConstruction
dei:LegalEntity

awr:AllowanceForDoubtfulAccountsReceivableOtherCurrent
dei:LegalEntity

awr:AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable
dei:LegalEntity

awr:AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer
dei:LegalEntity
dei:LegalEntity
awr:AmountAvailableForDividendDistributionUnderDebtCovenants

awr:AssetsOtherThanPropertyPlantAndEquipmentNet

awr:ContributionsInAidConstructionNet
dei:LegalEntity

awr:DeferredTaxAssetsContributionsAndAdvances
dei:LegalEntity

awr:DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToITCAndExcessDeferredTaxes
dei:LegalEntity

awr:DeferredTaxLiabilitiesBalancingAndMemorandumAccounts
dei:LegalEntity
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetLiabilityNetGainsLosses
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiability
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiabilityPriorServiceCostCredit
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetsLiabilitiesNet
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanAmountsUnfundedAccruedPensionCost
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanExpectedFutureBenefitPayment
us-gaap:RetirementPlanType
awr:DefinedBenefitPlanFairValueOfPlanAssetsSubjectToClaimsOfCreditors
dei:LegalEntity
awr:DueFromRelatedPartiesIncomeTaxesCurrent
dei:LegalEntity, us-gaap:LossContingenciesByNatureOfContingency
awr:EnvironmentalLossContingenciesPaidByThirdParty

awr:FiniteLivedIntangibleAssetsEstimatedFutureAmortizationExpense

awr:FranchiseAndAssessmentFeesTaxes
dei:LegalEntity
dei:LegalEntity
awr:FundingForOverdueElectricBillsPerBudgetActOf2021

awr:LiabilitiesOtherThanLongTermDebtRelatedToCapitalizationNoncurrent
dei:LegalEntity

awr:LineofCreditFacilityIncrementalExpansionofBorrowingCapacity
dei:LegalEntity, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

awr:NonUtilitiesPropertyPlantAndEquipmentGross

awr:PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet
dei:LegalEntity

awr:PropertyPlantAndEquipmentAndInvestmentsOtherNet
dei:LegalEntity

awr:PropertyPlantAndEquipmentBeforeConstructionWorkInProgress
dei:LegalEntity
dei:LegalEntity
awr:RatioofIndebtednesstoEBITDA
dei:LegalEntity
awr:RedemptionPriceOfDebtInstrument
dei:LegalEntity, us-gaap:StatementScenario, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

awr:RegulatoryAndOtherAssets
dei:LegalEntity

awr:RegulatoryAssetCEMA
dei:LegalEntity

awr:RegulatoryAssetNotAccruingCarryingCosts
dei:LegalEntity, us-gaap:RegulatoryAsset
us-gaap:RegulatoryAsset
dei:LegalEntity
awr:RegulatoryAssetWildfireMitigationPlansWMP
dei:LegalEntity, us-gaap:RegulatoryAsset
awr:ReturnonEquityPercentage
us-gaap:StatementScenario, us-gaap:RetirementPlanType
awr:SensitivityAnalysisForDefinedBenefitPlanBenefitObligationImpactOf65BasisPointIncreaseInDiscountRateAmount
us-gaap:StatementScenario, us-gaap:RetirementPlanType
awr:SensitivityAnalysisForDefinedBenefitPlanBenefitObligationImpactOf65BasisPointIncreaseInDiscountRatePercent
dei:LegalEntity, us-gaap:RetirementPlanType
awr:TwoWayPensionbalancingaccounts

awr:UnbilledContractsReceivableFromUSGovernment

awr:Unrealizedlossonpurchasedpowercontracts

awr:UtilitiesElectricPropertyPlantAndEquipmentGross

awr:UtilitiesPropertyPlantAndEquipmentGross

awr:UtilitiesWaterPropertyPlantAndEquipmentGross
dei:LegalEntity
dei:LegalEntity
awr:WaterUtilityReliefFundingForOverdueWaterBillsPerBudgetActOf2021
dei:LegalEntity, us-gaap:RegulatoryAsset
awr:WeightedCostOfCapitalPercent

dei:EntityCommonStockSharesOutstanding
us-gaap:SubsequentEventType
dei:EntityPublicFloat

us-gaap:AccountsAndOtherReceivablesNetCurrent
dei:LegalEntity

us-gaap:AccumulatedDeferredInvestmentTaxCredit
dei:LegalEntity

us-gaap:AllowanceForDoubtfulAccountsReceivable
dei:LegalEntity

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
dei:LegalEntity

us-gaap:AssetRetirementObligation

us-gaap:CapitalizationLongtermDebtAndEquity
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:ContractWithCustomerAssetGrossCurrent

us-gaap:ContractWithCustomerAssetGrossNoncurrent
dei:LegalEntity
us-gaap:ContractWithCustomerAssetNet
dei:LegalEntity
us-gaap:ContractWithCustomerLiability

us-gaap:ContributionsInAidOfConstruction
dei:LegalEntity
dei:LegalEntity
us-gaap:DebtInstrumentFaceAmount
dei:LegalEntity, us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:Range, us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsNet
dei:LegalEntity

us-gaap:DeferredIncomeTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsGross
dei:LegalEntity

us-gaap:DeferredTaxAssetsOther
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:Range, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:ConsolidatedEntities
us-gaap:DueFromRelatedPartiesCurrent
dei:LegalEntity
us-gaap:DueToRelatedPartiesCurrent
dei:LegalEntity
us-gaap:DueToRelatedPartiesCurrentAndNoncurrent
dei:LegalEntity
us-gaap:DueToRelatedPartiesNoncurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent
dei:LegalEntity

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions

us-gaap:EnergyMarketingContractLiabilitiesCurrent

us-gaap:EnergyMarketingContractsAssetsCurrent
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
dei:LegalEntity
us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
dei:LegalEntity

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
dei:LegalEntity
dei:LegalEntity, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
dei:LegalEntity
us-gaap:GovernmentContractReceivable
us-gaap:ConsolidatedEntities
us-gaap:IncomeTaxReceivable

us-gaap:IncomeTaxesReceivable

us-gaap:InterestPayableCurrent
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount
dei:LegalEntity, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:Range, us-gaap:LongtermDebtType
us-gaap:ConsolidatedEntities, us-gaap:Range, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity
us-gaap:LineOfCreditFacilityFairValueOfAmountOutstanding

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
dei:LegalEntity
us-gaap:ConsolidatedEntities, us-gaap:SubsequentEventType

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive
dei:LegalEntity
us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive
dei:LegalEntity
us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour
dei:LegalEntity
us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree
dei:LegalEntity
us-gaap:LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo
dei:LegalEntity
us-gaap:LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths
dei:LegalEntity
us-gaap:LongTermDebtFairValue
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
dei:LegalEntity, us-gaap:FairValueByMeasurementBasis
us-gaap:ConsolidatedEntities, us-gaap:LongtermDebtType
us-gaap:LongTermNotesPayable

us-gaap:NetRegulatoryAssets
awr:PensionAndOtherPostRetirementObligations, dei:LegalEntity, us-gaap:RegulatoryAsset
dei:LegalEntity
dei:LegalEntity, us-gaap:RegulatoryAsset
dei:LegalEntity, us-gaap:RegulatoryLiability
us-gaap:RegulatoryAsset
dei:LegalEntity
us-gaap:NotesPayable

us-gaap:NotesPayableToBank

us-gaap:NotesPayableToBankNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:NotesReceivableRelatedParties
dei:LegalEntity
us-gaap:NotesReceivableRelatedPartiesNoncurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:OtherInvestmentsAndSecuritiesAtCost

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

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
dei:LegalEntity
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted
dei:LegalEntity, us-gaap:CounterpartyName, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligation
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligationDueAfterFifthYear
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligationDueInFifthYear
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligationDueInFourthYear
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligationDueInNextTwelveMonths
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligationDueInSecondYear
dei:LegalEntity, us-gaap:PurchaseCommitmentExcludingLongtermCommitment
us-gaap:PurchaseObligationDueInThirdYear
dei:LegalEntity
us-gaap:RatioOfIndebtednessToNetCapital1
dei:LegalEntity, us-gaap:RegulatoryAsset
us-gaap:RegulatoryAssets

us-gaap:RegulatoryAssetsCurrent
dei:LegalEntity

us-gaap:RegulatoryAssetsNoncurrent
dei:LegalEntity

us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:RelatedPartyTransactionDueFromToRelatedPartyCurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:DebtInstrument

us-gaap:UnbilledContractsReceivable
dei:LegalEntity

us-gaap:UnbilledReceivablesCurrent
dei:LegalEntity

us-gaap:UnbilledReceivablesNotBillableAtBalanceSheetDate

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Goodwill
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Goodwill
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Current Liabilities
Taxes Payable Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Common Stock Value
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Increase Decrease In Prepaid Deferred Expense And Other Assets
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Proceeds From Issuance Of Long Term Debt
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁████▇▇▇▇▇258.101257.528256.666256.622256.223255.841255.566255.408254.969254.297253.689253.251251.092250.339250.124249.468248.286247.089247.232246.064245.36244.568245.022244.327247.034251.343253.199253.957254.61254.217253.961252.351503.254499.748498.644494.06473.946469.692466.612462.258458.456NA454.77NANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock█▇▇▇▇▇▆▅▅▄▃▃▂▂▁36.93236.91336.88936.88936.88436.88436.84736.83936.83236.79536.75836.74536.73336.73336.681NANANA36.571NANANA36.502NANANA38.287NANANA38.721NANANA19.237NANANA0.018789NANANA0.018631NANA
 us-gaap:CommonStockSharesOutstanding dei:LegalEntity,us-gaap:StatementEquityComponents awr:GoldenStateWaterCompany,us-gaap:CommonStockNANA0.00017NANANA0.000165NANANA0.000165NANANA0.000146NANANA0.000146NANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStockNANA36.889NANANA36.847NANANA36.758NANANA36.681NANANA36.571NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁37.00736.993NA37.00237.036.969NA36.99636.96336.951NA36.9536.91236.874NA36.85636.82536.782NA36.76236.75236.697NA37.26637.90938.408NA38.9339.00138.944NA38.92338.69238.622NA38.20637.8937.946NA37.70437.47637.556NA37.46837.44
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁36.91636.898NA36.88636.88436.86NA36.83536.80436.773NA36.73736.73336.712NA36.65936.62436.59NA36.56136.55436.521NA37.06337.70238.205NA38.70438.78138.747NA38.69638.61238.53NA38.11837.76437.662NA37.40237.33637.296NA37.1937.152
us-gaap:EarningsPerShareBasic █▅▅█▇▃▄██▃▃▆▄▂▃▆▆▃▃▆▄▂▃▆▄▃▃▅▄▂▂▅▄▃▂▅▄▂▁▄▄▁▂▁▂0.720.520.550.720.690.380.450.760.720.350.370.620.440.290.350.570.620.350.309999999999999830.590.460.280.320000000000000060.570.410.320.35000000000000010.540.390.280.300000000000000040.540.4250.3450.26500000000000010.4850.3950.2650.179999999999999940.4150.4250.20.2450.180.24
us-gaap:EarningsPerShareDiluted █▅▅█▇▃▄██▃▃▆▄▂▃▆▆▃▂▆▄▂▃▆▄▃▃▅▄▂▂▅▄▃▂▅▄▂▁▄▄▁▂▁▂0.720.520.540.720.690.380.450.760.720.350.370.620.440.290.350.570.620.340.300000000000000040.590.450.280.310000000000000050.560.410.320.35000000000000010.540.390.280.300000000000000040.530.4250.3450.260.4850.3950.2650.175000000000000040.4150.4250.20.2450.1750.24
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 Cost Ratio dei:LegalEntity awr:GoldenStateWaterCompany█▁91.63375.029NA98.70194.75382.392NA107.24595.54875.352NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity awr:GoldenStateWaterCompany▅▁▁▆▅▃▃█▆▁▁▆▃▁▁▆▄▂▁▆▄▂▃█▆▃▂█▅▃▃▇▅▂▂▆▄▂▁▆▄91.63375.02973.43898.70194.75382.39281.233107.24595.54875.35275.22695.56484.57474.24475.13699.91388.34676.90674.29598.76388.75976.88581.388105.21995.4782.47379.972105.31494.5681.21383.326102.78192.46679.96777.74999.15389.25977.01475.598.31487.861NANANANA
 Operating Margin dei:LegalEntity awr:GoldenStateWaterCompany▅▁▁▆▅▃▃█▆▁▁▆▃▁▁▆▄▂▁▆▄▂▃█▆▃▂█▅▃▃▇▅▂▂▆▄▂▁▆▄91.63375.02973.43898.70194.75382.39281.233107.24595.54875.35275.22695.56484.57474.24475.13699.91388.34676.90674.29598.76388.75976.88581.388105.21995.4782.47379.972105.31494.5681.21383.326102.78192.46679.96777.74999.15389.25977.01475.598.31487.861NANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments awr:AmericanStatesUtilityServices,srt:ReportableLegalEntities,awr:ContractedServices▁█28.67330.492NA26.69926.52526.685NA27.25129.09926.381NA28.61822.327NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,srt:ReportableLegalEntities,awr:ElectricServiceUtilityOperations▁█8.10811.539NA8.288NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity,us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompany,srt:ReportableLegalEntities,awr:WaterServiceUtilityOperations█▁91.63375.029NA98.70187.07471.424NA95.24988.1464.723NA87.68976.733NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 TTM Greenblatt ROC _ _▇▅▅▇▆▄▃█▇▂▃▆▄▂▃▇█▃▃▇▅▂▃█▅▃▄▇▅▃▃▆▆▄▂▆▅▃▁▅▅▂37.84730.32929.27739.80735.71625.69924.72442.72439.4320.19522.74933.97525.56818.69121.95538.56741.81624.73822.09239.61731.77421.23321.88441.18530.5324.8925.38239.89531.022.76821.65136.16433.29427.96321.12236.4830.12523.36715.5532.4229.13917.995NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CostsAndExpenses █▁90.56786.731NA93.88185.56283.378NA91.77285.21781.538NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense ▄▅▃▄▄▆▄▄▃▅▄▅▄▄▃▅▄▄▃▃▄▄▄▃▄▃▂▄▃▄▄▄▂▂▃▂▂▁▃▂▂▂██▁20.6322.05319.62320.64420.39822.9521.20720.62619.52921.67220.51921.5720.21320.29319.12821.7920.45820.28619.16519.76821.28820.77320.54719.27220.47119.52718.55420.17819.40720.18421.18820.08318.11317.90718.81717.36217.79216.58519.2718.58518.30518.41925.65726.28216.568
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments █▁34.03825.182NA35.57533.89317.973NA37.41134.61516.16217.91629.89120.73513.34618.17233.51437.09919.55617.3734.34726.79815.96317.51335.47325.18220.04721.46534.64725.61617.37817.26130.74427.7522.71416.36531.124.88717.74111.21826.25822.14212.46812.99211.54715.369
us-gaap:IncomeTaxExpenseBenefit ▄▃▄▅▄▂▂▅▄▁▂▄▂▁▃▇█▄▃▇▅▃▃█▅▄▄▇▆▃▃▅▆▅▃▇▅▄▂▆▅▃▂▃▃7.4625.9146.979.0458.2813.9014.1249.4057.8313.314.1276.9394.3872.5645.30412.50814.3076.8556.15812.70810.0565.8135.90514.3949.5347.8987.95313.47610.2626.3575.4819.90511.1489.2496.07412.4369.8097.6264.50810.6419.4145.5134.735.8786.499
us-gaap:InterestExpense ▅▆▂▆▃▅▄▆▆▆▄▅▅▅▂▄▅▅▂▄▄▄▂▄▄▃▁▄▄▄▂▅▄▄▂▅▄▅▂▆█▄▂▂▅6.0326.2584.9986.1615.3226.055.7086.2796.2826.3175.5145.9486.0485.9234.9765.7755.9265.9055.0365.735.6035.6234.8495.4845.5275.2284.6935.5195.7785.6275.0175.8525.7685.7784.9576.0185.726.074.8746.1946.8695.7445.1454.9635.87
us-gaap:InterestIncomeExpenseNonoperatingNet ▁▁█▁▁▁█▁▁▁█▁▁▁█▁▁▁█▁▁▁█▁▁▁█▁▁▁█▁▁▁▁▁▁▁▁▁▁-5.684-5.80336.899-5.845-4.832-5.49237.571-5.453-5.406-5.37535.961-5.307-5.412-5.38737.198-5.454-5.306-5.64637.623-5.524-5.413-5.45136.537-5.366-5.425-5.11637.155-5.295-5.655-5.51538.594-5.667-5.628-5.591-4.753-5.599-5.225-5.855-4.515-5.992-6.708NANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet dei:LegalEntity,us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments awr:AmericanStatesUtilityServices,srt:ReportableLegalEntities,awr:ContractedServices▁█0.0880.229NA0.0740.220.077NA0.1440.219-0.361NA-0.118-0.071NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet dei:LegalEntity,us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,srt:ReportableLegalEntities,awr:ElectricServiceUtilityOperations▁█-0.088-0.086NA-0.054NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet dei:LegalEntity,us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompany,srt:ReportableLegalEntities,awr:WaterServiceUtilityOperations█▁-5.464-5.711NA-5.806-4.857-5.133NA-5.206-5.112-5.237NA-5.039-5.047NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:ParentCompany,us-gaap:IntersegmentElimination▁█0.220.235NA0.059-0.056-0.11NA-0.157-0.1670.146NA0.0950.083NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss █▅▅█▇▃▄██▃▃▆▄▂▃▆▆▃▂▆▄▂▃▆▄▃▃▆▄▂▃▆▄▃▂▅▄▂▁▄▄▁▂▁26.57619.26820.21126.5325.61214.07216.728.00626.78412.85213.78922.95216.34810.78212.86821.00622.79212.70111.21221.63916.74210.1511.60821.07915.64812.14913.51221.17115.35411.02111.7820.83916.60213.46510.29118.66415.07810.1156.70915.59915.9627.5899.086.652NA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic █▅▅█▇▃▄██▃▃▆▄▂▃▆▆▃▂▆▄▂▃▆▄▃▃▆▄▂▃▆▄▃▂▅▄▂▁▄▄26.50119.21120.14226.43925.52114.02616.63927.88126.66212.79213.71622.82916.26110.72912.78320.89522.66812.64111.15721.51216.64110.09511.49320.95915.55712.08313.4421.04915.26410.9611.70820.71316.37613.25810.20918.52114.9710.0486.65715.48615.852NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted █▅▅█▇▃▄██▃▃▆▄▂▃▆▆▃▂▆▄▂▃▆▄▃▃▆▄▂▃▆▄▃▂▅▄▂▁▄▄26.54119.23120.16926.48725.57214.03516.65727.95626.73712.80513.73622.89816.29710.73712.8120.95622.74412.65911.16621.59116.69210.10511.53521.03215.60112.10413.46821.12315.30710.97811.73220.79116.37613.25810.23918.52114.9710.086.67115.56115.926NANANANA
us-gaap:NonoperatingIncomeExpense ▆▄█▅█▁▆▄▄▅▄▅▄▄▆▄▅▄▅▄▄▄▅▃▄▄▆▄▄▄▅▄▄▄▅▄▄▃▅▃▂▄▆▄▃-3.809-5.147-2.096-4.232-1.823-7.726-3.9-5.313-4.815-4.033-4.833-4.084-4.833-5.345-3.783-5.053-4.717-5.182-4.722-5.27-4.976-5.27-4.371-5.712-5.348-4.843-3.917-5.248-5.384-5.39-4.39-5.42-5.544-5.249-4.757-5.38-5.238-5.626-4.332-6.162-6.997-5.527-3.629-5.35-5.781
 us-gaap:NonoperatingIncomeExpense dei:LegalEntity awr:GoldenStateWaterCompany▆▄█▅█▁▆▄▄▅▅▅▅▄▆▄▅▄▅▄▄▄▅▃▄▄▆▄▄▄▅▄▄▄▅▄▄▄▅▃▂-3.86-5.06-2.289-4.323-1.947-7.662-3.917-5.237-4.913-4.185-4.665-4.207-4.783-5.292-3.691-4.919-4.567-5.055-4.639-5.218-5.165-5.219-4.29-5.729-5.486-4.841-3.917-5.248-5.336-5.378-4.418-5.42-5.501-5.228-4.734-5.356-5.225-5.57-4.318-6.16-7.007NANANANA
us-gaap:OperatingIncomeLoss ▇▅▅▇▆▄▃█▇▂▃▆▄▂▃▇█▃▃▇▅▂▃█▅▃▄▇▅▃▃▆▆▄▂▆▅▃▁▅▅▂▁▁▂37.84730.32929.27739.80735.71625.69924.72442.72439.4320.19522.74933.97525.56818.69121.95538.56741.81624.73822.09239.61731.77421.23321.88441.18530.5324.8925.38239.89531.022.76821.65136.16433.29427.96321.12236.4830.12523.36715.5532.4229.13917.99516.62116.89721.15
us-gaap:OtherNonoperatingIncomeExpense ▆▅▇▆█▁▆▄▅▆▃▆▅▄▅▅▅▅▄▄▅▄▄▄▄▄▄▄▄▄▅▄▄▄▄▄▄▄▄▄▄▄▄▃▄1.8750.6562.4651.6133.009-2.2341.2030.140.5911.342-1.0841.2230.5790.0420.6030.4010.5890.4640.1250.2540.4370.1810.352-0.3460.0770.2730.3080.0470.2710.1250.4320.2470.0840.342-0.0040.219-0.0130.2290.183-0.17-0.2890.080.095-0.553-0.069
 us-gaap:RegulatedOperatingRevenue dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:Alternativerevenuesprogram,awr:ElectricServiceUtilityOperations▁█0.2660.34NA0.431NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:AmericanStatesUtilityServices,awr:Wastewater,awr:ContractedServices▃▄▃▂▅▄▅▅▆▅█▄▁▁9.90811.60911.0919.55613.05311.98413.66413.45414.47913.02617.6411.7098.0947.484NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:AmericanStatesUtilityServices,us-gaap:PublicUtilitiesInventoryWater,awr:ContractedServices▃▃█▃▁▂▃▁▂▁▃▃▂▁18.76518.88329.58217.14313.47214.70118.09613.79714.6213.35518.13916.90914.23313.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:SurchargesCostrecoveryActivities,awr:ElectricServiceUtilityOperations▁█0.0440.202NA0.188NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:TariffbasedRevenues,awr:ElectricServiceUtilityOperations▁█8.3311.677NA8.531NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompany,awr:OtherProductsandServices,awr:WaterServiceUtilityOperations▆▅▇█▄▄▆▇▂▂▁▄▂▂0.5230.5170.5440.5690.4910.4950.5310.5550.4610.4590.4320.4860.4530.442NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompany,awr:SurchargesCostrecoveryActivities,awr:WaterServiceUtilityOperations▄▂▃▅▄▃▆█▃▁▂▄▃▃0.9750.5340.8231.2170.9620.7341.3681.90.7630.2910.5040.9370.7280.793NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompany,awr:TariffbasedRevenues,awr:WaterServiceUtilityOperations▆▄▆█▄▃▅▇▄▁▄▆▃▂86.68774.28886.11797.03677.26469.25479.74389.0576.87659.57575.58887.20470.25165.775NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc,awr:SurchargesCostrecoveryActivities,awr:ElectricServiceUtilityOperationsNANA0.062NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc,awr:TariffbasedRevenues,awr:ElectricServiceUtilityOperationsNANA9.335NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:StatementBusinessSegments awr:AmericanStatesUtilityServices,awr:ContractedServices▄▄█▃▃▃▅▃▄▃▆▄▂▁28.67330.49240.67326.69926.52526.68531.7627.25129.09926.38135.77928.61822.32720.484NANANANANANANANANANANANANANANANA26.5928.13328.22930.58534.67934.36825.05229.87820.56821.39521.968NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:ElectricServiceUtilityOperations▁█8.37411.879NA8.719NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompany,awr:WaterServiceUtilityOperations▆▄▆█▄▃▅▇▄▁▄▆▃▂88.18575.33987.48498.82278.71770.48381.64291.50578.160.32576.52488.62771.43267.01NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:StatementBusinessSegments awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc,awr:ElectricServiceUtilityOperationsNANA9.397NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▆▅▆▇▅▃▄▇▆▂▄▆▃▁▃▆▄▂▃▆▄▁▄▇▄▂▄█▄▂▄▇▅▄▄▇▄▃▁▅▄▁▃▄▁128.414117.06124.2133.688121.278109.077112.993134.496124.647101.733111.005124.182106.90194.728104.18124.418113.19598.81106.8123.806111.95493.527110.115132.975114.618100.933109.878138.327115.641101.945109.916130.914120.695110.552112.428133.521114.311106.64895.241119.897109.82994.307103.7111.395.476
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets █▇▇▇▆▆▆▅▅▅▄▄▄▃▃▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▃▂▂▂▂▂▂▁▁▁1842.3581792.8211791.6031726.4181697.9681660.8891641.3311604.3811567.2831526.0971501.4331465.0421441.1221423.6641416.7341486.4861462.6531480.2681470.4931440.3861406.2991368.8911348.61362.1641343.3551367.421378.2981326.1151327.0921333.7711310.1831351.0531312.9861289.5141280.9431289.6381252.761246.6291238.3621195.8481197.879NA1192.035NANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▆▆▆▅▅▅▄▄▄▃▃▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▃▂▂▂▂▂▂▁▁▁1842.3581792.8211791.6031726.4181697.9681660.8891641.3311604.3811567.2831526.0971501.4331465.0421441.1221423.6641416.7341486.4861462.6531480.2681470.4931440.3861406.2991368.8911348.61362.1641343.3551367.421378.2981326.1151327.0921333.7711310.1831351.0531312.9861289.5141280.9431289.6381252.761246.6291238.3621195.8481197.879NA1192.035NANA
us-gaap:StockholdersEquity ██▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▄▄▃▃▃▃▃▃▂▂▂▁▁▁664.134649.393641.673633.82619.288604.583601.53595.947578.787561.5558.223554.161539.21531.524529.945525.812513.025497.944494.297490.799476.696467.401465.945470.023477.578497.365506.801510.312495.181495.799492.404486.887465.385461.721454.579448.852426.914415.019408.666405.052NANA377.541NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent ▂▁▄▃▂▂▁▂▁▁▂▂▃▃▄▃▃▆▅▂▂▂▂▂▃▆█▆▇█▆▇▆▅▆▆▅▅▅▄▅136.312118.912157.115139.407137.026127.405122.456132.469122.025116.776131.468134.898141.167145.676155.463146.663149.536192.079166.875136.856132.816131.125132.697135.463150.228189.397209.451186.555197.85213.242191.617202.565181.12173.872184.033187.09175.854171.872165.601160.146172.173NA204.984NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▂▄▂▂▁▁▂▁▁▂▁▁▂▁▂▁▁▁▁▁▂▁▃▅██▆██▄▃▂▄▃▅▃▂▁▁▂▁▁▂▂5.3596.95136.7378.1276.4960.4291.33410.3981.5161.8447.1411.9765.5575.9840.2146.6612.1240.6210.4362.7894.5188.4574.36427.25443.86274.67575.98857.86277.84974.93638.22626.1628.52532.79423.48643.06625.9156.5581.3155.21511.2622.3714.1977.6926.603
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents dei:LegalEntity,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:ElectricServiceUtilityOperations▂▁▄█0.220.1830.3670.583NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▆▃▆█▇▄▃▆▄▂▄▇▅▂▅▆▅▁▃▄▃▁▂▄▂▁▂▅▅▃▄▇▆▂▃▆▄▂▃▅▄28.51622.01629.16233.72930.35524.59920.90728.08824.24517.48523.39529.91526.63119.22426.12729.39225.33815.52319.99322.9120.41416.18318.9422.11219.24716.77318.81426.34825.18119.90223.82930.30327.40117.31519.49128.79222.21218.86920.39925.04823.347NA17.507NANA
us-gaap:InventoryRawMaterialsAndSupplies ████▇▆▅▅▅▅▅▄▄▃▄▄▄▄▃▄▄▄▄▅▃▃▂▃▂▃▃▄▅▆▄▆▄▄▂▁▁8.7738.7518.6198.6998.1687.3436.4296.096.1895.8925.7755.6225.3644.6014.7955.3775.1484.8174.2944.7335.2945.185.4155.8744.1523.9043.5883.9233.6714.3194.5585.1866.127.215.3486.5784.9584.7973.072.8172.487NA2.161NANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▆█▄▅▆▇▄▅▅▆▄▅▅▇▄▄▃▄▂▃▃▄▂▂▃▄▁▃▃▃▁▂▃▃▃▄▄▄▂▃▃8.36510.0285.5556.5418.0039.4175.4136.4437.0058.3516.0636.9156.7698.7835.5965.2484.9515.2373.7354.4664.6195.4533.2293.9314.1345.8532.7454.2614.5424.8762.4813.6794.1894.2514.3915.385.8225.4393.9594.8965.127NA6.157NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross ██▆▇▇▇▆▆▆▆▅▅▅▅▄▅▄▄▄▄▄▄▃▃▃▃▂▃▃▃▂▂▂▂▁▂▂▁▁▁▁2149.9112117.1011930.2242040.6332010.3941980.5391839.4211955.5111928.3581895.0851780.111819.2591787.6561759.5251674.5271714.4571686.4951661.1861620.3251686.0381655.691619.411527.5371558.4081534.2281517.1471455.4161490.9871474.0251459.6911395.9591434.4031402.8321376.8031314.2831354.7511333.0491320.8551268.1121298.2631281.208NA1233.011NANA
us-gaap:ConstructionInProgressGross NANA150.145NANANA119.547NANANA78.055NANANA63.835NANANA63.354NANANA62.955NANANA48.343NANANA57.183NANANA45.824NANANA42.224NANANA50.197NANA
 us-gaap:ConstructionInProgressGross dei:LegalEntity awr:GoldenStateWaterCompanyNANA118.37NANANA117.676NANANA76.737NANANA63.486NANANA61.81NANANA62.36NANANA48.17NANANA56.754NANANA45.72NANANA41.208NANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ██▇▇▇▇▆▆▆▆▅▅▅▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁1570.6331542.4231512.0431479.111456.3981432.3971415.7051378.3661355.6631325.5021296.311262.9151238.7891218.831204.9921181.6161155.2031137.1591150.9261128.5881107.1371079.3181060.7941032.1191015.5071007.5631003.52995.443988.668983.929981.477968.459946.74929.538917.791912.027900.009897.835896.5891.134882.993NA854.956NANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities srt:ParentCompanyNANA716.627NANANA616.725NANANA574.33NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill NANA0.399NANANA0.402NANANA0.422NANANA0.422NANANA0.409NANANA0.427NANANA0.427NANANA0.427NANANA0.427NANANA0.427NANANANANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill dei:LegalEntity awr:GoldenStateWaterCompanyNANA0.399NANANA0.402NANANA0.404NANANA0.404NANANA0.427NANANA0.409NANANA0.409NANANA0.409NANANA0.409NANANA0.409NANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA5.861NANANA5.68NANANA6.423NANANA7.861NANANA9.106NANANA9.944NANANA11.012NANANA12.875NANANA14.421NANANA15.939NANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet dei:LegalEntity awr:GoldenStateWaterCompanyNANA4.203NANANA5.252NANANA5.983NANANA7.4NANANA9.57NANANA9.468NANANA10.524NANANA12.375NANANA13.909NANANA15.415NANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇▇▇▇▇███▇▄▁10.63310.71811.14611.51611.96712.55613.16813.01711.0586.2760.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▅▅▅▄▃▃▃▁▁▁▁▁▁▁▁▃▃▁▁▂▂▂▅▄▄▆▆▆▆▇▇█████▆▆▆▃▃10.70210.55310.59710.1917.7057.6997.7025.4265.4185.3655.3225.75.6935.7085.6678.5047.4164.9345.0686.7736.7386.74911.3919.5099.59912.05912.10512.03313.32213.60514.22715.37215.48715.41215.58715.81312.45612.512.4748.3958.585NA8.101NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AccountsPayableCurrent █▆▇▅▅▃▆▇▆▅▆▄▃▁▄▅▃▁▃▄▅▄▄▃▂▁▂▄▃▂▄▇▅▃▂▅▂▁▁▃▆65.95157.3663.78853.64451.77143.51655.61659.77155.64553.20559.53250.44843.39138.79450.97853.80445.21437.2643.72448.22953.97547.85650.58546.51742.33636.95241.85549.7445.41742.59349.78762.89855.21646.60540.56952.08139.08938.09737.87343.65657.972NA36.155NANA
us-gaap:AccruedLiabilitiesCurrent ▄█▄█▁▇▁▇▁▇▂▇▂▇▂▇▂▇▂▇▂▇▂▆▂▆▂▆▃▆▃▆▃▆▃▇▃▇▃▇▃4.4967.2774.8327.2452.9356.4233.056.4883.1096.4923.8656.563.8346.6173.8616.5763.8316.6263.8646.5953.8526.6233.6266.2823.5466.2923.5496.1433.8946.2483.8976.2513.9166.243.9096.4233.9216.433.9386.443.902NA3.256NANA
us-gaap:ContractWithCustomerLiabilityCurrent ▁▁▂▆▇▇▇█▇▇▅0.6881.0491.88.6710.56910.67511.16712.68911.56410.4267.53NANA6.5833.911NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ▂▃▃▃▆▄▃▃▂▂▅▅▄█▅▅▄▇▇▇▆▄▃▃▁▁▂▃▃▃▂▃▂▁▁▂▂▂▂▃▃111.351113.01118.572113.456158.687132.52115.998119.847106.346107.63146.585143.186129.84196.491156.662151.869140.454178.673177.944179.848160.21139.051123.507123.97695.16796.73499.29120.593127.501119.076100.906115.673102.44889.84493.697109.24599.615107.372104.37116.4124.63NA178.842NANA
 us-gaap:NotesPayableCurrent us-gaap:ConsolidatedEntities,us-gaap:DebtInstrument srt:ParentCompany,us-gaap:LongTermDebtNANA114.0NANANA205.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NotesPayableCurrent us-gaap:DebtInstrument us-gaap:LongTermDebtNANA134.2NANANA205.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ███▇▇▇▇▇▇█▁2.0492.012.0131.8121.7941.8151.8491.8411.8082.0270.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▂▁▁▂▂▁▁▂▁▁▂▃▄▃▅▃▂▂▂▁▁▁▁█▇▇█▇▄▄▃▅▃▄▂▇▅▄▆▇▅10.92910.4510.43710.76910.5410.24310.34110.65410.0079.84310.73112.7813.26212.72715.10912.43411.74211.41711.29710.42110.18510.16710.20918.24417.45117.71118.7617.16213.33113.03612.96215.06212.43813.54711.66217.06214.98814.27416.69317.65514.428NA17.017NANA
us-gaap:TaxesPayableCurrent ▁▅▅▃▄▁▁▂▃▃▁▂▁▁▁▅█▁▁▅▁▁▁▃▁▁▁▄▃▁▁▁▁▁▁▂▂▂▁▁▁0.396.4746.7833.0535.4010.1710.0952.0193.1043.8130.361.0490.4860.2380.2256.01311.7260.2530.1495.9580.0510.4540.0682.8580.120.7990.6385.6422.8080.6550.5070.7950.4370.750.5111.7261.1291.6540.3320.4870.521NA2.277NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LiabilitiesNoncurrent NANA591.01NANANA642.807NANANA515.538NANANA409.088NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LiabilitiesNoncurrent dei:LegalEntity awr:GoldenStateWaterCompanyNANA447.916NANANA445.035NANANA481.261NANANA414.076NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LiabilitiesNoncurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA115.648NANANA201.614NANANA97.019NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▇███▁▁▁▁▁▁▁▁▁▁▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▃▃▃▃▃▃▄▄▄▄▄▄412.345440.326440.348440.343280.886280.971280.996281.001281.014281.07281.087281.01281.031281.053321.039320.949320.969320.985320.981320.897320.91320.91325.541325.55325.613325.722325.798310.807310.912326.01326.079332.088332.359332.446332.463344.248341.541340.374340.395340.404340.395NA299.839NANA
us-gaap:DebtAndCapitalLeaseObligations NANA444.271NANANA284.699NANANA324.978NANANA325.265NANANA325.582NANANA325.853NANANA326.09NANANA332.377NANANA335.791NANANA340.686NANANA300.215NANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity awr:GoldenStateWaterCompanyNANA444.271NANANA284.699NANANA324.978NANANA325.265NANANA325.582NANANA325.853NANANA326.09NANANA332.377NANANA335.791NANANA340.686NANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:AmericanRecoveryAndReinvestmentActObligationDue2033NANA3.219NANANA3.406NANANA3.581NANANA3.745NANANA3.896NANANA4.034NANANA4.158NANANA4.269NANANA4.259NANANA0.851NANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable217PercentDue2030NANA85.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable290PercentDue2040NANA75.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable3.45PercentDue2029NANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA0.0NANANANANANANANANANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable5.5PercentDue2026NANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.745NANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:StateWaterProjectDue2035NANA3.322NANANA3.563NANANA3.667NANANA3.772NANANA3.902NANANA4.0NANANA4.077NANANA4.19NANANA4.453NANANA4.559NANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType awr:AmericanRecoveryAndReinvestmentActObligationDue2033NANA3.219NANANA3.406NANANA3.581NANANA3.745NANANA3.896NANANA4.034NANANA4.158NANANA4.269NANANA4.259NANANA0.851NANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType awr:NotesPayable217PercentDue2030NANA85.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType awr:NotesPayable290PercentDue2040NANA75.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType awr:NotesPayable3.45PercentDue2029NANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA15.0NANANA0.0NANANANANANANANANANANANANANA
 us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType awr:NotesPayable5.5PercentDue2026NANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.73NANANA7.745NANANA7.785NANA
 us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType awr:StateWaterProjectDue2035NANA3.322NANANA3.563NANANA3.667NANANA3.772NANANA3.902NANANA4.0NANANA4.077NANANA4.19NANANA4.453NANANA4.559NANANA4.617NANA
us-gaap:LongTermDebtAndCapitalLeaseObligations NANA440.348NANANA280.996NANANA281.087NANANA321.039NANANA320.981NANANA325.541NANANA325.798NANANA326.079NANANA332.463NANANA340.395NANANA299.839NANA
 us-gaap:LongTermDebtAndCapitalLeaseObligations dei:LegalEntity awr:GoldenStateWaterCompanyNANA440.348NANANA280.996NANANA281.087NANANA321.039NANANA320.981NANANA325.541NANANA325.798NANANA326.079NANANA332.463NANANA340.395NANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▆▅▄▃▂▁134.644131.894131.172129.137127.953126.456125.304NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ███▅▅▅▅▄▄▄▄▃▄▄▄▂▃▃▃▂▃▂▂▄▄▄▄▁▂▂▁▅▅▅▅▅▅▅▅▂▂96.76696.20195.63966.92469.95369.21368.46957.04259.88958.88757.63654.23959.40258.62657.69546.86852.24750.83649.85644.61448.85847.65342.66659.1963.65863.33961.77334.87341.66440.31738.72670.94573.49373.71871.61868.5570.81170.51868.35341.16944.809NA42.152NANA
us-gaap:OtherLiabilitiesNoncurrent ██▇█▇▆▆▄▄▄▄▄▄▄▄▆▅▄▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁15.74315.64415.43316.24115.15914.00513.92511.09211.01510.94511.26211.21811.14411.08411.00913.80912.6410.16411.11610.12510.50510.58610.6266.6576.7086.7376.7716.7976.8866.5176.5246.5696.8066.8256.8777.0187.046.9016.9817.1257.159NA7.278NANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▆▆▇▇▇███▇▄▁9.0289.1599.63610.16110.61211.17411.73911.5369.5484.4390.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA2.318NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA1.825NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA1.503NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA1.324NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA3.925NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ██▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▄▄▃▃▃▃▃▃▂▂▂▁▁▁664.134649.393641.673633.82619.288604.583601.53595.947578.787561.5558.223554.161539.21531.524529.945525.812513.025497.944494.297490.799476.696467.401465.945470.023477.578497.365506.801510.312495.181495.799492.404486.887465.385461.721454.579448.852426.914415.019408.666405.052NANA377.541NANA
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁████▇▇▇▇▇258.101257.528256.666256.622256.223255.841255.566255.408254.969254.297253.689253.251251.092250.339250.124249.468248.286247.089247.232246.064245.36244.568245.022244.327247.034251.343253.199253.957254.61254.217253.961252.351503.254499.748498.644494.06473.946469.692466.612462.258458.456NA454.77NANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▄▄▃▃▃▃▂▂▂▂▂▁▁▁▁406.033391.865385.007377.198363.065348.742345.964340.539323.818307.203304.534300.91288.118281.185279.821276.344264.739250.855247.065244.735231.336222.833220.923225.696230.544246.022253.602256.355240.571241.582238.443234.536213.758211.847205.257201.822189.941180.173175.36173.923163.581NA150.156NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▃▆█▅▁▆▇▁▅▄16.46824.67634.32741.5830.60915.65432.5639.63715.28729.3828.369NANANANANANANANANANANANANANANANANANANANANANANA9.91527.64237.34726.5917.5329.69812.1820.75916.637.593NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▄▄▆█▆▁█▂▂▃-39.103-36.98-36.973-32.154-29.106-33.377-42.523-29.803-40.52-40.349-39.285NANANANANANANANANANANANANANANANANANANANANANANA-19.936-18.657-14.476-14.967-16.491-25.7019.132-17.474-20.645-19.326NA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity awr:GoldenStateWaterCompany█▁▅▆▆▄▂▆▃▂▃-20.034-43.715-30.155-27.998-27.639-31.892-39.759-28.036-37.493-38.9-37.166NANANANANANANANANANANANANANANANANANANANANANANA-19.601-18.437NANA-16.349-25.374NANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:ElectricServiceUtilityOperations▁▄▁█-6.416-4.782-6.3-3.039NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▁█▂▄▆▄▃▇▄▆21.043-17.48231.256-7.7954.56416.8180.899-0.95224.9055.67216.081NANANANANANANANANANANANANANANANANANANANANANANA-9.5598.166-3.514-6.38-4.939-10.044-13.042-4.490.57813.636NA
 us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease dei:LegalEntity,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:ElectricServiceUtilityOperations▃▁▁█0.037-0.184-0.2160.563NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:DepreciationDepletionAndAmortization ▅▅▅▄▄▄▄▄▁▆▆▅▅▅▅▅▅▅▅▅▅▅▆▆▆▆▄▆▆▆▆▅▅▅▅▅▆▆▅▅▅▅█▃▃9.779.569.669.3489.0318.8118.9049.0066.65510.83210.63110.11810.019.6669.8479.8549.6479.6839.9729.4869.6019.79110.43710.51210.53610.5489.46910.54910.52510.5310.7539.7539.7689.81610.25810.2310.40710.499.529.5549.5389.73712.2848.3978.365
us-gaap:IncreaseDecreaseInAccountsPayable █▂▅▅▆▃▃▅▇▂▆▅▅▂▄▆▄▅▄▃▇▃▃▆▆▃▂▆▅▄▁▆▆▅▁█▅▅▂▁█▄▂▆9.533-7.2672.6912.6844.085-4.112-2.2921.966.214-6.1313.391.3652.49-5.963-0.9794.389-0.541.488-1.897-4.1025.648-3.091-3.2573.4253.276-2.765-7.0724.4311.649-0.63-7.5553.3913.752.229-8.6818.5531.6832.745-5.028-7.5089.4940.089-5.4273.614NA
us-gaap:IncreaseDecreaseInAccountsReceivable ▇▂▃▆▆▆▁▆▇▂▂▅▇▁▃▆█▂▃▅▆▃▃▅▅▃▁▅▆▃▂▅█▃▁▇▅▄▂▅▇▄▃▆7.798-5.711-1.4874.2456.4294.085-7.0444.0336.884-5.755-6.2673.557.578-6.743-3.0124.27510.505-4.097-2.7212.7064.39-2.625-2.9473.0962.732-1.958-7.3241.4385.535-3.628-6.1923.15910.337-1.998-7.8916.9263.649-0.911-4.4871.9236.927-0.609-2.9145.031NA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▁▃▆█▅▁▆▇▁▅▄16.46824.67634.32741.5830.60915.65432.5639.63715.28729.3828.369NANANANANANANANANANANANANANANANANANANANANANANA9.91527.64237.34726.5917.5329.69812.1820.75916.637.593NA
us-gaap:NetIncomeLoss █▅▅█▇▃▄██▃▃▆▄▂▃▆▆▃▂▆▄▂▃▆▄▃▃▆▄▂▃▆▄▃▂▅▄▂▁▄▄▁▂▁26.57619.26820.21126.5325.61214.07216.728.00626.78412.85213.78922.95216.34810.78212.86821.00622.79212.70111.21221.63916.74210.1511.60821.07915.64812.14913.51221.17115.35411.02111.7820.83916.60213.46510.29118.66415.07810.1156.70915.59915.9627.5899.086.652NA
us-gaap:ShareBasedCompensation ▃█▁▂▂▇▁▂▂█▂█▃▄▃▃▃▅▃▃▃▄▃▄▃▄▂▃▃▄▂▃▃▃▃▂▃▃▂▂▃▂▂▂0.4491.93-0.0110.3470.2831.8440.0490.2890.1811.9980.2032.0110.6390.9980.5820.6690.6041.030.5730.5050.6740.7860.6370.7960.4680.8530.2610.5620.5940.8050.2980.5760.4740.6610.4540.3070.6280.5420.2750.2760.5670.4020.2450.285NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▄▄▆█▆▁█▂▂▃-39.103-36.98-36.973-32.154-29.106-33.377-42.523-29.803-40.52-40.349-39.285NANANANANANANANANANANANANANANANANANANANANANANA-19.936-18.657-14.476-14.967-16.491-25.7019.132-17.474-20.645-19.326NA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity awr:GoldenStateWaterCompany█▁▅▆▆▄▂▆▃▂▃-20.034-43.715-30.155-27.998-27.639-31.892-39.759-28.036-37.493-38.9-37.166NANANANANANANANANANANANANANANANANANANANANANANA-19.601-18.437NANA-16.349-25.374NANANANANA
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity,us-gaap:StatementBusinessSegments awr:BearValleyElectricServiceInc,awr:ElectricServiceUtilityOperations▁▄▁█-6.416-4.782-6.3-3.039NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment █▇▇▆▅▆█▅███▅▅▅▇▆▃▄▅▆▇▅▄▄▂▂▂▂▁▃▅▅▃▂▂▂▁▁▂▄39.05437.09335.59932.23729.04333.54440.85229.93340.59340.56239.23328.54628.41830.36435.2332.021.90223.99429.9634.57335.8829.45427.47525.64116.81717.3918.83918.09415.08920.53128.3227.8722.76418.42519.93518.72214.4814.96716.70726.279NANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▁█▂▄▆▄▃▇▄▆21.043-17.48231.256-7.7954.56416.8180.899-0.95224.9055.67216.081NANANANANANANANANANANANANANANANANANANANANANANA-9.5598.166-3.514-6.38-4.939-10.044-13.042-4.490.57813.636NA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA-0.009NANANANANANANANANANANANANANANANANANANANANANANA14.8460.0NANA0.00.0NANA-0.6262.768NANA0.001-0.003NANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity awr:GoldenStateWaterCompanyNANA-0.009NANANANANANANANANANANANANANANANANANANANANANANA14.8460.0NANA0.00.0NANA-0.6262.768NANA0.001-0.003NANANANANA
us-gaap:RepaymentsOfLongTermDebt ▆▁▁▁▁▁▁▁▁█▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▄▁▁▂▁▁▁▂▁▁▁▁▁▅▁▁▁28.0570.0990.0010.1250.1180.0920.00.1250.11440.0860.00.1290.1080.0890.0090.1290.1080.0830.0080.1360.0920.0770.0090.0590.10.0696.00915.1040.0980.0763.1090.2560.0870.0228.0090.060.1690.0650.0760.02522.2090.070.3890.029NA
us-gaap:PaymentsOfDividends ████▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▃▃▃▃▁▁▁▁▁▁▁▁12.36612.36112.35812.35611.2511.24211.23611.23410.11910.11310.10610.1029.3679.3629.3539.3498.8618.8548.858.28.28.1818.1938.38.08.1558.188.27.97.8467.847.86.86.8386.8236.75.35.2775.2465.25.24.8494.8414.834NA
 us-gaap:Dividends dei:LegalEntity awr:BearValleyElectricServiceIncNANA12.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Dividends dei:LegalEntity,us-gaap:StatementEquityComponents awr:GoldenStateWaterCompany,us-gaap:RetainedEarningsUnappropriatedNANANA71.344NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity awr:GoldenStateWaterCompanyNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotePayable956PercentDue2031NA9.56e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable3.45PercentDue2029NANA3.45e-06NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANA3.4500000000000005e-083.4500000000000005e-08NANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable5.5PercentDue2026NANA5.5e-06NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable5.87PercentDue2028NANA5.87e-06NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable6.59PercentDue2029NANA6.59e-06NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable6.81PercentDue2028NANA6.81e-06NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable6PercentDue2041NANA6e-06NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable7.23PercentDue2031NANA7.23e-06NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable7.875PercentDue2030NANA7.875e-06NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType awr:GoldenStateWaterCompany,awr:NotesPayable9.56PercentDue2031NANA9.56e-06NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType awr:GoldenStateWaterCompany,awr:NotePayable2.17PercentDue2030,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity,us-gaap:LongtermDebtType,us-gaap:SubsequentEventType awr:GoldenStateWaterCompany,awr:NotePayables2.9PercentDue2040,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotePayable2.17PercentDue2030NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotePayable29PercentDue2040NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable217PercentDue2030NANA2.17e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable290PercentDue2040NANA2.8999999999999998e-06NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable3.45PercentDue2029NANA3.45e-06NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANA3.4500000000000005e-08NANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable5.5PercentDue2026NANA5.5e-06NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANANA5.5e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable5.87PercentDue2028NANA5.87e-06NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANANA5.87e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable6.59PercentDue2029NANA6.59e-06NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANANA6.59e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable6.81PercentDue2028NANA6.81e-06NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANANA6.81e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable6PercentDue2041NANA6e-06NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANANA6e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable7.23PercentDue2031NANA7.23e-06NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANANA7.23e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable7.875PercentDue2030NANA7.875e-06NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANANA7.875e-08NANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType awr:NotesPayable9.56PercentDue2031NANA9.56e-06NANANA9.560000000000001e-089.560000000000001e-089.560000000000001e-089.560000000000001e-089.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANANA9.560000000000001e-08NANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value258257256256256255255255254254253253251250250249248247247246245244245244247251253253254254253252503499498494473469466462458454
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.014.414.314.915.115.415.615.916.316.716.917.317.417.617.716.817.016.716.817.117.417.918.217.918.418.418.419.219.219.119.418.738.338.838.938.337.837.737.738.738.338.2

us-gaap:CommonStockValue dei:LegalEntity

awr:GoldenStateWaterCompany


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value356355354294294294293293293293292244242241242241240240240239238238238237236235235234233233233232231231231230229228
Percentage of CommonStockValue138.0138.1138.3114.9114.9114.9114.9115.0115.1115.2115.396.696.696.796.896.997.097.297.397.397.497.497.597.095.693.893.192.491.991.992.092.146.146.346.446.648.549.1
Percentage of Assets19.319.819.817.117.317.717.918.318.719.219.516.716.817.017.116.316.516.216.416.617.017.417.717.417.617.217.117.717.617.517.817.217.717.918.117.818.318.5
Percentage of Assets awr:GoldenStateWaterCompany22.422.822.719.618.819.119.319.820.320.821.017.918.118.318.317.217.517.217.417.618.018.418.718.218.418.418.419.319.019.118.918.218.618.919.119.019.519.5

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value36363636363636363636363636363636363838190.0187890.0186310.0185320.017301
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

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

us-gaap:CommonStockSharesOutstanding

awr:GoldenStateWaterCompany, us-gaap:CommonStock


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.000170.0001650.0001650.0001460.000146
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3636363636
Percentage of CommonStockSharesOutstanding21699411.822331515.222277575.825123972.625048630.1

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value37363737363636363636363636363636363737383839383838383837373737373737
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value36363636363636363636363636363636363737383838383838383837373737373737
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.720.520.550.720.690.380.450.760.720.350.370.620.440.290.350.570.620.350.310.590.460.280.320.570.410.320.350.540.390.280.30.540.4250.3450.2650.4850.3950.2650.180.4150.4250.20.2450.180.24
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.720.520.540.720.690.380.450.760.720.350.370.620.440.290.350.570.620.340.30.590.450.280.310.560.410.320.350.540.390.280.30.530.4250.3450.260.4850.3950.2650.1750.4150.4250.20.2450.1750.24
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value9086938583918581
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.0

us-gaap:CostsAndExpenses dei:LegalEntity

awr:GoldenStateWaterCompany


Costs
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value6053656460706160
Percentage of CostsAndExpenses67.262.269.875.572.376.672.273.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.0

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value202219202022212019212021202019212020191921202019201918201920212018171817171619181818252616
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense dei:LegalEntity

awr:GoldenStateWaterCompany


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1314131315161415131615161515141616151415161616151715151716161817151416141513161514
Percentage of GeneralAndAdministrativeExpense67.265.567.365.977.173.470.473.770.074.375.475.975.174.673.677.378.275.476.880.179.979.580.981.483.179.781.685.584.684.286.184.783.779.588.684.286.682.685.182.981.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value34253533173734161729201318333719173426151735252021342517173027221631241711262212121115
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments dei:LegalEntity

awr:GoldenStateWaterCompany


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
Value261515282814143129119.415231711122830179.8382822141228211714272315132623189.0532418139.2112217
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments79.163.50.081.083.380.30.084.984.168.952.678.186.182.566.884.082.287.056.684.283.690.470.479.986.488.067.478.290.786.675.887.484.580.955.379.176.074.082.184.780.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7.4625.9146.979.0458.2813.9014.1249.4057.8313.314.1276.9394.3872.5645.30412146.8556.15812105.8135.905149.5347.8987.95313106.3575.4819.905119.2496.074129.8097.6264.508109.4145.5134.735.8786.499
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity

awr:GoldenStateWaterCompany


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
Value5.9573.7683.4847.6837.3093.2282.8488.3836.8262.121.865.4144.2142.1154.82410126.2733.406118.7225.444.316128.87.2475.499119.7835.7055.577109.6437.6633.148107.5675.7553.8249.2127.699
Percentage of IncomeTaxExpenseBenefit79.863.750.084.988.382.769.189.187.264.045.178.096.182.591.086.484.991.555.386.986.793.673.184.192.391.869.181.895.389.7101.8103.586.582.951.880.777.175.584.886.681.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:AmericanStatesUtilityServices, srt:ReportableLegalEntities, awr:ContractedServices


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value1.2711.3911.151.3010.7481.3911.31.1251.6060.705
Percentage of IncomeTaxExpenseBenefit17.023.512.715.719.214.816.634.023.116.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices srt:ReportableLegalEntities awr:ContractedServices0.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, srt:ReportableLegalEntities, awr:ElectricServiceUtilityOperations


Income
Period End2021-06-302021-03-312020-09-30
Value0.4580.8840.533
Percentage of IncomeTaxExpenseBenefit6.114.95.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc srt:ReportableLegalEntities awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, srt:ReportableLegalEntities, awr:WaterServiceUtilityOperations


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value5.9573.7687.6836.972.3786.726.8121.6735.2473.909
Percentage of IncomeTaxExpenseBenefit79.863.784.984.261.071.587.050.575.689.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany srt:ReportableLegalEntities awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

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

srt:ParentCompany, us-gaap:IntersegmentElimination


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-0.224-0.129-0.321-0.329-0.075-0.369-0.2950.065-0.081-0.532
Percentage of IncomeTaxExpenseBenefit-3.0-2.2-3.5-4.0-1.9-3.9-3.82.0-1.2-12.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax srt:ParentCompany us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value6.0326.2584.9986.1615.3226.055.7086.2796.2826.3175.5145.9486.0485.9234.9765.7755.9265.9055.0365.735.6035.6234.8495.4845.5275.2284.6935.5195.7785.6275.0175.8525.7685.7784.9576.0185.726.074.8746.1946.8695.7445.1454.9635.87
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense dei:LegalEntity

awr:GoldenStateWaterCompany


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
Value5.6435.7984.635.9115.1775.7775.4145.9866.0015.9985.2245.7815.8575.7594.8855.6385.7755.7574.9535.6735.5865.574.7655.4995.5165.2184.6835.5095.7215.6114.9985.8155.7265.7484.9615.9595.686.0094.8566.1386.685
Percentage of InterestExpense93.692.692.695.997.395.594.895.395.595.094.797.296.897.298.297.697.597.598.499.099.799.198.3100.399.899.899.899.899.099.799.699.499.399.5100.199.099.399.099.699.197.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Income Expense Nonoperating Net

us-gaap:InterestIncomeExpenseNonoperatingNet

us-gaap:InterestIncomeExpenseNonoperatingNet


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
Value-5.684-5.80336-5.845-4.832-5.49237-5.453-5.406-5.37535-5.307-5.412-5.38737-5.454-5.306-5.64637-5.524-5.413-5.45136-5.366-5.425-5.11637-5.295-5.655-5.51538-5.667-5.628-5.591-4.753-5.599-5.225-5.855-4.515-5.992-6.708
Percentage of InterestIncomeExpenseNonoperatingNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNonoperatingNet dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

awr:AmericanStatesUtilityServices, srt:ReportableLegalEntities, awr:ContractedServices


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.0880.2290.0740.220.0770.1440.219-0.361-0.118-0.071
Percentage of InterestIncomeExpenseNonoperatingNet-1.5-3.9-1.3-4.6-1.4-2.6-4.16.72.21.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices srt:ReportableLegalEntities awr:ContractedServices0.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, srt:ReportableLegalEntities, awr:ElectricServiceUtilityOperations


Interest
Period End2021-06-302021-03-312020-09-30
Value-0.088-0.086-0.054
Percentage of InterestIncomeExpenseNonoperatingNet1.51.50.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc srt:ReportableLegalEntities awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, srt:ReportableLegalEntities, awr:WaterServiceUtilityOperations


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-5.464-5.711-5.806-4.857-5.133-5.206-5.112-5.237-5.039-5.047
Percentage of InterestIncomeExpenseNonoperatingNet96.198.499.3100.593.595.594.697.495.093.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany srt:ReportableLegalEntities awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNonoperatingNet us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, us-gaap:IntersegmentElimination


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.220.2350.059-0.056-0.11-0.157-0.1670.1460.0950.083
Percentage of InterestIncomeExpenseNonoperatingNet-3.9-4.0-1.01.22.02.93.1-2.7-1.8-1.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax srt:ParentCompany us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value26192026251416282612132216101221221211211610112115121321151111201613101815106.70915157.5899.086.652
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2012112120111123229.0227.55517138.897.3091718106.43217138.9848.0141612108.97516139.3477.511613105.90514117.3825.3871310
Percentage of NetIncomeLoss78.963.557.979.781.779.671.783.483.370.254.878.183.582.556.882.580.684.657.482.681.788.569.077.182.885.566.475.987.684.863.879.783.279.557.478.175.373.080.383.562.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.3022.5232.5621.3081.063
Percentage of NetIncomeLoss4.913.112.74.94.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:ElectricServiceUtilityOperations


Net
Period End2020-09-302020-06-302020-03-31
Value3.7791.0632.346
Percentage of NetIncomeLoss14.24.216.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:ElectricServiceUtilityOperations0.00.00.0

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

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Net
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2012201123229.02217138.89
Percentage of NetIncomeLoss78.963.581.779.683.483.370.278.183.582.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsUnappropriated


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2619262514282612221610
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value26192026251416272612132216101220221211211610112015121321151011201613101814106.6571515
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value26192026251416272612132216101220221211211610112115121321151011201613101814106.6711515
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-3809000.0-5147000.0-2096000.0-4232000.0-1823000.0-7726000.0-3900000.0-5313000.0-4815000.0-4033000.0-4833000.0-4084000.0-4833000.0-5345000.0-3783000.0-5053000.0-4717000.0-5182000.0-4722000.0-5270000.0-4976000.0-5270000.0-4371000.0-5712000.0-5348000.0-4843000.0-3917000.0-5248000.0-5384000.0-5390000.0-4390000.0-5420000.0-5544000.0-5249000.0-4757000.0-5380000.0-5238000.0-5626000.0-4332000.0-6162000.0-6997000.0-5527000.0-3629000.0-5350000.0-5781000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonoperatingIncomeExpense dei:LegalEntity

awr:GoldenStateWaterCompany


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-3860000.0-5060000.0-2289000.0-4323000.0-1947000.0-7662000.0-3917000.0-5237000.0-4913000.0-4185000.0-4665000.0-4207000.0-4783000.0-5292000.0-3691000.0-4919000.0-4567000.0-5055000.0-4639000.0-5218000.0-5165000.0-5219000.0-4290000.0-5729000.0-5486000.0-4841000.0-3917000.0-5248000.0-5336000.0-5378000.0-4418000.0-5420000.0-5501000.0-5228000.0-4734000.0-5356000.0-5225000.0-5570000.0-4318000.0-6160000.0-7007000.0
Percentage of NonoperatingIncomeExpense101.398.3109.2102.2106.899.2100.498.6102.0103.896.5103.099.099.097.697.396.897.598.299.0103.899.098.1100.3102.6100.0100.0100.099.199.8100.6100.099.299.699.599.699.899.099.7100.0100.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value373029393525244239202233251821384124223931212141302425393122213633272136302315322917161621
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss dei:LegalEntity

awr:GoldenStateWaterCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3021173330221836341514272216153335221434271916342722183228201732282313292418132824
Percentage of OperatingIncomeLoss81.369.459.783.384.586.075.886.686.375.961.981.188.687.272.185.783.989.265.586.286.792.575.982.889.290.372.581.192.289.780.989.387.084.465.382.180.280.187.087.684.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:AmericanStatesUtilityServices, srt:ReportableLegalEntities, awr:ContractedServices


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value5.2785.8244.7945.5433.6095.7455.3954.876.4372.925
Percentage of OperatingIncomeLoss13.919.212.015.514.013.413.724.118.911.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices srt:ReportableLegalEntities awr:ContractedServices0.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, srt:ReportableLegalEntities, awr:ElectricServiceUtilityOperations


Operating
Period End2021-06-302021-03-312020-09-30
Value1.7953.4481.865
Percentage of OperatingIncomeLoss4.711.44.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc srt:ReportableLegalEntities awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, srt:ReportableLegalEntities, awr:WaterServiceUtilityOperations


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value30213328183133132621
Percentage of OperatingIncomeLoss81.369.483.380.272.473.384.365.778.683.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany srt:ReportableLegalEntities awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

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

srt:ParentCompany, us-gaap:IntersegmentElimination


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value-0.003-0.002-0.001-0.002-0.002-0.003-0.002-0.002-0.002-0.002
Percentage of OperatingIncomeLoss-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax srt:ParentCompany us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1875000.0656000.02465000.01613000.03009000.0-2234000.01203000.0140000.0591000.01342000.0-1084000.01223000.0579000.042000.0603000.0401000.0589000.0464000.0125000.0254000.0437000.0181000.0352000.0-346000.077000.0273000.0308000.047000.0271000.0125000.0432000.0247000.084000.0342000.0-4000.0219000.0-13000.0229000.0183000.0-170000.0-289000.080000.095000.0-553000.0-69000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherNonoperatingIncomeExpense dei:LegalEntity

awr:GoldenStateWaterCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1604000.0651000.02227000.01483000.03049000.0-2203000.01127000.0203000.0545000.01405000.0-1043000.01123000.0617000.087000.0603000.0401000.0588000.0465000.0125000.0255000.0231000.0181000.0351000.0-345000.0-67000.0273000.0308000.047000.0272000.0124000.0431000.0247000.085000.0342000.0-3000.0219000.0-14000.0229000.0176000.0-171000.0-477000.0
Percentage of OtherNonoperatingIncomeExpense85.599.290.391.9101.398.693.7145.092.2104.796.291.8106.6207.1100.0100.099.8100.2100.0100.452.9100.099.799.7-87.0100.0100.0100.0100.499.299.8100.0101.2100.075.0100.0107.7100.096.2100.6165.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Regulated Operating Revenue

us-gaap:RegulatedOperatingRevenue dei:LegalEntity, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:RegulatedOperatingRevenue

awr:BearValleyElectricServiceInc, awr:Alternativerevenuesprogram, awr:ElectricServiceUtilityOperations


Regulated
Period End2021-06-302021-03-312020-09-30
Value0.2660.340.431
Percentage of RegulatedOperatingRevenue100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:Alternativerevenuesprogram awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, awr:Alternativerevenuesprogram, awr:WaterServiceUtilityOperations


Regulated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value-3.4480.310.1218.3570.9413.744
Percentage of RegulatedOperatingRevenue-1296.291.228.10.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:Alternativerevenuesprogram awr:WaterServiceUtilityOperations0.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

awr:AmericanStatesUtilityServices, awr:Wastewater, awr:ContractedServices


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
Value9.90811119.55613111313141317118.0947.484
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices awr:Wastewater awr:ContractedServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:AmericanStatesUtilityServices, us-gaap:PublicUtilitiesInventoryWater, awr:ContractedServices


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
Value1818291713141813141318161413
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax189.4162.7266.7179.4103.2122.7132.4102.5101.0102.5102.8144.4175.8173.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices us-gaap:PublicUtilitiesInventoryWater awr:ContractedServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, awr:SurchargesCostrecoveryActivities, awr:ElectricServiceUtilityOperations


Revenue
Period End2021-06-302021-03-312020-09-30
Value0.0440.2020.188
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.41.72.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:SurchargesCostrecoveryActivities awr:ElectricServiceUtilityOperations0.00.00.0

awr:BearValleyElectricServiceInc, awr:TariffbasedRevenues, awr:ElectricServiceUtilityOperations


Revenue
Period End2021-06-302021-03-312020-09-30
Value8.33118.531
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax84.1100.689.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:TariffbasedRevenues awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, awr:OtherProductsandServices, awr:WaterServiceUtilityOperations


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
Value0.5230.5170.5440.5690.4910.4950.5310.5550.4610.4590.4320.4860.4530.442
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.34.54.96.03.84.13.94.13.23.52.44.25.65.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:OtherProductsandServices awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:SurchargesCostrecoveryActivities, awr:WaterServiceUtilityOperations


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
Value0.9750.5340.8231.2170.9620.7341.3681.90.7630.2910.5040.9370.7280.793
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.84.67.412.77.46.110.014.15.32.22.98.09.010.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:SurchargesCostrecoveryActivities awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:TariffbasedRevenues, awr:WaterServiceUtilityOperations


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
Value8674869777697989765975877065
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax874.9639.9776.51015.4591.9577.9583.6661.9530.9457.4428.5744.8867.9878.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:TariffbasedRevenues awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc, awr:SurchargesCostrecoveryActivities, awr:ElectricServiceUtilityOperations


Revenue
Period End2020-12-31
Value0.062
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc awr:SurchargesCostrecoveryActivities awr:ElectricServiceUtilityOperations0.0

awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc, awr:TariffbasedRevenues, awr:ElectricServiceUtilityOperations


Revenue
Period End2020-12-31
Value9.335
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax84.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc awr:TariffbasedRevenues awr:ElectricServiceUtilityOperations0.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity, us-gaap:StatementBusinessSegments

awr:AmericanStatesUtilityServices, awr:ContractedServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value28304026262631272926352822202628283034342529202121
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax289.4262.7366.7279.4203.2222.7232.4202.5201.0202.5202.8244.4275.8273.70.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices awr:ContractedServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Revenue
Period End2021-06-302021-03-312020-09-30
Value8.374118.719
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax84.5102.391.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, awr:WaterServiceUtilityOperations


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
Value8875879878708191786076887167
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax890.0649.0788.81034.1603.1588.1597.5680.1539.4463.1433.8756.9882.5895.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Revenue
Period End2020-12-31
Value9.397
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax84.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value128117124133121109112134124101111124106941041241139810612311193110132114100109138115101109130120110112133114106951191099410311195
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues dei:LegalEntity

awr:GoldenStateWaterCompany


Revenuesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value91757398948281107957575958474759988767498887681105958279105948183102927977998977759887
Percentage of Revenues71.464.159.173.878.175.571.979.776.774.167.877.079.178.472.180.378.077.869.679.879.382.273.979.183.381.772.876.181.879.775.878.576.672.369.274.378.172.279.382.080.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:AmericanStatesUtilityServices, srt:ReportableLegalEntities, awr:ContractedServices


Revenuesdei:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value28302626262729262822
Percentage of Revenues22.326.020.021.924.520.323.325.923.020.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:AmericanStatesUtilityServices srt:ReportableLegalEntities awr:ContractedServices0.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, srt:ReportableLegalEntities, awr:ElectricServiceUtilityOperations


Revenuesdei:
Period End2021-06-302021-03-312020-09-30
Value8.108118.288
Percentage of Revenues6.39.96.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc srt:ReportableLegalEntities awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, srt:ReportableLegalEntities, awr:WaterServiceUtilityOperations


Revenuesdei:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value91759887719588648776
Percentage of Revenues71.464.173.871.865.570.870.763.670.671.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany srt:ReportableLegalEntities awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Revenuesdei:
Period End2021-06-302021-03-312020-09-30
Value8.108118.288
Percentage of Revenues6.39.96.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.0

awr:GoldenStateWaterCompany, awr:WaterServiceUtilityOperations


Revenuesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value91757398877171958864668776647293846968908066668980
Percentage of Revenues71.464.159.173.871.865.563.570.870.763.659.870.671.868.066.371.869.762.660.967.970.862.169.774.773.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Revenuesdei:
Period End2020-12-31
Value10
Percentage of Revenues8.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value184217921791172616971660164116041567152615011465144114231416148614621480147014401406136813481362134313671378132613271333131013511312128912801289125212461238119511971192
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

awr:GoldenStateWaterCompany


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
Value15931561156015051567153815221481144614101389136413411324132614051377139313841358132812961276130212821281128212161229122512331274124812261214121211801173
Percentage of Assets86.587.187.187.292.392.792.892.492.392.492.593.293.193.093.794.594.294.294.194.394.594.794.795.695.593.793.091.792.691.994.194.395.195.194.894.094.294.8
Percentage of Assets86.587.187.187.292.392.792.892.492.392.492.593.293.193.093.794.594.294.294.194.394.594.794.795.695.593.793.091.792.691.994.194.395.195.194.894.094.294.8
Percentage of Assets awr:GoldenStateWaterCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value759811659
Percentage of Assets42.449.543.9
Percentage of Assets42.449.543.9
Percentage of Assets srt:ParentCompany100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value184217921791172616971660164116041567152615011465144114231416148614621480147014401406136813481362134313671378132613271333131013511312128912801289125212461238119511971192
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

awr:GoldenStateWaterCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value15931561156015051567153815221481144614101389136413411324132614051377139313841358132812961276130212821281128212161229122512331274124812261214121211801173
Percentage of LiabilitiesAndStockholdersEquity86.587.187.187.292.392.792.892.492.392.492.593.293.193.093.794.594.294.294.194.394.594.794.795.695.593.793.091.792.691.994.194.395.195.194.894.094.294.8
Percentage of Assets86.587.187.187.292.392.792.892.492.392.492.593.293.193.093.794.594.294.294.194.394.594.794.795.695.593.793.091.792.691.994.194.395.195.194.894.094.294.8
Percentage of Assets awr:GoldenStateWaterCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-31
Value759811659
Percentage of LiabilitiesAndStockholdersEquity42.449.543.9
Percentage of Assets42.449.543.9
Percentage of Assets srt:ParentCompany100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value664649641633619604601595578561558554539531529525513497494490476467465470477497506510495495492486465461454448426415408405377359310
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.036.235.836.736.536.436.637.136.936.837.237.837.437.337.435.435.133.633.634.133.934.134.634.535.636.436.838.537.337.237.636.035.435.835.534.834.133.333.033.931.70.00.0

us-gaap:StockholdersEquity dei:LegalEntity

awr:GoldenStateWaterCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-312009-12-31
Value592583583511561551551539515503503488478473474475476457446448429423423432433432435438434433437436427419416408394384358331
Percentage of StockholdersEquity89.389.990.980.790.691.291.690.589.189.690.288.188.789.189.590.592.891.890.491.390.290.790.991.990.787.085.985.987.887.588.989.791.891.091.691.192.394.294.992.2
Percentage of Assets32.232.632.629.633.133.233.633.632.933.033.533.333.233.333.532.032.630.930.431.130.631.031.431.732.231.631.633.032.732.533.432.332.632.632.531.731.531.130.10.0
Percentage of Assets awr:GoldenStateWaterCompany37.237.437.434.035.835.836.236.435.635.736.235.835.735.835.833.934.632.832.333.032.432.733.233.233.833.833.936.035.435.435.534.334.234.234.333.733.432.80.00.0

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

awr:GoldenStateWaterCompany, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value356355354294294294293293293293292244242241242240238235233231228217195
Percentage of StockholdersEquity53.654.855.346.547.548.648.849.350.752.252.444.245.045.545.748.751.246.547.550.956.057.554.5
Percentage of Assets19.319.819.817.117.317.717.918.318.719.219.516.716.817.017.116.417.717.117.818.118.518.20.0
Percentage of Assets awr:GoldenStateWaterCompany us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value236228228216266257257245222210211243235231232206184199203184155141135
Percentage of StockholdersEquity35.635.135.634.243.142.642.841.238.437.437.844.043.743.643.841.739.739.441.440.638.137.437.8
Percentage of Assets12.812.712.712.615.715.515.715.314.213.814.116.616.416.316.414.013.714.515.614.412.611.80.0
Percentage of Assets awr:GoldenStateWaterCompany us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-31
Value641601558
Percentage of StockholdersEquity100.0100.0100.0
Percentage of Assets35.836.637.2
Percentage of Assets srt:ParentCompany84.574.184.7

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value258257256256256255255255254254253253251250250247245253253249233227223185
Percentage of StockholdersEquity38.939.740.040.541.442.342.542.944.145.345.445.746.647.147.250.052.650.051.654.857.160.262.159.7
Percentage of Assets14.014.414.314.915.115.415.615.916.316.716.917.317.417.617.716.818.218.419.419.518.819.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarningsUnappropriated


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value406391385377363348345340323307304300288281279247220253238205175150136125
Percentage of StockholdersEquity61.160.360.059.558.657.757.557.155.954.754.654.353.452.952.850.047.450.048.445.242.939.837.940.3
Percentage of Assets22.021.921.521.821.421.021.121.220.720.120.320.520.019.819.816.816.418.418.216.014.212.60.00.0
Percentage of Assets us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value136118157139137127122132122116131134141145155146149192166136132131132135150189209186197213191202181173184187175171165160172204
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.46.68.88.18.17.77.58.37.87.78.89.29.810.211.09.910.213.011.39.59.49.69.89.911.213.915.214.114.916.014.615.013.813.514.414.514.013.813.413.414.417.2

us-gaap:AssetsCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value7863105848683797968657985868710196961371128785878910311312913899120124135143129124129126117115
Percentage of AssetsCurrent57.453.667.060.863.065.465.260.255.956.460.663.461.060.465.165.964.671.567.364.264.566.967.876.675.268.166.253.161.058.470.571.071.371.370.667.466.669.8
Percentage of Assets4.23.65.94.95.15.04.95.04.44.35.35.86.06.27.16.56.69.37.66.16.16.46.77.68.49.410.17.59.19.310.310.79.89.610.19.89.49.3
Percentage of Assets awr:GoldenStateWaterCompany4.94.16.75.65.55.45.25.44.74.75.76.36.46.67.66.97.09.98.16.56.46.87.08.08.810.110.88.29.810.211.011.310.310.110.710.49.99.8

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-31
Value3318576
Percentage of AssetsCurrent21.2151.457.9
Percentage of Assets1.911.35.1
Percentage of Assets srt:ParentCompany4.422.811.5

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-31
Value5.3596.951368.1276.4960.4291.334101.5161.8447.1411.9765.5575.9840.2146.6612.1240.6210.4362.7894.5188.4574.3642743747557777438268.525322343256.5581.3155.215112.3714.1977.6926.6031.557
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.42.10.50.40.00.10.60.10.10.50.10.40.40.00.40.10.00.00.20.30.60.32.03.35.55.54.45.95.62.91.90.62.51.83.32.10.50.10.40.90.00.40.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue dei:LegalEntity

awr:GoldenStateWaterCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value4.6592.452354.0731.4460.4310.4014.4530.5410.5244.1870.1533.1232.2610.2146.2541.5440.1870.2092.3470.4113.4862.5011939414427434337257.9893222256.7994.5950.0
Percentage of CashAndCashEquivalentsAtCarryingValue86.935.396.850.122.3100.530.142.835.728.458.67.756.237.8100.093.972.730.147.984.29.141.257.370.891.056.257.947.955.558.199.198.393.798.096.159.326.270.10.0
Percentage of Assets0.30.12.00.20.10.00.00.30.00.00.30.00.20.20.00.40.10.00.00.20.00.30.21.43.03.13.22.13.33.32.91.90.62.51.82.00.50.40.0
Percentage of Assets awr:GoldenStateWaterCompany0.30.22.30.30.10.00.00.30.00.00.30.00.20.20.00.40.10.00.00.20.00.30.21.53.13.33.42.33.53.63.12.00.62.61.92.10.60.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.4410.310.0340.0480.032
Percentage of CashAndCashEquivalentsAtCarryingValue1.223.20.522.47.3
Percentage of Assets0.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.10.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents dei:LegalEntity, us-gaap:StatementBusinessSegments

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-07-01
Value220000.0183000.0367000.0583000.020000.0
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value282229333024202824172329261926292515192220161822191618262519233027171928221820252317
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.21.62.01.81.51.31.81.51.11.62.01.81.41.82.01.71.01.41.61.51.21.41.61.41.21.42.01.91.51.82.22.11.31.52.21.81.51.62.11.91.5

us-gaap:AccountsReceivableNetCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value2619263130242028241723292619262925151922201618221916182625192330271719282220
Percentage of AccountsReceivableNetCurrent93.789.592.394.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.11.51.91.81.51.31.81.51.11.62.01.81.41.82.01.71.01.41.61.51.21.41.61.41.21.42.01.91.51.82.22.11.31.52.21.81.6
Percentage of Assets awr:GoldenStateWaterCompany1.71.31.72.11.91.61.41.91.71.21.72.22.01.52.02.11.81.11.41.71.51.21.51.71.51.31.52.22.01.61.92.42.21.41.62.41.91.7

Inventory Raw Materials And Supplies

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:InventoryRawMaterialsAndSupplies


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8773000.08751000.08619000.08699000.08168000.07343000.06429000.06090000.06189000.05892000.05775000.05622000.05364000.04601000.04795000.05377000.05148000.04817000.04294000.04733000.05294000.05180000.05415000.05874000.04152000.03904000.03588000.03923000.03671000.04319000.04558000.05186000.06120000.07210000.05348000.06578000.04958000.04797000.03070000.02817000.02487000.02161000.0
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.50.50.40.40.40.40.40.40.40.40.30.30.40.40.30.30.30.40.40.40.40.30.30.30.30.30.30.30.40.50.60.40.50.40.40.20.20.20.2

us-gaap:InventoryRawMaterialsAndSupplies dei:LegalEntity

awr:GoldenStateWaterCompany


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value3833000.03926000.03659000.03661000.07054000.05708000.04920000.05053000.05032000.04681000.04797000.04674000.04153000.03949000.04046000.04615000.04437000.04030000.03724000.04136000.04447000.04345000.04860000.05264000.03420000.03224000.02791000.02465000.02472000.02228000.01859000.02056000.02277000.02324000.02244000.02457000.02105000.01926000.0
Percentage of InventoryRawMaterialsAndSupplies43.744.942.542.186.477.776.583.081.379.483.183.177.485.884.485.886.283.786.787.484.083.989.889.682.482.677.862.867.351.640.839.637.232.242.037.442.562.7
Percentage of Assets0.20.20.20.20.40.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.30.20.20.20.20.20.10.20.20.20.20.20.20.2
Percentage of Assets awr:GoldenStateWaterCompany0.20.30.20.20.50.40.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.30.30.20.20.20.20.20.20.20.20.20.20.20.2

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8.365105.5556.5418.0039.4175.4136.4437.0058.3516.0636.9156.7698.7835.5965.2484.9515.2373.7354.4664.6195.4533.2293.9314.1345.8532.7454.2614.5424.8762.4813.6794.1894.2514.3915.385.8225.4393.9594.8965.1276.157
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.60.30.40.50.60.30.40.40.50.40.50.50.60.40.40.30.40.30.30.30.40.20.30.30.40.20.30.30.40.20.30.30.30.30.40.50.40.30.40.40.5

us-gaap:PrepaidExpenseAndOtherAssetsCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value5.6746.6324.1144.8746.4117.2484.4975.5995.5866.455.2755.7965.5517.375.094.5944.2484.3793.524.0263.914.5462.7933.4793.4414.8642.5073.633.7333.9672.2183.2343.5953.6184.1625.0585.4743.71
Percentage of PrepaidExpenseAndOtherAssetsCurrent67.866.174.174.580.177.083.186.979.777.287.083.882.083.991.087.585.883.694.290.184.783.486.588.583.283.191.385.282.281.489.487.985.885.194.894.094.093.7
Percentage of Assets0.30.40.20.30.40.40.30.30.40.40.40.40.40.50.40.30.30.30.20.30.30.30.20.30.30.40.20.30.30.30.20.20.30.30.30.40.40.3
Percentage of Assets awr:GoldenStateWaterCompany0.40.40.30.30.40.50.30.40.40.50.40.40.40.60.40.30.30.30.30.30.30.40.20.30.30.40.20.30.30.30.20.30.30.30.30.40.50.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value214921171930204020101980183919551928189517801819178717591674171416861661162016861655161915271558153415171455149014741459139514341402137613141354133313201268129812811233
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets116.7118.1107.7118.2118.4119.2112.1121.9123.0124.2118.6124.2124.0123.6118.2115.3115.3112.2110.2117.1117.7118.3113.3114.4114.2110.9105.6112.4111.1109.4106.5106.2106.8106.8102.6105.0106.4106.0102.4108.6107.0103.4

us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity

awr:GoldenStateWaterCompany


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value19601933178418701975194618081924189818671755179517661740165816991672164716081672164316071516154715231506144414801463144913861425139313671305134613241302
Percentage of PropertyPlantAndEquipmentGross91.291.392.491.698.298.398.398.498.498.698.698.798.898.999.199.199.299.299.399.299.299.399.399.399.399.399.399.399.399.399.399.499.399.399.399.499.4102.7
Percentage of Assets106.4107.899.6108.3116.3117.2110.2119.9121.1122.4116.9122.6122.6122.3117.1114.3114.4111.3109.4116.1116.8117.4112.5113.6113.4110.2104.8111.6110.3108.7105.9105.5106.1106.0101.9104.4105.7105.2
Percentage of Assets awr:GoldenStateWaterCompany123.1123.8114.3124.2126.0126.5118.8129.8131.2132.4126.4131.6131.7131.4125.0121.0121.4118.2116.2123.2123.7124.0118.8118.8118.8117.5112.7121.7119.0118.2112.4111.8111.6111.5107.5111.1112.2111.0

us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity, us-gaap:PublicUtility, us-gaap:StatementBusinessSegments

awr:GoldenStateWaterCompany, awr:IntangibleAssets, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value28282929363434343333
Percentage of PropertyPlantAndEquipmentGross1.51.61.71.82.22.32.32.42.62.6
Percentage of Assets1.61.72.02.12.52.62.52.62.62.7
Percentage of Assets awr:GoldenStateWaterCompany awr:IntangibleAssets awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:SourceOfWaterSupply, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value92919188868680757269
Percentage of PropertyPlantAndEquipmentGross4.85.05.15.35.45.75.55.45.55.4
Percentage of Assets5.15.66.16.25.96.45.85.85.65.6
Percentage of Assets awr:GoldenStateWaterCompany awr:SourceOfWaterSupply awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:WaterPlantGeneral, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value958610610511611511010710397
Percentage of PropertyPlantAndEquipmentGross5.04.76.06.37.27.67.67.77.97.7
Percentage of Assets5.35.37.17.47.98.68.08.28.17.9
Percentage of Assets awr:GoldenStateWaterCompany awr:WaterPlantGeneral awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:WaterPumpingEquipment, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value190178182178169161155147142138
Percentage of PropertyPlantAndEquipmentGross9.99.710.310.610.510.610.710.610.811.0
Percentage of Assets10.710.812.212.611.612.011.311.211.111.2
Percentage of Assets awr:GoldenStateWaterCompany awr:WaterPumpingEquipment awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:WaterTransmissionAndDistribution, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value12771219114210641014941894856796768
Percentage of PropertyPlantAndEquipmentGross66.266.364.263.662.661.661.561.460.660.6
Percentage of Assets71.374.376.175.169.069.864.965.462.262.1
Percentage of Assets awr:GoldenStateWaterCompany awr:WaterTransmissionAndDistribution awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:WaterTreatmentEquipment, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value81788278747271706365
Percentage of PropertyPlantAndEquipmentGross4.24.24.64.74.64.74.95.14.85.1
Percentage of Assets4.54.85.55.65.15.45.25.45.05.3
Percentage of Assets awr:GoldenStateWaterCompany awr:WaterTreatmentEquipment awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, us-gaap:Land, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value18181414151515151515
Percentage of PropertyPlantAndEquipmentGross0.91.00.80.90.91.01.11.11.21.2
Percentage of Assets1.01.11.01.11.01.11.11.21.21.2
Percentage of Assets awr:GoldenStateWaterCompany us-gaap:Land awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity, us-gaap:StatementBusinessSegments

awr:GoldenStateWaterCompany, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1784170016491559151414281363130712271187
Percentage of PropertyPlantAndEquipmentGross92.492.492.793.193.593.593.793.793.493.6
Percentage of Assets99.6103.6109.9110.1103.0105.998.999.895.895.9
Percentage of Assets awr:GoldenStateWaterCompany awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PublicUtility, us-gaap:StatementBusinessSegments

awr:ElectricPlantGeneral, awr:ElectricServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value12111110109.7979.0548.4138.3498.627
Percentage of PropertyPlantAndEquipmentGross0.60.60.60.70.60.60.60.60.60.7
Percentage of Assets0.70.70.70.80.70.70.70.60.70.7
Percentage of Assets awr:ElectricPlantGeneral awr:ElectricServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:IntangibleAssets, awr:AmericanStatesUtilityServices


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0.5710.5710.5710.5710.5710.5710.6
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets awr:IntangibleAssets awr:AmericanStatesUtilityServices0.00.00.00.00.00.00.0

awr:IntangibleAssets, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value28282929363434343333
Percentage of PropertyPlantAndEquipmentGross1.51.61.71.82.22.32.32.42.62.6
Percentage of Assets1.61.72.02.12.52.62.52.62.62.7
Percentage of Assets awr:IntangibleAssets awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:SourceOfWaterSupply, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value92919188868680757269
Percentage of PropertyPlantAndEquipmentGross4.85.05.15.35.45.75.55.45.55.4
Percentage of Assets5.15.66.16.25.96.45.85.85.65.6
Percentage of Assets awr:SourceOfWaterSupply awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:WaterPlantGeneral, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value128117131120127126121116112104
Percentage of PropertyPlantAndEquipmentGross6.76.47.47.27.98.38.48.38.58.2
Percentage of Assets7.27.18.88.58.79.48.88.98.88.4
Percentage of Assets awr:WaterPlantGeneral awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:WaterPumpingEquipment, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value190178182178169161155147142138
Percentage of PropertyPlantAndEquipmentGross9.99.710.310.610.510.610.710.610.811.0
Percentage of Assets10.710.812.212.611.612.011.311.211.111.2
Percentage of Assets awr:WaterPumpingEquipment awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:WaterTransmissionAndDistribution, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value12771219114210641014941894856796768
Percentage of PropertyPlantAndEquipmentGross66.266.364.263.662.661.661.561.460.660.6
Percentage of Assets71.374.376.175.169.069.864.965.462.262.1
Percentage of Assets awr:WaterTransmissionAndDistribution awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:WaterTreatmentEquipment, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value81788278747271706365
Percentage of PropertyPlantAndEquipmentGross4.24.24.64.74.64.74.95.14.85.1
Percentage of Assets4.54.85.55.65.15.45.25.45.05.3
Percentage of Assets awr:WaterTreatmentEquipment awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:ElectricGenerationEquipment, awr:ElectricServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value12121212121212121212
Percentage of PropertyPlantAndEquipmentGross0.70.70.70.80.80.80.90.91.01.0
Percentage of Assets0.70.80.80.90.90.90.91.01.01.0
Percentage of Assets us-gaap:ElectricGenerationEquipment awr:ElectricServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:ElectricTransmissionAndDistribution, awr:ElectricServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value87848276716660585652
Percentage of PropertyPlantAndEquipmentGross4.54.64.64.54.44.34.14.24.34.2
Percentage of Assets4.95.15.55.44.84.94.44.54.44.3
Percentage of Assets us-gaap:ElectricTransmissionAndDistribution awr:ElectricServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:Land, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value18181414151515151515
Percentage of PropertyPlantAndEquipmentGross0.91.00.80.90.91.01.11.11.21.2
Percentage of Assets1.01.11.01.11.01.11.11.21.21.2
Percentage of Assets us-gaap:Land awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:StatementBusinessSegments

awr:ElectricServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value11210810699948881797773
Percentage of PropertyPlantAndEquipmentGross5.85.96.06.05.85.85.65.75.95.8
Percentage of Assets6.36.67.17.06.46.65.96.16.16.0
Percentage of Assets awr:ElectricServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1817173016741574152614391373131612361194
Percentage of PropertyPlantAndEquipmentGross94.294.194.094.094.294.294.494.394.194.2
Percentage of Assets101.5105.5111.5111.2103.8106.799.7100.596.596.4
Percentage of Assets awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

Construction In Progress Gross

us-gaap:ConstructionInProgressGross

us-gaap:ConstructionInProgressGross


Construction
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value150119786363624857454250
Percentage of ConstructionInProgressGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.47.35.24.54.34.73.54.43.63.44.2

us-gaap:ConstructionInProgressGross dei:LegalEntity

awr:GoldenStateWaterCompany


Construction
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1181177663616248564541
Percentage of ConstructionInProgressGross78.898.498.399.597.699.199.699.299.897.6
Percentage of Assets6.67.25.14.54.24.63.54.33.63.3
Percentage of Assets awr:GoldenStateWaterCompany7.67.75.54.84.54.93.84.63.83.5

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value157015421512147914561432141513781355132512961262123812181204118111551137115011281107107910601032101510071003995988983981968946929917912900897896891882854
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets85.386.084.485.785.886.286.385.986.586.986.386.286.085.685.179.579.076.878.378.478.778.878.775.875.673.772.875.174.573.874.971.772.172.171.670.771.872.072.474.573.771.7

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity

awr:GoldenStateWaterCompany


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value14501426140013731434141013941358133713091281124912271209119711751149113111451122110110741056102710111003998990983979977964942924913907895891
Percentage of PropertyPlantAndEquipmentNet92.492.592.692.898.598.598.598.698.798.898.898.999.199.299.499.599.599.599.599.599.599.599.699.699.699.699.599.599.599.599.699.699.699.599.599.599.599.5
Percentage of Assets78.779.578.279.584.584.985.084.785.385.885.385.385.284.984.679.178.676.477.978.078.478.578.375.575.373.472.574.774.173.474.671.471.871.771.370.471.572.0
Percentage of Assets awr:GoldenStateWaterCompany91.091.389.791.291.591.791.691.792.592.892.291.591.591.390.383.683.581.282.782.782.982.982.778.978.878.377.981.480.079.979.275.775.575.475.274.975.976.0

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

awr:AmericanStatesUtilityServices, srt:ReportableLegalEntities, awr:ContractedServices


Property
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value21212222211918151311
Percentage of PropertyPlantAndEquipmentNet1.41.41.51.51.51.41.31.21.10.9
Percentage of Assets1.21.21.31.31.31.21.21.00.90.8
Percentage of Assets awr:AmericanStatesUtilityServices srt:ReportableLegalEntities awr:ContractedServices0.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, srt:ReportableLegalEntities, awr:ElectricServiceUtilityOperations


Property
Period End2021-06-302021-03-312020-09-302020-06-30
Value98948380
Percentage of PropertyPlantAndEquipmentNet6.36.15.65.5
Percentage of Assets5.35.34.84.7
Percentage of Assets awr:BearValleyElectricServiceInc srt:ReportableLegalEntities awr:ElectricServiceUtilityOperations0.00.00.00.0

awr:GoldenStateWaterCompany, srt:ReportableLegalEntities, awr:WaterServiceUtilityOperations


Property
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value1450142613731353133612911273124711871166
Percentage of PropertyPlantAndEquipmentNet92.492.592.892.993.393.794.094.194.194.2
Percentage of Assets78.779.579.579.780.480.581.381.781.181.0
Percentage of Assets awr:GoldenStateWaterCompany srt:ReportableLegalEntities awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity, us-gaap:StatementBusinessSegments

awr:AmericanStatesUtilityServices, awr:ContractedServices


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2220157.0525.6154.6784.644.1834.0344.2424.7124.6544.664.7264.7764.5554.4243.7363.589
Percentage of PropertyPlantAndEquipmentNet1.51.51.20.60.50.40.50.40.40.40.50.50.50.50.50.50.50.40.4
Percentage of Assets1.21.31.00.50.40.30.30.30.30.30.40.40.40.40.40.40.40.30.3
Percentage of Assets awr:AmericanStatesUtilityServices awr:ContractedServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Property
Period End2020-12-31
Value89
Percentage of PropertyPlantAndEquipmentNet5.9
Percentage of Assets5.0
Percentage of Assets awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.0

awr:GoldenStateWaterCompany, awr:WaterServiceUtilityOperations


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value140013221218113710891005953936923901883871867855853852848841813
Percentage of PropertyPlantAndEquipmentNet92.693.494.094.494.694.895.095.495.495.295.195.095.195.195.195.195.295.395.2
Percentage of Assets78.280.581.280.374.174.569.271.568.468.768.568.167.368.368.568.871.070.268.3
Percentage of Assets awr:GoldenStateWaterCompany awr:WaterServiceUtilityOperations0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:ParentCompany


Investments
Period End2020-12-312019-12-312018-12-31
Value716616574
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0
Percentage of Assets40.037.638.3
Percentage of Assets srt:ParentCompany94.376.087.1

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value399000.0402000.0422000.0422000.0409000.0427000.0427000.0427000.0427000.0427000.0
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill dei:LegalEntity

awr:GoldenStateWaterCompany


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value399000.0402000.0404000.0404000.0427000.0409000.0409000.0409000.0409000.0409000.0
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.095.795.7104.495.895.895.895.895.8
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5.8615.686.4237.8619.1069.94411121415
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.40.60.60.70.81.01.11.3

us-gaap:FiniteLivedIntangibleAssetsNet dei:LegalEntity

awr:GoldenStateWaterCompany


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4.2035.2525.9837.49.579.46810121315
Percentage of FiniteLivedIntangibleAssetsNet71.792.593.194.1105.195.295.696.196.496.7
Percentage of Assets0.20.30.40.50.70.70.80.91.11.2
Percentage of Assets awr:GoldenStateWaterCompany0.30.30.40.60.70.70.81.01.11.3

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1010111111121313116.2760.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.60.60.70.70.80.80.80.70.40.0

us-gaap:OperatingLeaseRightOfUseAsset dei:LegalEntity

awr:GoldenStateWaterCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1010111111121212105.3670.0
Percentage of OperatingLeaseRightOfUseAsset98.998.699.698.497.997.496.896.094.385.50.0
Percentage of Assets0.60.60.60.70.70.70.80.80.70.40.0
Percentage of Assets awr:GoldenStateWaterCompany0.70.70.70.80.70.80.80.80.70.40.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value101010107.7057.6997.7025.4265.4185.3655.3225.75.6935.7085.6678.5047.4164.9345.0686.7736.7386.749119.5099.59912121213131415151515151212128.3958.5858.101
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.50.50.50.30.30.40.40.40.40.40.40.60.50.30.30.50.50.50.80.70.70.90.90.91.01.01.11.11.21.21.21.21.01.01.00.70.70.7

us-gaap:OtherAssetsNoncurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value9.5869.5829.6147.1046.8856.8856.885.3255.3195.2555.2185.6855.6815.6745.6838.4077.3034.84.9066.7586.7156.714119.7199.79810101011111112141414131010
Percentage of OtherAssetsNoncurrent89.690.890.769.789.489.489.398.198.297.998.099.799.899.4100.398.998.597.396.899.899.799.599.6102.2102.188.288.187.986.283.480.483.290.891.892.087.885.186.9
Percentage of Assets0.50.50.50.40.40.40.40.30.30.30.30.40.40.40.40.60.50.30.30.50.50.50.80.70.70.80.80.80.90.90.90.91.11.11.11.10.80.9
Percentage of Assets awr:GoldenStateWaterCompany0.60.60.60.50.40.40.50.40.40.40.40.40.40.40.40.60.50.30.40.50.50.50.90.70.80.80.80.90.90.90.91.01.11.21.21.10.90.9

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value9.7579.5488.769
Percentage of OtherAssetsNoncurrent92.1124.0164.8
Percentage of Assets0.50.60.6
Percentage of Assets srt:ParentCompany1.31.21.3

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value655763535143555955535950433850534537434853475046423641494542496255464052393837435736
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.23.63.13.02.63.43.73.63.54.03.43.02.73.63.63.12.53.03.33.83.53.83.43.22.73.03.83.43.23.84.74.23.63.24.03.13.13.13.74.83.0

us-gaap:AccountsPayableCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value5039454044364551474647443631424538293440444039343428293535303747413127362731
Percentage of AccountsPayableCurrent76.169.471.575.585.683.582.385.584.587.580.488.883.180.783.484.485.178.579.284.482.083.778.375.182.775.870.870.577.372.075.575.174.568.367.369.971.682.5
Percentage of Assets2.72.22.52.32.62.22.83.23.03.13.23.12.52.23.03.12.62.02.42.83.12.92.92.62.62.02.12.62.62.32.93.53.12.52.12.82.22.5
Percentage of Assets awr:GoldenStateWaterCompany3.22.62.92.72.82.43.03.43.33.33.43.32.72.43.23.22.82.12.53.03.33.13.12.72.72.22.32.92.92.53.03.73.32.62.23.02.42.7

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4496000.07277000.04832000.07245000.02935000.06423000.03050000.06488000.03109000.06492000.03865000.06560000.03834000.06617000.03861000.06576000.03831000.06626000.03864000.06595000.03852000.06623000.03626000.06282000.03546000.06292000.03549000.06143000.03894000.06248000.03897000.06251000.03916000.06240000.03909000.06423000.03921000.06430000.03938000.06440000.03902000.03256000.0
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.40.30.40.20.40.20.40.20.40.30.40.30.50.30.40.30.40.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.3

us-gaap:AccruedLiabilitiesCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value4218000.06972000.04545000.06968000.02661000.06127000.02736000.06177000.02809000.06190000.03550000.06298000.03570000.06338000.03585000.06305000.03544000.06336000.03588000.06319000.03582000.06352000.03599000.06282000.03546000.06336000.03593000.06143000.03894000.06246000.03897000.06251000.03916000.06240000.03909000.06423000.03921000.03938000.0
Percentage of AccruedLiabilitiesCurrent93.895.894.196.290.795.489.795.290.495.391.896.093.195.892.995.992.595.692.995.893.095.999.3100.0100.0100.7101.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.40.30.40.20.40.20.40.20.40.20.40.20.40.30.40.20.40.20.40.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.3
Percentage of Assets awr:GoldenStateWaterCompany0.30.40.30.50.20.40.20.40.20.40.30.50.30.50.30.40.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.50.30.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-312017-12-31
Value0.6881.0491.88.671010111211107.536.5833.911
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.10.10.50.60.60.70.80.70.70.50.50.3

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value111113118113158132115119106107146143129196156151140178177179160139123123959699120127119100115102899310999107104116124178
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.06.36.66.69.38.07.17.56.87.19.89.89.013.811.110.29.612.112.112.511.410.29.29.17.17.17.29.19.68.97.78.67.87.07.38.58.08.68.49.710.415.0

us-gaap:LiabilitiesCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value88858911528326124594808312317416315011711788129135137127107901007773738390737989766965716066
Percentage of LiabilitiesCurrent79.775.975.2101.7178.6197.3211.479.075.477.184.1122.0125.676.774.977.163.072.576.476.779.477.073.680.981.176.474.169.271.261.978.877.674.677.570.165.760.464.0
Percentage of Assets4.84.85.06.716.715.714.95.95.15.48.211.911.310.68.37.96.18.79.29.69.07.86.77.45.75.45.36.36.85.56.16.65.85.45.15.64.85.4
Percentage of Assets awr:GoldenStateWaterCompany5.65.55.77.718.117.016.16.45.55.98.912.812.211.48.88.36.49.39.810.29.68.37.17.76.05.85.76.97.46.06.47.06.15.75.45.95.15.7

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-31
Value2.3958.5333.963
Percentage of LiabilitiesCurrent2.07.42.7
Percentage of Assets0.10.50.3
Percentage of Assets srt:ParentCompany0.31.10.6

Notes Payable Current

us-gaap:NotesPayableCurrent us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument

us-gaap:NotesPayableCurrent

srt:ParentCompany, us-gaap:LongTermDebt


Notes
Period End2020-12-312019-12-31
Value114205
Percentage of NotesPayableCurrent100.0100.0
Percentage of Assets6.412.5
Percentage of Assets srt:ParentCompany us-gaap:LongTermDebt0.00.0

us-gaap:NotesPayableCurrent us-gaap:DebtInstrument

us-gaap:LongTermDebt


Notes
Period End2020-12-312019-12-31
Value134205
Percentage of NotesPayableCurrent117.7100.0
Percentage of Assets7.512.5
Percentage of Assets us-gaap:LongTermDebt0.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2049000.02010000.02013000.01812000.01794000.01815000.01849000.01841000.01808000.02027000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.0

us-gaap:OperatingLeaseLiabilityCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2018000.01969000.01956000.01664000.01618000.01614000.01612000.01559000.01484000.01597000.00
Percentage of OperatingLeaseLiabilityCurrent98.598.097.291.890.288.987.284.782.178.80.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.0
Percentage of Assets awr:GoldenStateWaterCompany0.10.10.10.10.10.10.10.10.10.10.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1010101010101010109.8431012131215121111111010101018171718171313121512131117141416171417
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.60.60.70.60.60.70.90.90.91.10.80.80.80.80.70.70.70.81.31.31.31.41.31.01.01.01.10.91.10.91.31.21.11.31.51.21.4

us-gaap:OtherLiabilitiesCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value9.4769.4089.4039.5889.969.6559.745109.3999.1299.4321112111412111010109.9559.8959.921171717181713121214121311161416
Percentage of OtherLiabilitiesCurrent86.790.090.189.094.594.394.296.093.992.787.989.793.494.397.397.297.195.896.799.097.797.397.298.698.798.499.599.499.298.999.499.399.599.499.597.097.296.8
Percentage of Assets0.50.50.50.60.60.60.60.60.60.60.60.80.90.81.00.80.80.70.70.70.70.70.71.31.31.31.41.31.01.01.01.10.91.00.91.31.21.3
Percentage of Assets awr:GoldenStateWaterCompany0.60.60.60.60.60.60.60.70.60.60.70.80.90.91.10.90.80.80.80.80.70.80.81.41.31.41.51.41.11.11.01.21.01.11.01.41.21.4

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-31
Value0.2720.2740.291
Percentage of OtherLiabilitiesCurrent2.62.62.7
Percentage of Assets0.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.0

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value0.396.4746.7833.0535.4010.1710.0952.0193.1043.8130.361.0490.4860.2380.2256.013110.2530.1495.9580.0510.4540.0682.8580.120.7990.6385.6422.8080.6550.5070.7950.4370.750.5111.7261.1291.6540.3320.4870.5212.277
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.40.40.20.30.00.00.10.20.20.00.10.00.00.00.40.80.00.00.40.00.00.00.20.00.10.00.40.20.00.00.10.00.10.00.10.10.10.00.00.00.2

us-gaap:TaxesPayableCurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Taxes
Period End2021-06-302021-03-312020-12-312020-06-302019-12-312019-09-302019-06-302018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-09-302014-06-302013-12-31
Value0.5324.2214.6121.2070.01.420.2760.01.0160.00.01.1363.2690.00.01.8630.650.9130.0
Percentage of TaxesPayableCurrent136.465.268.022.30.070.38.90.0209.10.00.018.927.90.00.031.311.532.50.0
Percentage of Assets0.00.20.30.10.00.10.00.00.10.00.00.10.20.00.00.10.00.10.0
Percentage of Assets awr:GoldenStateWaterCompany0.00.30.30.10.00.10.00.00.10.00.00.10.20.00.00.10.10.10.0

us-gaap:TaxesPayableCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Taxes
Period End2020-12-312019-12-312018-12-31
Value2.1233.2593.672
Percentage of TaxesPayableCurrent31.33430.51020.0
Percentage of Assets0.10.20.2
Percentage of Assets srt:ParentCompany0.30.40.6

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value591642515409
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0
Percentage of Assets33.039.234.328.9

us-gaap:LiabilitiesNoncurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value447445481414
Percentage of LiabilitiesNoncurrent75.869.293.4101.2
Percentage of Assets25.027.132.129.2
Percentage of Assets awr:GoldenStateWaterCompany28.729.234.631.2

us-gaap:LiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-31
Value11520197
Percentage of LiabilitiesNoncurrent19.631.418.8
Percentage of Assets6.512.36.5
Percentage of Assets srt:ParentCompany15.224.814.7

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value412440440440280280280281281281281281281281321320320320320320320320325325325325325310310326326332332332332344341340340340340299
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.424.624.625.516.516.917.117.517.918.418.719.219.519.722.721.621.921.721.822.322.823.424.123.924.223.823.623.423.424.424.924.625.325.826.026.727.327.327.528.528.425.2

us-gaap:LongTermDebtNoncurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value412440440440280280280281281281281281281281321320320320320320320320325325325325325310310326326332332332332344341340
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.424.624.625.516.516.917.117.517.918.418.719.219.519.722.721.621.921.721.822.322.823.424.123.924.223.823.623.423.424.424.924.625.325.826.026.727.327.5
Percentage of Assets awr:GoldenStateWaterCompany25.928.228.229.217.918.318.519.019.419.920.220.621.021.224.222.823.323.023.223.624.224.825.525.025.425.425.425.525.326.626.426.126.627.127.428.428.929.0

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value444284324325325325326332335340300
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.817.321.623.022.124.223.725.426.227.525.2

us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity

awr:GoldenStateWaterCompany


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value444284324325325325326332335340
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.817.321.623.022.124.223.725.426.227.5
Percentage of Assets awr:GoldenStateWaterCompany28.518.723.424.523.525.525.426.927.729.0

us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity, us-gaap:LongtermDebtType

awr:GoldenStateWaterCompany, awr:AmericanRecoveryAndReinvestmentActObligationDue2033


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3.2193.4063.5813.7453.8964.0344.1584.2694.2590.851
Percentage of DebtAndCapitalLeaseObligations0.71.21.11.21.21.21.31.31.30.2
Percentage of Assets0.20.20.20.30.30.30.30.30.30.1
Percentage of Assets awr:GoldenStateWaterCompany awr:AmericanRecoveryAndReinvestmentActObligationDue20330.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable217PercentDue2030


Debt
Period End2020-12-31
Value85
Percentage of DebtAndCapitalLeaseObligations19.1
Percentage of Assets4.7
Percentage of Assets awr:GoldenStateWaterCompany awr:NotesPayable217PercentDue20300.0

awr:GoldenStateWaterCompany, awr:NotesPayable290PercentDue2040


Debt
Period End2020-12-31
Value75
Percentage of DebtAndCapitalLeaseObligations16.9
Percentage of Assets4.2
Percentage of Assets awr:GoldenStateWaterCompany awr:NotesPayable290PercentDue20400.0

awr:GoldenStateWaterCompany, awr:NotesPayable3.45PercentDue2029


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value151515151515150.0
Percentage of DebtAndCapitalLeaseObligations3.45.34.64.64.64.64.60.0
Percentage of Assets0.80.91.01.11.01.11.10.0
Percentage of Assets awr:GoldenStateWaterCompany awr:NotesPayable3.45PercentDue20290.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable5.5PercentDue2026


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7.737.737.737.737.737.737.737.737.737.745
Percentage of DebtAndCapitalLeaseObligations1.72.72.42.42.42.42.42.32.32.3
Percentage of Assets0.40.50.50.50.50.60.60.60.60.6
Percentage of Assets awr:GoldenStateWaterCompany awr:NotesPayable5.5PercentDue20260.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:StateWaterProjectDue2035


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3.3223.5633.6673.7723.9024.04.0774.194.4534.559
Percentage of DebtAndCapitalLeaseObligations0.71.31.11.21.21.21.31.31.31.3
Percentage of Assets0.20.20.20.30.30.30.30.30.30.4
Percentage of Assets awr:GoldenStateWaterCompany awr:StateWaterProjectDue20350.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtAndCapitalLeaseObligations us-gaap:LongtermDebtType

awr:AmericanRecoveryAndReinvestmentActObligationDue2033


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3.2193.4063.5813.7453.8964.0344.1584.2694.2590.851
Percentage of DebtAndCapitalLeaseObligations0.71.21.11.21.21.21.31.31.30.2
Percentage of Assets0.20.20.20.30.30.30.30.30.30.1
Percentage of Assets awr:AmericanRecoveryAndReinvestmentActObligationDue20330.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable217PercentDue2030


Debt
Period End2020-12-31
Value85
Percentage of DebtAndCapitalLeaseObligations19.1
Percentage of Assets4.7
Percentage of Assets awr:NotesPayable217PercentDue20300.0

awr:NotesPayable290PercentDue2040


Debt
Period End2020-12-31
Value75
Percentage of DebtAndCapitalLeaseObligations16.9
Percentage of Assets4.2
Percentage of Assets awr:NotesPayable290PercentDue20400.0

awr:NotesPayable3.45PercentDue2029


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value151515151515150.0
Percentage of DebtAndCapitalLeaseObligations3.45.34.64.64.64.64.60.0
Percentage of Assets0.80.91.01.11.01.11.10.0
Percentage of Assets awr:NotesPayable3.45PercentDue20290.00.00.00.00.00.00.00.0

awr:NotesPayable5.5PercentDue2026


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7.737.737.737.737.737.737.737.737.737.7457.785
Percentage of DebtAndCapitalLeaseObligations1.72.72.42.42.42.42.42.32.32.32.6
Percentage of Assets0.40.50.50.50.50.60.60.60.60.60.7
Percentage of Assets awr:NotesPayable5.5PercentDue20260.00.00.00.00.00.00.00.00.00.00.0

awr:StateWaterProjectDue2035


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3.3223.5633.6673.7723.9024.04.0774.194.4534.5594.617
Percentage of DebtAndCapitalLeaseObligations0.71.31.11.21.21.21.31.31.31.31.5
Percentage of Assets0.20.20.20.30.30.30.30.30.30.40.4
Percentage of Assets awr:StateWaterProjectDue20350.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value440280281321320325325326332340299
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.617.118.722.721.824.123.624.926.027.525.2

us-gaap:LongTermDebtAndCapitalLeaseObligations dei:LegalEntity

awr:GoldenStateWaterCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value440280281321320325325326332340
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.617.118.722.721.824.123.624.926.027.5
Percentage of Assets awr:GoldenStateWaterCompany28.218.520.224.223.225.525.426.427.429.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value134131131129127126125
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.37.47.37.57.57.67.6

us-gaap:DeferredIncomeTaxLiabilitiesNet dei:LegalEntity

awr:GoldenStateWaterCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value127125124123130128127
Percentage of DeferredIncomeTaxLiabilitiesNet95.094.895.095.4102.2102.0102.0
Percentage of Assets6.97.07.07.17.77.87.8
Percentage of Assets awr:GoldenStateWaterCompany8.08.08.08.28.38.48.4

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value969695666969685759585754595857465250494448474259636361344140387073737168707068414442
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.35.45.33.94.14.24.23.63.83.93.83.74.14.14.13.23.63.43.43.13.53.53.24.34.74.64.52.63.13.03.05.35.65.75.65.35.75.75.53.43.73.5

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value9696956669696857595857545958574652504944484742596363613441403870737371687068
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent99.999.999.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.25.45.33.94.14.24.23.63.83.93.83.74.14.14.13.23.63.43.43.13.53.53.24.34.74.64.52.63.13.03.05.35.65.75.65.35.75.5
Percentage of Assets awr:GoldenStateWaterCompany6.16.26.14.44.54.54.53.84.14.24.14.04.44.44.33.33.83.63.63.33.73.73.34.55.04.94.82.93.43.33.15.65.96.05.95.76.05.8

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5939333429
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent62.457.558.259.059.2
Percentage of Assets3.32.42.22.42.0
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3629242320
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent37.642.541.841.040.8
Percentage of Assets2.01.81.61.71.4
Percentage of Assets us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value15151516151413111110111111111113121011101010106.6576.7086.7376.7716.7976.8866.5176.5246.5696.8066.8256.8777.0187.046.9016.9817.1257.1597.278
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.90.90.90.80.80.70.70.70.80.80.80.80.80.90.90.70.80.70.70.80.80.50.50.50.50.50.50.50.50.50.50.50.50.50.60.60.60.60.60.6

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value15141415141313101010111111101013121011101010106.5526.586.6086.6356.6616.7436.3736.416.5026.7446.7666.8196.9316.9316.879
Percentage of OtherLiabilitiesNoncurrent95.695.696.394.997.299.299.199.099.199.299.299.199.299.199.299.499.499.299.399.098.998.998.998.498.198.198.098.097.997.898.399.099.199.199.298.898.598.5
Percentage of Assets0.80.80.80.90.90.80.80.70.70.70.70.80.80.80.80.90.90.70.80.70.70.80.80.50.50.50.50.50.50.50.50.50.50.50.50.50.60.6
Percentage of Assets awr:GoldenStateWaterCompany0.91.01.01.00.90.90.90.70.80.80.80.80.80.80.81.00.90.70.80.70.80.80.80.50.50.50.50.50.50.50.50.50.50.60.60.60.60.6

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.0289.1599.63610101111119.5484.4390.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.50.50.50.60.60.70.70.70.60.30.0

us-gaap:OperatingLeaseLiabilityNoncurrent dei:LegalEntity

awr:GoldenStateWaterCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.9779.0959.63610101111119.2833.9940.0
Percentage of OperatingLeaseLiabilityNoncurrent99.499.3100.0100.099.699.298.798.297.290.00.0
Percentage of Assets0.50.50.50.60.60.70.70.70.60.30.0
Percentage of Assets awr:GoldenStateWaterCompany0.60.60.60.70.70.70.80.80.60.30.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value2318000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value1825000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value1503000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value1324000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value3925000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value111313116.58.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.80.70.40.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value13
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.8

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value1807000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value664649641633619604601595578561558554539531529525513497494490476467465470477497506510495495492486465461454448426415408405377359310
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets36.036.235.836.736.536.436.637.136.936.837.237.837.437.337.435.435.133.633.634.133.934.134.634.535.636.436.838.537.337.237.636.035.435.835.534.834.133.333.033.931.70.00.0

us-gaap:StockholdersEquity dei:LegalEntity

awr:GoldenStateWaterCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312010-12-312009-12-31
Value592583583511561551551539515503503488478473474475476457446448429423423432433432435438434433437436427419416408394384358331
Percentage of StockholdersEquity89.389.990.980.790.691.291.690.589.189.690.288.188.789.189.590.592.891.890.491.390.290.790.991.990.787.085.985.987.887.588.989.791.891.091.691.192.394.294.992.2
Percentage of Assets32.232.632.629.633.133.233.633.632.933.033.533.333.233.333.532.032.630.930.431.130.631.031.431.732.231.631.633.032.732.533.432.332.632.632.531.731.531.130.10.0
Percentage of Assets awr:GoldenStateWaterCompany37.237.437.434.035.835.836.236.435.635.736.235.835.735.835.833.934.632.832.333.032.432.733.233.233.833.833.936.035.435.435.534.334.234.234.333.733.432.80.00.0

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

awr:GoldenStateWaterCompany, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value356355354294294294293293293293292244242241242240238235233231228217195
Percentage of StockholdersEquity53.654.855.346.547.548.648.849.350.752.252.444.245.045.545.748.751.246.547.550.956.057.554.5
Percentage of Assets19.319.819.817.117.317.717.918.318.719.219.516.716.817.017.116.417.717.117.818.118.518.20.0
Percentage of Assets awr:GoldenStateWaterCompany us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value236228228216266257257245222210211243235231232206184199203184155141135
Percentage of StockholdersEquity35.635.135.634.243.142.642.841.238.437.437.844.043.743.643.841.739.739.441.440.638.137.437.8
Percentage of Assets12.812.712.712.615.715.515.715.314.213.814.116.616.416.316.414.013.714.515.614.412.611.80.0
Percentage of Assets awr:GoldenStateWaterCompany us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-31
Value641601558
Percentage of StockholdersEquity100.0100.0100.0
Percentage of Assets35.836.637.2
Percentage of Assets srt:ParentCompany84.574.184.7

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value258257256256256255255255254254253253251250250247245253253249233227223185
Percentage of StockholdersEquity38.939.740.040.541.442.342.542.944.145.345.445.746.647.147.250.052.650.051.654.857.160.262.159.7
Percentage of Assets14.014.414.314.915.115.415.615.916.316.716.917.317.417.617.716.818.218.419.419.518.819.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarningsUnappropriated


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value406391385377363348345340323307304300288281279247220253238205175150136125
Percentage of StockholdersEquity61.160.360.059.558.657.757.557.155.954.754.654.353.452.952.850.047.450.048.445.242.939.837.940.3
Percentage of Assets22.021.921.521.821.421.021.121.220.720.120.320.520.019.819.816.816.418.418.216.014.212.60.00.0
Percentage of Assets us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value258257256256256255255255254254253253251250250249248247247246245244245244247251253253254254253252503499498494473469466462458454
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.014.414.314.915.115.415.615.916.316.716.917.317.417.617.716.817.016.716.817.117.417.918.217.918.418.418.419.219.219.119.418.738.338.838.938.337.837.737.738.738.338.2

us-gaap:CommonStockValue dei:LegalEntity

awr:GoldenStateWaterCompany


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value356355354294294294293293293293292244242241242241240240240239238238238237236235235234233233233232231231231230229228
Percentage of CommonStockValue138.0138.1138.3114.9114.9114.9114.9115.0115.1115.2115.396.696.696.796.896.997.097.297.397.397.497.497.597.095.693.893.192.491.991.992.092.146.146.346.446.648.549.1
Percentage of Assets19.319.819.817.117.317.717.918.318.719.219.516.716.817.017.116.316.516.216.416.617.017.417.717.417.617.217.117.717.617.517.817.217.717.918.117.818.318.5
Percentage of Assets awr:GoldenStateWaterCompany22.422.822.719.618.819.119.319.820.320.821.017.918.118.318.317.217.517.217.417.618.018.418.718.218.418.418.419.319.019.118.918.218.618.919.119.019.519.5

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value406391385377363348345340323307304300288281279276264250247244231222220225230246253256240241238234213211205201189180175173163150
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.021.921.521.821.421.021.121.220.720.120.320.520.019.819.818.618.116.916.817.016.416.316.416.617.218.018.419.318.118.118.217.416.316.416.015.615.214.514.214.513.712.6

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

awr:GoldenStateWaterCompany


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value236228228216266257257245222210211243235231232234235216206208190185184195196196199203200200203204195188184178164155
Percentage of RetainedEarningsAccumulatedDeficit58.358.259.357.573.573.874.472.168.668.469.381.081.982.483.084.888.986.583.585.382.583.383.786.485.480.078.779.483.482.985.587.291.589.090.088.686.588.9
Percentage of Assets12.812.712.712.615.715.515.715.314.213.814.116.616.416.316.415.816.114.714.014.513.613.613.714.314.714.414.515.415.115.015.615.114.914.614.413.913.112.6
Percentage of Assets awr:GoldenStateWaterCompany14.914.614.614.417.016.716.916.615.414.915.217.917.617.517.516.717.115.614.915.414.414.314.515.015.315.415.616.716.316.316.516.015.715.415.214.813.913.3

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value16243441301532391529289.91527372617291220167.593
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302011-12-312011-09-30
Value172235342317273012252622311825
Percentage of NetCashProvidedByUsedInOperatingActivities104.792.4102.781.975.4114.685.077.581.088.094.0224.1115.6106.187.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-30
Value2.4332.8031.2840.603
Percentage of NetCashProvidedByUsedInOperatingActivities14.811.43.71.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-39.103-36.98-36.973-32.154-29.106-33.377-42.523-29.803-40.52-40.349-39.285-19.936-18.657-14.476-14.967-16.491-25.7019.132-17.474-20.645-19.326
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302011-12-312011-09-30
Value-20.034-43.715-30.155-27.998-27.639-31.892-39.759-28.036-37.493-38.9-37.166-19.601-18.437-16.349-25.374
Percentage of NetCashProvidedByUsedInInvestingActivities51.2118.281.687.195.095.693.594.192.596.494.698.398.899.198.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-30
Value-6.416-4.782-6.3-3.039
Percentage of NetCashProvidedByUsedInInvestingActivities16.412.917.09.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value21-17.48231-7.7954.564160.899-0.952245.67216-9.5598.166-3.514-6.38-4.939-10.044-13.042-4.490.57813
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302011-12-312011-09-30
Value4.991-12.2126-3.4355.564138.0351.233259.37114-5.5925.228-4.255-1.09
Percentage of NetCashProvidedByUsedInFinancingActivities23.769.884.544.1121.983.1893.8-129.5100.9165.290.358.564.086.210.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-30
Value4.021.7954.82.999
Percentage of NetCashProvidedByUsedInFinancingActivities19.1-10.315.4-38.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Cash And Cash Equivalents Period Increase Decrease

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease dei:LegalEntity, us-gaap:StatementBusinessSegments

us-gaap:CashAndCashEquivalentsPeriodIncreaseDecrease

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Cash
Period End2021-06-302021-03-312020-12-312020-09-30
Value0.037-0.184-0.2160.563
Percentage of CashAndCashEquivalentsPeriodIncreaseDecrease100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value9.779.569.669.3489.0318.8118.9049.0066.655101010109.6669.8479.8549.6479.6839.9729.4869.6019.791101010109.469101010109.7539.7689.816101010109.529.5549.5389.737128.3978.365
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization dei:LegalEntity

awr:GoldenStateWaterCompany


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value8.2138.0628.1117.8358.2098.0298.0878.3596.0069.989109.6239.439.3349.5119.5099.3949.4389.6879.249.3479.53101010109.146101010109.4749.4849.5229.9149.94110109.299.3349.321
Percentage of DepreciationDepletionAndAmortization84.184.384.083.890.991.190.892.890.292.294.195.194.296.696.696.597.497.597.197.497.497.397.597.497.197.196.697.097.297.297.497.197.197.096.697.297.397.497.697.797.7

us-gaap:DepreciationDepletionAndAmortization dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

awr:AmericanStatesUtilityServices, srt:ReportableLegalEntities, awr:ContractedServices


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.9150.8590.8870.8220.7820.6470.6490.8430.4950.58
Percentage of DepreciationDepletionAndAmortization9.49.09.59.18.97.29.87.84.95.8

awr:BearValleyElectricServiceInc, srt:ReportableLegalEntities, awr:ElectricServiceUtilityOperations


Depreciation
Period End2021-06-302021-03-312020-09-30
Value0.6420.6390.626
Percentage of DepreciationDepletionAndAmortization6.66.76.7

awr:GoldenStateWaterCompany, srt:ReportableLegalEntities, awr:WaterServiceUtilityOperations


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value8.2138.0627.8357.6017.4227.695.4059.3899.0588.866
Percentage of DepreciationDepletionAndAmortization84.184.383.884.284.285.481.286.789.588.6

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value9.533-7.2672.6912.6844.085-4.112-2.2921.966.214-6.1313.391.3652.49-5.963-0.9794.389-0.541.488-1.897-4.1025.648-3.091-3.2573.4253.276-2.765-7.0724.4311.649-0.63-7.5553.3913.752.229-8.6818.5531.6832.745-5.028-7.5089.4940.089-5.4273.614
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value9.673-5.674-1.881.2583.859-1.427-3.4851.9164.208-1.081-2.6333.0362.627-4.937-1.0722.7090.7592.531-3.434-1.9043.750.074-2.644-0.8244.850.558-4.617-0.0273.338-0.37-4.0991.8494.4360.73-6.2763.972.608-2.633-2.659-6.564
Percentage of IncreaseDecreaseInAccountsPayable101.578.1-69.946.994.534.7152.197.867.717.6-77.7222.4105.582.8109.561.7-140.6170.1181.046.466.4-2.481.2-24.1148.0-20.265.3-0.6202.458.754.354.5118.332.872.346.4155.0-95.952.987.4

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value7.798-5.711-1.4874.2456.4294.085-7.0444.0336.884-5.755-6.2673.557.578-6.743-3.0124.27510-4.097-2.7212.7064.39-2.625-2.9473.0962.732-1.958-7.3241.4385.535-3.628-6.1923.15910-1.998-7.8916.9263.649-0.911-4.4871.9236.927-0.609-2.9145.031
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsReceivable dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value8.315-6.033-2.2043.8166.4294.085-7.0444.0336.884-5.755-6.2673.557.578-6.743-3.0124.27510-4.097-2.7212.7064.39-2.625-2.9473.0962.732-1.958-7.3241.4385.535-3.628-6.1923.15910-1.998-7.8916.9263.649-0.911-5.5541.923
Percentage of IncreaseDecreaseInAccountsReceivable106.6105.6148.289.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0123.8100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value16243441301532391529289.91527372617291220167.593
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302011-12-312011-09-30
Value172235342317273012252622311825
Percentage of NetCashProvidedByUsedInOperatingActivities104.792.4102.781.975.4114.685.077.581.088.094.0224.1115.6106.187.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-30
Value2.4332.8031.2840.603
Percentage of NetCashProvidedByUsedInOperatingActivities14.811.43.71.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value26192026251416282612132216101221221211211610112115121321151111201613101815106.70915157.5899.086.652
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2012112120111123229.0227.55517138.897.3091718106.43217138.9848.0141612108.97516139.3477.511613105.90514117.3825.3871310
Percentage of NetIncomeLoss78.963.557.979.781.779.671.783.483.370.254.878.183.582.556.882.580.684.657.482.681.788.569.077.182.885.566.475.987.684.863.879.783.279.557.478.175.373.080.383.562.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.3022.5232.5621.3081.063
Percentage of NetIncomeLoss4.913.112.74.94.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:ElectricServiceUtilityOperations


Net
Period End2020-09-302020-06-302020-03-31
Value3.7791.0632.346
Percentage of NetIncomeLoss14.24.216.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany awr:ElectricServiceUtilityOperations0.00.00.0

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

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Net
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2012201123229.02217138.89
Percentage of NetIncomeLoss78.963.581.779.683.483.370.278.183.582.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsUnappropriated


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2619262514282612221610
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value449000.01930000.0-11000.0347000.0283000.01844000.049000.0289000.0181000.01998000.0203000.02011000.0639000.0998000.0582000.0669000.0604000.01030000.0573000.0505000.0674000.0786000.0637000.0796000.0468000.0853000.0261000.0562000.0594000.0805000.0298000.0576000.0474000.0661000.0454000.0307000.0628000.0542000.0275000.0276000.0567000.0402000.0245000.0285000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensation dei:LegalEntity

awr:GoldenStateWaterCompany


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value400000.01790000.0-26000.0433000.0236000.01706000.084000.0217000.0107000.01845000.0133000.01938000.0574000.0752000.0450000.0614000.0550000.0806000.0446000.0463000.0631000.0578000.0620000.0761000.0435000.0627000.0235000.0540000.0409000.0564000.0263000.0549000.0435000.0400000.0426000.0280000.0620000.0341000.0246000.0246000.0
Percentage of ShareBasedCompensation89.192.7236.4124.883.492.5171.475.159.192.365.596.489.875.477.391.891.178.377.891.793.673.597.395.692.973.590.096.168.970.188.395.391.860.593.891.298.762.989.589.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-39.103-36.98-36.973-32.154-29.106-33.377-42.523-29.803-40.52-40.349-39.285-19.936-18.657-14.476-14.967-16.491-25.7019.132-17.474-20.645-19.326
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302011-12-312011-09-30
Value-20.034-43.715-30.155-27.998-27.639-31.892-39.759-28.036-37.493-38.9-37.166-19.601-18.437-16.349-25.374
Percentage of NetCashProvidedByUsedInInvestingActivities51.2118.281.687.195.095.693.594.192.596.494.698.398.899.198.7
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-30
Value-6.416-4.782-6.3-3.039
Percentage of NetCashProvidedByUsedInInvestingActivities16.412.917.09.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value39373532293340294040392828303532212329343529272516171818152028272218191814141626
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment dei:LegalEntity

awr:GoldenStateWaterCompany


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value31312828273238283739372525273431212329333528262516171817141927272218191814141625
Percentage of PaymentsToAcquirePropertyPlantAndEquipment81.985.880.787.194.995.493.294.092.596.494.690.191.290.996.897.298.598.899.398.298.398.397.699.498.399.699.598.596.396.498.599.8100.698.398.398.898.496.797.996.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value21-17.48231-7.7954.564160.899-0.952245.67216-9.5598.166-3.514-6.38-4.939-10.044-13.042-4.490.57813
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312012-12-312012-09-302011-12-312011-09-30
Value4.991-12.2126-3.4355.564138.0351.233259.37114-5.5925.228-4.255-1.09
Percentage of NetCashProvidedByUsedInFinancingActivities23.769.884.544.1121.983.1893.8-129.5100.9165.290.358.564.086.210.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:GoldenStateWaterCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Net
Period End2021-06-302021-03-312020-12-312020-09-30
Value4.021.7954.82.999
Percentage of NetCashProvidedByUsedInFinancingActivities19.1-10.315.4-38.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax awr:BearValleyElectricServiceInc awr:ElectricServiceUtilityOperations0.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value-0.009140.00.00.0-0.6262.7680.001-0.003
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.00.00.00.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity

awr:GoldenStateWaterCompany


Proceeds
Period End2020-12-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value-0.009140.00.00.0-0.6262.7680.001-0.003
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.00.00.00.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value280.0990.0010.1250.1180.0920.00.1250.114400.00.1290.1080.0890.0090.1290.1080.0830.0080.1360.0920.0770.0090.0590.10.0696.009150.0980.0763.1090.2560.0870.0228.0090.060.1690.0650.0760.025220.070.3890.029
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity

awr:GoldenStateWaterCompany


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value280.0990.0010.1250.1180.0920.00.1250.114400.00.1290.1080.0890.0090.1290.1080.0830.0080.1360.0920.0770.0090.0590.10.0696.009150.0980.0763.1090.2560.0870.0228.0090.060.1690.0650.0760.025
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1212121211111111101010109.3679.3629.3539.3498.8618.8548.858.28.28.1818.1938.38.08.1558.188.27.97.8467.847.86.86.8386.8236.75.35.2775.2465.25.24.8494.8414.834
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividends dei:LegalEntity

awr:AmericanStatesUtilityServices


Payments
Period End2020-09-302020-03-312019-09-30
Value121111
Percentage of PaymentsOfDividends100.4100.5100.6

awr:GoldenStateWaterCompany


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value12120.011110.01010109.379.38180.00.00.08.38.31813131313137.86.86.80.00.05.25.05.05.0
Percentage of PaymentsOfDividends100.3100.30.0100.4100.10.099.899.9100.0100.0100.2195.70.00.00.0101.2101.5216.9162.5159.4158.5164.6165.7100.0100.099.40.00.098.194.895.396.2

us-gaap:PaymentsOfDividends us-gaap:ConsolidatedEntities

srt:ParentCompany


Payments
Period End2021-06-302020-06-30
Value1211
Percentage of PaymentsOfDividends100.3100.4

Dividends

us-gaap:Dividends dei:LegalEntity

us-gaap:Dividends

awr:BearValleyElectricServiceInc


Dividendsdei:
Period End2020-12-31
Value12
Percentage of Dividends100.0

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

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Dividendsdei:
Period End2020-09-30
Value71
Percentage of Dividends0.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage dei:LegalEntity

us-gaap:DebtInstrumentInterestRateStatedPercentage

awr:GoldenStateWaterCompany


Debt
Period End2021-05-24
Value9.56
Percentage of DebtInstrumentInterestRateStatedPercentage100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany0.0

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

awr:GoldenStateWaterCompany, awr:NotePayable956PercentDue2031


Debt
Period End2021-03-31
Value9.56
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotePayable956PercentDue20310.0

awr:GoldenStateWaterCompany, awr:NotesPayable3.45PercentDue2029


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-03-312013-12-31
Value3.450.03450.03450.03450.03450.03450.03450.03450.0345
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable3.45PercentDue20290.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable5.5PercentDue2026


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5.50.0550.0550.0550.0550.0550.0550.0550.0550.055
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable5.5PercentDue20260.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable5.87PercentDue2028


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5.870.05870.05870.05870.05870.05870.05870.05870.05870.0587
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable5.87PercentDue20280.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable6.59PercentDue2029


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6.590.06590.06590.06590.06590.06590.06590.06590.06590.0659
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable6.59PercentDue20290.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable6.81PercentDue2028


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6.810.06810.06810.06810.06810.06810.06810.06810.06810.0681
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable6.81PercentDue20280.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable6PercentDue2041


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value6.00.060.060.060.060.060.060.060.060.06
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable6PercentDue20410.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable7.23PercentDue2031


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7.230.07230.07230.07230.07230.07230.07230.07230.07230.0723
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable7.23PercentDue20310.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable7.875PercentDue2030


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7.8750.078750.078750.078750.078750.078750.078750.078750.078750.07875
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable7.875PercentDue20300.00.00.00.00.00.00.00.00.00.0

awr:GoldenStateWaterCompany, awr:NotesPayable9.56PercentDue2031


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.560.09560.09560.09560.09560.09560.09560.09560.09560.0956
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotesPayable9.56PercentDue20310.00.00.00.00.00.00.00.00.00.0

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

awr:GoldenStateWaterCompany, awr:NotePayable2.17PercentDue2030, us-gaap:SubsequentEvent


Debt
Period End2020-07-08
Value0.0217
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotePayable2.17PercentDue2030 us-gaap:SubsequentEvent0.0

awr:GoldenStateWaterCompany, awr:NotePayables2.9PercentDue2040, us-gaap:SubsequentEvent


Debt
Period End2020-07-08
Value0.029
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:GoldenStateWaterCompany awr:NotePayables2.9PercentDue2040 us-gaap:SubsequentEvent0.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:LongtermDebtType

awr:NotePayable2.17PercentDue2030


Debt
Period End2020-07-08
Value2.17
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotePayable2.17PercentDue20300.0

awr:NotePayable29PercentDue2040


Debt
Period End2020-07-08
Value2.9
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotePayable29PercentDue20400.0

awr:NotesPayable217PercentDue2030


Debt
Period End2020-12-31
Value2.17
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable217PercentDue20300.0

awr:NotesPayable290PercentDue2040


Debt
Period End2020-12-31
Value2.9
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable290PercentDue20400.0

awr:NotesPayable3.45PercentDue2029


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3.450.03450.03450.03450.03450.03450.03450.0345
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable3.45PercentDue20290.00.00.00.00.00.00.00.0

awr:NotesPayable5.5PercentDue2026


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5.50.0550.0550.0550.0550.0550.0550.0550.0550.0550.055
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable5.5PercentDue20260.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable5.87PercentDue2028


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5.870.05870.05870.05870.05870.05870.05870.05870.05870.05870.0587
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable5.87PercentDue20280.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable6.59PercentDue2029


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.590.06590.06590.06590.06590.06590.06590.06590.06590.06590.0659
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable6.59PercentDue20290.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable6.81PercentDue2028


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.810.06810.06810.06810.06810.06810.06810.06810.06810.06810.0681
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable6.81PercentDue20280.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable6PercentDue2041


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value6.00.060.060.060.060.060.060.060.060.060.06
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable6PercentDue20410.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable7.23PercentDue2031


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7.230.07230.07230.07230.07230.07230.07230.07230.07230.07230.0723
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable7.23PercentDue20310.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable7.875PercentDue2030


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7.8750.078750.078750.078750.078750.078750.078750.078750.078750.078750.07875
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable7.875PercentDue20300.00.00.00.00.00.00.00.00.00.00.0

awr:NotesPayable9.56PercentDue2031


Debt
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9.560.09560.09560.09560.09560.09560.09560.09560.09560.09560.09560.09560.09560.0956
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations awr:NotesPayable9.56PercentDue20310.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations dei:LegalEntity

us-gaap:EffectiveIncomeTaxRateContinuingOperations

awr:GoldenStateWaterCompany


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value22.123.626.70.2590.2240.2640.2340.190.2320.2360.1920.3840.3980.3690.3820.390.3770.4270.4050.4110.4070.4210.3790.3820.4110.4170.408
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateContinuingOperations us-gaap:ConsolidatedEntities

us-gaap:Parent


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value21.923.525.40.2440.2170.2510.2260.2050.2320.2120.1920.3730.3860.3510.370.375
Percentage of EffectiveIncomeTaxRateContinuingOperations99.199.695.194.296.995.196.6107.9100.089.8100.097.197.095.196.996.2

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value131125114115224192183149133119
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilities dei:LegalEntity

awr:GoldenStateWaterCompany


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value124127118120227195186150134120
Percentage of DeferredTaxLiabilities95.0102.0103.5104.4101.5101.5101.4100.3100.4100.8

awr:AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries

awr:AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries


Allowance
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1016000.080000.0156000.0164000.0
Percentage of AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries100.0100.0100.0100.0

awr:AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries dei:LegalEntity

awr:GoldenStateWaterCompany


Allowance
Period End2020-12-312020-09-302020-06-302020-03-31
Value-967000.067000.0156000.0164000.0
Percentage of AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries95.283.8100.0100.0

awr:CostofConstruction

awr:CostofConstruction


Costof
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1515131213121412
Percentage of CostofConstruction100.0100.0100.0100.0100.0100.0100.0100.0

awr:DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod dei:LegalEntity

awr:DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod

awr:GoldenStateWaterCompany


Debt
Period End2021-05-24
Value3.0
Percentage of DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod100.0

awr:DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod dei:LegalEntity, us-gaap:Range, us-gaap:LongtermDebtType

awr:GoldenStateWaterCompany, srt:Maximum, awr:NotePayable956PercentDue2031


Debt
Period End2021-03-31
Value3.0
Percentage of DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod0.0

awr:DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod dei:LegalEntity, us-gaap:StatementScenario, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

awr:GoldenStateWaterCompany, srt:ScenarioForecast, awr:NotePayable956PercentDue2031, us-gaap:SubsequentEvent


Debt
Period End2021-05-24
Value3.0
Percentage of DebtInstrumentRedemptionPremiumAsPercentageOfParValueAfterSpecifiedPeriod100.0

awr:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateIncreaseDecrease us-gaap:RetirementPlanType

awr:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateIncreaseDecrease

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-03-31
Value65.0
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateIncreaseDecrease100.0

awr:DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool us-gaap:RetirementPlanType

awr:DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-350000.0-350000.0-277000.0-385000.0-223000.0-223000.0-392000.0-129000.0-129000.0-129000.0-188000.0-212000.0-176000.0-176000.0-171000.0-223000.0-148000.0-148000.0-258000.0-116000.0-116000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value954000.0954000.0880000.0882000.0895000.0870000.01020000.0952000.0642000.01240000.0766000.0768000.0660000.0876000.0702000.01295000.01339000.01250000.01242000.01256000.01287000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool-272.6-272.6-317.7-229.1-401.3-390.1-260.2-738.0-497.7-961.2-407.4-362.3-375.0-497.7-410.5-580.7-904.7-844.6-481.4-1082.8-1109.5

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value996000.0996000.0702000.0702000.0702000.0683000.0683000.0683000.0758000.0758000.0758000.0652000.0652000.0652000.0465000.0465000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCostBeforeAllocationToOverheadPool-284.6-284.6-182.3-314.8-314.8-529.5-529.5-529.5-357.5-430.7-430.7-292.4-440.5-440.5-400.9-400.9

awr:DerivativeActivityVolume dei:LegalEntity

awr:DerivativeActivityVolume

awr:GoldenStateWaterCompany


Derivative
Period End2021-06-302021-03-31
Value-27924.0445570.0
Percentage of DerivativeActivityVolume100.0100.0

awr:DividendsEquivalentRightsOnShareBasedCompensationNetOfTax

awr:DividendsEquivalentRightsOnShareBasedCompensationNetOfTax


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value42000.049000.041000.039000.052000.051000.050000.070000.058000.048000.056000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:DividendsEquivalentRightsOnShareBasedCompensationNetOfTax dei:LegalEntity

awr:GoldenStateWaterCompany


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value39000.045000.040000.036000.046000.045000.044000.060000.050000.041000.049000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNetOfTax92.991.897.692.388.588.288.085.786.285.487.5

awr:DividendsEquivalentRightsOnShareBasedCompensationNetOfTax dei:LegalEntity, us-gaap:StatementEquityComponents

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value39000.045000.040000.036000.046000.045000.044000.060000.050000.041000.049000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNetOfTax92.991.897.692.388.588.288.085.786.285.487.5

awr:DividendsEquivalentRightsOnShareBasedCompensationNetOfTax us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsUnappropriated


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value42000.049000.041000.039000.052000.051000.050000.070000.058000.048000.056000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax

awr:DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value42000.049000.041000.039000.052000.051000.050000.070000.058000.048000.056000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax dei:LegalEntity

awr:GoldenStateWaterCompany


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value39000.045000.040000.036000.046000.045000.044000.060000.050000.041000.049000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax92.991.897.692.388.588.288.085.786.285.487.5

awr:DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax dei:LegalEntity, us-gaap:StatementEquityComponents

awr:GoldenStateWaterCompany, us-gaap:CommonStock


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value39000.045000.040000.036000.046000.045000.044000.060000.050000.041000.049000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax92.991.897.692.388.588.288.085.786.285.487.5

awr:DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax us-gaap:StatementEquityComponents

us-gaap:CommonStock


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value42000.049000.041000.039000.052000.051000.050000.070000.058000.048000.056000.0
Percentage of DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:GroundwaterProductionAssessment

awr:GroundwaterProductionAssessment


Groundwater
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value5.224.445.2525.9625.034.1484.9425.6344.643.7464.2945.9614.5344.6514.4625.874.9313.3753.8434.4823.9682.72.9913.1464.1223.3893.7664.2914.8533.543.8754.6563.8233.1873.5043.9233.9823.3233.2433.7953.8862.6262.8763.3112.664
Percentage of GroundwaterProductionAssessment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:GroundwaterProductionAssessment dei:LegalEntity

awr:GoldenStateWaterCompany


Groundwater
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value5.224.445.2525.9625.034.1484.9425.6344.643.7464.2945.9614.5344.6514.4625.874.9313.3753.8434.4823.9682.72.9913.1464.1223.3893.7664.2914.8533.543.8754.6563.8233.1873.5043.9233.9823.3233.2433.7953.886
Percentage of GroundwaterProductionAssessment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:IncreaseDecreaseInRelatedPartyReceivablePayableCurrent dei:LegalEntity

awr:IncreaseDecreaseInRelatedPartyReceivablePayableCurrent

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-23000.08000.0-181000.0-120000.0-1212000.0-398000.01105000.0-49000.0641000.0-641000.0314000.0-387000.077000.0-51000.0233000.020000.086000.0-729000.01213000.0-269000.0-422000.0-242000.0117000.0132000.08000.0188000.0-322000.0205000.0149000.0187000.04510000.0-83000.0185000.0-2822000.0822000.0-193000.0150000.0-502000.030000.01292000.0
Percentage of IncreaseDecreaseInRelatedPartyReceivablePayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:IncreaseDecreaseInUnbilledContractsReceivables

awr:IncreaseDecreaseInUnbilledContractsReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5289000.0-3161000.0272000.05874000.01949000.0-1417000.07908000.03131000.02433000.0-7957000.0
Percentage of IncreaseDecreaseInUnbilledContractsReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:IncreaseDecreaseInUnbilledContractsReceivables dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2697000.0-1525000.0-2135000.03228000.01809000.0-1209000.0-1663000.03065000.02779000.0-3437000.0
Percentage of IncreaseDecreaseInUnbilledContractsReceivables51.048.2-784.955.092.885.3-21.097.9114.243.2

awr:IncreaseDecreaseReceivableFromGovernment

awr:IncreaseDecreaseReceivableFromGovernment


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.5691.015-0.9452.2473.291-0.704-5.3041.2510.5872.3226.1580.3117.8786.629-3.387-3.7881.8790.554-1.0171.6483.76-1.7850.927-2.354-0.6561.2353.1670.055-4.0820.463-12.523121.007-8.2518.726-5.876-4.7645.11-2.943-3.9865.9844.734-2.9512.33
Percentage of IncreaseDecreaseReceivableFromGovernment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:NumberOfCustomers dei:LegalEntity, us-gaap:StatementBusinessSegments

awr:NumberOfCustomers

awr:BearValleyElectricServiceInc, awr:ElectricServiceUtilityOperations


Number
Period End2021-06-302021-03-312020-12-31
Value0.00.02450.0
Percentage of NumberOfCustomers0.0100.00.0

awr:GoldenStateWaterCompany, awr:WaterServiceUtilityOperations


Number
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.00.2620.00030.00050.00.2610.00.0010.00.260.00.00.0010.2590.00.0-0.0020.2610.00.00.0010.260.00.0020.00.2580.0010.00.00.2570.0010.00.00.2560.0010.0
Percentage of NumberOfCustomers0.01069.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

awr:PaymentsForProceedsFromRelatedPartyDebt dei:LegalEntity

awr:PaymentsForProceedsFromRelatedPartyDebt

awr:GoldenStateWaterCompany


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value35165-18.0-24.0-6.50.0-34.5-59.5-6.5-1.0-9.0-6.0-5.5-19.5492.5-7.5-6.0-21.0-15.03.0-15.00.00.0
Percentage of PaymentsForProceedsFromRelatedPartyDebt100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

awr:PowerPurchasedForPumping

awr:PowerPurchasedForPumping


Power
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.8612.1452.5083.3692.3981.8592.0983.0421.9821.5381.833.2172.2311.6931.8512.9132.1571.5971.9112.9882.1321.6321.8662.9822.1232.0172.2523.9142.571.9642.1333.4142.3321.6391.7133.0672.0191.5561.7563.1412.1651.5362.0513.4592.047
Percentage of PowerPurchasedForPumping100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:PowerPurchasedForPumping dei:LegalEntity

awr:GoldenStateWaterCompany


Power
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2.8612.1452.5083.3692.3981.8592.0983.0421.9821.5381.833.2172.2311.6931.8512.9132.1571.5971.9112.9882.1321.6321.8662.9822.1232.0172.2523.9142.571.9642.1333.4142.3321.6391.7133.0672.0191.5561.7563.1412.165
Percentage of PowerPurchasedForPumping100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises

awr:ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-30
Value0.00.00.00.030.1030.050.2910.0750.1980.0080.00.340.0250.360.4890.0350.0250.0840.00.1260.4520.2340.220.2920.2190.1510.0180.2010.1630.1161.2070.6250.8619.6861.3451.4031.397
Percentage of ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises0.00.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:ProvisionForDoubtfulAccountsContinuingOperation

awr:ProvisionForDoubtfulAccountsContinuingOperation


Provision
Period End2020-12-312020-09-302020-06-302020-03-31
Value3116000.0871000.0673000.0393000.0
Percentage of ProvisionForDoubtfulAccountsContinuingOperation100.0100.0100.0100.0

awr:ProvisionForDoubtfulAccountsContinuingOperation dei:LegalEntity

awr:GoldenStateWaterCompany


Provision
Period End2020-12-312020-09-302020-06-302020-03-31
Value2836000.0801000.0673000.0393000.0
Percentage of ProvisionForDoubtfulAccountsContinuingOperation91.092.0100.0100.0

awr:ProvisionForDoubtfulAccountsTransferToBVESI dei:LegalEntity

awr:ProvisionForDoubtfulAccountsTransferToBVESI

awr:GoldenStateWaterCompany


Provision
Period End2020-12-312020-09-30
Value158000.0-79000.0
Percentage of ProvisionForDoubtfulAccountsTransferToBVESI100.0100.0

awr:PublicUtilitiesPropertyPlantAndEquipmentDepreciationOnTransportationEquipment dei:LegalEntity

awr:PublicUtilitiesPropertyPlantAndEquipmentDepreciationOnTransportationEquipment

awr:GoldenStateWaterCompany


Public
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value104000.084000.083000.082000.082000.080000.096000.058000.059000.058000.061000.060000.061000.061000.059000.061000.057000.068000.0192000.0175000.0127000.0140000.0151000.0223000.0-20000.0201000.0225000.0272000.0195000.0214000.0218000.0250000.0167000.0484000.0572000.0577000.0
Percentage of PublicUtilitiesPropertyPlantAndEquipmentDepreciationOnTransportationEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc


Public
Period End2021-06-302021-03-31
Value94000.095000.0
Percentage of PublicUtilitiesPropertyPlantAndEquipmentDepreciationOnTransportationEquipment0.00.0

awr:RegulatoryAssetAmountBilledToCustomersAsSurcharges dei:LegalEntity, us-gaap:RegulatoryAsset

awr:RegulatoryAssetAmountBilledToCustomersAsSurcharges

awr:GoldenStateWaterCompany, awr:WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccount


Regulatory
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value1.94.24.43.82.25.50.8322.87.75.64.2119.54.06.55.01.41.586-0.5040.65.84.51.89.17.13.66.74.23.45.24.0
Percentage of RegulatoryAssetAmountBilledToCustomersAsSurcharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:RestructuringAndRelatedCostsNetAssetsTransferred us-gaap:CounterpartyName

awr:RestructuringAndRelatedCostsNetAssetsTransferred

awr:BearValleyElectricServiceInc


Restructuring
Period End2020-07-01
Value71
Percentage of RestructuringAndRelatedCostsNetAssetsTransferred100.0

awr:SupplyCostBalancingAccounts

awr:SupplyCostBalancingAccounts


Supply
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-3.086-2.427-5.197-2.639-1.802-2.165-4.181-2.681.207-1.372-4.539-5.212-2.029-3.869-6.276-4.621-5.293-1.749-2.061-4.213-2.517-3.415-0.6684.8241.8161.8132.4553.179-0.1060.8180.223-1.003-0.3771.3712.1491.964.1633.4374.3745.054.2455.0795.9026.2194.686
Percentage of SupplyCostBalancingAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:SupplyCostBalancingAccounts dei:LegalEntity

awr:GoldenStateWaterCompany


Supply
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-3.411-2.92-4.763-3.019-1.802-2.165-4.181-2.681.207-1.372-4.539-5.212-2.029-3.869-6.276-4.621-5.293-1.749-2.061-4.213-2.517-3.415-0.6684.8241.8161.8132.4553.179-0.1060.8180.223-1.003-0.3771.3712.1491.964.1633.4374.3745.054.245
Percentage of SupplyCostBalancingAccounts110.5120.391.6114.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:UndistributedEarningsAllocatedToCommonStock

awr:UndistributedEarningsAllocatedToCommonStock


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value146.857.78414142.7845.40316162.6793.61126.8941.3673.4311133.7872.307138.4531.9143.3127.5413.9455.259127.4113.1143.869129.5226.4193.396119.6834.7751.4051010
Percentage of UndistributedEarningsAllocatedToCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:WeightedAverageDividendsCommonStock

awr:WeightedAverageDividendsCommonStock


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1212121211111111101010109.3679.3629.3539.3498.8618.8548.858.1898.1888.1818.1938.3268.0168.1388.1818.2447.8537.8467.8397.8366.8546.8396.8136.7665.2875.273
Percentage of WeightedAverageDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value531000.0813000.0358000.0343000.0193000.0338000.0331000.0463000.02093000.0705000.0-181000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition dei:LegalEntity

awr:GoldenStateWaterCompany


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value479000.0782000.0447000.0296000.0254000.0268000.0257000.0572000.02021000.0640000.0-266000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition90.296.2124.986.3131.679.377.6123.596.690.8147.0

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

awr:GoldenStateWaterCompany, us-gaap:CommonStock


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value479000.0782000.0447000.0296000.0254000.0268000.0257000.0572000.02021000.0640000.0-266000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition90.296.2124.986.3131.679.377.6123.596.690.8147.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition us-gaap:StatementEquityComponents

us-gaap:CommonStock


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value531000.0813000.0358000.0343000.0193000.0338000.0331000.0463000.02093000.0705000.0-181000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits

us-gaap:AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits


Amount
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302011-09-302011-06-30
Value40000.020000.048000.051000.09000.075000.075000.013000.069000.036000.08000.061000.076000.018000.079000.051000.010000.073000.044000.021000.074000.043000.018000.078000.0042000.00075000.074000.0
Percentage of AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable dei:LegalEntity

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

awr:GoldenStateWaterCompany


Business
Period End2020-12-31
Value0.0
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable0.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-0.942287.4540.5154.14415-1.8632.166-3.774275.75.6872.10613-1.8474.2015.49112-2.607-1.6450.471216.7890.7562.10711-0.871-0.1071.17312-5.557
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid dei:LegalEntity

awr:GoldenStateWaterCompany


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.702256.977-1.1594.06715-1.8632.166-3.764275.75.6872.13613-1.8474.2165.47312-2.636-1.6450.478216.7890.7582.11910-0.876-0.0221.08712-5.557
Percentage of CapitalExpendituresIncurredButNotYetPaid-74.589.093.6-225.098.1100.0100.0100.099.7100.0100.0100.0101.499.8100.0100.499.7100.0101.1100.0101.5100.0100.0100.3100.699.9100.620.692.7100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.592-29.786281.6316.067-0.905-9.0648.882-0.328-5.297
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect dei:LegalEntity

awr:GoldenStateWaterCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.207-33.126312.6271.0150.03-4.0523.9120.017-3.663
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect-138.6111.2110.1161.116.7-3.344.744.0-5.269.2

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value0.3350.3350.3350.3050.3050.3050.2750.2750.2750.2550.2550.2550.2420.2420.2240.2240.2240.2240.2130.2130.2130.20250.20250.20250.3550.3550.3550.280.280.280.28
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 dei:LegalEntity, us-gaap:ConcentrationRiskByBenchmark, us-gaap:StatementBusinessSegments

us-gaap:ConcentrationRiskPercentage1

awr:GoldenStateWaterCompany, us-gaap:Sales, awr:WaterServiceUtilityOperations


Concentration
Period End2021-03-312020-03-312019-03-312018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302015-09-302015-06-30
Value90.00.90.90.90.90.90.90.90.90.90.9
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

awr:GoldenStateWaterCompanyAndBearValleyElectricServiceInc, us-gaap:Sales, awr:ElectricServiceUtilityOperations


Concentration
Period End2021-03-31
Value90.0
Percentage of ConcentrationRiskPercentage1100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-09-302019-06-302018-09-302018-06-30
Value0.1860.8380.07.16.75.91.73.42.6
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:ContributionOfProperty

us-gaap:ContributionOfProperty


Contribution
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value640000.02761000.0241000.01326000.0679000.0856000.04844000.0135000.0563000.0678000.0114000.01039000.0508000.0421000.0286000.0771000.0924000.0101000.0542000.0508000.03539000.0806000.01579000.0921000.0495000.0289000.0412000.01221000.0
Percentage of ContributionOfProperty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContributionOfProperty dei:LegalEntity

awr:GoldenStateWaterCompany


Contribution
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value640000.02761000.0241000.01326000.0679000.0856000.04844000.0135000.0563000.0678000.0114000.01039000.0508000.0421000.0286000.0771000.0924000.0101000.0542000.0508000.01579000.0921000.0495000.0289000.0412000.0182000.039000.0167000.01221000.0
Percentage of ContributionOfProperty100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0

us-gaap:CostOfPurchasedWater

us-gaap:CostOfPurchasedWater


Cost
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2015231814172318131621161317201712151915131518161212171611121916101118139.5529.85116128.6619.6061513
Percentage of CostOfPurchasedWater100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CostOfPurchasedWater dei:LegalEntity

awr:GoldenStateWaterCompany


Cost
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value2015231814172318131621161317201712151915131518161212171611121916101118139.5529.8511612
Percentage of CostOfPurchasedWater100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 dei:LegalEntity

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

awr:GoldenStateWaterCompany


Debt
Period End2020-07-08
Value50.0
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 dei:LegalEntity, us-gaap:LongtermDebtType

awr:GoldenStateWaterCompany, awr:NotePayable956PercentDue2031


Debt
Period End2021-03-31
Value55.0
Percentage of DebtInstrumentBasisSpreadOnVariableRate10.0

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DeferredIncomeTaxesAndTaxCredits


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.696-0.3430.4760.5330.660.5744.3813.9450.618-2.321-3.041-1.167-2.0050.443.1493.056-0.2776.225164.8194.212.2669.2361.619-1.6871.25535-1.583-1.238-0.4155.4964.8275.5190.27102.3742.363-0.0029.5444.5333.106-3.3220.3377.283
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits dei:LegalEntity

awr:GoldenStateWaterCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.833-0.505-0.176-0.2461.0610.5423.8363.6770.417-2.849-3.02-1.605-2.2640.0724.8312.905-0.136.364174.7013.7732.3089.8181.728-2.1881.36137-1.891-0.858-0.3615.4954.6885.5890.2799.9882.3742.356-0.0059.3454.525
Percentage of DeferredIncomeTaxesAndTaxCredits119.7147.2-37.0-46.2160.894.487.693.267.5122.799.3137.5112.916.4153.495.146.9102.2105.997.689.6101.9106.3106.7129.7108.4105.4119.569.387.0100.097.1101.3103.396.5100.099.7250.097.999.8

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value287000.0287000.0245000.0334000.0199000.0199000.0351000.0150000.0150000.0150000.0193000.0212000.0182000.0182000.0193000.0242000.0170000.0170000.0251000.0150000.0150000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-993000.0-993000.0-483000.0-484000.0-526000.0-442000.0-354000.0-355000.0-351000.0-359000.0-312000.0-314000.0-283000.0-345000.0-230000.0-231000.0-253000.0-209000.0-227000.0-228000.0-329000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-346.0-346.0-197.1-144.9-264.3-222.1-100.9-236.7-234.0-239.3-161.7-148.1-155.5-189.6-119.2-95.5-148.8-122.9-90.4-152.0-219.3

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-419000.0-419000.0-210000.0-211000.0-211000.0-211000.0-117000.0-118000.0-118000.0-118000.0-263000.0-262000.0-262000.0-262000.0-195000.0-194000.0-194000.0-194000.0-73000.0-73000.0-73000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-146.0-146.0-85.7-63.2-106.0-106.0-33.3-78.7-78.7-78.7-136.3-123.6-144.0-144.0-101.0-80.2-114.1-114.1-29.1-48.7-48.7

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value109000.0109000.0108000.0109000.0109000.0109000.0107000.0109000.0109000.0109000.00000000013000.012000.012000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.1340.1340.1260.130.1270.1270.1130.1120.1120.1120.1240.1230.1230.1230.1150.1070.1220.1220.1230.1220.122
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3.1343.1342.9482.952.952.952.5922.5942.5952.5932.7932.7932.7952.7912.4272.4282.242.612.4612.4572.46
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets2338.82338.82339.72269.22322.82322.82293.82316.12317.02315.22252.42270.72272.42269.12110.42269.21836.12139.32000.82013.92016.4

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value31000.031000.052000.044000.056000.056000.045000.080000.080000.080000.073000.075000.072000.072000.081000.073000.085000.085000.080000.097000.097000.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1712000.01712000.01970000.01970000.01986000.01954000.02131000.02132000.02133000.02131000.01910000.01912000.01903000.01921000.01976000.01976000.01985000.01967000.01976000.01978000.02026000.0
Percentage of DefinedBenefitPlanInterestCost5522.65522.63788.54477.33546.43489.34735.62665.02666.22663.82616.42549.32643.12668.12439.52706.82335.32314.12470.02039.22088.7

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value229000.0229000.0247000.0247000.0247000.0247000.0268000.0267000.0267000.0267000.0222000.0222000.0222000.0222000.0224000.0223000.0223000.0223000.0185000.0186000.0186000.0
Percentage of DefinedBenefitPlanInterestCost738.7738.7475.0561.4441.1441.1595.6333.8333.8333.8304.1296.0308.3308.3276.5305.5262.4262.4231.2191.8191.8

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-350000.0-350000.0-277000.0-385000.0-223000.0-223000.0-392000.0-129000.0-129000.0-129000.0-188000.0-212000.0-176000.0-176000.0-171000.0-223000.0-148000.0-148000.0-258000.0-116000.0-116000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1305000.01305000.01001000.01003000.01043000.0963000.01111000.01112000.0984000.01240000.0766000.0768000.0660000.0876000.01028000.01029000.01247000.0817000.01027000.01035000.01223000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-372.9-372.9-361.4-260.5-467.7-431.8-283.4-862.0-762.8-961.2-407.4-362.3-375.0-497.7-601.2-461.4-842.6-552.0-398.1-892.2-1054.3

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value996000.0996000.0754000.0702000.0702000.0702000.0684000.0683000.0683000.0683000.0759000.0758000.0758000.0758000.0656000.0652000.0652000.0652000.0464000.0465000.0465000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-284.6-284.6-272.2-182.3-314.8-314.8-174.5-529.5-529.5-529.5-403.7-357.5-430.7-430.7-383.6-292.4-440.5-440.5-179.8-400.9-400.9

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value40000.040000.042000.035000.047000.047000.027000.053000.053000.053000.056000.048000.057000.057000.056000.053000.059000.059000.043000.068000.068000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1625000.01625000.01388000.01390000.01372000.01408000.01111000.01110000.0986000.01234000.01337000.01335000.01269000.01401000.01249000.01250000.01249000.01251000.01272000.01274000.01316000.0
Percentage of DefinedBenefitPlanServiceCost4062.54062.53304.83971.42919.12995.74114.82094.31860.42328.32387.52781.22226.32457.92230.42358.52116.92120.32958.11873.51935.3

us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value348000.0348000.0297000.0244000.0244000.0244000.0299000.0298000.0298000.0298000.0274000.0274000.0274000.0274000.0234000.0232000.0232000.0232000.0199000.0200000.0200000.0
Percentage of DefinedBenefitPlanServiceCost870.0870.0707.1697.1519.1519.11107.4562.3562.3562.3489.3570.8480.7480.7417.9437.7393.2393.2462.8294.1294.1

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value9.8649.6569.7639.4339.1168.8928.9869.0876.75101010109.7269.9089.9159.7069.744109.3219.7949.965101010109.449101010109.9679.9861012109.8311119.554
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization dei:LegalEntity

awr:GoldenStateWaterCompany


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value8.2788.1268.1847.898.2928.1118.1698.4386.10310109.6819.4919.3949.5729.579.4539.4999.7449.0759.5399.705101010109.126101010109.6889.7029.772119.9419.54510119.334
Percentage of DepreciationAndAmortization83.984.283.883.691.091.290.992.990.492.394.295.194.296.696.696.597.497.597.297.497.497.497.597.597.297.196.697.197.397.397.497.297.297.197.297.297.197.698.197.7

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value1212121111111010109.3679.3626.8146.7665.2875.2415.2365.227
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock dei:LegalEntity

awr:GoldenStateWaterCompany


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302019-03-312018-09-302018-06-302018-03-31
Value12127111111010109.379.38
Percentage of DividendsCommonStock100.3100.3577.4100.0100.199.899.9100.0100.0100.2

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

awr:GoldenStateWaterCompany, us-gaap:RetainedEarningsUnappropriated


Dividends
Period End2021-06-302021-03-312020-06-302020-03-312019-06-302019-03-312018-09-302018-06-302018-03-31
Value121211111010109.379.38
Percentage of DividendsCommonStock100.3100.3100.0100.199.899.9100.0100.0100.2

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsUnappropriated


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1212121111111010109.3679.362
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate


Effective
Period End2021-06-302021-03-31
Value021.0
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate0.0100.0

us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate dei:LegalEntity

awr:GoldenStateWaterCompany


Effective
Period End2021-06-302021-03-31
Value021.0
Percentage of EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate0.0100.0

us-gaap:EnvironmentalRemediationExpense dei:LegalEntity, us-gaap:LossContingenciesByNatureOfContingency

us-gaap:EnvironmentalRemediationExpense

awr:GoldenStateWaterCompany, us-gaap:EnvironmentalIssue


Environmental
Period End2021-06-302021-03-312020-12-31
Value-400000.06400000.0100000.0
Percentage of EnvironmentalRemediationExpense100.0100.0100.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss dei:LegalEntity, us-gaap:DerivativeInstrumentRisk

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

awr:BearValleyElectricServiceInc, us-gaap:CommodityContract


Fair
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value1586000.02761000.01309000.0453000.0-1109000.0-2755000.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges

us-gaap:GainLossOnSalesOfAssetsAndAssetImpairmentCharges


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-40000.05000.004000.017000.0124000.0112000.0042000.025000.018000.0017000.08301000.0000
Percentage of GainLossOnSalesOfAssetsAndAssetImpairmentCharges100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.00.00.00.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2387000.0-1386000.0867000.0476000.0-75000.0-64000.0259000.0-437000.01064000.0-1100000.0698000.0-2237000.0799000.0-4411000.0-280000.02440000.0829000.0-1318000.01269000.0-244000.01153000.0-945000.0-4537000.04542000.0259000.0-1507000.01530000.0-1016000.01192000.0-2735000.0-3007000.0283000.01806000.0-1585000.0-1449000.0339000.0-2317000.0-1989000.0-1215000.02195000.0-251000.01410000.0-503000.0-1935000.0
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsAndOtherReceivables dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value729000.0-1463000.01125000.0130000.078000.031000.0194000.0-436000.0766000.0-835000.0615000.0-1925000.0554000.0-3384000.0-1114000.01629000.0829000.0-800000.01108000.0-301000.0686000.0-597000.0855000.0-1258000.0325000.0-989000.01768000.0-293000.0-84000.0-2061000.0-1768000.0-297000.01255000.0-2441000.0-495000.0-147000.0468000.0-1543000.0-250000.0562000.0
Percentage of IncreaseDecreaseInAccountsAndOtherReceivables30.5105.6129.827.3-104.0-48.474.999.872.075.988.186.169.376.7397.966.8100.060.787.3123.459.563.2-18.8-27.7125.565.6115.628.8-7.075.458.8-104.969.5154.034.2-43.4-20.277.620.625.6

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-2447000.03763000.0-6912000.0-1896000.03716000.0-3689000.01358000.01576000.0
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-361000.0-751000.0-6870000.0-1899000.0-106000.0-492000.0-1522000.01125000.01138000.02896000.0
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInIncomeTaxes


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value-7.163-0.2743.79-2.3567.513.326-7.3710.222-2.2095.572-2.1230.0112.1442.676-10.451-5.432262.853-23.6467.855.1953.608-13.4095.384116.589-25.8613.2195.355.644-6.655-0.488-0.63915-17.1257.6176.0747.603-11.728-0.614-7.3955.1935.536
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-31
Value-3.689-0.3915.057-1.6526.2482.686-9.1471.1440.9244.969-4.058-2.5755.012.5962.419
Percentage of IncreaseDecreaseInIncomeTaxes51.5142.7133.470.183.280.8124.1515.3-41.889.2191.1-23409.1233.797.084.8

us-gaap:IncreaseDecreaseInMaterialsAndSupplies

us-gaap:IncreaseDecreaseInMaterialsAndSupplies


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value22000.0132000.0-80000.0531000.0825000.0914000.0339000.0-99000.0297000.0117000.0153000.0258000.0763000.0-194000.0-582000.0229000.0331000.0523000.0-439000.0-561000.0114000.0-235000.0-459000.01722000.0248000.0316000.0-335000.0252000.0-648000.0-239000.0-628000.0-934000.0-1090000.01862000.0-1230000.01620000.0161000.01727000.0253000.0330000.045000.0281000.058000.0-136000.0
Percentage of IncreaseDecreaseInMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInMaterialsAndSupplies dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-93000.0267000.0-2000.034000.01346000.0788000.0-133000.021000.0351000.0-116000.0123000.0521000.0204000.0-97000.0-569000.0178000.0407000.0306000.0-412000.0-311000.0102000.0-515000.0-404000.01844000.0196000.0433000.0326000.0-7000.0244000.0369000.0-197000.0-221000.0-47000.080000.0-213000.0352000.0102000.077000.0-50000.095000.0
Percentage of IncreaseDecreaseInMaterialsAndSupplies-422.7202.32.56.4163.286.2-39.2-21.2118.2-99.180.4201.926.750.097.877.7123.058.593.855.489.5219.188.0107.179.0137.0-97.3-2.8-37.7-154.431.423.74.34.317.321.763.44.5-19.828.8

us-gaap:IncreaseDecreaseInNotesPayableCurrent

us-gaap:IncreaseDecreaseInNotesPayableCurrent


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value59-5.242-157.01727109.0345625-7.08.010.0132.0-52.06.013
Percentage of IncreaseDecreaseInNotesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-4.8513.101-2.4937.997-3.2650.354-2.7656.042-5.714-2.222-2.9484.396-2.035-0.341-3.425.114-0.47-2.8130.1125.306-3.1960.873-3.4636.921-3.4520.935-3.9524.532-3.51.572-3.097.788-2.7291.155-2.9114.966-2.911.836-4.036.07-2.3151.937-10.0975.936
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-4.222.145-3.1247.272-3.2640.376-3.0116.039-4.95-1.657-3.343.886-1.578-1.025-3.8354.9050.271-3.271-0.3255.396-2.8160.411-3.5046.339-2.8540.377-3.284.372-2.7961.04-3.2767.488-2.1660.808-2.954.707-2.3361.614-4.125.774
Percentage of IncreaseDecreaseInOtherOperatingLiabilities87.069.2125.390.9100.0106.2108.9100.086.674.6113.388.477.5300.6112.195.9-57.7116.3-290.2101.788.147.1101.291.682.740.383.096.579.966.2106.096.179.470.0101.394.880.387.9102.295.1

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets us-gaap:RegulatoryAsset

us-gaap:IncreaseDecreaseInOtherRegulatoryAssets

awr:WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccount


Increase
Period End2021-06-302021-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-03-31
Value4.04.74.16.410.02.36.23.73.24.71110121016118.03.6
Percentage of IncreaseDecreaseInOtherRegulatoryAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value1799000.01796000.01312000.0-2561000.01387000.01306000.01430000.0-2552000.01430000.01686000.01219000.0-4800000.01139000.01356000.01407000.0-5149000.01648000.01216000.01240000.0-4083000.01466000.01088000.01744000.0-4035000.0808000.02099000.01267000.0-6748000.01433000.01692000.02282000.0-1619000.0712000.03021000.02875000.0-1300000.01234000.03145000.03998000.0-4096000.0-547000.02292000.02857000.0-6142000.0
Percentage of IncreaseDecreaseInPensionAndPostretirementObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value1763000.01760000.01258000.0-2561000.01387000.01306000.01430000.0-2552000.01430000.01686000.01219000.0-4800000.01139000.01356000.01407000.0-5149000.01648000.01216000.01240000.0-4083000.01466000.01088000.01744000.0-4035000.0808000.02099000.01267000.0-6748000.01433000.01692000.02282000.0-1619000.0712000.03021000.02875000.0-1300000.01234000.03145000.03998000.0-4096000.0
Percentage of IncreaseDecreaseInPensionAndPostretirementObligations98.098.095.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-2029000.04026000.0-1339000.0-1747000.0-2000000.03400000.0-949000.0-1128000.0-3230000.01329000.0-800000.0148000.0-2007000.03178000.0240000.0299000.0-206000.01308000.0-3388000.0-254000.0-833000.02236000.0-464000.0-184000.0-4242000.03310000.0-1516000.0-281000.0-334000.02395000.0-1198000.0-510000.0-62000.0-140000.0-989000.0-442000.0383000.01480000.0-937000.0-231000.056000.0-1086000.02173000.0396000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-1471000.01956000.0-980000.0-1038000.0-1352000.02246000.0-1646000.0-449000.0-2466000.0331000.0-554000.0248000.0-1811000.02271000.0474000.0351000.0-51000.0676000.0-3257000.013000.0-635000.01765000.0-712000.056000.0-2342000.02558000.0-1123000.0-103000.0-234000.01749000.0-1016000.0-361000.0-23000.0-544000.0-896000.0-416000.0491000.01273000.0-990000.0-135000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets72.548.673.259.467.666.1173.439.876.324.969.2167.690.271.5197.5117.424.851.796.1-5.176.278.9153.4-30.455.277.374.136.770.173.084.870.837.1388.690.694.1128.286.0105.758.4

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value5.3093.493-10.517-6.6284.0192.976-7.5155.189.9453.987-10.889-10.705-5.524-6.716-14.282-14.199-5.1178.972-8.2131.3246.6025.8970.515128.8814.612-8.242-9.375-5.271-3.497
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities dei:LegalEntity

awr:GoldenStateWaterCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value5.3243.165-12.696-7.5774.0192.976-7.5155.189.9453.987-10.889-10.705-5.524-6.716-14.282-14.199-5.1178.972-8.2131.3246.6025.8970.515128.8814.612-8.243-9.307-5.339-3.497
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities100.390.6120.7114.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.3101.3100.0

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities dei:LegalEntity, us-gaap:RetirementPlanType, us-gaap:StatementBusinessSegments

awr:GoldenStateWaterCompany, us-gaap:PensionPlansDefinedBenefit, awr:WaterServiceUtilityOperations


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.3510.3510.121-0.148-0.093
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities6.610.0-1.8-3.7-3.1

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Increase
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value0.3510.3510.1210.1480.0930.160.3420.00.00.0
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities6.610.0-1.83.73.13.13.40.0-0.0-0.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value91000.095000.02000.0116000.0116000.0109000.0-6000.0161000.0159000.0178000.0-4000.0213000.0179000.0162000.018000.0197000.0201000.0192000.01000.0201000.0198000.0176000.025000.0203000.0207000.0203000.03000.0226000.0220000.0197000.08000.0227000.040000.046000.018000.044000.063000.0142000.00151000.070000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value348000.0455000.0437000.0316000.0490000.0558000.0605000.0826000.0876000.0942000.01765000.0641000.0636000.0536000.0590000.0321000.0620000.0259000.0189000.0206000.0190000.0172000.0126000.0118000.0102000.0112000.0468000.0224000.0123000.0112000.0195000.0185000.0140000.0187000.0204000.0419000.0495000.0215000.0359000.0202000.0161000.0137000.01421000.0166000.0158000.0
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest dei:LegalEntity

awr:GoldenStateWaterCompany


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value179000.087000.0114000.0105000.0181000.0318000.0370000.0546000.0543000.0408000.01602000.0451000.0457000.0380000.0591000.0318000.0620000.0237000.0189000.0200000.0190000.0170000.0124000.0115000.097000.0104000.0458000.0214000.0113000.0109000.0149000.0148000.0140000.0178000.0230000.0384000.0469000.0210000.0362000.0149000.0155000.0
Percentage of InvestmentIncomeInterest51.419.126.133.236.957.061.266.162.043.390.870.471.970.9100.299.1100.091.5100.097.1100.098.898.497.595.192.997.995.591.997.376.480.0100.095.2112.791.694.797.7100.873.896.3

us-gaap:NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1 dei:LegalEntity

us-gaap:NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1

awr:GoldenStateWaterCompany


Noncash
Period End2020-12-31
Value0.0
Percentage of NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired10.0

us-gaap:OriginationOfNotesReceivableFromRelatedParties dei:LegalEntity

us-gaap:OriginationOfNotesReceivableFromRelatedParties

awr:GoldenStateWaterCompany


Origination
Period End2021-06-302021-03-31
Value0.023
Percentage of OriginationOfNotesReceivableFromRelatedParties0.0100.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8.5348.2178.6638.1287.9598.4868.218.2677.7088.5717.5258.3557.7827.9888.0057.6578.1726.166.9267.4486.9176.9667.8517.0567.3626.167.2986.9587.0856.9478.6097.1856.5195.4548.1197.3946.8517.4267.3927.5866.9466.9177.457.7887.262
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating dei:LegalEntity

awr:GoldenStateWaterCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value6.3765.8136.0096.1856.376.636.6936.7296.0546.865.9116.576.4196.4346.7356.4937.0964.5535.9286.6046.1566.0836.7856.1096.545.4586.5216.2236.4486.3567.9656.5065.8424.7977.2286.8596.2026.6496.096.9335.842
Percentage of OtherCostAndExpenseOperating74.770.769.476.180.078.181.581.478.580.078.678.682.580.584.184.886.873.985.688.789.087.386.486.688.888.689.489.491.091.592.590.589.688.089.092.890.589.582.491.484.1

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-111000.0-104000.0933000.0136000.0-47000.0-114000.0-382000.0-14000.0-1608000.01478000.0-1221000.0605000.0264000.0-303000.0723000.0279000.0174000.0349000.037000.0172000.0379000.0-191000.0209000.0-621000.0-87000.0-339000.0233000.0-219000.096000.0-165000.0407000.0-128000.0-13000.0172000.0-324000.0102000.0117000.0140000.01220000.0-628000.0-799000.0120000.0-615000.01280000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense dei:LegalEntity

awr:GoldenStateWaterCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-87000.0-83000.0872000.0-155000.0-71000.0-70000.0161000.0-72000.0-1602000.01455000.0-1128000.0622000.0201000.0-280000.0747000.0300000.0199000.0367000.0-15000.0181000.0366000.0-180000.0214000.0-627000.0-80000.0-329000.0285000.0-239000.0116000.0-150000.0436000.0-120000.0-142000.0159000.0-282000.066000.0149000.0174000.0937000.0-96000.0
Percentage of OtherNoncashIncomeExpense78.479.893.5-114.0151.161.4-42.1514.399.698.492.4102.876.192.4103.3107.5114.4105.2-40.5105.296.694.2102.4101.092.097.1122.3109.1120.890.9107.193.81092.392.487.064.7127.4124.376.815.3

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302012-09-302011-09-302010-09-30
Value49000.0-113000.01411000.0-78000.063000.0-121000.01703000.0-95000.029000.0-213000.061000.01590000.032000.0-130000.0-70000.01531000.0-192000.0-40000.01323000.0-65000.00-32000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities dei:LegalEntity

awr:GoldenStateWaterCompany


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value49000.0-109000.0-78000.063000.0-121000.0-95000.029000.0-213000.01590000.032000.0-130000.0-70000.01531000.0-192000.0-40000.0-95000.01326000.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.096.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.2

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2000.01269000.010000.048000.001809000.053000.08000.04000.01569000.036000.03000.04000.01210000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation dei:LegalEntity

awr:GoldenStateWaterCompany


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value01155000.044000.001610000.07000.02000.01308000.02000.04000.01049000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation0.091.091.70.089.087.550.083.466.7100.086.7

us-gaap:PreferredStockDividendsAndOtherAdjustments

us-gaap:PreferredStockDividendsAndOtherAdjustments


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value35000.037000.042000.043000.040000.037000.043000.050000.046000.047000.053000.054000.051000.046000.058000.050000.048000.042000.046000.048000.050000.045000.073000.047000.047000.045000.044000.048000.047000.043000.048000.048000.095000.0107000.052000.052000.038000.035000.038000.038000.036000.0
Percentage of PreferredStockDividendsAndOtherAdjustments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromAdvancesForConstruction

us-gaap:ProceedsFromAdvancesForConstruction


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.8212.0161.7622.9461.1083.5221.9111.974.3631.927
Percentage of ProceedsFromAdvancesForConstruction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromAdvancesForConstruction dei:LegalEntity

awr:GoldenStateWaterCompany


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.8012.0131.7622.9461.1083.5221.9111.974.3631.927
Percentage of ProceedsFromAdvancesForConstruction99.699.9100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment