PNW


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

Table of contents



us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
dei:LegalEntity

us-gaap:CostOfGoodsAndServicesSoldDepreciationAndAmortization
dei:LegalEntity

us-gaap:CostsAndExpenses
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeTaxExpenseBenefit
dei:LegalEntity

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense
dei:LegalEntity

us-gaap:InterestPaidNet
dei:LegalEntity

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
dei:LegalEntity

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

us-gaap:OperatingIncomeLoss
dei:LegalEntity

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

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

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

us-gaap:Revenues
dei:LegalEntity

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

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

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

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

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
dei:LegalEntity
us-gaap:ConsolidatedEntities

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

us-gaap:PropertyPlantAndEquipmentGross
dei:LegalEntity

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity
us-gaap:PublicUtility

us-gaap:IntangibleAssetsNetExcludingGoodwill
dei:LegalEntity
us-gaap:PublicUtility

us-gaap:OperatingLeaseRightOfUseAsset
dei:LegalEntity

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

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

us-gaap:ContractWithCustomerLiabilityCurrent
dei:LegalEntity

us-gaap:DividendsPayableCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

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

us-gaap:OperatingLeaseLiabilityCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

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

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

us-gaap:LongTermDebtNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:DebtAndCapitalLeaseObligations
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxLiabilitiesNet
dei:LegalEntity

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

us-gaap:MinorityInterest
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities

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

us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:OperatingLeaseLiability
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
us-gaap:PropertyPlantAndEquipmentByType

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

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

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

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

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

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

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

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
dei:LegalEntity

us-gaap:DeferredIncomeTaxExpenseBenefit
dei:LegalEntity

us-gaap:DepreciationDepletionAndAmortization
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccountsPayable
dei:LegalEntity

us-gaap:IncreaseDecreaseInInventories
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

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

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:PaymentsToAcquireProductiveAssets
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity

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

us-gaap:PaymentsOfDividendsCommonStock
dei:LegalEntity

us-gaap:DeferredTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsNet
dei:LegalEntity

us-gaap:UnrecognizedTaxBenefits
dei:LegalEntity
dei:LegalEntity
pnw:AllRiskInsuranceForPropertyDamageAndDecontaminationAtPaloVerde
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding
pnw:AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:SubsequentEventType
dei:LegalEntity
pnw:AnnualPaymentLimitationWithRespectToMaximumPotentialRetrospectiveAssessment
dei:LegalEntity, pnw:SaleLeasebackTransactionPeriod, us-gaap:ConsolidatedEntities
pnw:AnnualRentalPaymentsSaleLeasebackTransaction
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:EnvironmentalRemediationContingency, us-gaap:JointlyOwnedUtilityPlant
pnw:AssetPurchaseAgreementAdditionalPercentageShareofCostofControl
dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:EnvironmentalRemediationSite
pnw:AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate
dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:EnvironmentalRemediationSite, us-gaap:JointlyOwnedUtilityPlant
dei:LegalEntity, us-gaap:Range, us-gaap:EnvironmentalRemediationContingency, us-gaap:EnvironmentalRemediationSite
dei:LegalEntity
pnw:CollateralAssuranceBasedOnRatingTriggers
dei:LegalEntity, us-gaap:LossContingenciesByNatureOfContingency
pnw:CostsRelatedToInvestigationAndStudyUnderSuperfundSite

pnw:DeferredInvestmentTaxCredit
dei:LegalEntity

pnw:DividendsCommonStockNet
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
dei:LegalEntity
pnw:EmployeeMedicalClaimsAmount
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:ForwardComponentofPSARate1
dei:LegalEntity, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:HistoricalComponentofPSARate1
dei:LegalEntity, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:IncreaseDecreaseInOtherNonCurrentAssets
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding
pnw:IncreaseDecreaseinAmountofAdjustmentRepresentingProratedSalesLosses
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:LitigationCase
pnw:LitigationSettlementAmountAwardedToCustomers
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:SubsequentEventType
dei:LegalEntity
pnw:MaximumAmountthatCouldbeIncurredunderRetrospectiveAssessmentofNEILPolicies
dei:LegalEntity
pnw:MaximumAssessmentPerReactorForEachNuclearIncident
dei:LegalEntity
pnw:MaximumPotentialRetrospectiveAssessmentPerIncident

pnw:MiscellaneousOtherNonoperatingExpense
dei:LegalEntity

pnw:MiscellaneousOtherNonoperatingIncome
dei:LegalEntity

pnw:NonoperatingCosts
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:PSARate1
dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:PSARateInPriorYears1
dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds
dei:LegalEntity
dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:JointlyOwnedUtilityPlant
pnw:PercentageOfShareOfCostOfControl

pnw:ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds
dei:LegalEntity

pnw:ProceedsfromRepaymentsofShorttermDebtNet
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMatterPotentialExpenses
dei:LegalEntity, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMatterRequestSecondYearEnergyPriceforExportedEnergy1
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersAmountAuthorizedToBeCollected
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersIncreaseDecreaseInCostRecoveryWholesaleCustomerRates
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersIncreaseDecreaseInRetailRevenueRequirements
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersIncreaseDecreaseinCostRecovery
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersIncreaseDecreaseinCostRecoveryExcessOfAnnualAmount
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersIncreaseDecreaseinCostRecoveryRetailCustomerRates
dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant, us-gaap:SubsequentEventType
pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactCostDeferrals
dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant, us-gaap:SubsequentEventType
pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactDisallowanceOfInvestments
dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant
pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactEstimatedWriteoffOfCostDeferrals
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RegulatoryClauseDeferredFuelAndPurchasedPowerCostsAmountAboveAnnualCap
dei:LegalEntity, us-gaap:RegulatoryAsset
pnw:RegulatoryCostRecoveryIncomeDebtDeferralRefunded
us-gaap:RegulatoryAsset

pnw:RegulatoryCostRecoveryRevenue
dei:LegalEntity
pnw:RemainingNuclearLiabilityInsuranceThroughMandatoryIndustryWideRetrospectiveAssessmentProgram
dei:LegalEntity, us-gaap:ConsolidatedEntities
pnw:VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForFundsUsedDuringConstructionInvestingActivities
dei:LegalEntity
dei:LegalEntity
us-gaap:AssetRetirementObligationAccretionExpense
dei:LegalEntity
us-gaap:AssetRetirementObligationLiabilitiesSettled
dei:LegalEntity
us-gaap:AssetRetirementObligationRevisionOfEstimate
dei:LegalEntity
us-gaap:AvailableForSaleSecuritiesGrossRealizedGains
dei:LegalEntity, us-gaap:InvestmentType
dei:LegalEntity
us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses
dei:LegalEntity, us-gaap:InvestmentType

us-gaap:CapitalExpendituresIncurredButNotYetPaid
dei:LegalEntity

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
us-gaap:DebtInstrumentBasisSpreadOnVariableRate1
dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleRealizedGain
dei:LegalEntity, us-gaap:InvestmentType
dei:LegalEntity
us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss
dei:LegalEntity, us-gaap:InvestmentType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanAssetsTransferredToFromPlan
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType, us-gaap:SubsequentEventType
us-gaap:SubsequentEventType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNonmonetaryNotionalAmountVolume

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

us-gaap:GainLossOnSaleOfInvestments

us-gaap:GainOnSaleOfInvestments

us-gaap:IncomeLossIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:IncomeTaxReconciliationDeductionsOther
us-gaap:IncomeTaxAuthority

us-gaap:IncreaseDecreaseInAccountsAndNotesReceivable
dei:LegalEntity

us-gaap:IncreaseDecreaseInAccruedTaxesPayable
dei:LegalEntity

us-gaap:IncreaseDecreaseInContractWithCustomerAsset
dei:LegalEntity

us-gaap:IncreaseDecreaseInIncomeTaxesReceivable
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherAccruedLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherCurrentAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherOperatingAssets
dei:LegalEntity

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities
dei:LegalEntity

us-gaap:IncreaseDecreaseInPrepaidExpense
dei:LegalEntity

us-gaap:IncreaseDecreaseInRegulatoryClauseRevenue
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

us-gaap:InterestCostsIncurred
dei:LegalEntity

us-gaap:InvestmentIncomeInterest
dei:LegalEntity

us-gaap:LeaseCost
us-gaap:PropertyPlantAndEquipmentByType
dei:LegalEntity, us-gaap:LitigationCase
us-gaap:LitigationSettlementAmountAwardedFromOtherParty
us-gaap:LitigationCase
dei:LegalEntity, us-gaap:LitigationCase
us-gaap:LitigationSettlementAmountAwardedToOtherParty
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:SubsequentEventType

us-gaap:OperatingLeaseCost
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:OperatingLeasePayments

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

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
dei:LegalEntity

us-gaap:OtherCostAndExpenseOperating
dei:LegalEntity

us-gaap:OtherNonoperatingExpense
dei:LegalEntity

us-gaap:OtherNonoperatingIncome
dei:LegalEntity

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
dei:LegalEntity

us-gaap:PaymentsToMinorityShareholders
dei:LegalEntity

us-gaap:PensionAndOtherPostretirementBenefitExpense
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:IncomeStatementLocation
us-gaap:PriceRiskCashFlowHedgeGainOrLossReclassifiedToEarningsNet

us-gaap:ProceedsFromContributionInAidOfConstruction
dei:LegalEntity

us-gaap:ProceedsFromLinesOfCredit
dei:LegalEntity

us-gaap:ProceedsFromRepurchaseOfEquity
dei:LegalEntity
us-gaap:ProceedsFromSaleOfAvailableForSaleSecurities
dei:LegalEntity, us-gaap:InvestmentType
dei:LegalEntity
us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
dei:LegalEntity, us-gaap:InvestmentType

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions
dei:LegalEntity

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
dei:LegalEntity

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

us-gaap:RepaymentsOfLinesOfCredit
dei:LegalEntity
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility, us-gaap:SubsequentEventType

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
dei:LegalEntity
dei:LegalEntity, pnw:SaleLeasebackTransactionPeriod, us-gaap:ConsolidatedEntities
us-gaap:SaleLeasebackTransactionAnnualRentalPayments

us-gaap:ShortTermLeaseCost
us-gaap:PropertyPlantAndEquipmentByType
dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:JointlyOwnedUtilityPlant
us-gaap:SiteContingencyLossExposureNotAccruedBestEstimate

us-gaap:StockIssuedDuringPeriodValueTreasuryStockReissued
us-gaap:StatementEquityComponents

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

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

us-gaap:TaxesExcludingIncomeAndExciseTaxes
dei:LegalEntity

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
us-gaap:UnrecordedUnconditionalPurchaseObligationPurchases

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations
dei:LegalEntity

us-gaap:VariableLeaseCost
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:WeightedAverageNumberOfSharesRestrictedStock

dei:EntityCommonStockSharesOutstanding

pnw:AccumulatedAmortizationOnNuclearFuel
dei:LegalEntity
us-gaap:RetirementPlanType
pnw:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTax
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:JointlyOwnedUtilityPlant
pnw:AssetPurchaseAgreementOperatingandMaintenanceCostReimbursementReceivable

pnw:AssetsFairValueGrossLiabilityandNetPendingSecuritiesSalesandPurchases
dei:LegalEntity, us-gaap:FinancialInstrument
pnw:AvailableforsaleSecuritiesOther
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity
pnw:AverageAnnualCustomerBillIncreasePercent
dei:LegalEntity, us-gaap:SubsequentEventType

pnw:CoalReclamationandUnionTrust
dei:LegalEntity

pnw:CommonStockValueCommonAndTreasury

pnw:ConstructionWorkInProgressGross
dei:LegalEntity
us-gaap:PublicUtility

pnw:ConstructioninProgress
dei:LegalEntity
dei:LegalEntity
pnw:DebtInstrumentCovenantConsolidatedDebtToTotalConsolidatedCapitalizationRatioActual
us-gaap:ConsolidatedEntities
dei:LegalEntity, us-gaap:FinancialInstrument
pnw:DebtSecuritiesAvailableForSaleOther
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType

pnw:DecommissioningFundInvestmentsFairValueNetPendingSecuritiesSalesandPurchases
us-gaap:FinancialInstrument
dei:LegalEntity, us-gaap:FinancialInstrument
pnw:DecommissioningandOtherSpecialUseFundInvestmentsFairValue
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType

pnw:DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:DeferredFuelandPurchasedPowerRegulatoryAssetLiabilityCurrent

pnw:DeferredTaxAssetsCoalReclamationLiabilities
dei:LegalEntity

pnw:DeferredTaxAssetsCreditAndLossCarryforwards
dei:LegalEntity

pnw:DeferredTaxAssetsExcessDeferredIncomeTaxes
dei:LegalEntity

pnw:DeferredTaxAssetsOperatingLeaseLiability
dei:LegalEntity

pnw:DeferredTaxAssetsRegulatoryLiabilitiesAssetRetirementObligationAndRemovalCosts
dei:LegalEntity

pnw:DeferredTaxAssetsRegulatoryLiabilitiesOther
dei:LegalEntity

pnw:DeferredTaxAssetsRegulatoryLiabilitiesOtherPostretirementBenefits
dei:LegalEntity

pnw:DeferredTaxAssetsRegulatoryLiabilitiesUnamortizedInvestmentTaxCredits
dei:LegalEntity

pnw:DeferredTaxAssetsRenewableEnergyIncentives
dei:LegalEntity

pnw:DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets
dei:LegalEntity

pnw:DeferredTaxLiabilitiesOtherSpecialUseFunds
dei:LegalEntity

pnw:DeferredTaxLiabilitiesPensionAndOtherPostretirementAssets
dei:LegalEntity

pnw:DeferredTaxLiabilitiesRegulatoryAssetsAllowanceForEquityFundsUsedDuringConstruction
dei:LegalEntity

pnw:DeferredTaxLiabilitiesRegulatoryAssetsDeferredFuelAndPurchasedPowerMarkToMarket
dei:LegalEntity

pnw:DeferredTaxLiabilitiesRegulatoryAssetsOther
dei:LegalEntity

pnw:DeferredTaxLiabilitiesRegulatoryAssetsPensionAndOtherPostretirementBenefits
dei:LegalEntity

pnw:DeferredTaxLiabilitiesRegulatoryAssetsRetiredPowerPlanCosts
dei:LegalEntity

pnw:DefinedBenefitPlanAccumulatedBenefitObligationFundedPercentage
us-gaap:RetirementPlanType
pnw:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeRegulatoryAsset
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
pnw:DefinedBenefitPlanAlternativeInvestmentsFairValueofPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType
pnw:DefinedBenefitPlanGrossFairValueofPlanAssets
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:RetirementPlanType

pnw:DefinedBenefitPlanPartnershipFundingCommitmentsMaximumContributionAmount

pnw:DefinedBenefitPlanPost65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation

pnw:DefinedBenefitPlanPre65HealthCareCostTrendRateAssumedforNextFiscalYearUsedinCalculatingBenefitObligation
us-gaap:DerivativeInstrumentRisk
pnw:DerivativeAssetLiabilityAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
pnw:DerivativeAssetLiabilityFairValueAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
pnw:DerivativeAssetLiabilityFairValueGrossAssetLiability
dei:LegalEntity
pnw:EquityAndLongTermDebtLessCurrentMaturitiesAndLeaseback

pnw:EquityContributionGuarantees
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:FuelAndPurchasedPowerCostsExcessAnnualLimit
us-gaap:ConsolidatedEntities
pnw:InvestmentInSubsidiaries

pnw:LeaseNotyetCommencedLiabilityLeaseandNonleasePayments

pnw:LiabilitiesForAssetRetirementObligationsNoncurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:CreditFacility
pnw:LineOfCreditFacilityCommercialPaperProgramMaximumBorrowingCapacity
us-gaap:DerivativeInstrumentRisk
pnw:NonDerivativeCreditRiskContractAdditionalCollateralAggregateFairValue

pnw:ProductionTaxCreditGuarantees
dei:LegalEntity
pnw:PublicUtilitiesAlternativePercentage
dei:LegalEntity, us-gaap:SubsequentEventType
dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, pnw:PublicUtilityProgram, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
pnw:PublicUtilitiesDisallowanceOfAnnualAmortizationPercentage
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
pnw:PublicUtilitiesEffectiveFairValueRatePercentage
dei:LegalEntity
pnw:PublicUtilitiesIncrementOfFairValueRatePercentage
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:SubsequentEventType

pnw:PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet
dei:LegalEntity
dei:LegalEntity
pnw:PublicUtilitiesRecommendedReturnOnEquityPercentage
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
pnw:PublicUtilitiesReductionOfEquityRatePercentage
dei:LegalEntity, us-gaap:RegulatoryAgency
pnw:PublicUtilityOrderShortTermDebtAuthorizationAsPercentageOfCapitalization
dei:LegalEntity, us-gaap:RegulatoryAgency
pnw:PublicUtilityOrderShortTermDebtAuthorizationFixedAmount
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMatterProposedBudget
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
pnw:RateMattersRevenueRequirements

pnw:RatePlanComparisonToolNumberOfCustomers
dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant
pnw:RecommendedRateAdjustmentPropertyPlantAndEquipmentSCRPlantInvestmentsNetOfDeferredTaxes

pnw:RegulatoryAssetIncludingDeferredFuelAndPurchasedPowerRegulatoryAssetCurrent
us-gaap:RegulatoryAsset
dei:LegalEntity, us-gaap:RegulatoryAsset
pnw:RegulatoryAssetNetBookValue

pnw:RegulatoryLiabilityIncludingDeferredFuelAndPurchasedPowerRegulatoryLiabilityCurrent
us-gaap:RegulatoryAgency, us-gaap:RegulatoryLiability
us-gaap:RegulatoryLiability
dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, pnw:PublicUtilityProgram, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
pnw:RegulatoryMattersAmountFundedByCustomers
dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, pnw:PublicUtilityProgram
pnw:RegulatoryMattersAmountsFundedByShareholders
dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, pnw:PublicUtilityProgram, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, pnw:PublicUtilityProgram
dei:LegalEntity
pnw:RegulatoryMattersBillCredits
dei:LegalEntity
pnw:RegulatoryMattersCustomerCOVIDAssistance
dei:LegalEntity, us-gaap:SubsequentEventType
pnw:RegulatoryMattersCustomerSupportFundCOVID19Support
dei:LegalEntity
pnw:RegulatoryMattersCustomerSupportFundNonprofitsandCommunityOrganizations
dei:LegalEntity, us-gaap:SubsequentEventType
dei:LegalEntity
pnw:RegulatoryMattersDemandSideManagementFundsCustomerCredits
dei:LegalEntity
pnw:RegulatoryMattersDemandSideManagementFundsCustomerCreditsAdditionalFunds
dei:LegalEntity
pnw:RegulatoryMattersNonCustomerFunds
dei:LegalEntity
pnw:RegulatoryMattersRevenueIncreaseDecrease
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:SubsequentEventType
dei:LegalEntity
pnw:RegulatoryMattersVoluntaryFunds
dei:LegalEntity
pnw:RegulatoryMattersVoluntaryFundsThresholdForDeferralOfPotentialRecovery

pnw:SpecialUseFundInvestmentsOtherGrossFairValue
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

pnw:SpecialUseFundInvestmentsOtherNetFairValuePendingSalesandPurchases
us-gaap:FinancialInstrument

pnw:TotalDeferredDebits
dei:LegalEntity

pnw:TotalInvestmentsAndOtherAssets
dei:LegalEntity
us-gaap:ConsolidatedEntities
dei:LegalEntity
pnw:TotalLongTermDebtLessCurrentMaturities
us-gaap:ConsolidatedEntities

pnw:UnrecognizedTaxBenefitsInterestOnIncomeTaxesReceivable
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
pnw:UnrecordedUnconditionalPurchaseObligationPresentValue

us-gaap:AccountsReceivableGrossCurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedDeferredInvestmentTaxCredit
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
us-gaap:DerivativeInstrumentRisk
us-gaap:AdditionalCollateralAggregateFairValue

us-gaap:AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
dei:LegalEntity

us-gaap:AssetRetirementObligation
dei:LegalEntity

us-gaap:AssetRetirementObligationCurrent
dei:LegalEntity

us-gaap:AssetRetirementObligationsNoncurrent
dei:LegalEntity

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
dei:LegalEntity
us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedGainBeforeTax
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleEquitySecuritiesAccumulatedGrossUnrealizedLossBeforeTax
dei:LegalEntity
us-gaap:AvailableForSaleSecurities
dei:LegalEntity, us-gaap:InvestmentType
dei:LegalEntity
us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
dei:LegalEntity
us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtSecurities
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesEquitySecurities
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired

us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:CommercialPaper
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:ContractWithCustomerAssetNetCurrent
dei:LegalEntity

us-gaap:ContractWithCustomerLiabilityNoncurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:DebtInstrumentCarryingAmount
dei:LegalEntity, us-gaap:DebtInstrument
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:CreditFacility
us-gaap:DebtInstrumentFaceAmount
dei:LegalEntity
us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:DebtInstrumentUnamortizedPremium

us-gaap:DecommissioningTrustAssetsAmount

us-gaap:DeferredCreditsAndOtherLiabilities
dei:LegalEntity
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:DeferredFinanceCostsNet
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsDerivativeInstruments
dei:LegalEntity

us-gaap:DeferredTaxAssetsOther
dei:LegalEntity
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsTaxCreditCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesDerivatives
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesOther
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
dei:LegalEntity
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
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:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:RetirementPlanType

us-gaap:DerivativeAssetFairValueGrossLiability
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetFairValueGrossLiabilityAndObligationToReturnCashOffset
us-gaap:DerivativeInstrumentRisk
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssets
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeInstrumentsAndHedges
dei:LegalEntity

us-gaap:DerivativeInstrumentsAndHedgesLiabilities
dei:LegalEntity

us-gaap:DerivativeLiabilities
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk

us-gaap:DerivativeLiabilitiesNoncurrent
dei:LegalEntity

us-gaap:DerivativeLiabilityFairValueGrossAsset
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityFairValueGrossAssetAndRightToReclaimCashOffset
us-gaap:DerivativeInstrumentRisk
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilityNotSubjectToMasterNettingArrangement
us-gaap:DerivativeInstrumentRisk
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:DerivativeNetLiabilityPositionAggregateFairValue
us-gaap:DerivativeInstrumentRisk

us-gaap:DividendsPayableCurrentAndNoncurrent
dei:LegalEntity

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EnergyRelatedInventoryOtherFossilFuel
dei:LegalEntity
dei:LegalEntity, us-gaap:FinancialInstrument
us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent
dei:LegalEntity, us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
dei:LegalEntity

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:IncomeTaxesReceivable
us-gaap:ConsolidatedEntities

us-gaap:InterestPayableCurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:Investments
dei:LegalEntity, us-gaap:InvestmentType
dei:LegalEntity, us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
dei:LegalEntity, us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
dei:LegalEntity, us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
dei:LegalEntity, us-gaap:JointlyOwnedUtilityPlant
us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:PropertyPlantAndEquipmentByType
dei:LegalEntity, us-gaap:CreditFacility
us-gaap:LettersOfCreditOutstandingAmount
dei:LegalEntity, us-gaap:DebtInstrument

us-gaap:LiabilityForUncertainTaxPositionsNoncurrent
dei:LegalEntity
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
us-gaap:LineOfCredit
us-gaap:CreditFacility
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:CreditFacility
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility, us-gaap:DebtInstrument
dei:LegalEntity, us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:ConsolidatedEntities, us-gaap:CreditFacility
us-gaap:CreditFacility

us-gaap:LongTermDebtFairValue
dei:LegalEntity
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:ConsolidatedEntities
dei:LegalEntity, us-gaap:Range, us-gaap:DebtInstrument
us-gaap:LongtermDebtWeightedAverageInterestRate

us-gaap:MineReclamationAndClosingLiabilityNoncurrent
dei:LegalEntity

us-gaap:NotesReceivableNet
dei:LegalEntity, us-gaap:JointlyOwnedUtilityPlant
us-gaap:NotesReceivableRelatedParties

us-gaap:NuclearFuelNetOfAmortization
dei:LegalEntity
us-gaap:PublicUtility

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherDeferredCostsNet
dei:LegalEntity

us-gaap:OtherInventorySupplies
dei:LegalEntity

us-gaap:OtherLongTermDebtCurrent
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:PublicUtility
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
us-gaap:PublicUtility
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDistribution
us-gaap:PublicUtility
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet
dei:LegalEntity
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:PublicUtility
us-gaap:PublicUtility
us-gaap:PublicUtility
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment
us-gaap:PublicUtility
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService
us-gaap:PublicUtility
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentTransmission

us-gaap:RegulatoryAssetsCurrent
dei:LegalEntity

us-gaap:RegulatoryAssetsNoncurrent
dei:LegalEntity
us-gaap:RegulatoryAsset

us-gaap:RegulatoryLiabilityCurrent
dei:LegalEntity

us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity
us-gaap:RegulatoryAgency, us-gaap:RegulatoryLiability
us-gaap:RegulatoryLiability

us-gaap:SaleLeasebackTransactionAccumulatedDepreciation
dei:LegalEntity
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:ShortTermBorrowings
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
dei:LegalEntity

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
dei:LegalEntity
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
dei:LegalEntity
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
dei:LegalEntity
us-gaap:UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears
dei:LegalEntity, us-gaap:UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Cash And Cash Equivalents At Carrying Value
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Other Assets Noncurrent
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Derivative Liabilities
Current Liabilities
Contract With Customer Liability Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
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 Undiscounted Excess Amount

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ███▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▆▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁2692.0152687.0522677.4822670.3582665.5182664.3872659.5612654.432648.2342644.0632634.2652629.6272624.6722620.2612614.8052608.8252604.4822595.0422596.032552.9792549.4982547.0652541.6682529.0192526.9452523.2472512.972502.2172500.0642497.4852491.5582489.182486.8712484.3472466.9232456.1072453.4532450.2962444.2472441.6212438.2562434.7842421.372NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁113.223113.093NA112.987112.879112.862NA112.746112.651112.735NA112.533112.471112.493NA112.401112.345112.195NA112.1112.004111.847NA111.616111.46111.377NA111.103111.002110.888NA111.053110.932110.835NA110.655110.359109.299NA109.861109.718108.832NA109.094107.764101.474
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁112.882112.829NA112.679112.638112.594NA112.463112.337112.337NA112.148112.115112.017NA111.835111.797111.728NA111.416111.368111.296NA111.036110.986110.916NA110.686110.565110.257NA110.009109.962109.832NA109.555109.491109.299NA109.128109.044108.832NA108.632107.355101.474
us-gaap:EarningsPerShareBasic ▅▂▁█▅▂▃▇▄▂▂▇▅▁▂▇▅▂▂▆▄▁▂▆▄▂▁▆▄▂▂▆▄▂▂▆▄▁▂▆▃▁▁▆▄▁1.910.32-0.169999999999999933.071.720.270.572.781.280.160.232.811.490.030.192.471.50.210.482.361.090.040.372.321.110.150.052.21.20.140.222.061.190.220.212.231.12-0.080.122.340.8-0.140.039999999999999592.151.07-0.06
us-gaap:EarningsPerShareDiluted ▆▂▁█▅▂▃▇▄▂▂▇▅▁▂▇▅▂▂▆▄▁▂▆▄▂▁▆▄▂▂▆▄▂▂▆▄▁▂▆▃▁▁▆▄▁1.910.32-0.179999999999999723.071.710.270.572.771.280.160.232.81.480.030.192.461.490.210.472.351.080.040.372.31.10.140.052.21.190.140.222.041.180.220.22.211.11-0.080.112.320.79-0.140.049999999999999822.141.07-0.06
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Cost Ratio dei:LegalEntity pnw:ArizonaPublicServiceCompany▅▁▂█▄▁▁▇▃▂▂█▅▁▂▇▄▁1000.249696.475740.9611254.501929.59661.93670.3911190.787869.501740.53756.3761267.997971.963692.006757.8111178.846943.406677.589NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity pnw:ArizonaPublicServiceCompanyNANANA1254.501929.59661.93NA1190.787869.501740.53NA1267.997971.963692.006NA1178.846943.406677.589NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity pnw:ArizonaPublicServiceCompany▅▁▂█▄▁▁▇▃▂▂█▅▁▂▇▄▁1000.249696.475740.9611254.501929.59661.93670.3911190.787869.501740.53756.3761267.997971.963692.006757.8111178.846943.406677.589NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity pnw:ArizonaPublicServiceCompany▅▁▂█▄▁▁▇▃▂▂█▅▁▂▇▄▁1000.249696.475740.9611254.501929.59661.93670.3911190.787869.501740.53756.3761267.997971.963692.006757.8111178.846943.406677.589NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 TTM Greenblatt ROC _ _▅▂▁█▅▁▁▇▄▂▂▇▅▁▂█▆▂▃█▄▂▃█▄▂▂▇▅▂▂▇▅▂▂█▅▂▂█▄▁▂278.38647.53430.848455.008261.87440.42211.997403.29196.58960.08466.884433.307242.16231.33490.61466.082304.22973.506122.816451.258231.74850.162109.834445.111231.97367.68460.184421.775254.11375.1783.9415.688259.81286.923101.289447.97254.48948.00778.715435.017196.99237.14165.252NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▆▂▁█▅▂▂▇▄▂▂▇▅▂▂▇▅▂▂▆▄▂▃▆▄▂▁▆▄▂▂▆▄▂▂▇▄▁▁▇▃▁216.63136.925-24.696346.756191.28931.5153.423313.374143.0119.12533.442316.562162.4554.43418.744277.581166.6824.27151.57264.6121.3595.43160.359258.726123.68417.881-0.329255.776133.14318.91735.542241.285134.68130.52128.098275.666139.804-23.871-18.055276.4993.331-4.689NANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▂▁█▅▂▃▇▄▂▂▇▅▂▂▇▅▂▃▇▄▂▃▆▄▂▂▆▄▂▂▆▄▂▂▇▄▁▁▇▃▂▂▆▄220.3741.798-19.823351.629196.16336.38358.296318.247147.88423.99838.315321.435167.3299.30723.617282.454171.55429.14456.443269.473126.23310.30465.22263.588128.28922.4863.796259.901142.06927.84244.096249.84143.07238.91336.138283.706147.57-16.095-38.096283.916100.4850.7725.838234.958128.636NA
us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization ▄▁▂█▃▁▃█▃▃269.835198.227213.345353.171238.382188.521224.565344.862242.222230.588NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSoldDepreciationAndAmortization ██▇▇▇▇▅▆▆▆▅▅▅▅▅▃▁158.75157.82155.121152.696152.482154.079145.398149.45147.374148.707146.122145.971145.436144.825146.84133.912125.739NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostsAndExpenses ▅▃▅▇▄▃▃▇▄▄▄█▅▄▄▅▃▂▂▅▄▃▃▆▃▂▄▆▃▂▂▅▃▂▂▄▃▁▂▄▂▃▄▅▂▁721.863648.941710.113799.493667.716621.508658.394787.497672.912680.446689.492834.727731.961661.38669.049717.24640.358604.222616.383715.664683.646627.005624.596754.035658.675603.535666.266750.892652.151611.081615.862736.704656.01599.729591.833661.505624.087572.624589.177689.824602.807622.434666.626716.436601.411562.687
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest NANANA428.479239.5214.657NA370.415166.09925.209NA404.218215.6516.829NA425.264261.28432.396NA409.346191.92411.24NA401.533194.87828.67414.542382.839215.92431.09641.981366.63216.64145.30553.062399.99207.619-4.36126.919384.689144.003-16.3735.271351.909144.502NA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity pnw:ArizonaPublicServiceCompanyNANANA437.097245.66920.77NA379.897173.51334.602NA428.772228.47516.578NA435.663262.50736.683NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▄▃▆▅▃▁▅▄▄▄▆▅▄▄█▆▄▄█▆▄▄█▆▄▄█▆▄▄█▆▄▄█▆▃▄█▅▃▄▇▅▃46.56-4.35-19.91377.23441.061-20.209-88.53753.26617.082.4186.79584.33344.039-1.26520.775144.31988.9674.21127.309141.44665.7421.91422.847139.55567.3717.9475.007134.75374.546.4059.167131.91277.04312.46918.157147.11676.689-4.6457.375131.41650.818-5.649-1.561122.34751.188-7.172
us-gaap:IncomeTaxesPaidNet ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇█▇▇▁▇▇▇▇▇▇▇▇▇0.039-0.8270.0090.0-0.026-3.0020.0471.710.7870.00111.0820.05910.0320.00.0010.1232.064-0.0027.3940.0590.0012.5023.8580.8580.0021.83229.00.0-0.076-131.07815.1253.421-0.4340.4253.194-0.0020.001-0.654.648NANA0.0-1.282-18.2211.603-5.547
us-gaap:InterestExpense ▇▇█▇▇▆▆▆▅▆▇▆▆▅▄▄▄▃▂▂▃▂▁▂▁▁▁▁▃▃▂▃▃▂▃▃▄▆▆▆▇▇▇▆▇▇57.57856.94459.03856.83457.94155.15855.76953.99552.97153.98855.97755.69254.41752.19950.58549.64450.06347.39245.71346.97247.54845.51744.69245.82444.00644.18344.18644.14747.96149.19946.51647.35247.67145.48847.86448.41249.55353.81654.75755.09556.28457.50157.95254.25657.67957.658
us-gaap:InterestPaidNet ▇▆█▅▆▆▆▆▆█▅▇▅▇▄▆▄▆▃▇▂▇▁▇▂▆▂▆▄▅▄▅▄▅▅▇▂█▆▆▆▇▆▆▇▇58.12553.88561.32848.20653.69453.72351.75752.1950.95363.76446.60457.62648.22356.02642.13952.27940.5954.2837.77157.58232.9756.13927.09359.10830.45353.55531.78954.57841.5649.14742.96349.70142.30849.03848.34157.90231.78862.89254.53952.59154.66255.99754.15251.85457.04358.679
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▁▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂██▇▇▇▇▇▇▆▆▆▆▆▃▃▃▂▃3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.7767.4267.4267.1545.4615.1515.1194.7695.117
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▅▂▁█▅▂▃▇▄▂▂▇▅▁▂▇▅▂▂▆▄▁▂▆▄▂▁▆▄▂▂▆▄▂▂▆▄▁▂▆▃▁▂▆215.69735.641-19.391346.372193.58529.99363.981312.276144.14517.91826.076315.012166.7383.22121.629276.072167.44323.31253.246263.027121.3084.45341.117257.116122.90216.1225.41243.961132.45815.76624.26226.163131.20724.44422.631244.823122.345-8.25712.564255.35986.685-15.1357.35233.92NANA
us-gaap:NonoperatingIncomeExpense ██▁▆▇▆▅▅▅▄▅▅▆▆▃▃▃▃▃▃▃▃▂▂▃▃▂▃▃▃▂▂▂▂▂▂▂▂▂▂▂▃▃▃▂▂45.18845.574-6.24130.30535.58729.39324.08921.1222.48119.11326.83726.60327.90627.6947.2528.8267.1186.2828.3255.067.7246.5953.6832.2466.9115.173-1.4565.2119.7725.1254.597-1.7064.53.87-0.3630.4322.6831.4482.9614.7673.2955.3867.175.8910.7974.801
us-gaap:OperatingIncomeLoss ▅▂▁█▅▁▁▇▄▂▂▇▅▁▂█▆▂▃█▄▂▃█▄▂▂▇▅▂▂▇▅▂▂█▅▂▂█▄▁▂▇▄▂278.38647.53430.848455.008261.87440.42211.997403.29196.58960.08466.884433.307242.16231.33490.61466.082304.22973.506122.816451.258231.74850.162109.834445.111231.97367.68460.184421.775254.11375.1783.9415.688259.81286.923101.289447.97254.48948.00778.715435.017196.99237.14165.252400.274201.38457.668
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▅▄▅▄▅▃▅▄▅▅▅▄▅▄▅▄▅▄▅▄▅▇▅▅▅▄▆▅▅▆▆▅▅▅█▆▃▁▇0.9341.284-5.3050.384-2.2961.517-10.5581.098-1.1351.2077.3661.55-4.2831.213-2.8851.509-0.7630.959-1.6761.5730.0510.97819.2421.610.7821.759-5.73911.8150.6853.15111.28215.1223.4746.0775.46730.84317.459-15.614-30.61921.131NANANANANANA
us-gaap:ProfitLoss ▅▂▁█▅▂▃▇▄▂▂▇▅▁▂▇▅▂▂▆▄▁▂▆▄▂▁▆▄▂▂▆▄▂▂▆▄▁▂▆▃▁▂▆▄▁219.43640.514-14.518351.245198.45934.86668.854317.149149.01922.79130.949319.885171.6128.09426.502280.945172.31728.18558.119267.9126.1829.32645.978261.978127.50720.7279.535248.086141.38424.69132.814234.718139.59832.83630.671252.863130.111-0.48119.99262.78593.839-9.67412.501239.039119.566-0.897
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▅▂▂█▄▁▂▇▄▂▂█▅▂▃▇▅▂▂▇▄▂▂▇▄▂▂▇▄▂▂▇▄▂▂▆▄▁▂▆▃▁▂▆▃▁1000.249696.475740.9611254.501929.59661.93670.3911190.787869.501740.53756.3761268.034974.123692.714759.6591183.322944.587677.728739.1991166.922915.394677.167734.431199.146890.648671.219726.451172.667906.264686.251699.7621152.392915.822686.652693.1221109.475878.576620.631667.8921124.841799.799659.575731.8781116.71802.795620.355
us-gaap:Revenues ▅▂▂█▄▁▂▇▄▂▂█▅▂▃▇▅▂▂▇▄▂▂▇▄▂▂▇▄▂▂▇▄▂▂▆▄▁▂▆▃▁▂▆▃▁1000.249696.475740.9611254.501929.59661.93670.3911190.787869.501740.53756.3761268.034974.123692.714759.6591183.322944.587677.728739.1991166.922915.394677.167734.431199.146890.648671.219726.451172.667906.264686.251699.7621152.392915.822686.652693.1221109.475878.576620.631667.8921124.841799.799659.575731.8781116.71802.795620.355
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁21061.57820184.65820020.42119751.42119307.38818561.7618479.24718377.56618165.66617854.10717664.20217671.95517492.17317148.30617019.08216977.86716669.72716192.82516004.25315805.72615538.56515185.10115028.25814875.01814701.48314435.70314313.53213980.34813690.31713450.79713508.68613822.67113562.69413300.92713379.61513460.28613214.40713183.91413111.01813150.36312474.0812302.8912362.703NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▇▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁21061.57820184.65820020.42119751.42119307.38818561.7618479.24718377.56618165.66617854.10717664.20217671.95517492.17317148.30617019.08216977.86716669.72716192.82516004.25315805.72615538.56515185.10115028.25814875.01814701.48314435.70314313.53213980.34813690.31713450.79713508.68613822.67113562.69413300.92713379.61513460.28613214.40713183.91413111.01813150.36312474.0812302.8912362.703NANANA
us-gaap:StockholdersEquity ██▇█▇▇▇▇▆▆▆▆▅▅▅▆▅▅▅▅▄▄▄▄▃▃▃▄▃▃▃▃▂▂▂▂▂▁▂▂▁▁▁5717.6245682.5165633.5035841.3865489.5625469.4185430.6485552.6665233.0785251.0625222.9155353.5725032.0195019.7575006.695142.0684859.4124828.7764803.6224853.3464585.2684599.9994583.9174653.6514392.8364396.7934367.4934491.9164233.894222.7864194.474275.8044032.1654014.4553972.8064056.2423778.0353744.9173821.853894.0853613.7053631.4113683.327NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▇▄▅▇▄▃▃▄▃▂▂▅▄▂▃▄▃▁▁▃▂▁▂▃▃▂▃▃▃▂▃▆▃▂▃▄▂▂▂█▃▂▂1523.1831169.7841198.3191454.6861147.0891078.3071030.031133.1551028.567876.389924.9911207.191118.711957.4041016.2881174.2051068.204794.996822.219977.492963.387826.025890.5161061.9791031.756935.442973.4351040.932999.072897.931043.6091350.4861066.289871.7771005.7261098.852947.416904.8956.471591.2351036.853958.017931.93NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▁▂▃▁▂▁▁▁▁▁▂▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁▁▂▁▃▁▁▁▂▁▁▁█▂▂▂▃▂▁14.14617.20259.968181.9266.76363.13910.28329.8521.6486.1095.76664.9913.83915.4413.89210.6744.9533.0288.88148.26743.0414.48439.48813.00713.55711.6647.60410.4719.161103.4219.526135.45727.80325.10926.20279.47911.22820.7133.583564.71292.274114.193110.188195.91550.5023.528
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁▂▃█▁▃▁▂▁▁▁▃▁▂▁▁▁14.14617.20259.968181.9266.76363.13910.28329.8521.6486.1095.76664.9913.83915.4413.89210.6744.953NA8.881NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsCurrent ▇█▇▆▇█▅▆▆▆▄▅▃▄▃▃▃▄▃▃▃▃▂▂▃▃▂▃▄▃▃▂▃▂▂▁▂▂▁▁▁▂▁81.90186.23876.62767.92675.79682.57361.95867.98572.22265.95156.12860.94645.86551.88748.03945.90545.30148.56545.02843.28442.97940.4837.24238.43944.82745.13538.81740.67348.45745.7839.89536.80542.71739.0537.10228.06233.49632.21926.90429.18330.10331.86828.362NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross ███▇▇▇▇▇▇▆▆▆▅▅▅▅▅▅▅▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁21236.80520948.59120837.88520453.43720343.15119930.98319836.29219677.77319630.40718763.49918736.62818443.98518328.61117896.77217798.06117310.29417227.44417436.7217341.88816877.69516663.96216285.91616222.23215997.44715926.59415551.72615543.06315251.00915448.08715256.94515200.46414597.99514503.8114494.32614346.36714116.01514048.95713928.70913753.97113423.40613351.23913270.77513201.96NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment ███▇▇▇▆▆▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁7278.8777189.7087110.316999.9956905.0496784.4676637.8576552.1776470.9356398.5126366.0146328.7516245.8096231.9186128.5356037.4675951.6536060.2545970.15895.7655733.8575670.8845594.0945537.865497.355452.865397.7515308.6615388.6675360.7815300.2195101.4985022.7294997.1264929.6134901.8334843.8684775.9044709.9914684.764675.2284580.3444514.204NANANA
us-gaap:PropertyPlantAndEquipmentNet ███▇▇▇▇▇▇▆▆▆▆▅▅▄▄▅▅▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁13957.92813758.88313727.57513453.44213438.10213146.51613198.43513125.59613159.47212364.98712370.61412115.23412082.80211664.85411669.52611272.82711275.79111376.46611371.78810981.9310930.10510615.03210628.13810459.58710429.24410098.86610145.3129942.34810059.429896.1649900.2459496.4979481.0819497.29416.7549214.1829205.0899152.8059043.988738.6468676.0118690.4318687.756NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ███▇▇██▇▇▇▇▇▇▇▇▇▇▇▁▁▂▂▂▃▂▂▂▂▃▃▃▃▄▄▄▃▄▄▄▄▄▄▄279.911278.226282.57266.22275.028279.238290.564266.587261.584267.998262.902268.63257.04262.523257.189256.198265.926251.20890.02296.789108.751116.014123.975134.937127.742127.62119.755127.56137.037144.446157.689160.134162.715162.978162.15152.665163.727170.198170.571176.401177.845182.855184.952NANANA
us-gaap:OperatingLeaseRightOfUseAsset █▆▆▆▆▂▂▃▃▃▁718.948502.959505.064502.898555.783144.38145.813156.05176.219193.8970.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▅▅▆▅▆▆▆▆▆▇▇▂▂▅▅▃▃▃▃▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂█112.09188.48792.92296.85592.29597.82296.953102.11697.32299.446103.247106.98859.13758.17784.53188.81871.12170.02569.06368.97754.40152.67952.51852.48651.98751.44954.04760.42761.3860.75360.87560.21964.30464.32562.69462.42864.864.41564.58863.73163.72664.429116.216NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent █▅▆▄▆▅▇▄▆▃▄▃▃▁▃▂▄▃▃▃▆▂▅▂▆▄▅▄▆▂▄▃▄▁▂▂▆▃▆▄▄▁▂377.157309.145318.585288.265316.23301.325346.448276.117327.969263.656277.336249.059260.285205.169256.442236.746270.262250.197264.631248.133316.589234.946297.48233.97326.119271.489295.211278.835320.779224.82284.516250.023287.368212.078221.312231.151316.329265.975326.987281.647271.759215.968236.354NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▁▁▂▁▂▃▄▆▇▇██44.41945.1748.3447.7349.13254.96564.90878.17384.17787.26391.17489.916NANA70.388NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DividendsPayableCurrent 93.61NA93.531NA88.0660.087.9820.082.8240.082.6750.077.8210.077.6670.073.1130.072.9260.069.4840.069.3630.065.9330.065.790.062.656NA62.528NA59.946NA59.789NA57.479NANANA57.272NANANANANA
us-gaap:LiabilitiesCurrent ▇▃▃▃▄█▇▄▆▄▅▅█▆▃▃▅▃▃▂▄▄▄▄▃▃▄▄▄▄▅▄▄▁▂▁▂▂▃▅▆▅▃2023.2681330.5431360.4331244.7841496.3632295.4882078.3651586.7461900.9611591.3041648.9641734.7882238.8851874.3911197.8521303.1431638.5941193.8131292.9461109.7181478.5441585.9021442.3171523.3621339.8591373.9761559.1431448.5181554.7071394.6431618.6441446.9431537.218891.5111083.542949.3481104.3231157.8991342.7051783.2681831.2941674.2121310.736NANANA
us-gaap:OperatingLeaseLiabilityCurrent █▅▅▆▆▂▂▂▄▅▁128.67374.32874.78589.06483.85112.3612.71326.22160.59665.4350.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ▃▃▅▃▂▂▄▄▃▁▄▄▄▅▇▆▄▃▇▆█▄▅▆▄▃▄▅▄▂▃▄▃▂▄▃▃▂▃▃▂▁▃140.038145.589187.448155.289127.175121.514168.323161.716140.879114.361184.229169.454167.202184.623246.529207.599181.133152.015244.0222.257265.498180.319197.861208.076162.742150.432178.962195.938165.123136.128158.54181.639154.196124.456171.573157.281139.561115.618148.616150.764132.801103.363139.063NANANA
us-gaap:TaxesPayableCurrent ▅▆▄▇▃▅▃▇▄▆▃▇▃▅▃▇▃▅▃▇▃▅▃█▃▅▃█▄▅▂▅▂▄▂▅▂▄▂▅▂▃▁183.037213.536159.551221.358151.487194.732144.899220.93158.921199.949154.819226.846156.362194.93148.946228.791150.709182.812138.964219.432145.167181.889138.6250.679155.812188.724140.613249.932161.707179.137130.998183.858129.865164.554124.939190.188133.766160.136120.289191.507131.727155.172104.711NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebtNoncurrent ████▇▅▅▅▅▅▅▄▄▄▅▄▄▄▃▄▃▂▂▂▃▂▂▂▁▂▁▁▁▂▂▂▂▂▁▂▁▁▂6315.9276465.0456314.2666316.425922.1614833.3244832.5584984.9964886.8794886.1084638.2324487.3644191.5254290.5334789.7134491.0484192.524273.894021.7854145.3663897.8353463.0323462.3913257.3473565.8573281.3193031.2153037.8012999.5133045.6142796.4652820.3152820.1723304.4583199.0883338.9513371.4123341.1983019.0543046.5872761.6952845.4793045.794NANANA
us-gaap:DebtAndCapitalLeaseObligations ████▇▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▂▁▁▁▂▁▁▁6465.9276465.0456314.2666316.425922.1615483.3245632.5585434.9965136.8795136.1085138.2325087.3644791.5254872.5334871.7134698.0484399.524398.894146.7854162.2364191.4153820.6123819.9713669.03669.03665.03415.03407.03368.03586.03337.03387.03419.0NA3322.0NANANA3496.0NANANA3678.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▇▇█▆▅▅▅▃▂▂▂▁2192.1692134.4712135.4032163.052070.4532016.771992.3391975.9891838.1451811.6891807.4211813.4721727.7NA1690.805NANANA2945.232NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ▁▁▁▁▂▂▂▂▂▂▃▂▂▂▂▃▃▃▃▂▃▃▃▂▃▃▃▁▃▃▃▆▆▆▇████▅▅▅▅163.207164.23166.484177.855284.585273.284280.185297.843356.928384.492443.17316.423319.604284.007327.3409.871460.368469.746509.31401.68440.919441.605480.998383.801425.002412.552453.736233.292439.49442.136513.628939.4141013.9761034.3271058.7551206.151243.2561277.2271268.91877.485869.277824.502813.121NANANA
us-gaap:MinorityInterest ▄▅▄▅▄▅▄▅▅▅▅▅▅▆▅▆▅▆▅▆▆▆▆▆▅█▇█▇█▇▇▆▆▅▅▄▄▃▃▂▂▁117.275124.164119.29125.789120.915127.414122.54129.039124.165130.663125.79132.289127.415133.914129.04135.539130.665137.164132.29138.789133.915140.414135.54137.668132.807156.214151.609152.097147.972154.915145.99145.624137.07137.875129.483129.342121.302116.512108.736108.91101.90597.3691.899NANANA
us-gaap:OtherLiabilitiesNoncurrent ▄▄▃▃▂▂▂▂▁▂▂▂▂▂▂▂▂▂▂▃▄▃▃▃▄▃▃▃▄▃▃▃▃█▇▆▄▅▄▃▁▂▁211.678206.174190.643173.347159.181163.517159.844166.772144.142149.249147.64161.464168.069155.633148.909158.354168.93162.476156.784190.258198.025194.56186.345184.001196.178191.487188.286177.464196.143184.666185.659178.053191.259307.253283.654248.082209.645219.7217.934170.928142.191144.77132.031NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent █▆▆▆▆▂▂▂▂▂▁547.164360.497361.336358.49409.62151.19851.87252.47253.00553.7040.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo 115.705NA79.17478.10677.82NA11.96314.08312.86812.42412.428NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree 115.589NA78.53677.47677.224NA8.33111.24410.0299.5859.478NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour 116.347NA77.88876.94676.729NA6.3267.7276.9886.6216.513NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive 79.088NA77.97877.03576.823NA4.1416.1015.8385.4965.359NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive 73.55NA74.07473.7273.374NANANANA41.61842.236NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ██▇█▇▇▇▇▆▆▆▆▅▅▅▆▅▅▅▅▄▄▄▄▃▃▃▄▃▃▃▃▂▂▂▂▂▁▂▂▁▁▁5717.6245682.5165633.5035841.3865489.5625469.4185430.6485552.6665233.0785251.0625222.9155353.5725032.0195019.7575006.695142.0684859.4124828.7764803.6224853.3464585.2684599.9994583.9174653.6514392.8364396.7934367.4934491.9164233.894222.7864194.474275.8044032.1654014.4553972.8064056.2423778.0353744.9173821.853894.0853613.7053631.4113683.327NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▇█▇▇▇▇▆▆▆▇▆▆▆▆▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▃▃▂▃▃▂▂▂▂▂▁5834.8995806.685752.7935967.1755610.4775596.8325553.1885681.7055357.2435381.7255348.7055485.8615159.4345153.6715135.735277.6074990.0774965.944935.9124992.1354719.1834740.4134719.4574791.3194525.6434553.0074519.1024644.0134381.8624377.7014340.464421.4284169.2354152.334102.2894185.5843899.3373861.4293930.5864002.9953715.613728.7713775.2263828.2293593.0033330.0
us-gaap:CommonStockValue ███▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▆▄▄▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁2692.0152687.0522677.4822670.3582665.5182664.3872659.5612654.432648.2342644.0632634.2652629.6272624.6722620.2612614.8052608.8252604.4822595.0422596.032552.9792549.4982547.0652541.6682529.0192526.9452523.2472512.972502.2172500.0642497.4852491.5582489.182486.8712484.3472466.9232456.1072453.4532450.2962444.2472441.6212438.2562434.7842421.372NANANA
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us-gaap:RetainedEarningsAccumulatedDeficit ▇▇▇█▇▇▇▇▆▆▆▆▅▅▅▆▅▅▄▅▄▄▄▄▃▃▃▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁3089.2663060.7523025.1063231.4852885.1092867.612837.612949.8912637.622659.0862641.1832780.4282465.4022454.2682442.5112576.1932300.1092278.8672255.5472342.6432079.6192097.2462092.8032190.3871933.2561942.1941926.0652052.2071808.2321801.0471785.2731886.0381659.8681648.5211624.1021721.051476.2591468.8691534.4831579.241323.8921351.7161423.961NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▇▇▇▇▇▇████▇▇▇█████████▇▇▇▇▇▆▆▆▅▅▄▄▄▂▁▂▄▂▂▁-60.578-61.512-62.796-57.491-57.875-55.579-57.096-46.538-47.636-46.501-47.708-55.074-56.624-52.341-45.002-42.117-43.626-42.863-43.822-42.146-43.719-43.77-44.748-63.99-65.6-66.382-68.141-62.402-74.217-74.902-78.053-89.335-104.457-107.931-114.008-119.475-150.318-167.777-152.163-121.544-142.675-149.321-159.767NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity pnw:ArizonaPublicServiceCompany▁▁▁▄▃▄▃▇▇▇▇▄▃▅▇█▇█▇-39.832-39.991-40.918-34.125-35.025-34.197-35.522-26.303-27.276-26.027-27.107-33.756-35.159-30.851-26.983-23.616-25.112-24.375-25.423NANANA-27.097-44.04-45.651-46.476-48.333-42.816-49.4-50.111-53.372-64.436-79.552-83.103-89.095NANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompanyNANA-62.796NANANA-57.096NANANA-47.708NANANA-45.002NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue ▃▃▅▃▃▆▇▄▄▅▄▂▂▃▅▁▂▂▄▁▁▁▅▂▂▂▃▁▁▁▄███▄▂▂▅▄▄▅▅▂3.0793.7766.2892.9663.197.09.4275.1175.145.5864.8251.4091.4312.4315.6240.8331.5532.274.1330.130.130.5425.8061.7651.7652.2663.4010.1060.1890.8444.30810.07910.11710.4824.2111.441.3596.4714.7175.2325.7685.7682.239NANANA
us-gaap:MinorityInterest ▄▅▄▅▄▅▄▅▅▅▅▅▅▆▅▆▅▆▅▆▆▆▆▆▅█▇█▇█▇▇▆▆▅▅▄▄▃▃▂▂▁117.275124.164119.29125.789120.915127.414122.54129.039124.165130.663125.79132.289127.415133.914129.04135.539130.665137.164132.29138.789133.915140.414135.54137.668132.807156.214151.609152.097147.972154.915145.99145.624137.07137.875129.483129.342121.302116.512108.736108.91101.90597.3691.899NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues ▃▅▄▃▂▃▃▄▃▅▃▃▃▃▄▃▅▁▂▃▂▃▆▂▃▅▇▂▂▂█▂▂▂▇▂▂▂4.9639.577.1244.841.1314.8265.1316.1964.1719.7984.6384.9554.4115.4565.984.3439.44-0.9882.6713.4812.4335.39712.6492.0743.69810.27714.3882.1522.282.59217.3672.3312.3632.57415.0862.3652.5252.7NA3.7893.5052.689NA2.506255.48NA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders 10.628NANANA11.372NA11.3710.011.372NA11.3710.011.372NA11.3710.0NANA11.372-0.001NANA6.9890.001NANA4.6130.015.869NA8.1880.0019.196NA7.8990.02.976NANA0.4212.609NANA7.2717.381NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▄▄▆▃▃▃▇▃▃▅█▄▃▅▇▃▃▄▅▅▃▄▆▄▃▄▆▄▄▄▆▄▄▄▇▅▃▄▇▄▄▃▆▄▁110.338202.012194.346402.987185.404183.628121.965488.827172.502173.432317.381563.961228.93166.872346.112481.362150.511140.051258.34342.575278.266144.209272.954427.079250.146144.148212.709421.852215.909249.157270.977428.074242.099212.157241.651470.836343.3115.335205.077484.227192.783243.496180.957368.086215.089-13.675
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▃▃▄▃▃▄▄▄▄▄▅▃▂▂▃▃▃▅▄▃▂▄▄▄▅▄▅▆▅▁▅▆▆▅▅▆▅▅▅▇▆▆▇█▅-301.499-348.069-322.315-302.982-311.361-341.16-298.964-304.375-273.125-254.513-279.508-234.22-318.003-361.093-388.898-351.399-339.556-348.684-241.612-295.009-343.152-372.305-293.445-263.285-276.686-232.817-288.911-240.789-184.46-208.508-437.445-200.078-195.158-176.72-219.876-238.396-179.623-235.099-247.715-205.963-135.534-192.795-198.681-99.35-67.441-210.428
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity pnw:ArizonaPublicServiceCompany▄▃▄▄▄▃▅▄▅▅▅▆▄▃▂▃▄▃▆▅▃▃▅▅▅▆▅▆▇▇▁▇▇▇▆▆▇▆▆▆█▇▇█▇▇-305.654-351.737-325.548-304.894-313.404-342.409-291.546-308.144-276.52-259.883-281.928-238.609-311.93-354.979-382.737-344.108-331.328-342.98-235.876-283.296-336.69-363.479-289.764-262.415-275.147-232.706-288.361-240.789-184.46-208.508-437.445-200.078-195.166-176.72-219.876-238.396-179.623-235.099-248.266-245.434-147.412-192.838-199.514-167.717-173.212-207.089
us-gaap:NetCashProvidedByUsedInFinancingActivities █▇▆▇▇█▇▄▇▇▅▃▇█▆▅██▅▅▇█▆▄▆▇▇▄▅▆▆▅▅▆▅▄▄▇▁█▅▅▅▅▅▇188.105103.2916.01175.15869.581210.388157.43-156.24896.16281.424-97.098-268.58977.472195.76946.004-124.242190.97202.78-56.114-42.33993.442203.09246.972-164.34428.43392.72973.335-179.753-125.70953.24640.537-120.342-44.247-36.53-75.052-164.189-173.159106.891-488.491194.174-79.168-46.696-68.003-123.323-100.67482.253
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▃▁█▃▅▃▅▄▄▂▅▄▄▄▄-3.056-42.766-121.958175.163-56.37652.856-19.56928.204-4.4610.343-59.22561.152-11.6011.5483.2185.721NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity pnw:ArizonaPublicServiceCompany▄▃▁█▃▅▃▅▄▄▃▅▄▄▄▄-2.582-42.774-124.483175.569-47.12743.182-19.37328.187-4.7250.373-59.11861.065-10.2410.153.2185.782NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▃▂▄▄▂▁▅▃▃▃▅▄▃▄▅▅▃▃▆▄▃▄▅▄▃▃▅▃▃▃▇▄▃▃▆▄▃▄▆▄▂▂█▃▄41.308-11.077-21.60868.84840.315-18.086-85.18279.3770.7063.62-0.21683.8633.94-0.22936.915116.88484.00810.35711.955129.03462.4133.46868.748102.69458.3996.97822.246104.16623.8018.81-6.836187.60656.36312.16322.101140.35968.131-1.98944.61119.63752.95-41.005-21.075230.5140.12750.845
us-gaap:DepreciationDepletionAndAmortization ██▇█▇█▇▇▇▇▆▇▆▇▇▆▄▅▄▄▄▄▄▅▄▄▂▂▂▂▁▃▂▂▂▂▂▁▂▂▂▂▂▂▁▁174.127176.409170.511172.569170.005173.168163.339168.616164.384167.801161.094164.311161.984163.566164.922154.422143.424147.861142.16140.56141.532140.759143.543145.903140.724141.494124.765125.351123.977122.394114.351128.489125.138124.344120.692120.827121.256118.487123.677124.407122.402123.298122.045120.798115.842114.122
us-gaap:IncreaseDecreaseInAccountsPayable ▆▆▅▄▆▅▅▄▆▆▅▃▇▄▅▃▅▆▄▁█▃▆▂▇▄▅▃█▃▅▃█▅▄▂▇▃▆▅▇▄▄▅▇▄42.09324.4650.341-24.17222.964-5.19216.742-31.97539.28126.593-3.203-48.01362.352-25.7380.489-46.029-0.37622.147-9.68-104.85886.064-38.44318.981-89.88172.307-35.6736.818-37.89681.715-50.990.71-40.85973.63811.925-26.824-78.97548.554-39.35529.006-8.47762.36-24.543-27.562-8.62668.647-23.334
us-gaap:IncreaseDecreaseInInventories ▇▄▃▄▃▃▇▃▄▅▂▃▄▅▄▃▄▄▃▄▃▃▄▄▄▅▃▃▅▃▄▄▃▅▃▄▄▅▃▄█▁▄▃▃▃26.6484.801-4.783.452-4.85-5.44533.494-2.9558.2313.057-14.488-2.3796.36316.6074.802-3.5564.770.667-2.9475.989-0.026-1.5251.4084.2268.3169.995-7.07-6.0899.2480.1872.9644.912-5.3849.386-0.832.8617.25913.753-2.1347.30639.647-21.4216.735-5.434-7.337-6.24
us-gaap:NetCashProvidedByUsedInOperatingActivities ▃▄▄▆▃▃▃▇▃▃▅█▄▃▅▇▃▃▄▅▅▃▄▆▄▃▄▆▄▄▄▆▄▄▄▇▅▃▄▇▄▄▃▆▄▁110.338202.012194.346402.987185.404183.628121.965488.827172.502173.432317.381563.961228.93166.872346.112481.362150.511140.051258.34342.575278.266144.209272.954427.079250.146144.148212.709421.852215.909249.157270.977428.074242.099212.157241.651470.836343.3115.335205.077484.227192.783243.496180.957368.086215.089-13.675
us-gaap:ProfitLoss ▅▂▁█▅▂▃▇▄▂▂▇▅▁▂▇▅▂▂▆▄▁▂▆▄▂▁▆▄▂▂▆▄▂▂▆▄▁▂▆▃▁▂▆▄▁219.43640.514-14.518351.245198.45934.86668.854317.149149.01922.79130.949319.885171.6128.09426.502280.945172.31728.18558.119267.9126.1829.32645.978261.978127.50720.7279.535248.086141.38424.69132.814234.718139.59832.83630.671252.863130.111-0.48119.99262.78593.839-9.67412.501239.039119.566-0.897
us-gaap:ShareBasedCompensation ▄▇▅▄▄▅▄▄▄▇▄▄▄▆▄▄▄▆▁▄▆█2.14711.3376.1732.9892.8486.2821.892.7611.65112.0743.4072.9512.65210.5373.9493.6622.8949.997-8.7052.548.36116.687NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▄▃▃▄▃▃▄▄▄▄▄▅▃▂▂▃▃▃▅▄▃▂▄▄▄▅▄▅▆▅▁▅▆▆▅▅▆▅▅▅▇▆▆▇█▅-301.499-348.069-322.315-302.982-311.361-341.16-298.964-304.375-273.125-254.513-279.508-234.22-318.003-361.093-388.898-351.399-339.556-348.684-241.612-295.009-343.152-372.305-293.445-263.285-276.686-232.817-288.911-240.789-184.46-208.508-437.445-200.078-195.158-176.72-219.876-238.396-179.623-235.099-247.715-205.963-135.534-192.795-198.681-99.35-67.441-210.428
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity pnw:ArizonaPublicServiceCompany▄▃▄▄▄▃▅▄▅▅▅▆▄▃▂▃▄▃▆▅▃▃▅▅▅▆▅▆▇▇▁▇▇▇▆▆▇▆▆▆█▇▇█▇▇-305.654-351.737-325.548-304.894-313.404-342.409-291.546-308.144-276.52-259.883-281.928-238.609-311.93-354.979-382.737-344.108-331.328-342.98-235.876-283.296-336.69-363.479-289.764-262.415-275.147-232.706-288.361-240.789-184.46-208.508-437.445-200.078-195.166-176.72-219.876-238.396-179.623-235.099-248.266-245.434-147.412-192.838-199.514-167.717-173.212-207.089
us-gaap:PaymentsToAcquireProductiveAssets ▅▆▆▄▅▅▅▅▄▃▄▂▅▆▇▅▆▆▃▄▆▆▄▃▄▃▄▂▁▂█▂▂▁▂▃▁▃▃▃▂▁▂▁▁▂317.373363.775355.532294.079336.959340.014333.564316.482281.609259.792279.714218.506318.912361.037381.021334.127344.802348.824260.562283.301353.109378.5297.387247.665279.994251.041291.976229.906181.293207.459434.807204.914193.742182.859218.867245.909183.802240.973241.089255.989195.719191.553195.667174.128176.025202.554
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities █▇▆▇▇█▇▄▇▇▅▃▇█▆▅██▅▅▇█▆▄▆▇▇▄▅▆▆▅▅▆▅▄▄▇▁█▅▅▅▅▅▇188.105103.2916.01175.15869.581210.388157.43-156.24896.16281.424-97.098-268.58977.472195.76946.004-124.242190.97202.78-56.114-42.33993.442203.09246.972-164.34428.43392.72973.335-179.753-125.70953.24640.537-120.342-44.247-36.53-75.052-164.189-173.159106.891-488.491194.174-79.168-46.696-68.003-123.323-100.67482.253
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▁▂▂▄█▁▃▃▁▄▂▃▁▁▃▃▁▃▁▃▄▁▃▁▃▃▂▁▃▃▁▁▁▂▂▁▁▃▁▃▁▂0.0150.0112.85394.9361088.8860.0297.207297.6570.0497.324150.0295.2450.00.0298.761297.843-3.806255.4410.0247.218445.9330.0242.4150.0350.0250.0157.038.151285.975250.00.00.032.0104.307125.00.032.0319.0810.0295.3530.0175.0NANANA0.0
 us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity pnw:ArizonaPublicServiceCompanyNANA112.85394.936591.9360.0297.207297.6570.0497.3240.0295.2450.00.00.0297.843-3.806255.4410.0247.218445.9330.0242.4150.0350.0250.032.038.151285.975250.00.00.032.0104.3070.00.032.0319.0810.0NANANANANANANA
us-gaap:RepaymentsOfLongTermDebt NANA115.150.0650.0150.0100.00.00.0500.0100.00.082.00.0125.00.0NANA16.87276.71NANA70.7230.0NANA148.9950.0NANA50.05132.65NANA232.5830.25245.724375.727426.71240.49512.792175.1722.04369.30811.0714.15
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity pnw:ArizonaPublicServiceCompanyNANA115.150.0200.0150.0100.00.00.0500.0100.00.082.00.00.00.0NANA16.87276.71NANA70.7230.0NANA23.9950.0NANA50.05132.65NANA107.5830.25245.724375.727416.7120.49512.7920.1718.1560.2428.9390.357
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity,us-gaap:DebtInstrument pnw:ArizonaPublicServiceCompany,pnw:CityOfFarmingtonNewMexicoPollutionControlRevenueRefundingBondNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity,us-gaap:DebtInstrument pnw:ArizonaPublicServiceCompany,pnw:CityOfFarmingtonNewMexicoPollutionControlRevenueRefundingBond1994SeriesBNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ███▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▄▃▃▃▂▃▃▃▃▂▂▂▂▂▂▂▂▁▂▂▂▂▂▁91.77991.72191.65386.35886.30986.25786.52781.13781.08280.89780.85576.09576.03975.90375.86671.40771.34371.17771.11467.7867.72467.61167.56164.22564.1864.06158.89362.6462.61862.5260.75958.25458.16458.06758.00155.77755.70255.59555.53153.6657.23755.355.25755.255.10151.421
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value26922687267726702665266426592654264826442634262926242620261426082604259525962552254925472541252925262523251225022500249724912489248624842466245624532450244424412438243424212153
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.813.313.413.513.814.414.414.414.614.814.914.915.015.315.415.415.616.016.216.216.416.816.917.017.217.517.617.918.318.618.418.018.318.718.418.218.618.618.618.619.519.819.618.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value2671265026292609
Percentage of CommonStockValue99.899.699.899.8
Percentage of Assets13.314.314.915.3
Percentage of Assets srt:ParentCompany40.542.243.646.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value113113112112112112112112112112112112112112112112111111111111111111110111110110110110109109109108109107101
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value112112112112112112112112112112112111111111111111111111110110110110110110109109109109109109109108108107101
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.910.32-0.173.071.720.270.572.781.280.160.232.811.490.030.192.471.50.210.482.361.090.040.372.321.110.150.052.21.20.140.222.061.190.220.212.231.12-0.080.122.340.8-0.140.042.151.07-0.06
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.910.32-0.183.071.710.270.572.771.280.160.232.81.480.030.192.461.490.210.472.351.080.040.372.31.10.140.052.21.190.140.222.041.180.220.22.211.11-0.080.112.320.79-0.140.052.141.07-0.06
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value21636-24.696346191315331314319333161624.4341827716624512641215.4316025812317-0.32925513318352411343028275139-23.871-18.05527693-4.689
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.75.30.027.620.64.88.026.316.42.64.425.016.70.62.523.517.63.67.022.713.30.88.221.613.92.7-0.021.814.72.85.120.914.74.44.124.815.9-3.8-2.724.611.7-0.7

us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value21936-21.59135119636583191482951339173102428516824572701278.31260262126211025713522412501373231278142-19.86-13.13526794-1.723
Percentage of ComprehensiveIncomeNetOfTax101.598.187.4101.3102.6116.4109.9102.1104.1153.5152.9107.3106.8242.9130.3102.9101.099.7111.3102.3104.9153.0100.7101.6102.0121.5-3105.8100.7101.9120.4115.6103.6102.1105.0111.2101.0101.683.272.796.7101.236.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.05.20.028.021.15.58.826.917.14.06.826.817.81.63.224.117.83.67.823.213.91.28.321.914.23.21.422.015.03.35.921.715.04.74.525.116.2-3.2-2.023.811.8-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value22041-19.823351196365831814723383211679.3072328217129562691261065263128223.79625914227442491433836283147-16.095-38.0962831000.7725.838234128
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.06.00.028.021.15.58.726.717.03.25.125.317.21.33.123.918.24.37.623.113.81.58.922.014.43.40.522.215.74.16.321.715.65.75.225.616.8-2.6-5.725.212.60.10.021.016.0

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value22341-16.71835620141633241533455344178152929017329622751321365267130261426114431492581454039286149-12.093-5.72741013.74728227104
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest101.598.384.3101.3102.5114.2109.1102.0104.0142.6146.2107.2106.6168.1124.0102.9101.099.8110.4102.3104.7128.0100.7101.5102.0117.1377.8100.7101.7113.9112.6103.5102.0103.9108.7101.0101.575.115.096.8101.1485.4486.696.980.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.45.90.028.421.66.39.527.317.74.67.427.218.32.33.924.618.34.38.423.614.41.98.922.314.73.92.022.316.04.67.122.415.95.95.725.817.1-1.9-0.924.412.70.60.020.413.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cost Of Goods And Service Excluding Depreciation Depletion And Amortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value269198213353238188224344242230
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.028.50.028.225.628.533.529.027.931.1

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value269198213353238188224344242230
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.028.50.028.225.628.533.529.027.931.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.0

Cost Of Goods And Services Sold Depreciation And Amortization

us-gaap:CostOfGoodsAndServicesSoldDepreciationAndAmortization

us-gaap:CostOfGoodsAndServicesSoldDepreciationAndAmortization


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value158157155152152154145149147148146145145144146133125
Percentage of CostOfGoodsAndServicesSoldDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.922.70.012.216.423.321.712.616.920.119.311.514.920.919.311.313.3

us-gaap:CostOfGoodsAndServicesSoldDepreciationAndAmortization dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value158157155152152154145149147148146145144144146133125
Percentage of CostOfGoodsAndServicesSoldDepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.499.599.799.799.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.922.70.012.216.423.321.712.516.920.119.311.514.820.819.311.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value721648710799667621658787672680689834731661669717640604616715683627624754658603666750652611615736656599591661624572589689602622666716601562
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax72.293.20.063.771.893.998.266.177.491.991.265.875.195.588.160.667.889.283.461.374.792.685.062.974.089.991.764.072.089.088.063.971.687.385.459.671.092.388.261.375.494.40.064.274.990.7

us-gaap:CostsAndExpenses dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value718645706795664618655784669675669814720654677856729611641858744627646897727609670884725615619867731610609811700566595831653602593839653546
Percentage of CostsAndExpenses99.699.499.499.699.599.599.599.699.599.297.197.698.498.9101.2119.4114.0101.2104.0120.0108.8100.1103.6119.0110.4101.0100.7117.8111.2100.8100.6117.7111.5101.9102.9122.7112.398.9101.1120.5108.496.889.0117.1108.697.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax71.992.60.063.471.593.497.765.977.091.288.564.274.094.489.272.377.390.286.773.681.392.788.174.881.690.892.375.480.089.788.675.379.989.087.973.279.891.289.273.981.791.30.075.281.488.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value42823914370166254042156.8294252613240919111401194281438221531413662164553399207-4.36126384144-16.3735.271351144
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.225.82.231.119.13.431.922.11.035.927.74.835.121.01.733.521.94.32.032.623.84.56.031.823.76.67.736.123.6-0.74.034.218.0-2.50.031.518.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Income
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value43724520379173344282281643526236
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest102.0102.6141.7102.6104.5137.3106.1105.9242.8102.4100.5113.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.826.43.131.920.04.733.823.52.436.827.85.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value46-4.35-19.9137741-20.209-88.53753172.4186.7958444-1.26520144884.21127141651.91422139677.9475.007134746.4059.16713177121814776-4.6457.37513150-5.649-1.56112251-7.172
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.7-0.60.06.24.4-3.1-13.24.52.00.30.96.74.5-0.22.712.29.40.63.712.17.20.33.111.67.61.20.711.58.20.91.311.48.41.82.613.38.7-0.71.111.76.4-0.90.011.06.4-1.2

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value482.319-17.3268143-19.448-85.64256181.4531185452.10625146888.648
Percentage of IncomeTaxExpenseBenefit104.6-53.387.0106.0106.496.296.7105.4108.160.1167.8101.4103.9-166.5122.6101.599.5205.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.90.30.06.54.7-2.9-12.84.72.10.21.56.74.70.33.412.49.41.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.039-0.8270.0090.0-0.026-3.0020.0471.7100.001110.059100.00.0010.1232.064-0.0027.3940.0590.0012.5023.8580.8580.0021.832290.0-0.076-131.078153.421-0.4340.4253.194-0.0020.001-0.654.6480.0-1.282-18.2211.603-5.547
Percentage of IncomeTaxesPaidNet100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.10.00.0-0.0-0.50.00.11.20.01.50.01.00.00.00.00.2-0.01.00.00.00.40.50.10.00.34.00.0-0.0-19.12.20.3-0.00.10.5-0.00.0-0.10.70.00.0-1.60.2-0.9

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value57565956575555535253555554525049504745464745444544444444474946474745474849535455565757545757
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.88.20.04.56.28.38.34.56.17.37.44.45.67.56.74.25.37.06.24.05.26.76.13.84.96.66.13.85.37.26.64.15.26.66.94.45.68.78.24.97.08.70.04.97.29.3

us-gaap:InterestExpense dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value54545654525152504950525251494947484644464744444543434343474745464644464748525253545454505453
Percentage of InterestExpense95.195.596.195.889.893.793.693.292.792.694.294.594.594.697.696.297.197.798.098.598.998.998.698.698.498.598.498.398.896.698.398.398.398.296.897.997.697.996.896.997.095.094.293.893.993.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.57.80.04.35.67.87.84.25.66.87.04.25.37.16.54.05.16.86.14.05.16.66.03.84.96.56.03.75.26.96.54.05.16.56.74.35.58.57.94.76.88.30.04.66.78.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value58536148535351525063465748564252405437573256275930533154414942494249485731625452545554515758
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.87.70.03.85.88.17.74.45.98.66.24.55.08.15.54.44.38.05.14.93.68.33.74.93.48.04.44.74.67.26.14.34.67.17.05.23.610.18.24.76.88.50.04.67.19.5

us-gaap:InterestPaidNet dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value53535747485246504561415643544150395336563255265829523153404742484148465630615251525350505254
Percentage of InterestPaidNet92.798.693.999.091.296.990.296.689.996.389.397.790.497.998.396.596.697.997.598.898.599.097.699.197.998.697.798.898.696.698.198.598.298.296.698.296.898.197.197.996.895.893.998.291.792.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.47.60.03.85.37.97.04.25.38.35.54.44.57.95.54.34.27.85.04.93.58.23.64.93.37.94.34.64.56.96.04.24.57.06.75.13.59.97.94.66.68.10.04.66.58.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.7767.4267.4267.1545.4615.1515.1194.7695.117
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.00.40.50.70.70.40.60.70.60.40.50.70.60.40.50.70.70.40.50.70.70.40.50.70.60.41.01.31.20.70.91.21.20.70.91.31.10.70.90.80.00.50.60.8

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.767-47.6137.4357.1845.47-35.1975.1284.7785.128
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9-641.2100.1100.4100.2-683.3100.2100.2100.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.00.40.50.70.70.40.60.70.60.40.50.70.60.40.50.70.70.40.50.70.70.40.50.70.60.41.01.31.20.70.91.21.20.70.91.3-7.10.70.90.80.00.50.60.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest dei:LegalEntity, us-gaap:ConsolidatedEntities

pnw:ArizonaPublicServiceCompany, us-gaap:VariableInterestEntityPrimaryBeneficiary


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value4.05.05.05.05.05.05.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest107.0102.6102.6102.6102.6102.6102.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.40.50.80.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value21535-19.391346193296331214417263151663.2212127616723532631214.45341257122165.4124313215242261312422244122-8.2571225586-15.1357.35233
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.65.10.027.620.84.59.526.216.62.43.424.817.10.52.823.317.73.47.222.513.30.75.621.413.82.40.720.814.62.33.519.614.33.63.322.113.9-1.31.922.710.8-2.30.020.9

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value21935-14.798350197356731815028443381779.5992728416923582691277.25343261125191525113419302341332626247124-4.1051424687-12.0817.8112269010
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic101.999.076.3101.2101.8117.8106.2102.1104.2157.8170.6107.4106.6298.0128.5103.0101.099.4109.8102.4104.8162.9106.7101.6102.0123.2290.9102.9101.9123.8123.8103.9102.1106.5118.6101.2102.149.7113.896.5101.279.8106.396.90.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.05.10.027.921.25.310.126.817.33.85.926.718.31.43.724.017.93.47.923.113.91.16.021.814.13.02.221.414.92.84.320.414.63.83.922.314.2-0.72.121.911.0-1.80.020.311.21.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4545-6.24130352924212219262627277.2528.8267.1186.2828.3255.067.7246.5953.6832.2466.9115.173-1.4565.2119.7725.1254.597-1.7064.53.87-0.3630.4322.6831.4482.9614.7673.2955.3867.175.8910.7974.801
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.56.50.02.43.84.43.61.82.62.63.52.12.94.01.00.70.80.91.10.40.81.00.50.20.80.8-0.20.41.10.70.7-0.10.50.6-0.10.00.30.20.40.40.40.80.00.50.10.8

us-gaap:NonoperatingIncomeExpense dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4545-5.3833322824232219262728282.752149.8038.8911212138.1916.07810106.668.52710106.3585.2875.7985.4694.2433.4396.3414.232.3484.09144.0712.4417.1715.6842.8944.389
Percentage of NonoperatingIncomeExpense100.7100.286.2108.991.798.4100.8112.5100.5100.699.6104.7101.5101.537.9168.1137.7141.5149.0251.7173.6124.2165.0445.6153.2128.7-585.6204.6110.6124.1115.0-339.9121.5109.6-947.41467.8157.7162.2138.1301.5123.645.3100.096.5363.191.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.66.60.02.63.54.43.62.02.62.63.52.22.94.10.41.31.01.31.71.11.51.20.80.81.21.01.20.91.20.90.80.50.60.60.50.60.50.40.61.30.50.40.00.50.40.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2784730455261401140319660664332423190466304731224512315010944523167604212547583415259861014472544878435196376540020157
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.86.80.036.328.26.11.833.922.68.18.834.224.94.511.939.432.210.816.638.725.37.415.037.126.010.18.336.028.011.012.036.128.412.714.640.429.07.711.838.724.65.60.035.825.19.3

us-gaap:OperatingIncomeLoss dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2815134458265431540620065864532513779322212659530716548863011626154287180697928418374772961765370292145456027714665
Percentage of OperatingIncomeLoss101.1107.8113.0100.8101.2107.6126.1100.8101.7108.8129.7104.7103.9120.987.569.169.989.178.068.271.597.578.967.770.190.691.168.371.092.694.268.470.786.176.866.369.5112.589.767.373.8122.792.569.272.6113.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.17.40.036.628.56.62.334.123.08.811.535.825.85.510.427.222.59.713.026.418.17.211.825.118.39.17.524.619.910.111.324.720.110.911.226.820.18.710.626.018.26.90.024.818.210.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


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
Value0.9341.284-5.3050.384-2.2961.517-10.5581.098-1.1351.2077.3661.55-4.2831.213-2.8851.509-0.7630.959-1.6761.5730.0510.978191.610.7821.759-5.739110.6853.15111153.4746.0775.4673017-15.614-30.61921
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.00.0-0.20.2-1.60.1-0.10.21.00.1-0.40.2-0.40.1-0.10.1-0.20.10.00.12.60.10.10.3-0.81.00.10.51.61.30.40.90.82.82.0-2.5-4.61.9

us-gaap:OtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

pnw:ArizonaPublicServiceCompany


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
Value0.1590.927-6.7930.9-0.8281.325-9.2190.973-1.2491.086.6491.403-4.3081.17-3.3671.496-0.7371.048-1.0631.5680.111.059161.6110.8251.857-5.5176.5840.7113.26111153.5515.9924.4063017-15.755-27.42221
Percentage of OtherComprehensiveIncomeLossNetOfTax17.072.2128.0234.436.187.387.388.6110.089.590.390.5100.696.5116.799.196.6109.363.499.7215.7108.388.1100.1105.5105.696.155.7103.8103.598.1100.0102.298.680.699.698.0100.989.699.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.1-0.10.2-1.40.1-0.10.10.90.1-0.40.2-0.40.1-0.10.2-0.10.10.00.22.30.10.10.3-0.80.60.10.51.61.30.40.90.62.81.9-2.5-4.11.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

pnw:ArizonaPublicServiceCompany, us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.1590.927-6.7930.9-0.8281.325-9.2190.973-1.2491.086.6491.403-4.3081.17-3.3671.496-0.7371.048-1.0631.5680.111.059161.6110.8251.857-5.5176.5840.7113.261
Percentage of OtherComprehensiveIncomeLossNetOfTax17.072.2128.0234.436.187.387.388.6110.089.590.390.5100.696.5116.799.196.6109.363.499.7215.7108.388.1100.1105.5105.696.155.7103.8103.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.00.1-0.10.2-1.40.1-0.10.10.90.1-0.40.2-0.40.1-0.10.2-0.10.10.00.22.30.10.10.3-0.80.60.10.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.9341.284-5.3050.384-2.2961.517-10.5581.098-1.1351.2077.3661.55-4.2831.213-2.8851.509-0.7630.959-1.6761.5730.0510.978191.610.7821.759-5.739110.6853.151
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.00.0-0.20.2-1.60.1-0.10.21.00.1-0.40.2-0.40.1-0.10.1-0.20.10.00.12.60.10.10.3-0.81.00.10.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value21940-14.518351198346831714922303191718.0942628017228582671269.32645261127209.53524814124322341393230252130-0.4811926293-9.67412239119-0.897
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.95.80.028.021.35.310.326.617.13.14.125.217.61.23.523.718.24.27.923.013.81.46.321.814.33.11.321.215.63.64.720.415.24.84.422.814.8-0.13.023.411.7-1.50.021.414.9-0.1

us-gaap:ProfitLoss dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22340-9.925355201407232315533493431821432289173286327413212482661292419255143283824314234342551323.6622125394-6.611122319416
Percentage of ProfitLoss101.899.168.4101.1101.8115.4105.8102.1104.0145.4159.5107.3106.5178.8123.2102.9101.099.5109.0102.3104.7130.0106.0101.6101.9118.1208.3102.9101.7115.2117.6103.7102.0104.9113.7101.2102.0-761.3108.796.6101.168.3103.597.079.5-1796.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.35.80.028.321.76.110.927.217.84.56.527.118.82.14.324.418.44.18.623.514.41.86.622.214.63.62.721.815.94.15.521.115.55.05.023.115.10.63.322.611.9-1.00.020.811.82.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

pnw:ArizonaPublicServiceCompany, us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.7677.4357.1845.475.1284.778
Percentage of ProfitLoss1.712.0-33.61.42.514.07.11.53.321.415.71.52.860.218.41.72.817.38.41.83.952.310.61.93.622.243.31.76.336.126.13.66.025.626.23.26.0-1614.82.87.7-56.52.14.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.00.40.50.70.70.40.60.70.60.40.50.70.60.40.50.70.70.40.50.70.70.40.50.70.60.41.01.31.20.70.91.21.20.70.91.30.70.90.80.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value21935-14.798350197356731815028443381779.5992728416923582691277.25343261125191525113419
Percentage of ProfitLoss100.187.1101.999.799.3101.498.7100.5100.8124.1143.7105.8103.6118.6104.8101.298.182.2100.6100.5100.877.895.499.798.395.9165.0101.295.479.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.05.10.027.921.25.310.126.817.33.85.926.718.31.43.724.017.93.47.923.113.91.16.021.814.13.02.221.414.92.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.7767.4267.1545.4615.1194.769
Percentage of ProfitLoss1.712.0-33.61.42.514.07.11.53.321.415.71.52.860.218.41.72.817.38.41.83.952.310.61.93.622.243.31.76.336.126.13.66.025.626.23.26.0-1616.62.87.6-56.52.14.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.00.40.50.70.70.40.60.70.60.40.50.70.60.40.50.70.70.40.50.70.70.40.50.70.60.41.01.31.20.70.91.21.20.70.91.30.70.90.80.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value21535-19.391346193296331214417263151663.2212127616723532631214.45341257122165.4124313215
Percentage of ProfitLoss98.388.0133.698.697.586.092.998.596.778.684.398.597.239.881.698.397.282.791.698.296.147.789.498.196.477.856.798.393.763.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.65.10.027.620.84.59.526.216.62.43.424.817.10.52.823.317.73.47.222.513.30.75.621.413.82.40.720.814.62.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value100069674012549296616701190869740756126897469275911839446777391166915677734119989067172611729066866991152915686693110987862066711247996597311116802620
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

pnw:RetailNonResidential, pnw:ElectricService


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
Value420314340461381303315465395332353496435343
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.145.245.936.841.045.847.039.145.544.946.739.244.749.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.145.245.936.841.045.847.039.145.544.946.739.244.749.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:RetailNonResidential pnw:ElectricService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:RetailResidential, pnw:ElectricService


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
Value531340362726515325308668432351354695500316
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.248.949.057.955.449.146.056.149.747.546.954.851.445.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax53.248.949.057.955.449.146.056.149.747.546.954.851.445.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:RetailResidential pnw:ElectricService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:Wholesale, pnw:ElectricService


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
Value1817174515142636213628531512
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.52.33.61.72.24.03.12.54.93.74.21.61.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.82.52.33.61.72.24.03.12.54.93.74.21.61.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:Wholesale pnw:ElectricService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

pnw:ElectricandTransmissionService


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
Value980682727124491564865911788587217471257954683
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.097.998.199.298.497.998.398.998.797.498.899.197.998.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.097.998.199.298.497.998.398.998.797.498.899.197.998.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ElectricandTransmissionService100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:OtherServices


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
Value6.9514.2643.4723.4712.6482.9113.7554.1023.8564.5955.7736.3427.4955.916
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.60.50.30.30.40.60.30.40.60.80.50.80.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.70.60.50.30.30.40.60.30.40.60.80.50.80.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:OtherServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:TransmissionServices


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
Value2218171814151615151514151514
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.72.31.41.62.42.41.31.72.11.91.31.62.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.32.72.31.41.62.42.41.31.72.11.91.31.62.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:TransmissionServices100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value100069674012549296616701190869740756126897469275911839446777391166915677734119989067172611729066866991152915686693110987862066711247996597311116802620
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Revenuesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value10006967401254929661670119086974075612679716927571178943677
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.899.999.899.699.9100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.899.999.899.699.9100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2106120184200201975119307185611847918377181651785417664176711749217148170191697716669161921600415805155381518515028148751470114435143131398013690134501350813822135621330013379134601321413183131111315012474123021236211986
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Assetsdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value20974200981992419666192021845418370182921807417756175651754917337170081689316851165461608715931156781548015134149821483814640143411421513936135801335913381136751348413230132421335013146130981303213074123741219612271
Percentage of Assets99.699.699.599.699.599.499.499.599.599.599.499.399.199.299.399.399.399.499.599.299.699.799.799.899.699.399.399.799.299.399.198.999.499.599.099.299.599.499.499.499.299.199.3
Percentage of Assets99.699.699.599.699.599.499.499.599.599.599.499.399.199.299.399.399.399.499.599.299.699.799.799.899.699.399.399.799.299.399.198.999.499.599.099.299.599.499.499.499.299.199.3
Percentage of Assets pnw:ArizonaPublicServiceCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value6599627960345677
Percentage of Assets33.034.034.233.4
Percentage of Assets33.034.034.233.4
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2106120184200201975119307185611847918377181651785417664176711749217148170191697716669161921600415805155381518515028148751470114435143131398013690134501350813822135621330013379134601321413183131111315012474123021236211986
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value20974200981992419666192021845418370182921807417756175651754917337170081689316851165461608715931156781548015134149821483814640143411421513936135801335913381136751348413230132421335013146130981303213074123741219612271
Percentage of LiabilitiesAndStockholdersEquity99.699.699.599.699.599.499.499.599.599.599.499.399.199.299.399.399.399.499.599.299.699.799.799.899.699.399.399.799.299.399.198.999.499.599.099.299.599.499.499.499.299.199.3
Percentage of Assets99.699.699.599.699.599.499.499.599.599.599.499.399.199.299.399.399.399.499.599.299.699.799.799.899.699.399.399.799.299.399.198.999.499.599.099.299.599.499.499.499.299.199.3
Percentage of Assets pnw:ArizonaPublicServiceCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value6599627960345677
Percentage of LiabilitiesAndStockholdersEquity33.034.034.233.4
Percentage of Assets33.034.034.233.4
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value57175682563358415489546954305552523352515222535350325019500651424859482848034853458545994583465343924396436744914233422241944275403240143972405637783744382138943613363136833316
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.128.228.129.628.429.529.430.228.829.429.630.328.829.329.430.329.229.830.030.729.530.330.531.329.930.530.532.130.931.431.130.929.730.229.730.128.628.429.129.629.029.529.827.7

us-gaap:StockholdersEquity dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value6295626262256284593359125876599356735690566156255285526752565237495249294905494646754687467947574494449944784599434243314308439241424125409341813902386539434013374637663824
Percentage of StockholdersEquity110.1110.2110.5107.6108.1108.1108.2107.9108.4108.4108.4105.1105.0104.9105.0101.9101.9102.1102.1101.9102.0101.9102.1102.2102.3102.3102.5102.4102.6102.6102.7102.7102.7102.8103.0103.1103.3103.2103.2103.1103.7103.7103.8
Percentage of Assets29.931.031.131.830.731.931.832.631.231.932.031.830.230.730.930.929.730.430.731.330.130.931.132.030.631.231.332.931.732.231.931.830.531.030.631.129.529.330.130.530.030.630.9
Percentage of Assets pnw:ArizonaPublicServiceCompany30.031.231.232.030.932.032.032.831.432.032.232.130.531.031.131.129.930.630.831.630.231.031.232.130.731.431.533.032.032.432.232.130.731.230.931.329.729.530.330.730.330.931.2

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value5633543052225006
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets28.129.429.629.4
Percentage of Assets srt:ParentCompany85.486.586.688.2

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value152311691198145411471078103011331028876924120711189571016117410687948229779638268901061103193597310409998971043135010668711005109894790495615911036958931928
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.25.86.07.45.95.85.66.25.74.95.26.86.45.66.06.96.44.95.16.26.25.45.97.17.06.56.87.47.36.77.79.87.96.67.58.27.26.97.312.18.37.87.57.7

us-gaap:AssetsCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value14901137115814251097103198111019958438931166109393499511581048789837930947809870105099486390010289178339441231102183490010239168579151554976891953
Percentage of AssetsCurrent97.997.296.798.095.795.695.397.296.896.396.696.697.797.698.098.798.199.3101.895.298.498.097.898.996.492.392.598.891.992.890.591.295.895.789.693.296.794.795.797.794.293.0102.3
Percentage of Assets7.15.65.87.25.75.65.36.05.54.75.16.66.35.55.86.86.34.95.25.96.15.35.87.16.86.06.37.46.76.27.08.97.56.36.77.66.96.57.011.87.87.27.7
Percentage of Assets pnw:ArizonaPublicServiceCompany7.15.75.87.25.75.65.36.05.54.85.16.66.35.55.96.96.34.95.35.96.15.45.87.16.86.06.37.46.86.27.19.07.66.36.87.77.06.57.011.97.97.37.8

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value139120134112
Percentage of AssetsCurrent11.611.714.511.1
Percentage of Assets0.70.70.80.7
Percentage of Assets srt:ParentCompany2.11.92.22.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1417591816.7636310291.6486.1095.766643.8391513104.9533.0288.881484314391313117.604109.1611039.5261352725267911203356492114110195503.52814510556
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.30.90.00.30.10.20.00.00.00.40.00.10.10.10.00.00.10.30.30.10.30.10.10.10.10.10.10.80.11.00.20.20.20.60.10.20.34.30.70.90.90.00.00.01.20.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value1114571816.2245310291.3556.085.707643.761413104.8512.9338.848.027314.904225.3467.9736.0834.5155.1559.0821033.7251135.9567.3283.499532.7842.081195558510499162351.64412071
Percentage of CashAndCashEquivalentsAtCarryingValue84.584.595.699.992.084.598.999.082.299.599.099.797.990.799.799.697.996.999.516.672.533.955.941.158.852.259.449.299.1100.039.183.521.429.213.467.724.810.059.298.393.091.490.782.870.546.683.168.0
Percentage of Assets0.10.10.30.90.00.30.10.20.00.00.00.40.00.10.10.10.00.00.10.10.20.00.10.00.10.00.00.00.10.80.00.80.00.10.00.40.00.00.24.20.70.80.80.00.00.01.00.0
Percentage of Assets pnw:ArizonaPublicServiceCompany0.10.10.30.90.00.30.10.20.00.00.00.40.00.10.10.10.00.00.10.10.20.00.10.00.10.00.00.00.10.80.00.80.00.10.00.40.00.00.24.20.70.90.80.00.00.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value0.0190.0190.0410.0410.04117
Percentage of CashAndCashEquivalentsAtCarryingValue0.00.20.70.30.544.1
Percentage of Assets0.00.00.00.00.00.1
Percentage of Assets srt:ParentCompany0.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value1417591816.7636310291.6486.1095.766643.8391513104.9538.881
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.30.90.00.30.10.20.00.00.00.40.00.10.10.10.00.1

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value1114571816.2245310291.3556.085.707643.761413104.8518.84
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents84.584.595.699.992.084.598.999.082.299.599.099.797.990.799.799.697.999.5
Percentage of Assets0.10.10.30.90.00.30.10.20.00.00.00.40.00.10.10.10.00.1
Percentage of Assets pnw:ArizonaPublicServiceCompany0.10.10.30.90.00.30.10.20.00.00.00.40.00.10.10.10.00.1

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.0190.0190.0410.0410.041
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents0.00.20.70.30.5
Percentage of Assets0.00.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.00.0

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8186766775826167726556604551484545484543424037384445384048453936423937283332262930312830
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.30.40.40.30.40.40.40.30.30.30.30.30.30.30.30.30.30.30.30.20.30.30.30.30.30.40.30.30.30.30.30.30.20.30.20.20.20.20.30.20.3

us-gaap:OtherAssetsCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value51564742475738454944354142454139384341393939353744443840474539354239372833322928292725
Percentage of OtherAssetsCurrent62.966.162.163.162.869.662.866.968.867.362.667.692.687.685.586.785.588.692.992.492.196.596.097.998.598.699.798.598.698.798.197.899.1100.8101.5100.099.999.8109.198.199.187.188.6
Percentage of Assets0.20.30.20.20.20.30.20.20.30.20.20.20.20.30.20.20.20.30.30.30.30.30.20.30.30.30.30.30.30.30.30.30.30.30.30.20.30.20.20.20.20.20.2
Percentage of Assets pnw:ArizonaPublicServiceCompany0.20.30.20.20.20.30.20.20.30.30.20.20.20.30.20.20.20.30.30.30.30.30.20.30.30.30.30.30.40.30.30.30.30.30.30.20.30.20.20.20.20.20.2

us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.2980.4011.5020.267
Percentage of OtherAssetsCurrent0.40.62.70.6
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2123620948208372045320343199301983619677196301876318736184431832817896177981731017227174361734116877166631628516222159971592615551155431525115448152561520014597145031449414346141161404813928137531342313351132701320112848
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.8103.8104.1103.6105.4107.4107.3107.1108.1105.1106.1104.4104.8104.4104.6102.0103.3107.7108.4106.8107.2107.2107.9107.5108.3107.7108.6109.1112.8113.4112.5105.6106.9109.0107.2104.9106.3105.6104.9102.1107.0107.9106.8107.2

us-gaap:PropertyPlantAndEquipmentGross dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value21233209452083420449203391992719832196741962618760187331844018325177511765417195171121732417228167641666016282162181599315923155481553915247154441525315196145941449914490143421411214045139241375013419133471326613197
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.299.299.399.399.499.399.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.8103.8104.1103.5105.3107.4107.3107.1108.0105.1106.1104.3104.8103.5103.7101.3102.7107.0107.7106.1107.2107.2107.9107.5108.3107.7108.6109.1112.8113.4112.5105.6106.9108.9107.2104.8106.3105.6104.9102.0107.0107.8106.8
Percentage of Assets pnw:ArizonaPublicServiceCompany101.2104.2104.6104.0105.9108.0108.0107.6108.6105.6106.6105.1105.7104.4104.5102.0103.4107.7108.1106.9107.6107.6108.3107.8108.8108.4109.3109.4113.7114.2113.6106.7107.5109.5108.3105.7106.8106.3105.5102.6107.9108.8107.5

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value72787189711069996905678466376552647063986366632862456231612860375951606059705895573356705594553754975452539753085388536053005101502249974929490148434775470946844675458045144340
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.635.635.535.435.836.635.935.735.635.836.035.835.736.336.035.635.737.437.337.336.937.337.237.237.437.837.738.039.439.939.236.937.037.636.836.436.736.235.935.637.537.236.536.2

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value7275718671076996690167816634654864676395636263256242614460415951586559745881580857305667559055345494544953945305538553575296509750194993492548984840477247064681467145764510
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.099.999.999.999.999.998.698.698.698.698.698.598.599.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.9
Percentage of Assets34.535.635.535.435.736.535.935.635.635.836.035.835.735.835.535.135.236.936.836.736.937.337.237.237.437.837.738.039.339.839.236.937.037.536.836.436.636.235.935.637.537.236.5
Percentage of Assets pnw:ArizonaPublicServiceCompany34.735.835.735.635.936.736.135.835.836.036.236.036.036.135.835.335.437.136.937.037.037.437.337.337.538.038.038.139.740.139.637.337.237.737.236.736.836.436.135.837.837.536.8

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value139571375813727134531343813146131981312513159123641237012115120821166411669112721127511376113711098110930106151062810459104291009810145994210059989699009496948194979416921492059152904387388676869086878507
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.368.268.668.169.670.871.471.472.469.370.068.669.168.068.666.467.670.371.169.570.369.970.770.370.970.070.971.173.573.673.368.769.971.470.468.569.769.469.066.569.670.670.371.0

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value13957137581372713453134371314613198131251315912364123701211412082116071161211244112461134911346109561092910614106271045910429100981014599421005998959900949694809496941692139204915290438738867586898686
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.599.599.799.799.899.899.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets66.368.268.668.169.670.871.471.472.469.370.068.669.167.768.266.267.570.170.969.370.369.970.770.370.970.070.971.173.573.673.368.769.971.470.468.569.769.469.066.469.570.670.3
Percentage of Assets pnw:ArizonaPublicServiceCompany66.568.568.968.470.071.271.871.872.869.670.469.069.768.268.766.768.070.571.269.970.670.170.970.571.270.471.471.374.174.174.069.470.371.871.169.070.069.969.466.870.171.270.8

us-gaap:PropertyPlantAndEquipmentNet us-gaap:PublicUtility

us-gaap:ElectricityGenerationPlantNonNuclear


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value13727131981237011669113711062810145
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets68.671.470.068.671.170.770.9
Percentage of Assets us-gaap:ElectricityGenerationPlantNonNuclear0.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2792782822662752792902662612672622682572622572562652519096108116123134127127119127137144157160162162162152163170170176177182184164
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.31.41.41.31.41.51.61.51.41.51.51.51.51.51.51.51.61.60.60.60.70.80.80.90.90.90.80.91.01.11.21.21.21.21.21.11.21.31.31.31.41.51.51.4

us-gaap:IntangibleAssetsNetExcludingGoodwill dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value2792782822662742792902662612672622682562622572562652518996108115123134127127119127136144157159162162161152163170170176177182184
Percentage of IntangibleAssetsNetExcludingGoodwill99.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.899.899.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.999.9
Percentage of Assets1.31.41.41.31.41.51.61.41.41.51.51.51.51.51.51.51.61.60.60.60.70.80.80.90.90.90.80.91.01.11.21.21.21.21.21.11.21.31.31.31.41.51.5
Percentage of Assets pnw:ArizonaPublicServiceCompany1.31.41.41.41.41.51.61.51.41.51.51.51.51.51.51.51.61.60.60.60.70.80.80.90.90.90.80.91.01.11.21.21.21.21.21.11.21.31.31.31.41.51.5

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:PublicUtility

us-gaap:ElectricityGenerationPlantNonNuclear


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value28229026225790123119
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.61.51.50.60.80.8
Percentage of Assets us-gaap:ElectricityGenerationPlantNonNuclear0.00.00.00.00.00.00.0

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
Value7185025055025551441451561761930.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets3.42.52.52.52.90.80.80.81.01.10.0

us-gaap:OperatingLeaseRightOfUseAsset dei:LegalEntity

pnw:ArizonaPublicServiceCompany


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
Value7175015035015541421441541741910.0
Percentage of OperatingLeaseRightOfUseAsset99.899.799.799.799.798.898.898.898.999.00.0
Percentage of Assets3.42.52.52.52.90.80.80.81.01.10.0
Percentage of Assets pnw:ArizonaPublicServiceCompany3.42.52.52.52.90.80.80.81.01.10.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1128892969297961029799103106595884887170696854525252515154606160606064646262646464636364116110
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.50.50.50.50.50.60.50.60.60.60.30.30.50.50.40.40.40.40.40.30.30.40.40.40.40.40.40.50.50.40.50.50.50.50.50.50.50.50.50.50.90.9

us-gaap:OtherAssetsNoncurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value68444648434443554642404040416766494948483434343433333333343433333132313131313029292971
Percentage of OtherAssetsNoncurrent60.950.749.550.047.645.745.254.747.442.339.538.169.170.579.474.870.070.170.070.364.066.365.665.265.465.861.755.256.056.655.455.149.649.950.549.848.048.347.346.446.445.261.5
Percentage of Assets0.30.20.20.20.20.20.20.30.30.20.20.20.20.20.40.40.30.30.30.30.20.20.20.20.20.20.20.20.30.30.20.20.20.20.20.20.20.20.20.20.20.20.6
Percentage of Assets pnw:ArizonaPublicServiceCompany0.30.20.20.20.20.20.20.30.30.20.20.20.20.20.40.40.30.30.30.30.20.20.20.20.20.20.20.20.30.30.30.20.20.20.20.20.20.20.20.20.20.20.6

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value52503444
Percentage of OtherAssetsNoncurrent56.651.733.852.8
Percentage of Assets0.30.30.20.3
Percentage of Assets srt:ParentCompany0.80.80.60.8

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value377309318288316301346276327263277249260205256236270250264248316234297233326271295278320224284250287212221231316265326281271215236240
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.51.61.51.61.61.91.51.81.51.61.41.51.21.51.41.61.51.71.62.01.52.01.62.21.92.12.02.31.72.11.82.11.61.71.72.42.02.52.12.21.81.92.0

us-gaap:AccountsPayableCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value369301311282307294338268319257266241253198247227265245259241311232291229321265289272315219281243282207215223311260322274266204218
Percentage of AccountsPayableCurrent98.197.697.898.197.497.697.697.197.497.596.097.097.396.596.796.198.298.297.997.398.499.098.097.998.797.998.297.898.397.898.897.498.397.897.496.698.598.098.597.597.994.792.4
Percentage of Assets1.81.51.61.41.61.61.81.51.81.41.51.41.41.21.51.31.61.51.61.52.01.51.91.52.21.82.02.02.31.62.11.82.11.61.61.72.42.02.52.12.11.71.8
Percentage of Assets pnw:ArizonaPublicServiceCompany1.81.51.61.41.61.61.81.51.81.41.51.41.51.21.51.41.61.51.61.52.01.51.91.52.21.92.02.02.31.62.11.82.11.61.61.72.42.02.52.12.11.71.8

us-gaap:AccountsPayableCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.6697.6349.5657.638
Percentage of AccountsPayableCurrent1.82.23.43.0
Percentage of Assets0.00.00.10.0
Percentage of Assets srt:ParentCompany0.10.10.20.1

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value44454847495464788487918970
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.30.30.40.40.50.50.50.50.4

us-gaap:ContractWithCustomerLiabilityCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value44454847495464788487918970
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.30.30.40.40.50.50.50.50.4
Percentage of Assets pnw:ArizonaPublicServiceCompany0.20.20.20.20.30.30.40.40.50.50.50.50.4

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-06-302020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-06-302012-12-312012-06-302011-06-30
Value9393880.0870.0820.0820.0770.0770.0730.0720.0690.0690.0650.0650.0626259595757
Percentage of DividendsPayableCurrent100.0100.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.50.50.00.50.00.50.00.50.00.40.00.50.00.40.00.50.00.40.00.50.00.40.00.50.00.50.50.40.40.40.5

us-gaap:DividendsPayableCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Dividends
Period End2021-06-302020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-06-302012-12-312012-06-302011-06-30
Value9393880.0880.0820.0820.0770.0770.0730.0720.0690.0690.0650.0650.0626259595757
Percentage of DividendsPayableCurrent99.9100.099.90.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.10.099.90.0100.00.099.9100.099.9100.0100.0100.0
Percentage of Assets0.40.50.50.00.50.00.50.00.50.00.40.00.50.00.40.00.50.00.40.00.50.00.40.00.50.00.50.50.40.40.40.5
Percentage of Assets pnw:ArizonaPublicServiceCompany0.40.50.50.00.50.00.50.00.50.00.40.00.50.00.40.00.50.00.40.00.50.00.50.00.50.00.50.50.40.50.40.5

us-gaap:DividendsPayableCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Dividends
Period End2020-12-312019-12-312018-12-312017-12-31
Value93878277
Percentage of DividendsPayableCurrent100.0100.0100.0100.0
Percentage of Assets0.50.50.50.5
Percentage of Assets srt:ParentCompany1.41.41.41.4

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value202313301360124414962295207815861900159116481734223818741197130316381193129211091478158514421523133913731559144815541394161814461537891108394911041157134217831831167413101108
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.66.66.86.37.812.411.28.610.58.99.39.812.810.97.07.79.87.48.17.09.510.49.610.29.19.510.910.411.410.412.010.511.36.78.17.18.48.810.213.614.713.610.69.3

us-gaap:LiabilitiesCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value1868130911761225141517101492151418501526157616282137176110981068140796510941065146415761424159313491349153214711527137815801405150285910439021087112613221758181416531234
Percentage of LiabilitiesCurrent92.498.486.598.494.674.571.895.497.395.995.693.995.594.091.782.085.980.984.696.099.099.498.8104.6100.798.298.3101.698.398.997.797.197.796.496.395.098.597.398.598.699.198.894.2
Percentage of Assets8.96.55.96.27.39.28.18.210.28.58.99.212.210.36.56.38.46.06.86.79.410.49.510.79.29.310.710.511.210.311.710.211.16.57.86.78.28.510.113.414.513.410.0
Percentage of Assets pnw:ArizonaPublicServiceCompany8.96.55.96.27.49.38.18.310.28.69.09.312.310.46.56.38.56.06.96.89.510.49.510.79.29.410.810.611.210.311.810.311.16.57.96.88.38.610.113.414.713.610.1

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value300684196207
Percentage of LiabilitiesCurrent22.132.911.917.3
Percentage of Assets1.53.71.11.2
Percentage of Assets srt:ParentCompany4.610.93.33.6

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
Value1287474898312122660650.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.60.40.40.50.40.10.10.10.30.40.0

us-gaap:OperatingLeaseLiabilityCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


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
Value1287474888312122660650.0
Percentage of OperatingLeaseLiabilityCurrent99.999.999.999.999.998.998.799.399.799.70.0
Percentage of Assets0.60.40.40.50.40.10.10.10.30.40.0
Percentage of Assets pnw:ArizonaPublicServiceCompany0.60.40.40.50.40.10.10.10.30.40.0

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Operating
Period End2020-12-312019-12-312018-12-31
Value0.090.0810.0
Percentage of OperatingLeaseLiabilityCurrent0.10.60.0
Percentage of Assets0.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value140145187155127121168161140114184169167184246207181152244222265180197208162150178195165136158181154124171157139115148150132103139125
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.70.90.80.70.70.90.90.80.61.01.01.01.11.41.21.10.91.51.41.71.21.31.41.11.01.31.41.21.01.21.31.10.91.31.21.10.91.11.11.10.81.11.0

us-gaap:OtherLiabilitiesCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value1421521901531281331641591381141781651621802432021801492261862391721801871321301671741481181301521251021451311279314013211896132
Percentage of OtherLiabilitiesCurrent102.1104.6101.699.2100.8109.997.998.998.3100.396.797.597.597.598.997.699.498.392.883.990.495.591.290.081.686.593.589.390.087.482.583.981.482.284.783.991.380.994.388.089.193.495.0
Percentage of Assets0.70.81.00.80.70.70.90.90.80.61.00.90.91.01.41.21.10.91.41.21.51.11.21.30.90.91.21.31.10.91.01.10.90.81.11.01.00.71.11.00.90.81.1
Percentage of Assets pnw:ArizonaPublicServiceCompany0.70.81.00.80.70.70.90.90.80.61.00.90.91.11.41.21.10.91.41.21.51.11.21.30.90.91.21.31.10.91.01.10.90.81.11.01.00.71.11.01.00.81.1

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value15151917
Percentage of OtherLiabilitiesCurrent8.29.010.47.1
Percentage of Assets0.10.10.10.1
Percentage of Assets srt:ParentCompany0.20.20.30.3

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value183213159221151194144220158199154226156194148228150182138219145181138250155188140249161179130183129164124190133160120191131155104104
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.10.81.10.81.00.81.20.91.10.91.30.91.10.91.30.91.10.91.40.91.20.91.71.11.31.01.81.21.31.01.31.01.20.91.41.01.20.91.51.11.30.80.9

us-gaap:TaxesPayableCurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value193211148268150190136215175230176263183211157233147178130252161183144346199190131300160173122178129159116176134156113192142170106
Percentage of TaxesPayableCurrent105.798.993.4121.599.697.994.197.5110.7115.3113.9116.2117.5108.5105.6101.997.897.694.0115.0111.3100.8104.2138.3128.0100.893.2120.399.596.693.597.099.397.193.492.9100.397.794.7100.4108.0110.1101.6
Percentage of Assets0.91.00.71.40.81.00.71.21.01.31.01.51.11.20.91.40.91.10.81.61.01.21.02.31.41.30.92.21.21.30.91.31.01.20.91.31.01.20.91.51.11.40.9
Percentage of Assets pnw:ArizonaPublicServiceCompany0.91.10.71.40.81.00.71.21.01.31.01.51.11.20.91.40.91.10.81.61.01.21.02.31.41.30.92.21.21.30.91.31.01.20.91.31.01.20.91.51.11.40.9

us-gaap:TaxesPayableCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Taxes
Period End2020-12-312019-12-312018-12-312017-12-31
Value168.5739.0068.927
Percentage of TaxesPayableCurrent10.75.95.86.0
Percentage of Assets0.10.00.10.1
Percentage of Assets srt:ParentCompany0.30.10.10.2

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value63156465631463165922483348324984488648864638448741914290478944914192427340214145389734633462325735653281303130372999304527962820282033043199333833713341301930462761284530453496
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.032.031.532.030.726.026.227.126.927.426.325.424.025.028.126.525.226.425.126.225.122.823.021.924.322.721.221.721.922.620.720.420.824.823.924.825.525.323.023.222.123.124.629.2

us-gaap:LongTermDebtNoncurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312011-12-312010-12-31
Value5819581858175820542548334833453544374437418941883893449128943045
Percentage of LongTermDebtNoncurrent92.190.092.192.191.6100.0100.091.090.890.890.393.392.993.895.9100.0
Percentage of Assets27.628.829.129.528.126.026.224.724.424.923.723.722.326.422.124.6
Percentage of Assets pnw:ArizonaPublicServiceCompany27.728.929.229.628.326.226.324.824.625.023.923.922.526.622.224.8

us-gaap:LongTermDebtNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value496-0.575448298
Percentage of LongTermDebtNoncurrent7.9-0.09.76.2
Percentage of Assets2.5-0.02.51.8
Percentage of Assets srt:ParentCompany7.5-0.07.45.3

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-12-312010-12-31
Value646564656314631659225483563254345136513651385087479148724871469843994398414641624191382038193669366936653415340733683586333733873419332234963678
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.732.031.532.030.729.530.529.628.328.829.128.827.428.428.627.726.427.225.926.327.025.225.424.725.025.423.924.424.626.724.724.525.224.826.729.8

us-gaap:DebtAndCapitalLeaseObligations dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value5819581858175820542550335183498546874687468947884493457445734573427442734021403740663695369435443544354032893282324334613211326232943302319633713502
Percentage of DebtAndCapitalLeaseObligations90.090.092.192.191.691.892.091.791.391.391.394.193.893.993.997.397.297.297.097.097.096.796.796.696.696.696.396.396.396.596.396.396.30.096.296.495.2
Percentage of Assets27.628.829.129.528.127.128.027.125.826.326.527.125.726.726.926.925.626.425.125.526.224.324.623.824.124.523.023.523.725.723.823.624.324.823.925.728.3
Percentage of Assets pnw:ArizonaPublicServiceCompany27.728.929.229.628.327.328.227.325.926.426.727.325.926.927.127.125.826.625.225.826.324.424.723.924.224.723.123.623.925.924.023.924.425.024.125.928.5

us-gaap:DebtAndCapitalLeaseObligations us-gaap:ConsolidatedEntities

srt:ParentCompany


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value646646496496496449449449449448448298298298
Percentage of DebtAndCapitalLeaseObligations10.010.07.97.98.48.28.08.38.78.78.75.96.26.1
Percentage of Assets3.13.22.52.52.62.42.42.42.52.52.51.71.71.8
Percentage of Assets srt:ParentCompany0.00.07.50.00.00.07.20.00.00.07.40.00.05.3

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value219221342135216320702016199219751838181118071813172716902945
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets10.410.610.711.010.710.910.810.810.110.110.210.39.99.918.4

us-gaap:DeferredIncomeTaxLiabilitiesNet dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value219221502143216621062057203319761831181518121834175517422999
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.8100.4100.2101.7102.0102.0100.099.6100.2100.3101.2101.6103.1101.8
Percentage of Assets10.410.710.711.010.911.111.010.810.110.210.310.410.010.218.7
Percentage of Assets pnw:ArizonaPublicServiceCompany10.510.710.811.011.011.211.110.810.110.210.310.510.110.318.8

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1631641661772842732802973563844433163192843274094604695094014404414803834254124532334394425139391013103410581206124312771268877869824813811
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.80.91.51.51.51.62.02.22.51.81.81.71.92.42.82.93.22.52.82.93.22.62.92.93.21.73.23.33.86.87.57.87.99.09.49.79.76.77.06.76.66.8

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value14614714816126725526228134036742529629926330638944044948838041942045935639738442420340340547690197499410171162119812311222836827782770
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent89.989.789.590.694.093.693.694.595.395.596.093.993.893.093.795.195.695.695.994.895.295.195.492.993.493.193.687.491.991.792.795.996.196.196.196.496.496.496.395.395.294.994.8
Percentage of Assets0.70.70.70.81.41.41.41.51.92.12.41.71.71.51.82.32.62.83.12.42.72.83.12.42.72.73.01.52.93.03.56.57.27.57.68.69.19.39.36.46.66.46.2
Percentage of Assets pnw:ArizonaPublicServiceCompany0.70.70.70.81.41.41.41.51.92.12.41.71.71.61.82.32.72.83.12.42.72.83.12.42.72.73.01.53.03.03.66.67.27.57.78.79.19.49.46.46.76.46.3

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Pension
Period End2020-12-312019-12-312018-12-312017-12-31
Value17171720
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent10.56.44.06.3
Percentage of Assets0.10.10.10.1
Percentage of Assets srt:ParentCompany0.30.30.30.4

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value166280443327509
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets0.81.52.51.93.2
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1171241191251201271221291241301251321271331291351301371321381331401351371321561511521471541451451371371291291211161081081019791111
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.70.70.70.70.70.70.70.70.80.80.80.80.80.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.70.9

us-gaap:MinorityInterest dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value1171241191251201271221291241301251321271331291351301371321381331401351371321561511521471541451451371371291291211161081081019691
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.799.799.799.299.299.1
Percentage of Assets0.60.60.60.60.60.70.70.70.70.70.70.70.70.80.80.80.80.80.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.7
Percentage of Assets pnw:ArizonaPublicServiceCompany0.60.60.60.60.60.70.70.70.70.70.70.80.70.80.80.80.80.90.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.7

us-gaap:MinorityInterest dei:LegalEntity, us-gaap:ConsolidatedEntities

pnw:ArizonaPublicServiceCompany, us-gaap:VariableInterestEntityPrimaryBeneficiary


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value117124119125120127122
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.70.7
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Minority
Period End2020-12-312019-12-312018-12-312017-12-31
Value119122125129
Percentage of MinorityInterest100.0100.0100.0100.0
Percentage of Assets0.60.70.70.8
Percentage of Assets srt:ParentCompany1.82.02.12.3

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value211206190173159163159166144149147161168155148158168162156190198194186184196191188177196184185178191307283248209219217170142144132144
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.01.01.00.90.80.90.90.90.80.80.80.91.00.90.90.91.01.01.01.21.31.31.21.21.31.31.31.31.41.41.41.31.42.32.11.81.61.71.71.31.11.21.11.2

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value18217616014213814113614312112512513914714013314315414814314014814514214215915314413615515314814516127725020917218918214111411796
Percentage of OtherLiabilitiesNoncurrent86.285.583.982.287.286.885.485.984.084.385.086.687.590.289.890.691.391.291.673.775.274.876.677.381.380.076.977.179.483.080.081.884.790.588.484.582.586.083.882.880.781.473.2
Percentage of Assets0.90.90.80.70.70.80.70.80.70.70.70.80.80.80.80.80.90.90.90.91.01.00.91.01.11.11.01.01.11.11.11.11.22.11.91.61.31.41.41.10.91.00.8
Percentage of Assets pnw:ArizonaPublicServiceCompany0.90.90.80.70.70.80.70.80.70.70.70.80.80.80.80.90.90.90.90.91.01.01.01.01.11.11.01.01.11.11.11.11.22.11.91.61.31.41.41.10.91.00.8

us-gaap:OtherLiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value30232215
Percentage of OtherLiabilitiesNoncurrent16.114.615.010.2
Percentage of Assets0.20.10.10.1
Percentage of Assets srt:ParentCompany0.50.40.40.3

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
Value54736036135840951515253530.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.61.81.81.82.10.30.30.30.30.30.0

us-gaap:OperatingLeaseLiabilityNoncurrent dei:LegalEntity

pnw:ArizonaPublicServiceCompany


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
Value54535835935640749505051510.0
Percentage of OperatingLeaseLiabilityNoncurrent99.799.599.599.599.696.696.696.696.596.50.0
Percentage of Assets2.61.81.81.82.10.30.30.30.30.30.0
Percentage of Assets pnw:ArizonaPublicServiceCompany2.61.81.81.82.10.30.30.30.30.30.0

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Operating
Period End2020-12-312019-12-312018-12-31
Value1.6831.780.0
Percentage of OperatingLeaseLiabilityNoncurrent0.53.40.0
Percentage of Assets0.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value1157978771114121212
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.40.40.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value9.544109.7819.4951114121212
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo8.213.712.512.2100.0100.0100.0100.0100.0
Percentage of Assets0.00.10.00.00.10.10.10.10.1
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value1066868680.00.00.00.00.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo91.886.387.587.80.00.00.00.00.0
Percentage of Assets0.50.30.30.40.00.00.00.00.0
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value1157877778.33111109.5859.478
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.40.40.40.00.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value6.9558.5037.4437.1918.33111109.5859.478
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree6.010.89.69.3100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.10.10.10.1
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value1087070700.00.00.00.00.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree94.089.290.490.70.00.00.00.00.0
Percentage of Assets0.50.30.40.40.00.00.00.00.0
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value1167776766.3267.7276.9886.6216.513
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.40.40.40.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.1816.1045.1624.9456.3267.7276.9886.6216.513
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour4.57.86.76.4100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value1117171710.00.00.00.00.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour95.592.293.393.60.00.00.00.00.0
Percentage of Assets0.50.40.40.40.00.00.00.00.0
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value797777764.1416.1015.8385.4965.359
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.9894.43.4573.2454.1416.1015.8385.4965.359
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive5.05.64.54.2100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value757373730.00.00.00.00.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive95.094.495.595.80.00.00.00.00.0
Percentage of Assets0.40.40.40.40.00.00.00.00.0
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-03-312018-12-31
Value737473734142
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.40.20.2

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-03-312018-12-31
Value343736364142
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive46.850.450.149.9100.0100.0
Percentage of Assets0.20.20.20.20.20.2
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-03-312018-12-31
Value393636360.00.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive53.249.649.950.10.00.0
Percentage of Assets0.20.20.20.20.00.0
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312019-01-01
Value6754364474936478113119119
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.22.22.32.60.30.40.60.70.0

us-gaap:OperatingLeaseLiability us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Operating
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value6263616364656465
Percentage of OperatingLeaseLiability9.214.513.712.9100.082.757.154.9
Percentage of Assets0.30.30.30.30.30.40.40.4
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Operating
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value6133723864290.0134853
Percentage of OperatingLeaseLiability90.885.586.387.10.017.342.945.1
Percentage of Assets2.91.92.02.20.00.10.30.3
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value7194684815298498134140144
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.42.32.42.70.50.50.70.80.8

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value798179828485858689
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue11.117.416.515.6100.086.263.561.362.2
Percentage of Assets0.40.40.40.40.50.50.50.50.5
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value6393874024460.013495454
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue88.982.683.584.40.013.836.538.737.8
Percentage of Assets3.01.92.02.30.00.10.30.30.3
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value4332333519202021
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount us-gaap:PropertyPlantAndEquipmentByType

pnw:LandPropertyandEquipmentLeases


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value1718181819202020
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount40.656.054.252.8100.099.998.696.2
Percentage of Assets0.10.10.10.10.10.10.10.1
Percentage of Assets pnw:LandPropertyandEquipmentLeases0.00.00.00.00.00.00.00.0

pnw:PurchasedPowerLeaseContracts


Lessee
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value251415160.00.0190.2940.814
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount59.444.045.847.20.00.11.43.8
Percentage of Assets0.10.10.10.10.00.00.00.0
Percentage of Assets pnw:PurchasedPowerLeaseContracts0.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value57175682563358415489546954305552523352515222535350325019500651424859482848034853458545994583465343924396436744914233422241944275403240143972405637783744382138943613363136833316
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.128.228.129.628.429.529.430.228.829.429.630.328.829.329.430.329.229.830.030.729.530.330.531.329.930.530.532.130.931.431.130.929.730.229.730.128.628.429.129.629.029.529.827.7

us-gaap:StockholdersEquity dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value6295626262256284593359125876599356735690566156255285526752565237495249294905494646754687467947574494449944784599434243314308439241424125409341813902386539434013374637663824
Percentage of StockholdersEquity110.1110.2110.5107.6108.1108.1108.2107.9108.4108.4108.4105.1105.0104.9105.0101.9101.9102.1102.1101.9102.0101.9102.1102.2102.3102.3102.5102.4102.6102.6102.7102.7102.7102.8103.0103.1103.3103.2103.2103.1103.7103.7103.8
Percentage of Assets29.931.031.131.830.731.931.832.631.231.932.031.830.230.730.930.929.730.430.731.330.130.931.132.030.631.231.332.931.732.231.931.830.531.030.631.129.529.330.130.530.030.630.9
Percentage of Assets pnw:ArizonaPublicServiceCompany30.031.231.232.030.932.032.032.831.432.032.232.130.531.031.131.129.930.630.831.630.231.031.232.130.731.431.533.032.032.432.232.130.731.230.931.329.729.530.330.730.330.931.2

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value5633543052225006
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets28.129.429.629.4
Percentage of Assets srt:ParentCompany85.486.586.688.2

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value583458065752596756105596555356815357538153485485515951535135527749904965493549924719474047194791452545534519464443814377434044214169415241024185389938613930400237153728377538283593333034283570
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.728.828.730.229.130.230.130.929.530.130.331.029.530.130.231.129.930.730.831.630.431.231.432.230.831.531.633.232.032.532.132.030.731.230.731.129.529.330.030.429.830.330.50.00.00.028.60.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value64126386634564106054604059986122579758215786575754125401538553735082506750375085480948274814489446274656462947514490448644544538427942624222431040243981405141223847386239163921369434543527
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest109.9110.0110.3107.4107.9107.9108.0107.8108.2108.2108.2105.0104.9104.8104.9101.8101.9102.0102.1101.9101.9101.8102.0102.2102.2102.3102.5102.3102.5102.5102.6102.6102.7102.7102.9103.0103.2103.1103.1103.0103.5103.6103.7102.4102.8103.7102.9
Percentage of Assets30.431.631.732.531.432.532.533.331.932.632.832.630.931.531.631.630.531.331.532.231.031.832.032.931.532.332.334.032.833.433.032.831.632.031.632.030.530.230.931.330.831.431.70.00.00.029.4
Percentage of Assets pnw:ArizonaPublicServiceCompany30.631.831.832.631.532.732.733.532.132.832.932.831.231.831.931.930.731.531.632.431.131.932.133.031.632.532.634.133.133.633.333.231.732.231.932.330.630.431.131.531.131.731.90.00.00.00.0

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

pnw:ArizonaPublicServiceCompany, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-39.832-39.991-40.918-34.125-35.025-33.935-34.948-25.542-26.297-24.644-25.396-31.816-32.768-28.004-24.421-20.59-21.368-20.06-20.671
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.7-0.7-0.7-0.6-0.6-0.6-0.6-0.4-0.5-0.5-0.5-0.6-0.6-0.5-0.5-0.4-0.4-0.4-0.4
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.1
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-39.832-39.991-40.918-34.125-35.025-34.197-35.522-26.303-27.276-26.027-27.107-33.756-35.159-30.851-26.983-23.616-25.112-24.375-25.423-24.36-25.928-26.038-27.097-44.04-45.651-46.476-48.333-42.816-49.4-50.111-53.372-89.095-125.591-136.295-109.796-125.702
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.7-0.7-0.7-0.6-0.6-0.6-0.6-0.5-0.5-0.5-0.5-0.6-0.7-0.6-0.5-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.6-0.9-1.0-1.0-1.1-0.9-1.1-1.1-1.2-2.2-3.2-3.6-3.2-3.5
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.7-1.0-1.1-0.90.0
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value287128712871272127212721272127212721272127212571257125712571242124212421242123792379237923792379237923792379237923792379237923792379237921262117
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest49.249.549.945.648.548.649.047.950.850.650.946.949.849.950.145.948.548.849.147.750.450.250.449.752.652.352.751.254.354.454.858.060.563.062.059.3
Percentage of Assets13.614.214.313.814.114.714.714.815.015.215.414.614.715.015.114.314.515.015.115.115.315.715.816.016.216.516.617.017.417.717.617.818.219.217.70.0
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value11712411912512012712212912413012513212713312913513013713213813314013513713215615115214715414514513713712912912111610810810196919488878277
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.02.12.12.12.22.32.22.32.32.42.42.42.52.62.52.62.62.82.72.82.83.02.92.92.93.43.43.33.43.53.43.33.33.33.23.13.13.02.82.72.72.62.42.52.52.62.42.2
Percentage of Assets0.60.60.60.60.60.70.70.70.70.70.70.70.70.80.80.80.80.80.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.70.00.00.00.70.0
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value328432523216341830683047301131192801281627882909257025482533266123772354233124132143215521482243198219881968208418331823180416241510140312501168
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest56.356.055.957.354.754.454.254.952.352.352.153.049.849.549.350.447.647.447.248.345.445.545.546.843.843.743.644.941.841.741.639.638.437.236.532.7
Percentage of Assets15.616.116.117.315.916.416.317.015.415.815.816.514.714.914.915.714.314.514.615.313.814.214.315.113.513.813.814.913.413.613.412.111.511.410.40.0
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value5752555353485135
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0
Percentage of Assets28.730.130.330.2
Percentage of Assets srt:ParentCompany87.288.488.690.5

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-59.639-59.703-60.725-55.283-56.326-55.317-56.522-45.777-46.657-45.118-45.997-53.134-54.233-49.494-42.44-39.091-39.882-38.548-39.07
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.0-1.0-1.1-0.9-1.0-1.0-1.0-0.8-0.9-0.8-0.9-1.0-1.1-1.0-0.8-0.7-0.8-0.8-0.8
Percentage of Assets-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.3-0.3-0.3-0.3-0.2-0.2-0.2-0.2-0.2
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-0.939-1.809-2.071-2.208-1.549-0.262-0.574-0.761-0.979-1.383-1.711-1.94-2.391-2.847-2.562-3.026-3.744-4.315-4.752
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.1-0.1-0.1-0.1
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-60.578-61.512-62.796-57.491-57.875-55.579-57.096-46.538-47.636-46.501-47.708-55.074-56.624-52.341-45.002-42.117-43.626-42.863-43.822-42.146-43.719-43.77-44.748-63.99-65.6-66.382-68.141-62.402-74.217-74.902-78.053-114.008-152.163-159.767-131.587-146.698-15.863
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.0-1.1-1.1-1.0-1.0-1.0-1.0-0.8-0.9-0.9-0.9-1.0-1.1-1.0-0.9-0.8-0.9-0.9-0.9-0.8-0.9-0.9-0.9-1.3-1.4-1.5-1.5-1.3-1.7-1.7-1.8-2.8-3.9-4.2-3.8-4.10.0
Percentage of Assets-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.5-0.5-0.4-0.5-0.6-0.6-0.9-1.2-1.3-1.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value2692268726772670266526642659265426482644263426292624262026142608260425952596255225492547254125292526252325122502250024972491246624442421215321512135
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest46.146.346.544.847.547.647.946.749.449.149.347.950.950.850.949.452.252.352.651.154.053.753.952.855.855.455.653.957.157.157.460.162.264.162.860.20.0
Percentage of Assets12.813.313.413.513.814.414.414.414.614.814.914.915.015.315.415.415.616.016.216.216.416.816.917.017.217.517.617.918.318.618.418.418.619.618.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1171241191251201271221291241301251321271331291351301371321381331401351371321561511521471541451451371371291291211161081081019791111113116111124128
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.02.12.12.12.22.32.22.32.32.42.42.42.52.62.52.62.62.82.72.82.83.02.92.92.93.43.43.33.43.53.43.33.33.33.23.13.13.02.82.72.72.62.42.93.23.53.33.50.0
Percentage of Assets0.60.60.60.60.60.70.70.70.70.70.70.70.70.80.80.80.80.80.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.70.00.00.00.90.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value3089306030253231288528672837294926372659264127802465245424422576230022782255234220792097209221901933194219262052180818011785162415341423129814441413
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest52.952.752.654.251.451.251.151.949.249.449.450.747.847.647.648.846.145.945.746.944.144.244.345.742.742.742.644.241.341.141.139.639.037.737.940.40.0
Percentage of Assets14.715.215.116.414.915.415.416.114.514.915.015.714.114.314.415.213.814.114.114.813.413.813.914.713.213.513.514.713.213.413.212.111.711.510.80.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-3.079-3.776-6.289-2.966-3.19-7.0-9.427-5.117-5.14-5.586-4.825-1.409-1.431-2.431-5.624-0.833-1.553-2.27-4.133-0.13-0.13-0.542-5.806-1.765-1.765-2.266-3.401-0.106-0.189-0.844-4.308-4.211-4.717-2.239-3.812-2.854-2.054
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.1-0.1-0.1-0.0-0.1-0.1-0.2-0.1-0.1-0.1-0.1-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.10.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value26922687267726702665266426592654264826442634262926242620261426082604259525962552254925472541252925262523251225022500249724912489248624842466245624532450244424412438243424212153
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.813.313.413.513.814.414.414.414.614.814.914.915.015.315.415.415.616.016.216.216.416.816.917.017.217.517.617.918.318.618.418.018.318.718.418.218.618.618.618.619.519.819.618.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value2671265026292609
Percentage of CommonStockValue99.899.699.899.8
Percentage of Assets13.314.314.915.3
Percentage of Assets srt:ParentCompany40.542.243.646.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity

us-gaap:AdditionalPaidInCapitalCommonStock

pnw:ArizonaPublicServiceCompany


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value2871287128712721272127212721272127212721272125712571257125712421242124212421237923792379237923792379237923792379237923792379237923792379237923792379237923792379237923792379
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.614.214.313.814.114.714.714.815.015.215.414.614.715.015.114.314.515.015.115.115.315.715.816.016.216.516.617.017.417.717.617.217.517.917.817.718.018.018.218.119.119.319.2
Percentage of Assets pnw:ArizonaPublicServiceCompany13.714.314.413.814.214.714.814.915.115.315.514.714.815.115.214.414.615.115.215.215.415.715.916.016.316.616.717.117.517.817.817.417.618.018.017.818.118.218.318.219.219.519.4

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value30893060302532312885286728372949263726592641278024652454244225762300227822552342207920972092219019331942192620521808180117851886165916481624172114761468153415791323135114231298
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets14.715.215.116.414.915.415.416.114.514.915.015.714.114.314.415.213.814.114.114.813.413.813.914.713.213.513.514.713.213.413.213.612.212.412.112.811.211.111.712.010.611.011.510.8

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value3284325232163418306830473011311928012816278829092570254825332661237723542331241321432155214822431982198819682084183318231804189916641650162417161469144915101553130713341403
Percentage of RetainedEarningsAccumulatedDeficit106.3106.3106.3105.8106.4106.3106.1105.8106.2105.9105.6104.6104.3103.8103.7103.3103.4103.3103.4103.0103.1102.8102.7102.4102.5102.4102.2101.6101.4101.3101.1100.7100.3100.1100.099.899.598.798.598.498.898.798.6
Percentage of Assets15.616.116.117.315.916.416.317.015.415.815.816.514.714.914.915.714.314.514.615.313.814.214.315.113.513.813.814.913.413.613.413.712.312.412.112.811.111.011.511.810.510.811.4
Percentage of Assets pnw:ArizonaPublicServiceCompany15.716.216.117.416.016.516.417.115.515.915.916.614.815.015.015.814.414.614.615.413.814.214.315.113.513.913.815.013.513.713.513.912.312.512.312.911.211.111.611.910.610.911.4

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value3025283726412442
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets15.115.415.014.4
Percentage of Assets srt:ParentCompany45.845.243.843.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-60578000.0-61512000.0-62796000.0-57491000.0-57875000.0-55579000.0-57096000.0-46538000.0-47636000.0-46501000.0-47708000.0-55074000.0-56624000.0-52341000.0-45002000.0-42117000.0-43626000.0-42863000.0-43822000.0-42146000.0-43719000.0-43770000.0-44748000.0-63990000.0-65600000.0-66382000.0-68141000.0-62402000.0-74217000.0-74902000.0-78053000.0-89335000.0-104460000.0-107930000.0-114010000.0-119480000.0-150320000.0-167780000.0-152160000.0-121540000.0-142680000.0-149320000.0-159770000.0-131590000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.5-0.5-0.4-0.5-0.6-0.6-0.6-0.8-0.8-0.9-0.9-1.1-1.3-1.2-0.9-1.1-1.2-1.3-1.1

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value-39832000.0-39991000.0-40918000.0-34125000.0-35025000.0-34197000.0-35522000.0-26303000.0-27276000.0-26027000.0-27107000.0-33756000.0-35159000.0-30851000.0-26983000.0-23616000.0-25112000.0-24375000.0-25423000.0-27097000.0-44040000.0-45651000.0-46476000.0-48333000.0-42816000.0-49400000.0-50111000.0-53372000.0-64436000.0-79552000.0-83103000.0-89095000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax65.865.065.259.460.561.562.256.557.356.056.861.362.158.960.056.157.656.958.060.668.869.670.070.968.666.666.968.472.176.277.078.1
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.5-0.6-0.6-0.7
Percentage of Assets pnw:ArizonaPublicServiceCompany-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.3-0.3-0.3-0.3-0.3-0.4-0.4-0.4-0.5-0.6-0.6-0.7

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value-62796000.0-57096000.0-47708000.0-45002000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets-0.3-0.3-0.3-0.3
Percentage of Assets srt:ParentCompany-1.0-0.9-0.8-0.8

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3.0793.7766.2892.9663.197.09.4275.1175.145.5864.8251.4091.4312.4315.6240.8331.5532.274.1330.130.130.5425.8061.7651.7652.2663.4010.1060.1890.8444.3081010104.2111.441.3596.4714.7175.2325.7685.7682.2393.812
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1171241191251201271221291241301251321271331291351301371321381331401351371321561511521471541451451371371291291211161081081019791111
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.70.70.70.70.70.70.70.70.80.80.80.80.80.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.70.9

us-gaap:MinorityInterest dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value1171241191251201271221291241301251321271331291351301371321381331401351371321561511521471541451451371371291291211161081081019691
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.799.799.799.299.299.1
Percentage of Assets0.60.60.60.60.60.70.70.70.70.70.70.70.70.80.80.80.80.80.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.7
Percentage of Assets pnw:ArizonaPublicServiceCompany0.60.60.60.60.60.70.70.70.70.70.70.80.70.80.80.80.80.90.80.90.90.90.90.90.91.11.11.11.11.21.11.11.01.01.01.00.90.90.80.80.80.80.7

us-gaap:MinorityInterest dei:LegalEntity, us-gaap:ConsolidatedEntities

pnw:ArizonaPublicServiceCompany, us-gaap:VariableInterestEntityPrimaryBeneficiary


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value117124119125120127122
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.70.7
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Minority
Period End2020-12-312019-12-312018-12-312017-12-31
Value119122125129
Percentage of MinorityInterest100.0100.0100.0100.0
Percentage of Assets0.60.70.70.8
Percentage of Assets srt:ParentCompany1.82.02.12.3

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value4.9639.577.1244.841.1314.8265.1316.1964.1719.7984.6384.9554.4115.4565.984.3439.44-0.9882.6713.4812.4335.397122.0743.69810142.1522.282.592172.3312.3632.574152.3652.5252.73.7893.5052.6892.506255
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4.9639.577.1244.841.1314.8265.1316.1964.1719.7984.6384.9554.4115.4565.984.3439.44-0.9882.6713.4812.4335.397122.0743.69810102.1532.5795.927
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.074.7100.0113.1228.7
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-09-302011-06-302010-09-302010-06-30
Value1011110.011110.011110.011-0.0016.9890.0014.6130.0158.1880.0019.1967.8990.02.9760.4212.6097.2717.381
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Minority
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-09-302011-06-302010-06-30
Value1011110.011110.011110.011-0.0016.9890.0014.6130.0158.1880.0019.1967.8990.02.630.02.613.286
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.088.40.0100.044.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

pnw:ArizonaPublicServiceCompany, us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-06-30
Value1011110.011110.011110.011-0.0016.9890.0014.6130.0158.1880.0019.1967.8990.02.637.5990.02.613.286
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.088.40.00.0100.044.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets pnw:ArizonaPublicServiceCompany us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value1011110.011110.011110.011-0.0016.9890.0014.6130.0158.1880.0019.1967.8990.02.9767.60.4212.609-55.7497.2717.381
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value110202194402185183121488172173317563228166346481150140258342278144272427250144212421215249270428242212241470343115205484192243180368215-13.675
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.029.026.232.119.927.718.241.119.823.442.044.523.524.145.640.715.920.734.929.430.421.337.235.628.121.529.336.023.836.338.737.126.430.934.942.439.118.630.743.024.136.924.733.026.8-2.2

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value111202158393183193177495146188266582228177356479152173243339272153268426252152221415213273295429240228252456351114194477201254189351218-64.208
Percentage of NetCashProvidedByUsedInOperatingActivities101.2100.581.497.699.1105.4145.3101.485.0108.584.1103.299.8106.3103.199.5101.2123.994.399.297.9106.798.299.8101.1106.1104.398.498.9109.9109.1100.499.5107.6104.696.9102.599.594.998.5104.5104.5104.795.5101.6469.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.229.121.431.419.829.226.441.616.925.435.345.923.425.647.040.516.125.633.029.129.822.736.535.528.422.830.535.423.639.942.337.326.333.236.541.140.018.529.242.425.238.625.931.527.2-10.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-301.499-348.069-322.315-302.982-311.361-341.16-298.964-304.375-273.125-254.513-279.508-234.22-318.003-361.093-388.898-351.399-339.556-348.684-241.612-295.009-343.152-372.305-293.445-263.285-276.686-232.817-288.911-240.789-184.46-208.508-437.445-200.078-195.158-176.72-219.876-238.396-179.623-235.099-247.715-205.963-135.534-192.795-198.681-99.35-67.441-210.428
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.1-50.0-43.5-24.2-33.5-51.5-44.6-25.6-31.4-34.4-37.0-18.5-32.6-52.1-51.2-29.7-35.9-51.4-32.7-25.3-37.5-55.0-40.0-22.0-31.1-34.7-39.8-20.5-20.4-30.4-62.5-17.4-21.3-25.7-31.7-21.5-20.4-37.9-37.1-18.3-16.9-29.2-27.1-8.9-8.4-33.9

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-305.654-351.737-325.548-304.894-313.404-342.409-291.546-308.144-276.52-259.883-281.928-238.609-311.93-354.979-382.737-344.108-331.328-342.98-235.876-283.296-336.69-363.479-289.764-262.415-275.147-232.706-288.361-240.789-184.46-208.508-437.445-200.078-195.166-176.72-219.876-238.396-179.623-235.099-248.266-245.434-147.412-192.838-199.514-167.717-173.212-207.089
Percentage of NetCashProvidedByUsedInInvestingActivities101.4101.1101.0100.6100.7100.497.5101.2101.2102.1100.9101.998.198.398.497.997.698.497.696.098.197.698.799.799.4100.099.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.2119.2108.8100.0100.4168.8256.898.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.6-50.5-43.9-24.3-33.7-51.7-43.5-25.9-31.8-35.1-37.3-18.8-32.0-51.2-50.4-29.1-35.1-50.6-31.9-24.3-36.8-53.7-39.5-21.9-30.9-34.7-39.7-20.5-20.4-30.4-62.5-17.4-21.3-25.7-31.7-21.5-20.4-37.9-37.2-21.8-18.4-29.2-27.3-15.0-21.6-33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1881036.0117569210157-156.2489681-97.098-268.5897719546-124.242190202-56.114-42.3399320346-164.344289273-179.753-125.7095340-120.342-44.247-36.53-75.052-164.189-173.159106-488.491194-79.168-46.696-68.003-123.323-100.67482
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.814.80.86.07.531.823.5-13.111.111.0-12.8-21.28.028.36.1-10.520.229.9-7.6-3.610.230.06.4-13.73.213.810.1-15.3-13.97.85.8-10.4-4.8-5.3-10.8-14.8-19.717.2-73.117.3-9.9-7.1-9.3-11.0-12.513.3

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value19110642878219294-159.11612572-44.072-282.5047317729-129.157180163-6.942-79.8329019238-166.4248165-178.174-123.3023432-122.65-47.124-47.668-83.107-166.752-171.454102-481.612237-72.602-57.27-52.373-57.142-11.292152
Percentage of NetCashProvidedByUsedInFinancingActivities101.7102.6712.5115.8118.591.360.3101.8130.288.645.4105.294.690.863.3104.094.780.612.4188.696.994.781.8101.385.387.789.899.198.164.679.9101.9106.5130.5110.7101.699.095.998.6122.391.7122.677.046.311.2185.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.115.25.86.98.929.014.2-13.414.49.7-5.8-22.37.525.73.8-10.919.224.1-0.9-6.89.928.45.2-13.92.712.19.1-15.2-13.65.04.6-10.6-5.1-6.9-12.0-15.0-19.516.5-72.121.1-9.1-8.7-7.2-5.1-1.424.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-3.056-42.766-121.958175-56.37652-19.56928-4.4610.343-59.22561-11.6011.5483.2185.721
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-6.1-16.514.0-6.18.0-2.92.4-0.50.0-7.84.8-1.20.20.40.5

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-2.582-42.774-124.483175-47.12743-19.37328-4.7250.373-59.11861-10.2410.153.2185.782
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect84.5100.0102.1100.283.681.799.099.9105.9108.799.899.988.39.7100.0101.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-6.1-16.814.0-5.16.5-2.92.4-0.50.1-7.84.8-1.10.00.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value41-11.077-21.6086840-18.086-85.182790.7063.62-0.2168333-0.22936116841011129623.46868102586.97822104238.81-6.83618756122214068-1.9894411952-41.005-21.0752300.12750
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value25-2.616-16.3333733-17.782-48.635107-9.42-1.205-26.392759.8390.53347114788.89950110563.39415048222.4277743258.6962118954121216171-2.0443312459-47.9625.521601047
Percentage of DeferredIncomeTaxExpenseBenefit62.423.675.654.681.998.357.1135.6-1334.3-33.312218.590.629.0-232.8127.998.393.585.9419.685.990.997.9218.747.037.734.8350.541.6106.998.7-319.6100.996.1104.956.6115.1105.3102.874.0103.9112.3117.0-26.269.68244.993.9

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value174176170172170173163168164167161164161163164154143147142140141140143145140141124125123122114128125124120120121118123124122123122120115114
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationDepletionAndAmortization dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value174176170172169173163168164167161164161162164153143147141140141140143145140141124125123122114128125124120120121118123124122123121120115113
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.499.699.799.799.799.799.799.7100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.099.599.2

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value42240.341-24.17222-5.19216-31.9753926-3.203-48.01362-25.7380.489-46.029-0.37622-9.68-104.85886-38.44318-89.88172-35.6736.818-37.89681-50.990.71-40.8597311-26.824-78.97548-39.35529-8.47762-24.543-27.562-8.62668-23.334
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayable dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4223-1.148-21.2721-4.03816-31.3953730-6.751-48.4364-24.5923.223-49.931-2.722-11.194-104.94283-34.99918-90.57573-35.6047.7-38.5281-52.6213.984-42.4527312-24.593-82.20849-39.81231-7.68268-18.168-19.084-6.30165-22.275
Percentage of IncreaseDecreaseInAccountsPayable100.597.6-336.788.095.677.897.198.295.8115.7210.8100.9102.995.5659.1108.5718.1103.2115.6100.197.191.095.0100.8101.399.8112.9101.699.2103.2561.1103.999.7108.191.7104.1101.4101.2107.390.6109.274.069.273.095.795.5

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value264.801-4.783.452-4.85-5.44533-2.9558.2313-14.488-2.3796.363164.802-3.5564.770.667-2.9475.989-0.026-1.5251.4084.2268.3169.995-7.07-6.0899.2480.1872.9644.912-5.3849.386-0.832.8617.25913-2.1347.30639-21.4216.735-5.434-7.337-6.24
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInventories dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value264.801-4.783.452-4.85-5.44533-2.9558.2313-14.488-2.3796.326164.748-3.5784.7020.631-2.9145.919-0.026-1.5251.4084.2268.3169.995-7.07-6.0899.2480.1872.9644.912-5.3849.386-0.832.8617.25913-2.1347.30639-21.4216.735-5.434-7.337-6.24
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.4100.898.9100.698.694.698.998.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value110202194402185183121488172173317563228166346481150140258342278144272427250144212421215249270428242212241470343115205484192243180368215-13.675
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.029.026.232.119.927.718.241.119.823.442.044.523.524.145.640.715.920.734.929.430.421.337.235.628.121.529.336.023.836.338.737.126.430.934.942.439.118.630.743.024.136.924.733.026.8-2.2

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value111202158393183193177495146188266582228177356479152173243339272153268426252152221415213273295429240228252456351114194477201254189351218-64.208
Percentage of NetCashProvidedByUsedInOperatingActivities101.2100.581.497.699.1105.4145.3101.485.0108.584.1103.299.8106.3103.199.5101.2123.994.399.297.9106.798.299.8101.1106.1104.398.498.9109.9109.1100.499.5107.6104.696.9102.599.594.998.5104.5104.5104.795.5101.6469.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.229.121.431.419.829.226.441.616.925.435.345.923.425.647.040.516.125.633.029.129.822.736.535.528.422.830.535.423.639.942.337.326.333.236.541.140.018.529.242.425.238.625.931.527.2-10.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value21940-14.518351198346831714922303191718.0942628017228582671269.32645261127209.53524814124322341393230252130-0.4811926293-9.67412239119-0.897
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.95.8-2.028.021.35.310.326.617.13.14.125.217.61.23.523.718.24.27.923.013.81.46.321.814.33.11.321.215.63.64.720.415.24.84.422.814.8-0.13.023.411.7-1.51.721.414.9-0.1

us-gaap:ProfitLoss dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22340-9.925355201407232315533493431821432289173286327413212482661292419255143283824314234342551323.6622125394-6.611122319416
Percentage of ProfitLoss101.899.168.4101.1101.8115.4105.8102.1104.0145.4159.5107.3106.5178.8123.2102.9101.099.5109.0102.3104.7130.0106.0101.6101.9118.1208.3102.9101.7115.2117.6103.7102.0104.9113.7101.2102.0-761.3108.796.6101.168.3103.597.079.5-1796.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.35.8-1.328.321.76.110.927.217.84.56.527.118.82.14.324.418.44.18.623.514.41.86.622.214.63.62.721.815.94.15.521.115.55.05.023.115.10.63.322.611.9-1.01.820.811.82.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

pnw:ArizonaPublicServiceCompany, us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.7677.4357.1845.475.1284.778
Percentage of ProfitLoss1.712.0-33.61.42.514.07.11.53.321.415.71.52.860.218.41.72.817.38.41.83.952.310.61.93.622.243.31.76.336.126.13.66.025.626.23.26.0-1614.82.87.7-56.52.14.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.70.40.50.70.70.40.60.70.60.40.50.70.60.40.50.70.70.40.50.70.70.40.50.70.60.41.01.31.20.70.91.21.20.70.91.30.70.90.80.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value21935-14.798350197356731815028443381779.5992728416923582691277.25343261125191525113419
Percentage of ProfitLoss100.187.1101.999.799.3101.498.7100.5100.8124.1143.7105.8103.6118.6104.8101.298.182.2100.6100.5100.877.895.499.798.395.9165.0101.295.479.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.05.1-2.027.921.25.310.126.817.33.85.926.718.31.43.724.017.93.47.923.113.91.16.021.814.13.02.221.414.92.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3.7394.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8734.8734.8744.8734.8614.8624.6054.6054.1254.1258.9268.9258.5548.5558.3918.3928.048.047.7667.7767.4267.1545.4615.1194.769
Percentage of ProfitLoss1.712.0-33.61.42.514.07.11.53.321.415.71.52.860.218.41.72.817.38.41.83.952.310.61.93.622.243.31.76.336.126.13.66.025.626.23.26.0-1616.62.87.6-56.52.14.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.70.70.40.50.70.70.40.60.70.60.40.50.70.60.40.50.70.70.40.50.70.70.40.50.70.60.41.01.31.20.70.91.21.20.70.91.30.70.90.80.50.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value21535-19.391346193296331214417263151663.2212127616723532631214.45341257122165.4124313215
Percentage of ProfitLoss98.388.0133.698.697.586.092.998.596.778.684.398.597.239.881.698.397.282.791.698.296.147.789.498.196.477.856.798.393.763.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.65.1-2.627.620.84.59.526.216.62.43.424.817.10.52.823.317.73.47.222.513.30.75.621.413.82.40.720.814.62.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.147116.1732.9892.8486.2821.892.7611.651123.4072.9512.652103.9493.6622.8949.997-8.7052.548.36116
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-301.499-348.069-322.315-302.982-311.361-341.16-298.964-304.375-273.125-254.513-279.508-234.22-318.003-361.093-388.898-351.399-339.556-348.684-241.612-295.009-343.152-372.305-293.445-263.285-276.686-232.817-288.911-240.789-184.46-208.508-437.445-200.078-195.158-176.72-219.876-238.396-179.623-235.099-247.715-205.963-135.534-192.795-198.681-99.35-67.441-210.428
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.1-50.0-43.5-24.2-33.5-51.5-44.6-25.6-31.4-34.4-37.0-18.5-32.6-52.1-51.2-29.7-35.9-51.4-32.7-25.3-37.5-55.0-40.0-22.0-31.1-34.7-39.8-20.5-20.4-30.4-62.5-17.4-21.3-25.7-31.7-21.5-20.4-37.9-37.1-18.3-16.9-29.2-27.1-8.9-8.4-33.9

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-305.654-351.737-325.548-304.894-313.404-342.409-291.546-308.144-276.52-259.883-281.928-238.609-311.93-354.979-382.737-344.108-331.328-342.98-235.876-283.296-336.69-363.479-289.764-262.415-275.147-232.706-288.361-240.789-184.46-208.508-437.445-200.078-195.166-176.72-219.876-238.396-179.623-235.099-248.266-245.434-147.412-192.838-199.514-167.717-173.212-207.089
Percentage of NetCashProvidedByUsedInInvestingActivities101.4101.1101.0100.6100.7100.497.5101.2101.2102.1100.9101.998.198.398.497.997.698.497.696.098.197.698.799.799.4100.099.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.2119.2108.8100.0100.4168.8256.898.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-30.6-50.5-43.9-24.3-33.7-51.7-43.5-25.9-31.8-35.1-37.3-18.8-32.0-51.2-50.4-29.1-35.1-50.6-31.9-24.3-36.8-53.7-39.5-21.9-30.9-34.7-39.7-20.5-20.4-30.4-62.5-17.4-21.3-25.7-31.7-21.5-20.4-37.9-37.2-21.8-18.4-29.2-27.3-15.0-21.6-33.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value317363355294336340333316281259279218318361381334344348260283353378297247279251291229181207434204193182218245183240241255195191195174176202
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireProductiveAssets dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value317363355294336340333316281259279218315355373328337343255275347369293247279250291229181207434204193182218245183240241249196191195174178199
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.199.9100.0100.099.098.397.998.397.898.498.097.198.597.798.899.9100.0100.099.8100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.197.4100.3100.0100.0100.0101.798.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1881036.0117569210157-156.2489681-97.098-268.5897719546-124.242190202-56.114-42.3399320346-164.344289273-179.753-125.7095340-120.342-44.247-36.53-75.052-164.189-173.159106-488.491194-79.168-46.696-68.003-123.323-100.67482
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.814.80.86.07.531.823.5-13.111.111.0-12.8-21.28.028.36.1-10.520.229.9-7.6-3.610.230.06.4-13.73.213.810.1-15.3-13.97.85.8-10.4-4.8-5.3-10.8-14.8-19.717.2-73.117.3-9.9-7.1-9.3-11.0-12.513.3

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value19110642878219294-159.11612572-44.072-282.5047317729-129.157180163-6.942-79.8329019238-166.4248165-178.174-123.3023432-122.65-47.124-47.668-83.107-166.752-171.454102-481.612237-72.602-57.27-52.373-57.142-11.292152
Percentage of NetCashProvidedByUsedInFinancingActivities101.7102.6712.5115.8118.591.360.3101.8130.288.645.4105.294.690.863.3104.094.780.612.4188.696.994.781.8101.385.387.789.899.198.164.679.9101.9106.5130.5110.7101.699.095.998.6122.391.7122.677.046.311.2185.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.115.25.86.98.929.014.2-13.414.49.7-5.8-22.37.525.73.8-10.919.224.1-0.9-6.89.928.45.2-13.92.712.19.1-15.2-13.65.04.6-10.6-5.1-6.9-12.0-15.0-19.516.5-72.121.1-9.1-8.7-7.2-5.1-1.424.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pnw:ArizonaPublicServiceCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-03-31
Value0.015011239410880.02972970.04971502950.00.0298297-3.8062550.02474450.02420.0350250157382852500.00.0321041250.0323190.02950.01750.0
Percentage of ProceedsFromIssuanceOfLongTermDebt0.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.0100.0100.00.0100.00.0100.00.0

us-gaap:ProceedsFromIssuanceOfLongTermDebt dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value1123945910.02972970.04970.02950.00.00.0297-3.8062550.02474450.02420.035025032382852500.00.0321040.00.0323190.0
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.054.40.0100.0100.00.0100.00.0100.00.00.00.0100.0100.0100.00.0100.0100.00.0100.00.0100.0100.020.4100.0100.0100.00.00.0100.0100.00.00.0100.0100.00.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1150.06501501000.00.05001000.0820.01250.016276700.01480.050322320.2524537542640121752269114.15
Percentage of RepaymentsOfLongTermDebt100.00.0100.0100.0100.00.00.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Repayments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1150.02001501000.00.05001000.0820.00.00.016276700.0230.050321070.252453754160.495120.17180.2428.9390.357
Percentage of RepaymentsOfLongTermDebt100.00.030.8100.0100.00.00.0100.0100.00.0100.00.00.00.0100.0100.0100.00.016.10.0100.0100.046.3100.0100.0100.097.71.2100.00.182.40.380.78.6

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

pnw:ArizonaPublicServiceCompany, pnw:CityOfFarmingtonNewMexicoPollutionControlRevenueRefundingBond


Repayments
Period End2020-11-19
Value49
Percentage of RepaymentsOfLongTermDebt0.0

pnw:ArizonaPublicServiceCompany, pnw:CityOfFarmingtonNewMexicoPollutionControlRevenueRefundingBond1994SeriesB


Repayments
Period End2020-11-19
Value65
Percentage of RepaymentsOfLongTermDebt0.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value91919186868686818180807676757571717171676767676464645862626260585858585555555553575555555551
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDividendsCommonStock dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value93939388888888828282827777777773737272696969696565656562626262595959595747575757575726565642
Percentage of PaymentsOfDividendsCommonStock101.9101.9102.0101.9102.0102.0101.7102.0102.1102.2102.3102.2102.3102.4102.4102.4102.5102.4102.5102.5102.6102.6102.6102.6102.7102.7111.7100.1100.0100.0102.9102.8103.0103.0103.1103.185.3103.2103.2106.899.9103.347.2103.1103.382.7

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value21351992180716902945272334723211308130382646
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value21432033181217422999276434713211308130382646
Percentage of DeferredTaxLiabilities100.4102.0100.3103.1101.8101.5100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value996904894950958992101195110821243907
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsNet dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value97286388989790495095586210211197855
Percentage of DeferredTaxAssetsNet97.595.499.494.594.395.894.490.694.496.394.3

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value454340413634444113313612720163
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefits dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value454340413634444113313512619962
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.099.999.999.399.398.6

pnw:AllRiskInsuranceForPropertyDamageAndDecontaminationAtPaloVerde dei:LegalEntity

pnw:AllRiskInsuranceForPropertyDamageAndDecontaminationAtPaloVerde

pnw:ArizonaPublicServiceCompany


All
Period End2021-06-302021-03-312020-12-31
Value0.028000.0
Percentage of AllRiskInsuranceForPropertyDamageAndDecontaminationAtPaloVerde0.0100.00.0

pnw:AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding

pnw:AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval

pnw:ArizonaPublicServiceCompany, pnw:LostFixedCostRecoveryMechanisms


Amountof
Period End2021-02-152020-02-142019-02-152018-02-15
Value38263660
Percentage of AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval100.0100.0100.0100.0

pnw:AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:SubsequentEventType

pnw:ArizonaPublicServiceCompany, pnw:LostFixedCostRecoveryMechanisms, us-gaap:SubsequentEvent


Amountof
Period End2021-02-152020-02-142019-02-15
Value382636
Percentage of AmountofAdjustmentRepresentingProratedSalesLossesPendingApproval100.0100.0100.0

pnw:AnnualPaymentLimitationWithRespectToMaximumPotentialRetrospectiveAssessment dei:LegalEntity

pnw:AnnualPaymentLimitationWithRespectToMaximumPotentialRetrospectiveAssessment

pnw:ArizonaPublicServiceCompany


Annual
Period End2021-06-302021-03-312020-12-31
Value0.0170.0
Percentage of AnnualPaymentLimitationWithRespectToMaximumPotentialRetrospectiveAssessment0.0100.00.0

pnw:AnnualRentalPaymentsSaleLeasebackTransaction dei:LegalEntity, pnw:SaleLeasebackTransactionPeriod, us-gaap:ConsolidatedEntities

pnw:AnnualRentalPaymentsSaleLeasebackTransaction

pnw:ArizonaPublicServiceCompany, pnw:SaleLeasebackTransactionPeriod2021Through2033, us-gaap:VariableInterestEntityPrimaryBeneficiary


Annual
Period End2021-06-302021-03-31
Value0.021
Percentage of AnnualRentalPaymentsSaleLeasebackTransaction0.0100.0

pnw:AssetPurchaseAgreementAdditionalPercentageShareofCostofControl dei:LegalEntity, us-gaap:CreditFacility, us-gaap:EnvironmentalRemediationContingency, us-gaap:JointlyOwnedUtilityPlant

pnw:AssetPurchaseAgreementAdditionalPercentageShareofCostofControl

pnw:ArizonaPublicServiceCompany, pnw:NaturalGasTollingLetterOfCredit, pnw:RegionalHazeRules, pnw:FourCornersUnits4And5


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value07.006.9300.070000.070
Percentage of AssetPurchaseAgreementAdditionalPercentageShareofCostofControl0.0100.00.0100.00.0100.00.00.00.0100.00.0

pnw:AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:EnvironmentalRemediationSite

pnw:AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate

pnw:ArizonaPublicServiceCompany, pnw:CoalCombustionWaste, pnw:FourCorners


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value0.0275.00.00.0220.00.00.0220.00.00.0220.00.07.0150.00.0150.0
Percentage of AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate0.0100.0100.00.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.00.00.0100.00.0

pnw:ArizonaPublicServiceCompany, pnw:CoalCombustionWaste, pnw:NavajoGeneratingStation


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.01.00.00.00.01.00.00.00.01.00.00.00.01.00.00.00.01.00.00.00.01.00.00.0
Percentage of AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate0.03.70.00.00.04.50.00.00.04.50.00.00.04.50.00.00.06.70.00.00.06.70.00.0

pnw:AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:EnvironmentalRemediationSite, us-gaap:JointlyOwnedUtilityPlant

pnw:ArizonaPublicServiceCompany, pnw:RegionalHazeRules, pnw:FourCorners, pnw:FourCornersUnits4And5


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value0.0450.00.00.0450.00.00.0450.00.00.0450.00.00.0450.00.0450.0
Percentage of AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate0.0166.70.00.00.0204.50.00.00.0204.50.00.00.0204.50.00.00.0300.00.00.0300.00.0

pnw:AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate dei:LegalEntity, us-gaap:Range, us-gaap:EnvironmentalRemediationContingency, us-gaap:EnvironmentalRemediationSite

pnw:ArizonaPublicServiceCompany, srt:Maximum, pnw:CoalCombustionWaste, pnw:ChollaandFourCorners


Asset
Period End2021-06-302021-03-312020-12-31
Value0.0150.0
Percentage of AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate0.055.60.0

pnw:ArizonaPublicServiceCompany, srt:Minimum, pnw:CoalCombustionWaste, pnw:Cholla


Asset
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0161.00.00.0150.00.00.0150.00.0
Percentage of AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate0.059.320.00.00.068.20.00.00.068.20.00.0

pnw:ArizonaPublicServiceCompany, srt:Minimum, pnw:CoalCombustionWaste, pnw:ChollaandFourCorners


Asset
Period End2021-06-302021-03-312020-12-31
Value0.010.00.0
Percentage of AssetPurchaseAgreementSiteContingencyIncreaseinLossExposureNotAccruedBestEstimate0.037.00.0

pnw:CollateralAssuranceBasedOnRatingTriggers dei:LegalEntity

pnw:CollateralAssuranceBasedOnRatingTriggers

pnw:ArizonaPublicServiceCompany


Collateral
Period End2021-06-302021-03-312020-12-31
Value0.0630.0
Percentage of CollateralAssuranceBasedOnRatingTriggers0.0100.00.0

pnw:CostsRelatedToInvestigationAndStudyUnderSuperfundSite dei:LegalEntity, us-gaap:LossContingenciesByNatureOfContingency

pnw:CostsRelatedToInvestigationAndStudyUnderSuperfundSite

pnw:ArizonaPublicServiceCompany, pnw:ContaminatedGroundwaterWells


Costs
Period End2021-06-302021-03-312020-12-31
Value03000000.00
Percentage of CostsRelatedToInvestigationAndStudyUnderSuperfundSite0.0100.00.0

pnw:DeferredInvestmentTaxCredit

pnw:DeferredInvestmentTaxCredit


Deferred
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3122000.0529000.05155000.02921000.0465000.04632000.02303000.0353000.04619000.02631000.0147000.01099000.02850000.0344000.0
Percentage of DeferredInvestmentTaxCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:DeferredInvestmentTaxCredit dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Deferred
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value3122000.0529000.05155000.02921000.0465000.04632000.02303000.0353000.04619000.02631000.0147000.01099000.02850000.0344000.0
Percentage of DeferredInvestmentTaxCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:DividendsCommonStockNet

pnw:DividendsCommonStockNet


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1870.0050.001-176.0860.008
Percentage of DividendsCommonStockNet100.0100.0100.0100.0100.0

pnw:DividendsCommonStockNet dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Dividends
Period End2021-06-302020-06-30
Value187176
Percentage of DividendsCommonStockNet99.9-100.0

pnw:DividendsCommonStockNet dei:LegalEntity, us-gaap:StatementEquityComponents

pnw:ArizonaPublicServiceCompany, us-gaap:RetainedEarnings


Dividends
Period End2021-06-302020-06-30
Value187176
Percentage of DividendsCommonStockNet99.9-100.0

pnw:DividendsCommonStockNet us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1870.0050.001-176.0860.008
Percentage of DividendsCommonStockNet100.0100.0100.0100.0100.0

pnw:EmployeeMedicalClaimsAmount dei:LegalEntity

pnw:EmployeeMedicalClaimsAmount

pnw:ArizonaPublicServiceCompany


Employee
Period End2020-12-31
Value14
Percentage of EmployeeMedicalClaimsAmount100.0

pnw:ForwardComponentofPSARate1 dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:ForwardComponentofPSARate1

pnw:ArizonaPublicServiceCompany, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


Forward
Period End2021-04-012021-03-312021-02-012020-02-012019-02-012018-02-012017-08-192017-02-01
Value-0.004444-0.0044440.003434-0.0020860.0005360.0020090.000876-0.001027
Percentage of ForwardComponentofPSARate1100.0100.0100.0100.0100.0100.0100.0100.0

pnw:ForwardComponentofPSARate1 dei:LegalEntity, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:ArizonaPublicServiceCompany, srt:ScenarioForecast, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


Forward
Period End2021-11-012021-02-01
Value-0.0044440.003434
Percentage of ForwardComponentofPSARate10.0100.0

pnw:HistoricalComponentofPSARate1 dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:HistoricalComponentofPSARate1

pnw:ArizonaPublicServiceCompany, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


Historical
Period End2021-04-012021-03-312021-02-012020-02-012019-02-012018-02-012017-08-192017-02-01
Value0.0059880.0059880.000110.001630.0011220.002546-0.000321-0.000321
Percentage of HistoricalComponentofPSARate1100.0100.0100.0100.0100.0100.0100.0100.0

pnw:HistoricalComponentofPSARate1 dei:LegalEntity, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:ArizonaPublicServiceCompany, srt:ScenarioForecast, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


Historical
Period End2021-11-012021-02-01
Value0.0079880.00011
Percentage of HistoricalComponentofPSARate10.0100.0

pnw:IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization

pnw:IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value11-0.564-2.752-4.48-3.007-1.80810151012244130203.386-4.49-9.491-4.1729.78614112.388-17.6677.865.815.6149.03313108.0228.032129.7991.122-24.822-37.506-29.874-24.514-34.139-52.256-37.524-31.238-26.555-40.432-29.541-25.953
Percentage of IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value11-0.564-2.752-4.48-3.007-1.80810151012244130203.386-4.49-9.491-4.1729.78614112.388-17.6677.865.815.6149.03313108.0228.032129.7991.122-24.822-37.506-29.874-24.514-34.139-52.256-37.524-31.238-26.555-40.432-29.541-25.953
Percentage of IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:ArizonaPublicServiceCompany, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-30
Value11-0.564-2.752-4.48-3.007-1.80810151012244130203.386-4.49-9.491-4.1729.78514112.3887.86
Percentage of IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:IncreaseDecreaseInOtherNonCurrentAssets

pnw:IncreaseDecreaseInOtherNonCurrentAssets


Increase
Period End2021-03-312020-03-31
Value36-81.143
Percentage of IncreaseDecreaseInOtherNonCurrentAssets100.0100.0

pnw:IncreaseDecreaseInOtherNonCurrentAssets dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Increase
Period End2021-03-312020-03-31
Value36-82.178
Percentage of IncreaseDecreaseInOtherNonCurrentAssets99.6101.3

pnw:IncreaseDecreaseinAmountofAdjustmentRepresentingProratedSalesLosses dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding

pnw:IncreaseDecreaseinAmountofAdjustmentRepresentingProratedSalesLosses

pnw:ArizonaPublicServiceCompany, pnw:LostFixedCostRecoveryMechanisms


Increase
Period End2021-02-152020-02-142019-02-152018-02-152017-01-132016-01-15
Value11-9.6-24.5-3.0177.9
Percentage of IncreaseDecreaseinAmountofAdjustmentRepresentingProratedSalesLosses100.0100.0100.0100.0100.0100.0

pnw:IncreaseDecreaseinAmountofAdjustmentRepresentingProratedSalesLosses dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:SubsequentEventType

pnw:ArizonaPublicServiceCompany, pnw:LostFixedCostRecoveryMechanisms, us-gaap:SubsequentEvent


Increase
Period End2021-02-152020-02-142019-02-15
Value-11.8-9.6-24.5
Percentage of IncreaseDecreaseinAmountofAdjustmentRepresentingProratedSalesLosses-100.0100.0100.0

pnw:LitigationSettlementAmountAwardedToCustomers dei:LegalEntity, us-gaap:LitigationCase

pnw:LitigationSettlementAmountAwardedToCustomers

pnw:ArizonaPublicServiceCompany, pnw:A2017SettlementAgreementAndItsCustomerEducationAndOutreachPlan


Litigation
Period End2021-02-22
Value24
Percentage of LitigationSettlementAmountAwardedToCustomers100.0

pnw:LitigationSettlementAmountAwardedToCustomers dei:LegalEntity, us-gaap:LitigationCase, us-gaap:SubsequentEventType

pnw:ArizonaPublicServiceCompany, pnw:A2017SettlementAgreementAndItsCustomerEducationAndOutreachPlan, us-gaap:SubsequentEvent


Litigation
Period End2021-02-22
Value24
Percentage of LitigationSettlementAmountAwardedToCustomers100.0

pnw:MaximumAmountthatCouldbeIncurredunderRetrospectiveAssessmentofNEILPolicies dei:LegalEntity

pnw:MaximumAmountthatCouldbeIncurredunderRetrospectiveAssessmentofNEILPolicies

pnw:ArizonaPublicServiceCompany


Maximum
Period End2021-06-302021-03-312020-12-31
Value0.0220.0
Percentage of MaximumAmountthatCouldbeIncurredunderRetrospectiveAssessmentofNEILPolicies0.0100.00.0

pnw:MaximumAssessmentPerReactorForEachNuclearIncident dei:LegalEntity

pnw:MaximumAssessmentPerReactorForEachNuclearIncident

pnw:ArizonaPublicServiceCompany


Maximum
Period End2021-06-302021-03-312020-12-31
Value0.01370.0
Percentage of MaximumAssessmentPerReactorForEachNuclearIncident0.0100.00.0

pnw:MaximumPotentialRetrospectiveAssessmentPerIncident dei:LegalEntity

pnw:MaximumPotentialRetrospectiveAssessmentPerIncident

pnw:ArizonaPublicServiceCompany


Maximum
Period End2021-06-302021-03-312020-12-31
Value0.01200.0
Percentage of MaximumPotentialRetrospectiveAssessmentPerIncident0.0100.00.0

pnw:MiscellaneousOtherNonoperatingExpense

pnw:MiscellaneousOtherNonoperatingExpense


Miscellaneous
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.6511.573383.0941.7462.1861.2112.3770.3781.4163.0822.5830.3191.4071.2792.7840.1941.420.4142.2530.2181.4710.2552.6470.0071.5420.6182.09-2.2172.1720.2791.9720.1481.7085.431.7970.2222.1650.4181.1881.5570.2540.3570.9610.852
Percentage of MiscellaneousOtherNonoperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:MiscellaneousOtherNonoperatingExpense dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Miscellaneous
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.6461.572380.8931.7462.1861.2110.3780.3791.4113.0821.0270.3151.4061.6311.0780.7292.1240.7241.0981.0542.3580.9611.390.322.1940.9520.83-1.6762.2860.8081.1491.1622.7126.321.0970.8572.661.0520.9082.2510.9651.1490.9191.64
Percentage of MiscellaneousOtherNonoperatingExpense99.299.999.628.9100.0100.0100.015.9100.399.6100.039.898.799.9127.538.7375.8149.6174.948.7483.5160.3376.952.54571.4142.3154.039.775.6105.2289.658.3785.1158.8116.461.0386.0122.9251.776.4144.6379.9321.895.6192.5

pnw:MiscellaneousOtherNonoperatingIncome

pnw:MiscellaneousOtherNonoperatingIncome


Miscellaneous
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value40000.03000.03000.02000.0137000.08000.013000.022000.05000.023000.01000.091000.02000.02000.0355000.055000.097000.03000.015000.06000.0001000.012000.0-9000.0125000.0-6453000.02263000.02286000.02116000.0-21000.044000.02000.0682000.028000.0113000.070000.0155000.079000.012000.02000.06000.0155000.015000.0308000.0
Percentage of MiscellaneousOtherNonoperatingIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:MiscellaneousOtherNonoperatingIncome dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Miscellaneous
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value36000.01000.02000.02000.0137000.08000.013000.022000.06000.022000.01000.092000.01000.02000.0225000.0354000.0625000.0416000.01362000.0384000.0649000.0205000.0688000.0676000.0226000.0572000.0-5791000.02582000.02804000.02624000.0711000.0719000.0545000.01320000.0459000.0754000.0941000.0403000.01149000.0524000.0876000.0698000.05773000.015000.01684000.0
Percentage of MiscellaneousOtherNonoperatingIncome90.033.366.7100.0100.0100.0100.0100.0120.095.7100.0101.150.0100.063.4643.6644.313866.79080.06400.00.00.068800.05633.3-2511.1457.689.7114.1122.7124.0-3385.71634.127250.0193.51639.3667.31344.3260.01454.44366.743800.011633.33724.5100.0546.8

pnw:NonoperatingCosts

pnw:NonoperatingCosts


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
Value4.1021.9374.9992.4532.292.6581.8312.6473.4812.7042.6722.483.2781.6464.4111.9783.4011.9592.5992.5022.0852.0494.7632.3281.9522.2492.6811.9852.622.3722.2562.0281.991.9321.8921.6452.3891.852.1121.8071.6291.4870.7962.9331.237
Percentage of NonoperatingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:NonoperatingCosts dei:LegalEntity

pnw:ArizonaPublicServiceCompany


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
Value3.6151.7784.1581.9062.1132.4821.6472.4483.0492.4672.5312.3343.0571.5394.5061.973.7532.1663.6362.7142.7191.9665.0052.2481.8782.5172.6442.2982.8682.5872.7582.2632.2852.322.0162.0072.9411.7412.6741.9222.41.8993.4022.9691.751
Percentage of NonoperatingCosts88.191.883.277.792.393.490.092.587.691.294.794.193.393.5102.299.6110.3110.6139.9108.5130.495.9105.196.696.2111.998.6115.8109.5109.1122.3111.6114.8120.1106.6122.0123.194.1126.6106.4147.3127.7427.4101.2141.6

pnw:PSARate1 dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:PSARate1

pnw:ArizonaPublicServiceCompany, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


P
Period End2021-04-012021-03-312021-02-012020-02-012019-02-012018-02-012017-08-192017-02-01
Value0.0015440.0015440.003544-0.0004560.0016580.0045550.000555-0.001348
Percentage of PSARate1100.0100.0100.0100.0100.0100.0100.0100.0

pnw:PSARateInPriorYears1 dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:PSARateInPriorYears1

pnw:ArizonaPublicServiceCompany, pnw:CostRecoveryMechanisms, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


P
Period End2021-02-012020-02-012019-02-012016-02-01
Value0.004-0.002115-0.0028970.001678
Percentage of PSARateInPriorYears1100.0100.0100.0100.0

pnw:PSARateInPriorYears1 dei:LegalEntity, pnw:PublicUtilitiesRegulatoryRegulatoryMatters, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:ArizonaPublicServiceCompany, pnw:CostRecoveryMechanisms, srt:ScenarioForecast, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


P
Period End2021-02-01
Value0.004
Percentage of PSARateInPriorYears1100.0

pnw:PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds

pnw:PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds


Paymentsto
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value20838019823119719519821313017921020212813176
Percentage of PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Paymentsto
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value20838019823119719519821313017921020212813176
Percentage of PaymentstoAcquireInvestmentstobeHeldinDecommissioningTrustFundAndOtherSpecialUseFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.099.9100.0100.0

pnw:PercentageOfShareOfCostOfControl dei:LegalEntity, us-gaap:EnvironmentalRemediationContingency, us-gaap:JointlyOwnedUtilityPlant

pnw:PercentageOfShareOfCostOfControl

pnw:ArizonaPublicServiceCompany, pnw:RegionalHazeRules, pnw:FourCornersUnits4And5


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-30
Value063.0062.3700.630000.630000.630000.630
Percentage of PercentageOfShareOfCostOfControl0.0100.00.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.00.0100.00.0

pnw:ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds

pnw:ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds


Proceedsfrom
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value20737921121619619519821113017920918412713076
Percentage of ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Proceedsfrom
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value20737921121619619519821113017920918412713076
Percentage of ProceedsfromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.099.9100.0100.0

pnw:ProceedsfromRepaymentsofShorttermDebtNet

pnw:ProceedsfromRepaymentsofShorttermDebtNet


Proceedsfrom
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value30449-226.975260-76.675-369.998191172
Percentage of ProceedsfromRepaymentsofShorttermDebtNet100.0100.0100.0100.0100.0100.0100.0100.0

pnw:ProceedsfromRepaymentsofShorttermDebtNet dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Proceedsfrom
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-31
Value2951992190.0-373.973219157
Percentage of ProceedsfromRepaymentsofShorttermDebtNet96.9401.084.3-0.0101.1114.791.2

pnw:RateMatterPotentialExpenses dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMatterPotentialExpenses

pnw:ArizonaPublicServiceCompany, pnw:RetailRateCaseFilingwithArizonaCorporationCommission, pnw:ArizonaCorporationCommission


Rate
Period End2020-10-02
Value110
Percentage of RateMatterPotentialExpenses100.0

pnw:RateMatterRequestSecondYearEnergyPriceforExportedEnergy1 dei:LegalEntity, us-gaap:StatementScenario, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMatterRequestSecondYearEnergyPriceforExportedEnergy1

pnw:ArizonaPublicServiceCompany, srt:ScenarioForecast, pnw:NetMetering, pnw:ArizonaCorporationCommission


Rate
Period End2021-10-01
Value10.5
Percentage of RateMatterRequestSecondYearEnergyPriceforExportedEnergy1100.0

pnw:RateMattersAmountAuthorizedToBeCollected dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMattersAmountAuthorizedToBeCollected

pnw:ArizonaPublicServiceCompany, pnw:ArizonaRenewableEnergyStandardandTariff2018, pnw:ArizonaCorporationCommission


Rate
Period End2021-06-07
Value68
Percentage of RateMattersAmountAuthorizedToBeCollected100.0

pnw:RateMattersIncreaseDecreaseInCostRecoveryWholesaleCustomerRates dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMattersIncreaseDecreaseInCostRecoveryWholesaleCustomerRates

pnw:ArizonaPublicServiceCompany, pnw:OpenAccessTransmissionTariff, pnw:UnitedStatesFederalEnergyRegulatoryCommission


Rate
Period End2021-06-012020-06-012019-06-01
Value-3.24.821
Percentage of RateMattersIncreaseDecreaseInCostRecoveryWholesaleCustomerRates100.0100.0100.0

pnw:RateMattersIncreaseDecreaseInRetailRevenueRequirements dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMattersIncreaseDecreaseInRetailRevenueRequirements

pnw:ArizonaPublicServiceCompany, pnw:OpenAccessTransmissionTariff, pnw:UnitedStatesFederalEnergyRegulatoryCommission


Rate
Period End2021-06-012020-06-012019-06-01
Value-28400000.0-7400000.04900000.0
Percentage of RateMattersIncreaseDecreaseInRetailRevenueRequirements100.0100.0100.0

pnw:RateMattersIncreaseDecreaseinCostRecovery dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMattersIncreaseDecreaseinCostRecovery

pnw:ArizonaPublicServiceCompany, pnw:EnvironmentalImprovementSurcharge, pnw:UnitedStatesFederalEnergyRegulatoryCommission


Rate
Period End2021-02-012020-02-01
Value108.75
Percentage of RateMattersIncreaseDecreaseinCostRecovery100.0100.0

pnw:ArizonaPublicServiceCompany, pnw:OpenAccessTransmissionTariff, pnw:UnitedStatesFederalEnergyRegulatoryCommission


Rate
Period End2021-06-012020-06-012019-06-012018-06-012017-06-01
Value4.0-6.1-4.9-22.735
Percentage of RateMattersIncreaseDecreaseinCostRecovery0.00.00.00.00.0

pnw:RateMattersIncreaseDecreaseinCostRecovery dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType

pnw:ArizonaPublicServiceCompany, pnw:EnvironmentalImprovementSurcharge, pnw:UnitedStatesFederalEnergyRegulatoryCommission, us-gaap:SubsequentEvent


Rate
Period End2021-02-012020-02-01
Value10-8.75
Percentage of RateMattersIncreaseDecreaseinCostRecovery100.0-100.0

pnw:RateMattersIncreaseDecreaseinCostRecoveryExcessOfAnnualAmount dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMattersIncreaseDecreaseinCostRecoveryExcessOfAnnualAmount

pnw:ArizonaPublicServiceCompany, pnw:EnvironmentalImprovementSurcharge, pnw:UnitedStatesFederalEnergyRegulatoryCommission


Rate
Period End2021-02-01
Value1500000.0
Percentage of RateMattersIncreaseDecreaseinCostRecoveryExcessOfAnnualAmount100.0

pnw:RateMattersIncreaseDecreaseinCostRecoveryExcessOfAnnualAmount dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType

pnw:ArizonaPublicServiceCompany, pnw:EnvironmentalImprovementSurcharge, pnw:UnitedStatesFederalEnergyRegulatoryCommission, us-gaap:SubsequentEvent


Rate
Period End2021-02-01
Value1500000.0
Percentage of RateMattersIncreaseDecreaseinCostRecoveryExcessOfAnnualAmount100.0

pnw:RateMattersIncreaseDecreaseinCostRecoveryRetailCustomerRates dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RateMattersIncreaseDecreaseinCostRecoveryRetailCustomerRates

pnw:ArizonaPublicServiceCompany, pnw:OpenAccessTransmissionTariff, pnw:UnitedStatesFederalEnergyRegulatoryCommission


Rate
Period End2021-06-012020-06-012019-06-012018-06-01
Value7.2104.7-26.9
Percentage of RateMattersIncreaseDecreaseinCostRecoveryRetailCustomerRates100.0100.0100.0100.0

pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactCostDeferrals dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant, us-gaap:SubsequentEventType

pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactCostDeferrals

pnw:ArizonaPublicServiceCompany, pnw:SouthernCaliforniaEdisonCompany, pnw:FourCornersUnits4And5, us-gaap:SubsequentEvent


Recommended
Period End2021-08-02
Value61
Percentage of RecommendedRateAdjustmentAnnualizedCustomerImpactCostDeferrals100.0

pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactDisallowanceOfInvestments dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant, us-gaap:SubsequentEventType

pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactDisallowanceOfInvestments

pnw:ArizonaPublicServiceCompany, pnw:SouthernCaliforniaEdisonCompany, pnw:FourCornersUnits4And5, us-gaap:SubsequentEvent


Recommended
Period End2021-08-02
Value399
Percentage of RecommendedRateAdjustmentAnnualizedCustomerImpactDisallowanceOfInvestments100.0

pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactEstimatedWriteoffOfCostDeferrals dei:LegalEntity, us-gaap:BusinessAcquisition, us-gaap:JointlyOwnedUtilityPlant

pnw:RecommendedRateAdjustmentAnnualizedCustomerImpactEstimatedWriteoffOfCostDeferrals

pnw:ArizonaPublicServiceCompany, pnw:SouthernCaliforniaEdisonCompany, pnw:FourCornersUnits4And5


Recommended
Period End2021-06-30
Value75
Percentage of RecommendedRateAdjustmentAnnualizedCustomerImpactEstimatedWriteoffOfCostDeferrals100.0

pnw:RegulatoryClauseDeferredFuelAndPurchasedPowerCostsAmountAboveAnnualCap dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency

pnw:RegulatoryClauseDeferredFuelAndPurchasedPowerCostsAmountAboveAnnualCap

pnw:ArizonaPublicServiceCompany, pnw:PowerSupplyAdjustor, pnw:ArizonaCorporationCommission


Regulatory
Period End2021-02-01
Value215
Percentage of RegulatoryClauseDeferredFuelAndPurchasedPowerCostsAmountAboveAnnualCap100.0

pnw:RegulatoryCostRecoveryIncomeDebtDeferralRefunded dei:LegalEntity, us-gaap:RegulatoryAsset

pnw:RegulatoryCostRecoveryIncomeDebtDeferralRefunded

pnw:ArizonaPublicServiceCompany, pnw:OctotilloDeferral


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6.3916.392-3.6466.6636.7036.1447.4337.5555.2940.00.00.00.0
Percentage of RegulatoryCostRecoveryIncomeDebtDeferralRefunded100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

pnw:ArizonaPublicServiceCompany, pnw:SCRDeferral


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.0894.086144.264.2493.144.894.924.8874.8444.9634.914.188
Percentage of RegulatoryCostRecoveryIncomeDebtDeferralRefunded64.063.9-396.963.963.451.165.865.192.30.00.00.00.0

pnw:RegulatoryCostRecoveryIncomeDebtDeferralRefunded us-gaap:RegulatoryAsset

pnw:OctotilloDeferral


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value6.3916.392-3.6466.6636.7036.1447.4337.5555.2940.00.00.0
Percentage of RegulatoryCostRecoveryIncomeDebtDeferralRefunded100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

pnw:SCRDeferral


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.0894.086144.264.2493.144.894.924.8874.8444.9634.914.188
Percentage of RegulatoryCostRecoveryIncomeDebtDeferralRefunded64.063.9-396.963.963.451.165.865.192.30.00.00.00.0

pnw:RegulatoryCostRecoveryRevenue

pnw:RegulatoryCostRecoveryRevenue


Regulatory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value201414111514111312209.0112010.0
Percentage of RegulatoryCostRecoveryRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:RemainingNuclearLiabilityInsuranceThroughMandatoryIndustryWideRetrospectiveAssessmentProgram dei:LegalEntity

pnw:RemainingNuclearLiabilityInsuranceThroughMandatoryIndustryWideRetrospectiveAssessmentProgram

pnw:ArizonaPublicServiceCompany


Remaining
Period End2021-06-302021-03-312020-12-31
Value-100.0132000.0
Percentage of RemainingNuclearLiabilityInsuranceThroughMandatoryIndustryWideRetrospectiveAssessmentProgram100.0100.00.0

pnw:VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount dei:LegalEntity, us-gaap:ConsolidatedEntities

pnw:VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount

pnw:ArizonaPublicServiceCompany, us-gaap:VariableInterestEntityPrimaryBeneficiary


Variable
Period End2021-06-302021-03-312020-12-31
Value0.03072.0
Percentage of VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount0.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value3533000.03528000.01521000.01712000.02862000.02927000.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForFundsUsedDuringConstructionInvestingActivities

us-gaap:AllowanceForFundsUsedDuringConstructionInvestingActivities


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-5199000.0-4994000.0-5042000.0-4663000.0-4749000.0-4076000.0-3883000.0-3486000.0-4494000.0-6665000.0-6221000.0-5913000.0-6291000.0-6755000.0-6734000.0-6000000.0-4906000.0-4472000.0-5122000.0-4320000.0-5301000.0-5227000.0-4203000.0-3518000.0-4322000.0-4216000.0-4418000.0-3479000.0-3790000.0-3770000.0-4000000.0-3235000.0-3636000.0-3990000.0-4543000.0-3830000.0-3447000.0-3151000.0-3987000.0-6939000.0-3856000.0-3576000.0-4225000.0-6158000.0-3315000.0-3080000.0
Percentage of AllowanceForFundsUsedDuringConstructionInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForFundsUsedDuringConstructionInvestingActivities dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-5199000.0-4994000.0-5042000.0-4663000.0-4749000.0-4076000.0-3883000.0-3486000.0-4494000.0-6665000.0-6221000.0-5913000.0-6291000.0-6755000.0-6734000.0-6000000.0-4906000.0-4472000.0-5122000.0-4320000.0-4999000.0-5040000.0-4164000.0-3492000.0-4311000.0-4216000.0-4418000.0-3479000.0-3790000.0-3770000.0-4000000.0-3235000.0-3636000.0-3990000.0-4543000.0-3830000.0-3447000.0-3151000.0-3987000.0-6939000.0-3856000.0-3576000.0-4225000.0-6163000.0-3072000.0-3019000.0
Percentage of AllowanceForFundsUsedDuringConstructionInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.094.396.499.199.399.7100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.192.798.0

us-gaap:AssetRetirementObligationAccretionExpense dei:LegalEntity

us-gaap:AssetRetirementObligationAccretionExpense

pnw:ArizonaPublicServiceCompany


Asset
Period End2020-12-31
Value9.198
Percentage of AssetRetirementObligationAccretionExpense100.0

us-gaap:AssetRetirementObligationLiabilitiesSettled dei:LegalEntity

us-gaap:AssetRetirementObligationLiabilitiesSettled

pnw:ArizonaPublicServiceCompany


Asset
Period End2020-12-31
Value4.099
Percentage of AssetRetirementObligationLiabilitiesSettled100.0

us-gaap:AssetRetirementObligationRevisionOfEstimate dei:LegalEntity

us-gaap:AssetRetirementObligationRevisionOfEstimate

pnw:ArizonaPublicServiceCompany


Asset
Period End2020-12-312015-12-312015-09-302015-06-302015-03-31
Value24-6.4440.06.018
Percentage of AssetRetirementObligationRevisionOfEstimate100.0100.00.0100.0100.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains

pnw:ArizonaPublicServiceCompany


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.9681.6242.9334.53.3132.654.7362.6431.1033.7280.6531.4840.815170.5980.9392.3672.464.0332.2822.4381.1892.01.01.01.02.01.01.02.01.01.02.02.01.02.02.02.03.02.01.02.01.0
Percentage of AvailableForSaleSecuritiesGrossRealizedGains100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedGains dei:LegalEntity, us-gaap:InvestmentType

pnw:ArizonaPublicServiceCompany, pnw:NuclearDecommissioningTrusts


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.9681.4482.9334.53.3132.5464.7322.6431.1033.7280.653
Percentage of AvailableForSaleSecuritiesGrossRealizedGains100.089.2100.0100.0100.096.199.9100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses dei:LegalEntity

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses

pnw:ArizonaPublicServiceCompany


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value4.1480.9550.7651.6212.2271.5072.361.71.4056.5621.9652.9782.0478.5211.0221.1592.4533.6253.3451.351.7862.2252.01.01.00.02.01.02.02.03.01.01.01.01.01.01.01.01.01.02.01.0
Percentage of AvailableForSaleSecuritiesGrossRealizedLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesGrossRealizedLosses dei:LegalEntity, us-gaap:InvestmentType

pnw:ArizonaPublicServiceCompany, pnw:NuclearDecommissioningTrusts


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4.1480.9550.751.6212.2271.5072.361.71.4056.5621.965
Percentage of AvailableForSaleSecuritiesGrossRealizedLosses100.0100.098.0100.0100.0100.0100.0100.0100.0100.0100.0

pnw:ArizonaPublicServiceCompany, pnw:OtherSpecialUseFunds


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00.0150.00.00.00.00.00.00.00.0
Percentage of AvailableForSaleSecuritiesGrossRealizedLosses0.02.00.00.00.00.00.00.00.00.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value257929-3.793-13.05310056-22.95712953333-20.9968637121.211792336-4.4215947-2.267-17.1856204.467-5.2424212.4732.3296.57514-3.4641.12313
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid dei:LegalEntity

pnw:ArizonaPublicServiceCompany


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value257929-3.793-13.05310056-22.95712953333-20.9498635123.644782434-4.4215947-2.267-17.1856204.467-5.2424212.4732.3296.57514-3.4641.12313
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.899.994.497.1300.999.6105.496.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.661.571.5601.481.4801.391.3901.311.3101.251.2501.191.1901.141.1401.091.09501.050.5250.52501.050.5250.52501.050.525
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

pnw:RiskManagementAssets, us-gaap:CreditConcentrationRisk


Concentration
Period End2021-03-312020-09-30
Value59.037.0
Percentage of ConcentrationRiskPercentage1100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

pnw:TwoCounterparties, pnw:RiskManagementAssets, us-gaap:CreditConcentrationRisk


Concentration
Period End2021-06-30
Value35.0
Percentage of ConcentrationRiskPercentage10.0

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1 us-gaap:ConsolidatedEntities, us-gaap:CreditFacility

us-gaap:DebtInstrumentBasisSpreadOnVariableRate1

srt:ParentCompany, pnw:TermLoan


Debt
Period End2021-03-31
Value1.4
Percentage of DebtInstrumentBasisSpreadOnVariableRate1100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain dei:LegalEntity

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

pnw:ArizonaPublicServiceCompany


Debt
Period End2021-06-302020-06-30
Value1406000.04500000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain dei:LegalEntity, us-gaap:InvestmentType

pnw:ArizonaPublicServiceCompany, pnw:NuclearDecommissioningTrusts


Debt
Period End2021-06-302020-06-30
Value1406000.04500000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss dei:LegalEntity

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

pnw:ArizonaPublicServiceCompany


Debt
Period End2021-06-302020-06-30
Value1146000.01621000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss dei:LegalEntity, us-gaap:InvestmentType

pnw:ArizonaPublicServiceCompany, pnw:NuclearDecommissioningTrusts


Debt
Period End2021-06-302020-06-30
Value1146000.01621000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2641000.02405000.00000000000-1280000.0-1279000.0-1104000.0-1454000.0-1147000.0-1147000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-3989000.0-3985000.0-8653000.0-8653000.0-8295000.0-9011000.0-10646000.0-10646000.0-10053000.0-11239000.0-8020000.0-8021000.0-8259000.0-7782000.0-11976000.0-11975000.0-11460000.0-12489000.0-10179000.0-10179000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-151.0-165.70.00.00.00.00.00.00.00.00.00.00.00.0935.6936.31038.0858.9887.4887.4

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-9427000.0-9427000.0-9393000.0-9394000.0-9394000.0-9394000.0-9455000.0-9456000.0-9455000.0-9455000.0-9460000.0-9461000.0-9461000.0-9461000.0-9460000.0-9461000.0-9461000.0-9461000.0-9470000.0-9471000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssetsTransferredToFromPlan

us-gaap:DefinedBenefitPlanAssetsTransferredToFromPlan


Defined
Period End2021-01-04
Value106
Percentage of DefinedBenefitPlanAssetsTransferredToFromPlan100.0

us-gaap:DefinedBenefitPlanAssetsTransferredToFromPlan us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-01-04
Value-106.0
Percentage of DefinedBenefitPlanAssetsTransferredToFromPlan-100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-01-04
Value106
Percentage of DefinedBenefitPlanAssetsTransferredToFromPlan100.0

us-gaap:DefinedBenefitPlanAssetsTransferredToFromPlan us-gaap:RetirementPlanType, us-gaap:SubsequentEventType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit, us-gaap:SubsequentEvent


Defined
Period End2021-01-04
Value-106.0
Percentage of DefinedBenefitPlanAssetsTransferredToFromPlan-100.0

us-gaap:PensionPlansDefinedBenefit, us-gaap:SubsequentEvent