WTRG


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

Table of contents



us-gaap:CommonStockValue

us-gaap:SharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostsAndExpenses
us-gaap:DisposalGroupClassification
us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
us-gaap:StatementGeographical, us-gaap:DisposalGroupClassification

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

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

us-gaap:InterestExpense

us-gaap:InterestIncomeOperating

us-gaap:NetIncomeLoss
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

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

us-gaap:OtherNonoperatingIncomeExpense
us-gaap:MajorCustomers, us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:MajorCustomers, us-gaap:ProductOrService
us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments
us-gaap:MajorCustomers, us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:MajorCustomers, us-gaap:StatementScenario, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:MajorCustomers, us-gaap:ProductOrService
us-gaap:ProductOrService
us-gaap:StatementBusinessSegments

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:PublicUtilityRegulatedOrUnregulatedStatus, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent
us-gaap:ConsolidatedEntities

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ConsolidatedEntities

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:PublicUtilityRegulatedOrUnregulatedStatus, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementScenario, us-gaap:BusinessAcquisition

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:AccountsPayableCurrent

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedLiabilitiesCurrent
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesCurrent
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebtCurrent
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:LongTermDebt
us-gaap:DebtInstrument

us-gaap:LongTermDebtNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:LongTermDebtAndCapitalLeaseObligations

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

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementScenario

us-gaap:TreasuryStockValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity, us-gaap:CreditFacility
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:SubsequentEventType

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:IncomeTaxAuthority
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther
us-gaap:StatementEquityComponents
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:CapitalExpendituresIncurredButNotYetPaid
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanContributionsByEmployer
us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType

us-gaap:Depreciation

us-gaap:DepreciationAndAmortization
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:DisposalGroupClassification
us-gaap:DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainLossOnSaleOfOtherAssets
us-gaap:BusinessAcquisition
us-gaap:GoodwillPeriodIncreaseDecrease

us-gaap:GoodwillPurchaseAccountingAdjustments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities

us-gaap:IncrementalCommonSharesAttributableToAcceleratedShareRepurchaseAgreements

us-gaap:IncrementalCommonSharesAttributableToEquityForwardAgreements

us-gaap:IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityCommitmentFeePercentage

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable

us-gaap:PaymentsForProceedsFromOtherInvestingActivities
us-gaap:LongtermDebtType
us-gaap:PaymentsOfDebtIssuanceCosts
us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireBuildings
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:PaymentsToAcquireWasteWaterSystems

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromOtherEquity

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
dei:LegalEntity
us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount
us-gaap:StatementGeographical
us-gaap:StatementGeographical, us-gaap:SubsequentEventType
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:Vesting
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
us-gaap:StatementEquityComponents
us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation

us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UtilitiesOperatingExpenseGasAndPetroleumPurchased
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:UtilitiesOperatingExpenseTaxes
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementScenario

wtrg:DebtComponentOfAllowanceForFundsUsedDuringConstruction
us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType
wtrg:DefinedBenefitPlanAmortizationOfActuarialLoss
us-gaap:RetirementPlanType

wtrg:IncreaseDecreaseInInventoriesReceivablesAndPrepayments

wtrg:InsuranceProceeds

wtrg:InterestExpenseNetOfAfudc
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

wtrg:NonCashCustomerAdvancesAndContributionsInAidOfConstruction

wtrg:NonOperatingIncomeExpenseOther
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:BusinessAcquisition
wtrg:NumberOfCustomers
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:Range, us-gaap:AwardType
wtrg:PercentageOfTargetAwardAmountParticipantMayEarn

wtrg:ProceedsFromAdvancesForConstructionFinancingActivities

wtrg:ProceedsFromRepaymentsOfBankOverdraftsLessShortTermDebt

wtrg:ProceedsFromSaleOfUtilitySystemAndOther

wtrg:ReclassificationOfGoodwillAcquisitionAdjustment
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

wtrg:RepaymentsOfAdvancesForConstructionFinancingActivities
us-gaap:AwardType
wtrg:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue
us-gaap:AwardType
wtrg:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodWeightedAverageGrantDateFairValue

wtrg:TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities
us-gaap:AccountsPayableRelatedPartiesCurrent

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableNet
us-gaap:ConsolidatedEntities
us-gaap:AccountsReceivableRelatedPartiesCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable
dei:LegalEntity
us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent

us-gaap:AssetsNet
dei:LegalEntity

us-gaap:AvailableForSaleSecurities

us-gaap:BankAcceptancesExecutedAndOutstanding

us-gaap:BankOverdrafts

us-gaap:BilledContractReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCosts

us-gaap:CapitalizationLongtermDebtAndEquity
us-gaap:ConsolidatedEntities, us-gaap:StatementGeographical
us-gaap:ContractWithCustomerLiability

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContributionsInAidOfConstruction

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument

us-gaap:DeferredCostsAndOtherAssets
us-gaap:ConsolidatedEntities

us-gaap:DeferredCostsCurrentAndNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOtherLossCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:FairValueByLiabilityClass, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:RetirementPlanType
us-gaap:FairValueByLiabilityClass, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:RetirementPlanType

us-gaap:DerivativeForwardPrice
us-gaap:StatementScenario
us-gaap:DisposalGroupClassification
us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration
us-gaap:StatementGeographical, us-gaap:DisposalGroupClassification
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EnergyRelatedInventoryNaturalGasInStorage
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:SubsequentEventType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EstimatedInsuranceRecoveries

us-gaap:InterestPayableCurrent
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:InvestmentsFairValueDisclosure

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCredit
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityCapacityAvailableForTradePurchases
us-gaap:CreditFacility
us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity
us-gaap:DebtInstrument
us-gaap:ConsolidatedEntities
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:LoansPayableFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:DebtInstrument

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:LongTermDebtPercentageBearingFixedInterestRate
us-gaap:DebtInstrument
us-gaap:LongtermDebtWeightedAverageInterestRate

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyEstimateOfPossibleLoss
us-gaap:DebtInstrument
us-gaap:NotesPayableToBank
us-gaap:ConsolidatedEntities
us-gaap:NotesReceivableRelatedParties
us-gaap:ConsolidatedEntities
us-gaap:NotesReceivableRelatedPartiesNoncurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:DebtInstrument
us-gaap:OtherLongTermNotesPayable

us-gaap:OtherReceivables

us-gaap:OtherRestrictedAssets
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PostemploymentBenefitsLiabilityNoncurrent

us-gaap:PublicUtilitiesAmountOfAllowanceForFundsUsedDuringConstructionEquityCostsCapitalizedOnlyForRateMakingPurposes

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1
us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus
us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
us-gaap:ProductOrService, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentEquipment
us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus

us-gaap:RecordedUnconditionalPurchaseObligationDueAfterFifthYear
us-gaap:RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased

us-gaap:RecordedUnconditionalPurchaseObligationDueInFifthYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInFourthYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInSecondYear

us-gaap:RecordedUnconditionalPurchaseObligationDueInThirdYear

us-gaap:RecordedUnconditionalPurchaseObligationDueWithinOneYear

us-gaap:RegulatoryAssets
us-gaap:BusinessAcquisition, us-gaap:RegulatoryAsset
us-gaap:DebtInstrument
us-gaap:RegulatoryAsset

us-gaap:RegulatoryAssetsCurrent

us-gaap:RegulatoryAssetsNoncurrent
us-gaap:StatementScenario

us-gaap:RegulatoryLiabilities
us-gaap:BusinessAcquisition, us-gaap:RegulatoryAsset
us-gaap:RegulatoryAsset

us-gaap:RegulatoryLiabilityCurrent

us-gaap:RegulatoryLiabilityNoncurrent

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:SecuredDebt
us-gaap:DebtInstrument
us-gaap:MeasurementInputType, us-gaap:RetirementPlanType
us-gaap:ServicingAssetMeasurementInput
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:AwardType
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:TreasuryStockShares

us-gaap:UnbilledReceivablesCurrent
us-gaap:DebtInstrument
us-gaap:UnsecuredDebt

wtrg:AccruedInterestUncertainTaxPositions

wtrg:AuthorizedIncreaseInRevenueFromUtilityService
us-gaap:StatementGeographical
wtrg:BilledRevenueSubjectToRefund
dei:LegalEntity, us-gaap:StatementBusinessSegments
wtrg:BusinessCombinationCustomerRateCredits
us-gaap:BusinessAcquisition
us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
us-gaap:StatementGeographical, us-gaap:BusinessAcquisition
wtrg:BusinessCombinationPipelineCost
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
wtrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebtNet
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
wtrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebtNet
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
wtrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesRegulatoryLiabilities
us-gaap:BusinessAcquisition
wtrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedRegulatoryAssets
us-gaap:StatementScenario, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
wtrg:BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostsPreTax

wtrg:CapitalizedCostsIncludedInPropertyPlantAndEquipment

wtrg:DebtInstrumentCarryingAmountNoncurrent

wtrg:DeferredTaxAssetsCostsExpensedForBookNotDeductedForTaxPrincipallyAccruedExpenses

wtrg:DeferredTaxAssetsCustomersAdvancesForConstruction

wtrg:DeferredTaxAssetsUnrecoveredPurchasedGasCosts

wtrg:DeferredTaxLiabilitiesDeferredInvestmentTaxCredit

wtrg:DeferredTaxLiabilitiesDeferredTaxesAssociatedWithGrossUpOfRevenuesNecessaryToRecoverInRatesEffectOfTemporaryDifferences

wtrg:DeferredTaxLiabilitiesTaxEffectOfRegulatoryAssetForPostretirementBenefits

wtrg:DeferredTaxLiabilitiesUtilityPlantPrincipallyDueToDepreciationAndDifferencesInBasisOfFixedAssetsDueToVariationInTaxAndBookAccounting
us-gaap:RetirementPlanType
wtrg:DefinedBenefitPlanActuarialGainLossNotIncludedInPeriodicBenefitCost
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
wtrg:DefinedBenefitPlanFairValuePercentageOfPlanAssets
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
wtrg:DisposalGroupIncludingDiscontinuedOperationReserve

wtrg:EstimatedAnnualCommitmentsToPurchaseWaterThroughNextFiveYears

wtrg:LiabilitiesNoncurrentLessLongTermDebt

wtrg:LiabilitiesOtherThanLongTermDebtIncludingOperatingLeaseNoncurrent

wtrg:LoansPayableCurrentNotIncludedInCurrentPortionOfLongTermDebt
us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus
wtrg:NonUtilityPlantAndEquipment

wtrg:OperatingLeaseImpairments

wtrg:OperatingLeaseRightOfUseAssetNet
us-gaap:RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchased
wtrg:RecordedUnconditionalPurchaseObligationToBePaidYearOneThroughFive
dei:LegalEntity
wtrg:RetainedEarningsIncludedInNonControllingInterest
us-gaap:StatementGeographical
wtrg:UtilityCustomersByGeographicOperatingSegmentPercentage

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Cash And Cash Equivalents At Carrying Value
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Treasury Stock Value
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
Shares
Treasury Stock Shares
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

Tables

  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:CommonStockValue █████▅▅▁▁124.5124.441124.228124.171124.117109.471109.44490.74190.499
us-gaap:SharesOutstanding NANANANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █████▆▅▁▁255.441254.969255.162254.434255.054232.464219.79178.552178.357
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ████▆▆▅▁▁254.769254.565254.28254.167236.122232.053219.055178.213177.923
us-gaap:EarningsPerShareBasic ▄█▂▃▂▄▃▁▅0.320.720.220.290.220.380.250.090.44
us-gaap:EarningsPerShareDiluted ▄█▂▃▂▄▃▁▅0.320.720.220.290.20.380.250.090.44
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wtrg:Water248.177NANA234.086NANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wtrg:NaturalGas▃█▂▃▁141.562343.11588.88146.8838.544NANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,wtrg:Water▇▅█▅▃▆▃▁248.177228.353255.725234.086216.197242.856218.006200.22NA
 Operating Margin us-gaap:StatementBusinessSegments us-gaap:CorporateAndOther▅█▃▃▁▁▁▁▁7.29312.0974.0423.5020.8440.770.8860.9120.776
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
 TTM Greenblatt ROC _ _▄█▃▃▁▃▂▁▃129.328232.352105.233123.11973.497106.4780.94967.439104.293
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:EmployeeStockOption▁▂▃▃▆██▄▂0.090.2110.2790.2650.5010.6370.6610.3280.159
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:RestrictedStock▁▇██▁0.0120.0930.1030.0990.018NANANANA
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:RestrictedStockUnitsRSU█▅▄▄▃▁▁▂▃0.7610.6040.550.5540.4860.3950.4120.4250.493
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType us-gaap:StockCompensationPlan▄▄▄▃▄▁█▄▁0.1750.1750.1750.170.1750.1580.2020.180.16
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType wtrg:PerformanceShareUnits▆█▄▄▁▁▃▄1.291.6410.9180.9660.510.5840.8530.997NA
us-gaap:ComprehensiveIncomeNetOfTax ▄█▃▃▂▄▃▁▄80.914183.68955.73274.62951.78188.48954.90316.92478.216
us-gaap:CostsAndExpenses ▅█▅▅▃▁▁▁▁267.704351.213243.414261.349182.088137.156137.943133.693121.844
 us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal us-gaap:DisposalGroupClassification us-gaap:DisposalGroupNotDiscontinuedOperationsNANA0.469NANANANANANA
 us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal us-gaap:StatementGeographical,us-gaap:DisposalGroupClassification stpr:TX,us-gaap:DisposalGroupNotDiscontinuedOperationsNANA0.469NANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▄█▃▄▂▄▃▁▄84.7188.45559.76375.09144.65786.93652.7328.75482.151
us-gaap:IncomeTaxExpenseBenefit ▇██▆▂▅▄▁█3.7864.7664.0310.462-7.124-1.553-2.171-8.173.935
us-gaap:InterestExpense ██▇█▄▃▁▂▁52.03650.76949.86151.66635.12232.64323.30927.8525.359
us-gaap:InterestIncomeOperating ▁▁▁▁▅█▇▁▁0.3380.3870.1140.1965.0359.688.4180.0190.044
us-gaap:NetIncomeLoss ▄█▃▃▂▄▃▁▄80.914183.68955.73274.62951.78188.48954.90316.92478.216
us-gaap:OperatingIncomeLoss ▄█▃▃▁▃▂▁▃129.328232.352105.233123.11973.497106.4780.94967.439104.293
us-gaap:OtherNonoperatingIncomeExpense ▅▇█▄▁▁▁▂▃1.9413.4714.1270.722-1.679-1.494-1.912-0.872-0.325
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:BusinessAcquisition,us-gaap:StatementBusinessSegments wtrg:CustomerRateCredits,wtrg:PeoplesGasAcquisition,wtrg:WastewaterUtilitySystemsInVariousStatesNANA4.08NANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Commercial,wtrg:NaturalGas▃█▂▃▁14.8541.0217.99311.9643.929NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Commercial,wtrg:Wastewater█▇▆▇▅▃▂▁5.2684.9954.7944.9424.4514.0373.7973.566NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Commercial,wtrg:Water▅▃▇▂▄█▄▁37.96733.18841.69331.31835.342.88335.15530.291NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:CustomerRateCredits,wtrg:WastewaterNANA-0.323NANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:CustomerRateCredits,wtrg:WaterNANA-3.757NANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:FireProtection,wtrg:Water▇█▄▆▅▅▂▁8.9199.0458.5358.7698.6468.5658.268.078NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:GasTransportation,wtrg:NaturalGas▄█▃▄▁37.78977.80326.24840.2359.469NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Industrial,wtrg:NaturalGas▁▄▆█▁0.5210.9571.4071.880.433NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Industrial,wtrg:Wastewater▃▅▁▂▅▁██0.410.4450.3880.3960.4460.390.4870.481NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Industrial,wtrg:Water▄▁█▂▁▇▃▁7.7476.9899.0227.126.9428.737.4566.865NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:OtherUtility,wtrg:NaturalGas▅█▅▅▁5.9719.1795.7635.6841.731NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:OtherUtility,wtrg:Other▂▃█▇▂▁▂▁3.4893.8266.5485.8313.2042.9843.3622.89NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:OtherWastewater,wtrg:Wastewater█▅▄▃▁▁▄▄2.5641.751.4621.2630.7240.7581.4231.396NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:OtherWater,wtrg:Water█▅▄▁▂▂▆█12.71410.4439.5246.6957.1597.33211.03812.808NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Residential,wtrg:NaturalGas▃█▂▃▁83.76214.19446.91386.19122.9NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Residential,wtrg:Wastewater███▇▅▃▂▁24.31224.36124.17523.63122.61421.43720.26319.947NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:ProductOrService wtrg:Residential,wtrg:Water▆▄█▆▃▆▃▁144.415132.856157.387146.621127.014145.643126.55114.047NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:StatementBusinessSegments wtrg:CustomerRateCredits,wtrg:NaturalGasUtilityNANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:StatementBusinessSegments wtrg:CustomerRateCredits,wtrg:WastewaterUtilitySystemsInVariousStatesNANA4.08NANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:StatementScenario,us-gaap:BusinessAcquisition wtrg:CustomerRateCredits,srt:ScenarioForecast,wtrg:PeoplesGasAcquisitionNANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers,us-gaap:StatementScenario,us-gaap:StatementBusinessSegments wtrg:CustomerRateCredits,srt:ScenarioForecast,wtrg:NaturalGasUtilityNANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wtrg:NaturalGas▃█▂▃▁142.891343.15488.324145.95438.462NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wtrg:Other▂▃█▇▂▁▂▁3.4893.8266.5485.8313.2042.9843.3622.89NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wtrg:Wastewater█▇▆▆▄▂▂▁32.55431.55130.49630.23228.23526.62225.9725.39NA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService wtrg:Water▇▄█▅▃▇▃▁211.762192.521222.404200.523185.061213.153188.459172.089NA
us-gaap:Revenues ▅█▄▄▂▂▁▁▁397.032583.565348.647384.468255.585243.626218.892201.132226.137
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:Assets ██▇▇▇▄▃▁▁13933.99213821.91513399.48813028.40812928.9869340.979180.357080.956757.101
us-gaap:LiabilitiesAndStockholdersEquity ██▇▇▇▄▃▁▁13933.99213821.91513399.48813028.40812928.9869340.979180.357080.956757.101
us-gaap:StockholdersEquity ████▇▆▆▁▁4836.8154810.3414635.7534635.5344613.1633862.5623824.7741992.5852045.738
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:AssetsCurrent ▂▂▂▂▂██▁▁304.732348.109311.238312.454368.0082178.8932117.92143.775149.277
us-gaap:CashAndCashEquivalentsAtCarryingValue ▁▁▁▁▁██▁▁8.40418.0468.4947.22731.8482030.5681974.0764.0534.264
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁▁▁▁▁██▁▁8.40418.0468.4947.22731.8482030.5681974.0764.0534.264
us-gaap:AccountsReceivableNetCurrent ▅▇▄▆█▁▃▂▄129.151168.464126.774152.902179.57275.573110.74196.41114.286
us-gaap:InventoryRawMaterialsAndSupplies █▃▃▂▁27.75524.09223.65122.6622.224NANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▆▇█▇▆▁▂▄▁29.4433.54737.55134.19432.02412.75315.25124.09613.027
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:PropertyPlantAndEquipmentGross ██▇▇▆▂▂▁▁11977.70711771.22511321.04411012.310795.117998.8617881.3137747.537447.24
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment █▇▅▄▃▂▂▁▁2270.3442201.892060.5841961.541905.2741801.9091766.4651727.191706.439
us-gaap:PropertyPlantAndEquipmentNet ██▇▇▇▂▂▁▁9707.3639569.3359260.469050.768889.8366196.9526114.8486020.345740.801
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures NANA1.7575.9435.4736.2537.4486.846.689
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities srt:ParentCompanyNANANANANANANANANA
us-gaap:Goodwill █████▁▁▁▁2340.8362340.9052333.6272333.5352351.52652.70152.72253.06953.242
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▃█6.7326.9867.829NANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇▇███▁▁▁57.15458.51362.02263.69765.06412.88313.16413.088NA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:AccountsPayableCurrent ▆▆█▆▅▁▁▁▁131.815121.593158.197124.117115.61157.58957.46355.1156.026
us-gaap:AccruedIncomeTaxesCurrent ▁▇▄▅█▂▂▃▂15.30738.36528.42630.73541.87617.56817.96222.56319.12
us-gaap:AccruedLiabilitiesCurrent ▇▇█▆▅▁▁▁▁108.071108.244120.592100.47890.33745.53143.00640.12442.962
us-gaap:LiabilitiesCurrent ▃▄▆▃█▂▂▃▁469.155503.394666.959448.179827.374352.123398.949434.099288.175
us-gaap:LongTermDebtCurrent ▁▁▇▁▃▆█▅▂79.6680.351205.84187.839115.011178.116221.393156.455108.075
us-gaap:OperatingLeaseLiabilityCurrent NANANANANANANANANA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:LongTermDebt NANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:DebtInstrument wtrg:NotesNANA6.709NANANANANANA
us-gaap:LongTermDebtNoncurrent ██▇▇▆▂▂▁▁5648.2325547.9365152.9735174.6014729.0342898.2982749.2042462.8552266.46
us-gaap:DeferredFinanceCostsNoncurrentNet █▇▇▇▄▆▄▁▁41.19837.30938.00538.76928.39335.60729.8720.26420.689
us-gaap:LongTermDebtAndCapitalLeaseObligations NANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▆▃▂▁1349.8731310.01238.3281215.8981192.9NANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:OtherPostretirementBenefitPlansDefinedBenefitNANANANANANANANANA
 us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType us-gaap:PensionPlansDefinedBenefitNANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▂▁▁▂▁█▇▇█50.33446.3148.08750.40548.864100.02597.36596.897101.761
us-gaap:OperatingLeaseLiabilityNoncurrent ▇▇███▁▁51.99253.54257.559.33860.9711.711.913NANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANANANANANANA1.574NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANANANANANANA1.351NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANANANANANANA1.123NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANANANANANANA0.749NA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANANANANANANA15.757NA
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:StockholdersEquity ████▇▆▆▁▁4836.8154810.3414635.7534635.5344613.1633862.5623824.7741992.5852045.738
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest NANANANANANANANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:AdditionalPaidInCapitalNANANANANANANANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:CommonStockNANANANANANANANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNANANANANANANANANA
 us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents us-gaap:TreasuryStockNANANANANANANANANA
us-gaap:CommonStockValue █████▅▅▁▁124.5124.441124.228124.171124.117109.471109.44490.74190.499
us-gaap:AdditionalPaidInCapitalCommonStock █████▆▆▁▁3393.3723386.3763372.3763366.6953361.5862633.1932633.271827.339814.004
us-gaap:RetainedEarningsAccumulatedDeficit █▇▃▃▃▂▁▁▃1403.0411383.8571220.791226.6221209.5011197.61159.7531152.1971217.007
us-gaap:TreasuryStockValue ██▆▆▆▃▃▃▁84.09884.33381.64181.95482.04177.70277.69477.69275.772
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅█▆▅▃▅▁▃▄157.387255.481175.453149.68195.521140.4868.25679.287121.044
us-gaap:NetCashProvidedByUsedInInvestingActivities ████▁████-226.069-177.712-259.71-195.333-3564.602-130.995-132.968-133.557-225.532
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▁▆▁█▁▁59.04-64.5585.52421.0311632.00747.0012094.73554.69655.804
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▄▄▄▁▄█▄▄-9.64213.2191.267-24.621-1837.07456.4921970.0230.426-48.684
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:DeferredIncomeTaxExpenseBenefit ▄█▇▆▁▅▄▃▅0.25919.33513.0796.742-18.7011.525-3.032-8.8524.683
us-gaap:DepreciationDepletionAndAmortization ██▇▇▃▂▁▂▁74.17272.94469.94169.89246.24539.93336.6339.4137.656
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅█▆▅▃▅▁▃▄157.387255.481175.453149.68195.521140.4868.25679.287121.044
us-gaap:NetIncomeLoss ▄█▃▃▂▄▃▁▄80.914183.68955.73274.62951.78188.48954.90316.92478.216
us-gaap:ShareBasedCompensation ▅█▄▃▁▂▄▃▂2.3292.7242.1342.021.6881.7732.1281.931.899
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ████▁████-226.069-177.712-259.71-195.333-3564.602-130.995-132.968-133.557-225.532
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▁▆▁█▁▁59.04-64.5585.52421.0311632.00747.0012094.73554.69655.804
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▃▁▁█▄▁▄▁▁675.17685.0118.9992037.48801.184174.0611018.005117.995184.876
us-gaap:RepaymentsOfLongTermDebt ▃▁▁█▁▁▄▁▁573.17246.30520.0541615.79111.50963.309783.66641.976110.57
us-gaap:PaymentsOfDividendsCommonStock ███▇▅▅▄▁▁61.58461.5261.4657.41452.20550.55847.24939.01438.964
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▆▁▁█▁▁▄▁0.0173.2620.0020.0044.3390.0080.0021.8570.001
  2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30

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
Value1241241241241241241111091099090909090909090909090909089898989898989898888717070707069696969696968
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 Assets0.90.90.90.91.01.01.21.21.21.31.31.31.41.41.41.41.41.41.51.51.51.51.61.61.61.61.71.71.71.71.81.81.41.51.51.61.61.61.61.61.71.71.71.8

Shares Outstanding

us-gaap:SharesOutstanding

us-gaap:SharesOutstanding


Shares
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value245220178177177176176176140138137136
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value255254255254255232219178178178178178178177177178177177177177177178177177141141140139139138138138137137136
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
Value254254254254236232219178177177177177177177177177177176177176176177176176140140139139138138138137137136136
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.320.720.410.220.290.220.280.380.250.09-0.020.440.370.290.30.430.340.280.280.410.340.290.160.380.320.270.380.380.310.240.330.360.380.330.480.360.30.270.250.30.270.220.210.320.220.16
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.320.720.410.220.290.20.280.380.250.09-0.020.440.370.290.30.430.340.280.280.410.330.290.160.380.320.270.380.380.310.240.320.360.380.330.470.360.30.270.240.30.270.220.210.320.220.16
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:EmployeeStockOption


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.090.2110.2760.2790.2650.5010.6550.6370.6610.3280.1390.1590.1540.0940.0680.0730.0740.030.00.00.00.00.00.00.00.00.00.00.00.00.030.1250.1220.123
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating26.654.50.0244.7135.210.00.06.67.91726.30.0361.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:EmployeeStockOption0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStock


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.0120.0930.1130.1030.0990.0180.00.00.00.0620.0920.4450.0920.0920.0920.4940.0920.290.3130.7410.3930.3490.3510.711
Percentage of AllocatedShareBasedCompensationExpense13.344.140.936.937.43.60.00.00.00.00.00.00.00.00.00.0306.7232.0256.6602.40.00.00.00.0
Percentage of InterestIncomeOperating3.624.00.090.450.50.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:RestrictedStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value0.7610.6040.5980.550.5540.4860.4190.3950.4120.4250.4060.4930.3550.3510.2680.3110.3220.2810.2980.2990.2960.1680.1880.2090.4150.2630.2950.2950.2950.2360.2010.2140.2210.1780.1660.1670.1720.1290.0990.1020.102
Percentage of AllocatedShareBasedCompensationExpense845.6286.3216.7197.1209.197.064.062.062.3129.6292.1310.1230.5373.4394.1426.0435.1936.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0593.3132.8136.9139.80.00.00.00.0
Percentage of InterestIncomeOperating225.1156.10.0482.5282.79.70.04.14.92236.80.01120.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:RestrictedStockUnitsRSU0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockCompensationPlan


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value0.1750.1750.1750.170.1750.1580.2020.180.160.140.140.150.1310.1310.1310.1310.1120.00.365
Percentage of AllocatedShareBasedCompensationExpense194.482.962.764.234.924.830.654.9100.690.9148.9205.5177.0436.70.00.00.00.00.0
Percentage of InterestIncomeOperating51.845.2153.586.73.51.62.4947.4363.60.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:StockCompensationPlan0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

wtrg:PerformanceShareUnits


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.291.6411.2660.9180.9660.510.3070.5840.8530.997
Percentage of AllocatedShareBasedCompensationExpense1433.3777.7458.7329.0364.5101.846.991.7129.0304.0
Percentage of InterestIncomeOperating381.7424.00.0805.3492.910.10.06.010.15247.4
Percentage of InterestIncomeOperating wtrg:PerformanceShareUnits0.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8018310255745164885416-3.6577866505376614949735951286757486667554357635346665041373440373029442921
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating23939.147464.90.048887.738076.01028.40.0914.1652.289073.70.0177763.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value267351341243261182140137137133142121125125126117118117124128120120122125125119118115115115118116114112115114109107122104105102
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating79202.490752.70.0213521.1133341.33616.40.01416.91638.7703647.40.0276918.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Disposal Group Not Discontinued Operation Gain Loss On Disposal

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal

us-gaap:DisposalGroupNotDiscontinuedOperations


Disposal
Period End2020-09-302019-04-30
Value469000.0403000.0
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal100.0100.0
Percentage of InterestIncomeOperating0.00.0
Percentage of InterestIncomeOperating us-gaap:DisposalGroupNotDiscontinuedOperations0.00.0

us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal us-gaap:StatementGeographical, us-gaap:DisposalGroupClassification

stpr:TX, us-gaap:DisposalGroupNotDiscontinuedOperations


Disposal
Period End2020-09-30
Value469000.0
Percentage of DisposalGroupNotDiscontinuedOperationGainLossOnDisposal100.0
Percentage of InterestIncomeOperating0.0
Percentage of InterestIncomeOperating stpr:TX us-gaap:DisposalGroupNotDiscontinuedOperations0.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value84188855975446386528.754-18.7638266485879665253816554247762535476604670564354664935
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating25059.248696.40.052423.738311.7886.90.0898.1626.446073.70.0186706.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Income
Period End2021-06-302020-06-30
Value-2.83415
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-3.320.8
Percentage of InterestIncomeOperating-838.57959.2
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:NaturalGas0.00.0

us-gaap:OperatingSegments, wtrg:Water


Income
Period End2021-06-302020-06-30
Value8876
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments103.9101.5
Percentage of InterestIncomeOperating26047.938871.9
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:Water0.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Income
Period End2021-06-302020-06-30
Value-0.508-16.698
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-0.6-22.2
Percentage of InterestIncomeOperating-150.3-8519.4
Percentage of InterestIncomeOperating us-gaap:CorporateAndOther0.00.0

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
Value3.7864.766-17.2474.0310.462-7.124-1.123-1.553-2.171-8.17-15.1063.935-0.367-2.1315.0153.45.5692.934.0458.4115.5153.007-4.1359.5844.9194.5945.2878.8915.8495.1923.3245.1887.1357.043-10.4293227171424191221251914
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 InterestIncomeOperating1120.11231.50.03536.0235.7-141.50.0-16.0-25.8-43000.00.08943.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, wtrg:NaturalGas


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value-4.7390.432-1.219-2.399-3.448
Percentage of IncomeTaxExpenseBenefit-125.29.1-30.2-519.348.4
Percentage of InterestIncomeOperating-1402.1111.6-1069.3-1224.0-68.5
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:NaturalGas0.00.00.00.00.0

us-gaap:OperatingSegments, wtrg:Water


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value9.1933.6338.0817.1943.127-2.5611.780.936
Percentage of IncomeTaxExpenseBenefit242.876.2200.51557.1-43.9164.9-82.0-11.5
Percentage of InterestIncomeOperating2719.8938.87088.63670.462.1-26.521.14926.3
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:Water0.00.00.00.00.00.00.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value-0.6680.701-2.831-4.333-6.8031.008-3.951-9.106-0.412-0.22-1.4880.2620.32-0.926-0.616-0.395-0.666-0.299-0.510.2270.0590.066-0.895
Percentage of IncomeTaxExpenseBenefit-17.614.7-70.2-937.995.5-64.9182.0111.5-10.559.969.87.75.7-31.6-7.3-7.2-22.1-3.1-10.44.90.71.1-17.2
Percentage of InterestIncomeOperating-197.6181.1-2483.3-2210.7-135.110.4-46.9-47926.3-936.40.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:CorporateAndOther0.00.00.00.00.010.40.00.0-3169.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value52505149513533322327262523232322212120202019191918181918191919191919191919191919201921181818
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 InterestIncomeOperating15395.313118.60.043737.726360.2697.60.0337.2276.9146578.90.057634.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Income Operating

us-gaap:InterestIncomeOperating

us-gaap:InterestIncomeOperating


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value0.3380.3870.1140.1965.0359.688.4180.0190.044
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8018310255745164885416-3.6577866505376604949735951286757486667554257635346665041373441373028432921
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating23939.147464.90.048887.738076.01028.40.0914.1652.289073.70.0177763.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:BusinessAcquisition

wtrg:PeoplesGasAcquisition


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1351-25.6221813
Percentage of NetIncomeLoss7.349.9-46.024.625.9
Percentage of InterestIncomeOperating3462.00.0-22475.49364.8266.1
Percentage of InterestIncomeOperating wtrg:PeoplesGasAcquisition0.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1.905119-22.3511713
Percentage of NetIncomeLoss2.464.9-40.124.125.9
Percentage of InterestIncomeOperating563.630814.2-19606.19183.2266.1
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:NaturalGas0.00.00.00.00.0

us-gaap:OperatingSegments, wtrg:Water


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value7864856859886952
Percentage of NetIncomeLoss97.434.9153.292.5115.7100.5126.7308.3
Percentage of InterestIncomeOperating23328.116545.274893.935201.51190.3918.3826.6274573.7
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:Water0.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value0.160.408-7.296-12.365-21.551-0.399-14.676-35.245-1.91-1.287-3.1882.0171.339-1.824-1.5110.622-1.157-0.225-0.9290.84
Percentage of NetIncomeLoss0.20.2-13.1-16.6-41.6-0.5-26.7-208.3-2.4-1.9-6.32.62.2-3.7-2.11.0-2.2-0.3-1.61.7
Percentage of InterestIncomeOperating47.3105.4-6400.0-6308.7-428.0-4.1-174.3-185500.0-4340.90.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:CorporateAndOther0.00.00.00.00.0-4.10.00.0-14692.30.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value80183557451885416-3.657786650537660494973595128
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating23939.147464.948887.738076.01028.4914.1652.289073.70.0177763.60.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value1292321321051237385106806762104866976978469719783727495807172957966698780677210088636487746062836650
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 InterestIncomeOperating38262.760039.30.092309.662815.81459.70.01099.9961.6354942.10.0237029.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, wtrg:NaturalGas


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value16136-15.4592411
Percentage of OperatingIncomeLoss12.958.9-14.720.115.9
Percentage of InterestIncomeOperating4935.235365.4-13560.512598.5232.7
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:NaturalGas0.00.00.00.00.0

us-gaap:OperatingSegments, wtrg:Water


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value1088911799861069372
Percentage of OperatingIncomeLoss84.138.5111.781.1117.7100.3115.0108.0
Percentage of InterestIncomeOperating32185.223112.9103114.950915.31718.11103.61106.1383500.0
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:Water0.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Operating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value3.8616.0413.141-1.368-24.724-0.363-12.163-5.4260.6190.082-2.7213.3443.46-1.171-2.7641.475-0.5191.244-0.4032.5432.2752.4980.351
Percentage of OperatingIncomeLoss3.02.63.0-1.1-33.6-0.3-15.0-8.00.60.1-3.93.44.1-1.7-2.81.8-0.71.3-0.53.62.43.10.5
Percentage of InterestIncomeOperating1142.31561.02755.3-698.0-491.0-3.8-144.5-28557.91406.80.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:CorporateAndOther0.00.00.00.00.0-3.80.00.04761.50.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1941000.03471000.0213000.04127000.0722000.0-1679000.0-1398000.0-1494000.0-1912000.0-872000.0-631000.0-325000.0-437000.0-603000.0-1239000.0-1238000.0-1238000.0-1238000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating574.3896.90.03620.2368.4-33.30.0-15.4-22.7-4589.50.0-738.60.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

wtrg:CustomerRateCredits, wtrg:PeoplesGasAcquisition, wtrg:WastewaterUtilitySystemsInVariousStates


Revenue
Period End2020-09-30
Value4.08
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0
Percentage of InterestIncomeOperating3578.9
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits wtrg:PeoplesGasAcquisition wtrg:WastewaterUtilitySystemsInVariousStates0.0

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

wtrg:Commercial, wtrg:NaturalGas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1441267.993113.929
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0195.90.00.0
Percentage of InterestIncomeOperating4393.510599.70.07011.46104.178.0
Percentage of InterestIncomeOperating wtrg:Commercial wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:Commercial, wtrg:Wastewater


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.2684.9954.8764.7944.9424.4513.8224.0373.7973.566
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0117.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating1558.61290.70.04205.32521.488.40.041.745.118768.4
Percentage of InterestIncomeOperating wtrg:Commercial wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:Commercial, wtrg:Water


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value37333541313537423530
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.01021.90.00.00.00.00.00.0
Percentage of InterestIncomeOperating11232.88575.70.036572.815978.6701.10.0443.0417.6159426.3
Percentage of InterestIncomeOperating wtrg:Commercial wtrg:Water0.00.00.00.00.00.00.00.00.00.0

wtrg:CustomerRateCredits, wtrg:Wastewater


Revenue
Period End2020-12-312020-09-30
Value0.0-0.323
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-7.9
Percentage of InterestIncomeOperating0.0-283.3
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits wtrg:Wastewater0.00.0

wtrg:CustomerRateCredits, wtrg:Water


Revenue
Period End2020-12-312020-09-30
Value0.0-3.757
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-92.1
Percentage of InterestIncomeOperating0.0-3295.6
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits wtrg:Water0.00.0

wtrg:FireProtection, wtrg:Water


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8.9199.0458.9038.5358.7698.6468.6868.5658.268.078
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0209.20.00.00.00.00.00.0
Percentage of InterestIncomeOperating2638.82337.20.07486.84474.0171.70.088.598.142515.8
Percentage of InterestIncomeOperating wtrg:FireProtection wtrg:Water0.00.00.00.00.00.00.00.00.00.0

wtrg:GasTransportation, wtrg:NaturalGas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value37775726409.469
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0643.30.00.0
Percentage of InterestIncomeOperating11180.220104.10.023024.620528.1188.1
Percentage of InterestIncomeOperating wtrg:GasTransportation wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:Industrial, wtrg:NaturalGas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.5210.9573.2021.4071.880.433
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.034.50.00.0
Percentage of InterestIncomeOperating154.1247.30.01234.2959.28.6
Percentage of InterestIncomeOperating wtrg:Industrial wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:Industrial, wtrg:Wastewater


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.410.4450.3890.3880.3960.4460.4070.390.4870.481
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.09.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating121.3115.00.0340.4202.08.90.04.05.82531.6
Percentage of InterestIncomeOperating wtrg:Industrial wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:Industrial, wtrg:Water


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.7476.9897.1679.0227.126.9427.6158.737.4566.865
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0221.10.00.00.00.00.00.0
Percentage of InterestIncomeOperating2292.01805.90.07914.03632.7137.90.090.288.636131.6
Percentage of InterestIncomeOperating wtrg:Industrial wtrg:Water0.00.00.00.00.00.00.00.00.00.0

wtrg:OtherUtility, wtrg:NaturalGas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.9719.1797.5715.7635.6841.731
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0141.20.00.0
Percentage of InterestIncomeOperating1766.62371.80.05055.32900.034.4
Percentage of InterestIncomeOperating wtrg:OtherUtility wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:OtherUtility, wtrg:Other


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.4893.826-3.2276.5485.8313.2044.6012.9843.3622.89
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0160.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating1032.2988.60.05743.92975.063.60.030.839.915210.5
Percentage of InterestIncomeOperating wtrg:OtherUtility wtrg:Other0.00.00.00.00.00.00.00.00.00.0

wtrg:OtherWastewater, wtrg:Wastewater


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.5641.751.9361.4621.2630.7241.0780.7581.4231.396
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.035.80.00.00.00.00.00.0
Percentage of InterestIncomeOperating758.6452.20.01282.5644.414.40.07.816.97347.4
Percentage of InterestIncomeOperating wtrg:OtherWastewater wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:OtherWater, wtrg:Water


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12108.9949.5246.6957.1598.1767.3321112
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0233.40.00.00.00.00.00.0
Percentage of InterestIncomeOperating3761.52698.40.08354.43415.8142.20.075.7131.167410.5
Percentage of InterestIncomeOperating wtrg:OtherWater wtrg:Water0.00.00.00.00.00.00.00.00.00.0

wtrg:Residential, wtrg:NaturalGas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value83214158468622
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.01149.80.00.0
Percentage of InterestIncomeOperating24781.155347.30.041151.843975.0454.8
Percentage of InterestIncomeOperating wtrg:Residential wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:Residential, wtrg:Wastewater


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value24242424232221212019
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0592.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating7192.96294.80.021206.112056.6449.10.0221.5240.7104984.2
Percentage of InterestIncomeOperating wtrg:Residential wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:Residential, wtrg:Water


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value144132136157146127131145126114
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.03857.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating42726.334329.70.0138058.874806.62522.60.01504.61503.3600247.4
Percentage of InterestIncomeOperating wtrg:Residential wtrg:Water0.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments

wtrg:CustomerRateCredits, wtrg:NaturalGasUtility


Revenue
Period End2020-12-31
Value23
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of InterestIncomeOperating0.0
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits wtrg:NaturalGasUtility0.0

wtrg:CustomerRateCredits, wtrg:WastewaterUtilitySystemsInVariousStates


Revenue
Period End2020-12-312020-09-30
Value184.08
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0100.0
Percentage of InterestIncomeOperating0.03578.9
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits wtrg:WastewaterUtilitySystemsInVariousStates0.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:CustomerRateCredits, srt:ScenarioForecast, wtrg:PeoplesGasAcquisition


Revenue
Period End2020-12-31
Value23
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of InterestIncomeOperating0.0
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits srt:ScenarioForecast wtrg:PeoplesGasAcquisition0.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:StatementScenario, us-gaap:StatementBusinessSegments

wtrg:CustomerRateCredits, srt:ScenarioForecast, wtrg:NaturalGasUtility


Revenue
Period End2020-12-31
Value18
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of InterestIncomeOperating0.0
Percentage of InterestIncomeOperating wtrg:CustomerRateCredits srt:ScenarioForecast wtrg:NaturalGasUtility0.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

wtrg:NaturalGas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1423432348814538
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.02164.80.00.0
Percentage of InterestIncomeOperating42275.488670.30.077477.274466.3763.9
Percentage of InterestIncomeOperating wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:Other


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.4893.826-3.2276.5485.8313.2044.6012.9843.3622.89
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0160.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating1032.2988.60.05743.92975.063.60.030.839.915210.5
Percentage of InterestIncomeOperating wtrg:Other0.00.00.00.00.00.00.00.00.00.0

wtrg:Wastewater


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value32313130302827262525
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0747.50.00.00.00.00.00.0
Percentage of InterestIncomeOperating9631.48152.70.026750.915424.5560.80.0275.0308.5133631.6
Percentage of InterestIncomeOperating wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:Water


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value211192196222200185193213188172
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.05451.10.00.00.00.00.00.0
Percentage of InterestIncomeOperating62651.549747.00.0195091.2102307.73675.50.02202.02238.8905731.6
Percentage of InterestIncomeOperating wtrg:Water0.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value397583473348384255226243218201205226211194203215203187196226203192197221205190191210195182188204195180187214198170172197188171168193178160
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 InterestIncomeOperating117465.1150792.00.0305830.7196157.15076.20.02516.82600.31058589.50.0513947.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:BusinessAcquisition

wtrg:PeoplesGasAcquisition


Revenuesus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value382409214938
Percentage of Revenues6.650.826.438.915.1
Percentage of InterestIncomeOperating9959.70.080806.176345.4765.5
Percentage of InterestIncomeOperating wtrg:PeoplesGasAcquisition0.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:ProductOrService

srt:ConsolidationEliminations, wtrg:NaturalGas


Revenuesus-gaap:
Period End2020-09-302020-06-30
Value0.5560.854
Percentage of Revenues0.20.2
Percentage of InterestIncomeOperating487.7435.7
Percentage of InterestIncomeOperating srt:ConsolidationEliminations wtrg:NaturalGas0.00.0

srt:ConsolidationEliminations, wtrg:Other


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.9711150.8030.7450.8440.6940.770.8860.912
Percentage of Revenues1.52.03.20.20.20.30.30.30.40.5
Percentage of InterestIncomeOperating1766.33061.20.0704.4380.116.80.08.010.54800.0
Percentage of InterestIncomeOperating srt:ConsolidationEliminations wtrg:Other0.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, wtrg:NaturalGas


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1413438814638
Percentage of Revenues35.758.825.538.215.1
Percentage of InterestIncomeOperating41882.288660.277964.974938.8765.5
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:NaturalGas0.00.00.00.00.0

us-gaap:OperatingSegments, wtrg:Water


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value248228255234216242218200
Percentage of Revenues62.539.173.360.984.699.799.699.5
Percentage of InterestIncomeOperating73425.159005.9224320.2119431.64293.92508.82589.81053789.5
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:Water0.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:MajorCustomers, us-gaap:ProductOrService

wtrg:AlternativeRevenueProgram, wtrg:NaturalGas


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.0050.211-0.030.00.0720.082
Percentage of Revenues-0.00.0-0.00.00.00.0
Percentage of InterestIncomeOperating-1.554.50.00.036.71.6
Percentage of InterestIncomeOperating wtrg:AlternativeRevenueProgram wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:AlternativeRevenueProgram, wtrg:Wastewater


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.050.0460.362-0.143-0.083-0.022-0.0360.162-0.102-0.113
Percentage of Revenues-0.00.00.1-0.0-0.0-0.0-0.00.1-0.0-0.1
Percentage of InterestIncomeOperating-14.811.90.0-125.4-42.3-0.40.01.7-1.2-594.7
Percentage of InterestIncomeOperating wtrg:AlternativeRevenueProgram wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:AlternativeRevenueProgram, wtrg:Water


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4210.4090.368-0.3410.34-0.281-0.137-0.0650.317-0.036
Percentage of Revenues0.10.10.1-0.10.1-0.1-0.1-0.00.1-0.0
Percentage of InterestIncomeOperating124.6105.70.0-299.1173.5-5.60.0-0.73.8-189.5
Percentage of InterestIncomeOperating wtrg:AlternativeRevenueProgram wtrg:Water0.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ProductOrService

wtrg:NaturalGas


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1423432328814638
Percentage of Revenues36.058.849.125.538.215.1
Percentage of InterestIncomeOperating42274.088724.80.077964.974938.8765.5
Percentage of InterestIncomeOperating wtrg:NaturalGas0.00.00.00.00.00.0

wtrg:Other


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9.45915117.3516.5764.0485.2953.7544.2483.802
Percentage of Revenues2.42.72.52.11.71.62.31.51.91.9
Percentage of InterestIncomeOperating2798.54049.90.06448.23355.180.40.038.850.520010.5
Percentage of InterestIncomeOperating wtrg:Other0.00.00.00.00.00.00.00.00.00.0

wtrg:Wastewater


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value32313230302827262525
Percentage of Revenues8.25.46.88.77.811.012.011.011.812.6
Percentage of InterestIncomeOperating9616.68164.60.026625.415382.1560.30.0276.7307.3133036.8
Percentage of InterestIncomeOperating wtrg:Wastewater0.00.00.00.00.00.00.00.00.00.0

wtrg:Water


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value212192197222200184193213188172
Percentage of Revenues53.433.141.663.752.272.385.687.586.285.5
Percentage of InterestIncomeOperating62776.049852.70.0194792.1102481.13669.90.02201.32242.5905542.1
Percentage of InterestIncomeOperating wtrg:Water0.00.00.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value7.293124.0423.5020.8440.770.8860.9120.7761.0360.840.9761.4581.4384.3625.796.6018.0288.8289.7627.2325.6294.473
Percentage of Revenues1.82.11.20.90.30.30.40.50.30.50.40.50.70.81.92.83.43.64.35.13.42.92.4
Percentage of InterestIncomeOperating2157.73125.83545.61786.716.88.010.54800.01763.60.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:CorporateAndOther0.00.00.00.00.08.00.00.05969.20.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value1393313821137051339913028129289361934091807080696467576570640363326545638362356158603659225815574157015600547754065307519150995051507449584865485844874420431943484228419341124072374934863216
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value7435518030632663
Percentage of Assets54.355.344.042.1
Percentage of Assets54.355.344.042.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value559453745303526951565362
Percentage of Assets40.138.938.739.339.641.5
Percentage of Assets40.138.938.739.339.641.5
Percentage of Assets us-gaap:OperatingSegments wtrg:NaturalGas100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, wtrg:Water


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value8158795778387698756373627269
Percentage of Assets58.657.657.257.558.156.977.6
Percentage of Assets58.657.657.257.558.156.977.6
Percentage of Assets us-gaap:OperatingSegments wtrg:Water100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:PublicUtilityRegulatedOrUnregulatedStatus, us-gaap:StatementBusinessSegments

us-gaap:RegulatedOperation, wtrg:NaturalGas


Assetsus-gaap:
Period End2020-12-31
Value5303
Percentage of Assets38.7
Percentage of Assets38.7
Percentage of Assets us-gaap:RegulatedOperation wtrg:NaturalGas100.0

us-gaap:RegulatedOperation, wtrg:Water


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value783872696807
Percentage of Assets57.277.697.8
Percentage of Assets57.277.697.8
Percentage of Assets us-gaap:RegulatedOperation wtrg:Water100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value180490563431307204209221022136159156115858296189238210205182187175176210219219211
Percentage of Assets1.33.54.13.22.41.622.422.523.32.32.21.71.31.31.52.93.73.43.33.03.23.03.13.73.94.03.9
Percentage of Assets1.33.54.13.22.41.622.422.523.32.32.21.71.31.31.52.93.73.43.33.03.23.03.13.73.94.03.9
Percentage of Assets us-gaap:CorporateAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:OtherAndEliminations


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value563209215696
Percentage of Assets4.122.42.21.5
Percentage of Assets4.122.42.21.5
Percentage of Assets wtrg:OtherAndEliminations100.0100.0100.0100.0

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
Value13933138211370513399130281292893619340918070806964675765706403633265456383623561586036592258155741570156005477540653075191509950515074495848654858448744204319434842284193411240723749
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 us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value7435518030632663
Percentage of LiabilitiesAndStockholdersEquity54.355.344.042.1
Percentage of Assets54.355.344.042.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value483648104683463546354613388038623824199220092045200419721957193818961867185018321791176017251728170216761655161515861554153414991428141813851314130212721251121212111192117411081058976
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.734.834.234.635.635.741.541.441.728.128.930.330.530.830.929.629.729.930.030.430.230.330.130.330.430.630.630.430.630.530.429.628.829.228.529.329.529.528.828.728.929.028.829.630.430.4

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4683388020091957
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets34.241.528.930.9
Percentage of Assets srt:ParentCompany63.074.965.673.5

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value339333863379337233663361263626332633827820814811809807804802800797795793790773
Percentage of StockholdersEquity70.270.472.172.772.672.967.968.268.841.540.839.840.541.141.241.542.342.943.143.444.344.944.8
Percentage of Assets24.424.524.725.225.826.028.228.228.711.711.812.012.412.612.712.312.612.812.913.213.413.613.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1241241241241241241111091099090909090909090909090909089
Percentage of StockholdersEquity2.62.62.72.72.72.72.92.82.94.64.54.44.54.64.64.74.84.84.94.95.05.15.2
Percentage of Assets0.90.90.90.91.01.01.21.21.21.31.31.31.41.41.41.41.41.41.51.51.51.51.6
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value14031383126112201226120912101197115911521174121711771147113211151075104810321017978950930
Percentage of StockholdersEquity29.028.826.926.326.526.231.231.030.357.858.459.558.858.257.957.656.756.255.855.554.654.053.9
Percentage of Assets10.110.09.29.19.49.412.912.812.616.316.918.017.917.917.917.016.916.816.816.916.516.316.2
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-84.098-84.333-81.327-81.641-81.954-82.041-77.702-77.702-77.694-77.692-75.835-75.772-75.771-75.771-73.28-73.229-73.206-73.166-71.113-70.99-70.944-70.912-68.085
Percentage of StockholdersEquity-1.7-1.8-1.7-1.8-1.8-1.8-2.0-2.0-2.0-3.9-3.8-3.7-3.8-3.8-3.7-3.8-3.9-3.9-3.8-3.9-4.0-4.0-3.9
Percentage of Assets-0.6-0.6-0.6-0.6-0.6-0.6-0.8-0.8-0.8-1.1-1.1-1.1-1.2-1.2-1.2-1.1-1.1-1.2-1.2-1.2-1.2-1.2-1.2
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value304348380311312368201221782117143147149189124131138138122128141132122128168175164152207201213171211221212260230147243320335178156145121
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 Assets2.22.52.82.32.42.821.523.323.12.02.12.22.91.92.12.12.22.02.12.32.22.12.23.03.13.02.83.93.94.23.44.24.54.45.45.13.35.67.47.94.23.83.63.2

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value399200411858
Percentage of AssetsCurrent105.199.680.844.8
Percentage of Assets2.921.41.70.9
Percentage of Assets srt:ParentCompany5.438.73.92.2

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
Value8.404184.8278.4947.227311868203019744.0533.6274.264523.2024.2044.1397.8114.4253.7633.7124.9233.9813.2294.0714.6159.2744.1384.8433.858175.0586.3934.272195.5216.1225.0475.2038.2047.9886.9177.2595.934131314211414
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 Assets0.10.10.00.10.10.220.021.721.50.10.10.10.80.10.10.10.10.10.10.10.10.10.10.10.10.20.10.10.10.30.10.10.10.40.10.10.10.10.20.20.20.20.10.00.00.00.60.40.5

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value8.404184.8278.4947.227311868203019743.627
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.00.10.10.220.021.721.50.1
Percentage of Assets us-gaap:FairValueInputsLevel10.00.00.00.00.00.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value8.404184.8278.4947.227311868203019744.0533.6274.264523.2024.2044.1397.8114.4253.763
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.00.10.10.220.021.721.50.10.10.10.80.10.10.10.10.10.1

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value129168154126152179677511096101114103919810498899710999919911110995961051008995989889921039977818693798578
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.91.21.10.91.21.40.70.81.21.41.51.71.61.41.61.61.51.41.61.81.71.61.71.92.01.71.82.01.91.81.91.92.01.81.92.32.21.81.92.12.21.92.12.1

us-gaap:AccountsReceivableNetCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.0290.4420.0380.139
Percentage of AccountsReceivableNetCurrent0.00.70.00.1
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Inventory Raw Materials And Supplies

us-gaap:InventoryRawMaterialsAndSupplies

us-gaap:InventoryRawMaterialsAndSupplies


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value27242123222218
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.2

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value293338373432161215242313141212111312121114121111121111
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.30.30.30.20.20.10.20.30.30.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2

us-gaap:PrepaidExpenseAndOtherAssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Prepaid
Period End2020-12-312019-12-312018-12-312017-12-31
Value114.661143.578
Percentage of PrepaidExpenseAndOtherAssetsCurrent28.728.761.428.5
Percentage of Assets0.10.00.20.1
Percentage of Assets srt:ParentCompany0.10.10.50.1

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
Value11977117711162011321110121079582017998788177477648744771917088700368576717659065096386628261836088598558795764570755945500539753875265518451075050495349904714464845284616453244894141
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 Assets86.085.284.884.584.583.587.685.685.8109.4109.8110.2109.5110.7110.6104.8105.2105.7105.7105.8106.1106.3106.0105.0105.0105.2105.6105.4105.9105.8106.7103.8104.6105.0103.9110.4112.9109.1106.9107.1110.1110.2110.2110.4

us-gaap:PropertyPlantAndEquipmentGross us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus

wtrg:Water, us-gaap:RegulatedOperation


Property
Period End2020-12-312019-12-31
Value88258201
Percentage of PropertyPlantAndEquipmentGross76.0100.0
Percentage of Assets64.487.6
Percentage of Assets wtrg:Water us-gaap:RegulatedOperation0.00.0

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
Value2270220121072060196119051856180117661727171817061649162716041580155815331507148414581430139913791356133113051281126612371220117411581136111410891124105610351015106010351020927
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 Assets16.315.915.415.415.114.719.819.319.224.424.725.325.125.425.324.124.424.624.524.624.624.624.424.224.224.324.124.124.424.324.223.223.423.422.924.325.424.523.824.025.325.225.124.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value9707956995129260905088896345619661146020593057405541546053995276515950575001490148234752468846054522443344014313423341594167409040253971393638633865365736123513355534963469321428872688
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets69.769.269.469.169.568.867.866.366.685.085.285.084.385.385.380.680.881.181.281.281.481.781.780.880.880.981.481.381.681.682.580.681.281.681.086.187.484.783.183.184.885.085.285.782.883.6

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value1.7575.9435.4735.9846.2537.4486.846.9596.6897.4747.0046.6717.3796.7866.9957.0268.8597.2387.4677.7164142424344464748454642385.087
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.70.80.80.80.80.90.91.00.90.90.90.80.1

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities

srt:ParentCompany


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value5463269725102213
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures0.045078.636070.133175.0
Percentage of Assets39.928.836.034.9
Percentage of Assets srt:ParentCompany73.552.181.983.1

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-05-012012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value234023402324233323332351635252535253424242424242424142423333333331302727282728282838381.67926264040414043
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.816.917.017.417.918.20.70.60.60.70.80.80.60.70.70.60.70.70.70.70.70.70.60.60.60.60.60.60.50.50.60.50.60.60.60.90.90.00.60.61.01.01.01.01.1

us-gaap:Goodwill us-gaap:BusinessAcquisition

wtrg:PeoplesGasAcquisition


Goodwillus-gaap:
Period End2021-03-312020-12-312020-03-16
Value1622612287
Percentage of Goodwill0.797.30.0
Percentage of Assets0.116.50.0
Percentage of Assets wtrg:PeoplesGasAcquisition0.00.00.0

us-gaap:Goodwill us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value227722772261226722692287
Percentage of Goodwill97.397.397.397.297.397.3
Percentage of Assets16.316.516.516.917.417.7
Percentage of Assets us-gaap:OperatingSegments wtrg:NaturalGas40.742.442.643.044.042.7

us-gaap:OperatingSegments, wtrg:Water


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value58585861595958
Percentage of Goodwill2.52.52.52.62.52.592.4
Percentage of Assets0.40.40.40.50.50.50.6
Percentage of Assets us-gaap:OperatingSegments wtrg:Water0.70.70.70.80.80.80.8

us-gaap:Goodwill us-gaap:PublicUtilityRegulatedOrUnregulatedStatus, us-gaap:StatementBusinessSegments

us-gaap:RegulatedOperation, wtrg:NaturalGas


Goodwillus-gaap:
Period End2020-12-31
Value2261
Percentage of Goodwill97.3
Percentage of Assets16.5
Percentage of Assets us-gaap:RegulatedOperation wtrg:NaturalGas42.6

us-gaap:RegulatedOperation, wtrg:Water


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-31
Value585847
Percentage of Goodwill2.592.490.8
Percentage of Assets0.40.60.7
Percentage of Assets us-gaap:RegulatedOperation wtrg:Water0.70.80.7

us-gaap:Goodwill us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value4.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8414.8215.0776.626.626.626.626.6326.62
Percentage of Goodwill0.20.20.20.20.20.27.69.29.29.19.29.111.511.511.511.511.511.511.511.512.015.619.519.519.519.521.2
Percentage of Assets0.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:CorporateAndOther2.71.00.91.11.62.40.20.20.23.03.14.25.75.95.02.62.02.32.42.62.73.83.73.13.03.03.1

us-gaap:Goodwill us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Goodwillus-gaap:
Period End2020-12-31
Value2287
Percentage of Goodwill98.4
Percentage of Assets16.7
Percentage of Assets wtrg:AmountsPreviouslyRecognized wtrg:PeoplesGasAcquisition0.0

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Goodwillus-gaap:
Period End2020-12-31
Value-26.63
Percentage of Goodwill-1.1
Percentage of Assets-0.2
Percentage of Assets wtrg:MeasurementPeriodAdjustments wtrg:PeoplesGasAcquisition0.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-30
Value6732000.06986000.07241000.07829000.0
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0
Percentage of Assets0.00.10.10.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value57586362636512121313
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.50.50.50.50.10.10.10.2

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
Value1311211771581241157457575577564240596346505944403356454734634838316541463155454233683842294557
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 Assets0.90.91.31.21.00.90.80.60.60.81.10.80.60.60.91.00.70.81.00.70.70.61.00.80.80.61.20.90.70.61.30.80.90.61.11.01.00.81.60.91.00.71.11.5

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value153837283041221717222219172223211824251819212127253131118.911131520162228322022161410151618
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.30.30.20.20.30.20.20.20.30.30.30.30.40.40.30.30.40.40.30.30.40.40.50.50.60.60.20.20.30.30.40.30.50.60.70.50.50.40.40.30.40.40.5

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value108108123120100904945434047423734413839354039373949474238413231303427262627252620232327232721
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.90.90.80.70.50.50.50.60.70.60.60.50.60.60.60.60.70.70.60.70.90.80.80.70.80.60.60.60.70.50.50.50.60.60.60.50.50.50.60.60.70.6

us-gaap:AccruedLiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Accrued
Period End2020-12-312019-12-312018-12-312017-12-31
Value1610119.329
Percentage of AccruedLiabilitiesCurrent13.221.424.422.7
Percentage of Assets0.10.10.20.1
Percentage of Assets srt:ParentCompany0.20.20.40.4

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value469503603666448827318352398434398288253259284252332277301251179174193216203205225235277251266318306301274315212324425428306209223201
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 Assets3.43.64.45.03.46.43.43.84.36.15.74.33.94.04.53.95.24.54.94.23.03.03.43.83.63.74.24.45.44.95.36.36.26.25.67.04.87.59.810.17.35.15.55.4

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value1088816477
Percentage of LiabilitiesCurrent18.027.941.227.4
Percentage of Assets0.80.92.41.2
Percentage of Assets srt:ParentCompany1.51.75.42.9

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value7980842058711510517822115614410811810311384143119150833829354738475886118978681468345404439809590282859
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.61.50.70.91.11.92.42.22.11.61.81.61.81.32.21.92.41.40.60.50.60.80.70.91.11.62.31.91.71.60.91.70.90.91.00.91.82.32.20.70.71.6

us-gaap:LongTermDebtCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value40385030
Percentage of LongTermDebtCurrent47.537.034.627.1
Percentage of Assets0.30.40.70.5
Percentage of Assets srt:ParentCompany0.50.71.61.2

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312019-12-31
Value7666000.01222000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0
Percentage of Assets0.10.0

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3014188716041462124711851089109211151115106610691070110110521051100410039921019102410431056106110581060989
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.020.223.023.120.320.619.119.520.420.620.120.621.021.820.721.220.620.722.123.123.724.025.025.325.726.026.4

us-gaap:LongTermDebt us-gaap:DebtInstrument

wtrg:Notes


Long
Period End2020-09-30
Value6.709
Percentage of LongTermDebt0.0
Percentage of Assets0.1
Percentage of Assets wtrg:Notes0.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value56485547550751525174472929432898274924622398226621812063200719521822179717371726177517441743168116601594156015601481149814681439148914641543151915691437139514021468153015311386
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 Assets40.540.140.238.539.736.631.431.029.934.834.433.533.232.231.729.828.628.828.228.630.030.030.429.529.729.128.929.428.529.429.128.430.030.131.833.935.533.332.133.235.037.237.637.0

us-gaap:LongTermDebtNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value25231081758497
Percentage of LongTermDebtNoncurrent45.836.731.624.8
Percentage of Assets18.411.610.97.9
Percentage of Assets srt:ParentCompany33.920.924.718.7

Deferred Finance Costs Noncurrent Net

us-gaap:DeferredFinanceCostsNoncurrentNet

us-gaap:DeferredFinanceCostsNoncurrentNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value4137383838282935292020202121212121222222222223
Percentage of DeferredFinanceCostsNoncurrentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.20.30.40.30.30.30.30.30.30.30.30.30.40.40.40.40.40.4

Long Term Debt And Capital Lease Obligations

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligations


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value5630307725632143191017791728169916421619164715991595155415201536154715881560161314991516153815591558156014461217
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets41.132.936.833.831.031.030.330.330.029.931.030.831.330.830.031.031.832.734.836.534.734.936.437.237.938.338.634.9

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value134913101258123812151192936845
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.79.59.29.29.39.210.012.1

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3625242823
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.40.4
Percentage of Assets us-gaap:OtherPostretirementBenefitPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5843425065
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent159.4170.4177.7178.1280.7
Percentage of Assets0.40.50.60.81.1
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value50465648504810210097969710110410710711010511011510710911010098941061097168758115215115515712311911912287107112116114
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.30.40.40.40.41.11.11.11.41.41.51.61.71.71.71.61.81.91.81.81.91.81.71.71.92.01.31.31.51.63.03.03.23.32.72.72.82.82.12.62.72.93.1

us-gaap:OtherLiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value119129131130
Percentage of OtherLiabilitiesNoncurrent210.3126.5135.4121.4
Percentage of Assets0.91.41.92.1
Percentage of Assets srt:ParentCompany1.62.54.34.9

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value515355575960111111
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.50.50.10.10.1

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312019-03-312018-12-31
Value111.5741.682
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312019-03-312018-12-31
Value111.3511.443
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312019-03-312018-12-31
Value111.1231.221
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312019-03-312018-12-31
Value110.7490.848
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0
Percentage of Assets0.10.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312019-03-312018-12-31
Value341516
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0
Percentage of Assets0.20.20.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value6312121313
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.50.10.10.10.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value902121212123
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.20.20.20.30.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value27
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value483648104683463546354613388038623824199220092045200419721957193818961867185018321791176017251728170216761655161515861554153414991428141813851314130212721251121212111192117411081058976
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.734.834.234.635.635.741.541.441.728.128.930.330.530.830.929.629.729.930.030.430.230.330.130.330.430.630.630.430.630.530.429.628.829.228.529.329.529.528.828.728.929.028.829.630.430.4

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4683388020091957
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets34.241.528.930.9
Percentage of Assets srt:ParentCompany63.074.965.673.5

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value339333863379337233663361263626332633827820814811809807804802800797795793790773
Percentage of StockholdersEquity70.270.472.172.772.672.967.968.268.841.540.839.840.541.141.241.542.342.943.143.444.344.944.8
Percentage of Assets24.424.524.725.225.826.028.228.228.711.711.812.012.412.612.712.312.612.812.913.213.413.613.5
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1241241241241241241111091099090909090909090909090909089
Percentage of StockholdersEquity2.62.62.72.72.72.72.92.82.94.64.54.44.54.64.64.74.84.84.94.95.05.15.2
Percentage of Assets0.90.90.90.91.01.01.21.21.21.31.31.31.41.41.41.41.41.41.51.51.51.51.6
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value14031383126112201226120912101197115911521174121711771147113211151075104810321017978950930
Percentage of StockholdersEquity29.028.826.926.326.526.231.231.030.357.858.459.558.858.257.957.656.756.255.855.554.654.053.9
Percentage of Assets10.110.09.29.19.49.412.912.812.616.316.918.017.917.917.917.016.916.816.816.916.516.316.2
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-84.098-84.333-81.327-81.641-81.954-82.041-77.702-77.702-77.694-77.692-75.835-75.772-75.771-75.771-73.28-73.229-73.206-73.166-71.113-70.99-70.944-70.912-68.085
Percentage of StockholdersEquity-1.7-1.8-1.7-1.8-1.8-1.8-2.0-2.0-2.0-3.9-3.8-3.7-3.8-3.8-3.7-3.8-3.9-3.9-3.8-3.9-4.0-4.0-3.9
Percentage of Assets-0.6-0.6-0.6-0.6-0.6-0.6-0.8-0.8-0.8-1.1-1.1-1.1-1.2-1.2-1.2-1.1-1.1-1.2-1.2-1.2-1.2-1.2-1.2
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value4683388020091957185017251728170216761655161515861554153515001428141813851314130212731251121212121192117411091060978
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.241.528.930.930.030.130.330.430.630.630.430.630.530.429.628.829.228.529.329.529.528.828.728.929.028.829.630.430.4

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value33792636820807797773768758743718686664642
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest72.167.940.841.243.144.844.545.848.451.854.856.657.9
Percentage of Assets24.728.211.812.712.913.513.514.014.714.815.816.317.1
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value124111909090898989898989898988887170707070696969696969686867
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest2.72.94.54.64.95.25.25.35.35.45.55.65.75.85.95.05.05.15.35.45.55.65.75.75.85.96.26.46.9
Percentage of Assets0.91.21.31.41.51.61.61.61.61.71.71.71.71.81.81.41.51.51.61.61.61.61.61.71.71.71.82.02.1
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value12611210117411321032930933897869849812773745729698635633611544541523508474477461452409379350
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest26.931.258.457.955.853.954.052.751.951.350.348.847.947.546.644.544.644.141.441.641.140.639.139.438.738.536.935.835.8
Percentage of Assets9.212.916.917.916.816.216.416.015.915.715.314.914.614.413.812.813.012.612.112.312.111.711.211.411.211.110.910.910.9
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value-81.327-77.702-75.835-73.28-71.113-68.085-63.106-50.795-46.592-42.838-41.055-29.431-29.055-27.082-27.074-26.124-16.159-14.668-14.446-14.248-13.828-13.145-12.983-12.98-12.875-12.307-12.138-12.751-13.166
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.7-2.0-3.8-3.7-3.8-3.9-3.7-3.0-2.8-2.6-2.5-1.9-1.9-1.8-1.8-1.8-1.1-1.1-1.1-1.1-1.1-1.1-1.1-1.1-1.1-1.0-1.1-1.2-1.3
Percentage of Assets-0.6-0.8-1.1-1.2-1.2-1.2-1.1-0.9-0.9-0.8-0.8-0.6-0.6-0.5-0.5-0.5-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.3-0.4-0.4
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value1241241241241241241111091099090909090909090909090909089898989898989898888717070707069696969696968
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 Assets0.90.90.90.91.01.01.21.21.21.31.31.31.41.41.41.41.41.41.51.51.51.51.61.61.61.61.71.71.71.71.81.81.41.51.51.61.61.61.61.61.71.71.71.8

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value339333863379337233663361263626332633827820814811809807804802800797795793790773768766763758753751748743739747730718713704693686681676673664642
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.424.524.725.225.826.028.228.228.711.711.812.012.412.612.712.312.612.812.913.213.413.613.513.513.713.914.014.214.514.714.714.615.115.014.815.915.916.115.816.116.116.416.317.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value14031383126112201226120912101197115911521174121711771147113211151075104810321017978950930933897869849812773745729698635633611544541523508474477461452409
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 Assets10.110.09.29.19.49.412.912.812.616.316.918.017.917.917.917.016.916.816.816.916.516.316.216.416.015.915.715.314.914.614.413.812.813.012.612.112.312.111.711.211.411.211.110.9

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

wtrg:AquaPennsylvanias


Retained
Period End2020-12-312019-12-31
Value17491611
Percentage of RetainedEarningsAccumulatedDeficit138.6133.2
Percentage of Assets12.817.2
Percentage of Assets wtrg:AquaPennsylvanias0.00.0

wtrg:OtherSubsidiaries


Retained
Period End2020-12-312019-12-31
Value276270
Percentage of RetainedEarningsAccumulatedDeficit21.922.3
Percentage of Assets2.02.9
Percentage of Assets wtrg:OtherSubsidiaries0.00.0

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity, us-gaap:StatementScenario

wtrg:OtherSubsidiaries, wtrg:RestrictionFree


Retained
Period End2020-12-31
Value342
Percentage of RetainedEarningsAccumulatedDeficit27.2
Percentage of Assets2.5
Percentage of Assets wtrg:OtherSubsidiaries wtrg:RestrictionFree0.0

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
Value8484818181827777777775757575737373737170707068635046424129292727261614141413131212121212
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 Assets0.60.60.60.60.60.60.80.80.81.11.11.11.21.21.21.11.11.21.21.21.21.21.21.10.90.90.80.80.60.60.50.50.50.30.30.30.30.30.30.30.30.30.30.3

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value15725587175149951101408.256797712181889912476818812566908912064898812070881021206777119111617475893564
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating46564.266015.80.0153906.176367.91897.10.01451.398.1417300.00.0275100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-226.069-177.712-314.021-259.71-195.333-3564.602-207.083-130.995-132.968-133.557-197.725-225.532-111.331-105.227-139.385-127.72-118.965-94.314-109.79-107.095-105.189-71.988-60.907-95.441-72.37-63.783-47.067-70.536-80.867-23.093-96.041-95.555-121.649-51.43-100.775-51.831-80.949-51.349-185.182-58.867-76.209-63.944
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-66884.3-45920.40.0-227815.8-99659.7-70796.50.0-1353.3-1579.6-702931.60.0-512572.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value59-64.5522285211632-65.0574720945411955791540-0.752461320-18.81333-12.896-29.153-23.949-5.409-13.696-42.489-47.534-4.635-52.061-6.753-24.24254-29.504-18.753-58.25718-21.417102-29.92839-7.221
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating17467.5-16679.60.075021.110730.132413.20.0485.524884.0287873.70.0126827.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-9.64213-3.6671.267-24.621-1837.074-161.6465619700.426-0.637-48.68449-1.0020.065-3.6723.3860.662
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-2852.73415.80.01111.4-12561.7-36486.10.0583.623402.52242.10.0-110645.50.00.00.00.00.00.0

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
Value0.25919-18.902136.742-18.701-0.0771.525-3.032-8.852-15.0314.683-1.753-2.8494.0063.4753.6182.6811.905103.6151.4362.6518.4632.7042.688167.214.1533.6926.8472.1716.492111820326.9821525122039302.7041.791
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

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
Value74727069694640393639363736363434333433343232323231313230313231313030302730282725292934273029
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

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value15725587175149951101408.256797712181889912476818812566908912064898812070881021206777119111617475893564
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating46564.266015.80.0153906.176367.91897.10.01451.398.1417300.00.0275100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8018310255745164885416-3.6577866505376604949735951286757486667554257635346665041373441373028432921
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating23939.147464.90.048887.738076.01028.40.0914.1652.289073.70.0177763.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:BusinessAcquisition

wtrg:PeoplesGasAcquisition


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value1351-25.6221813
Percentage of NetIncomeLoss7.349.9-46.024.625.9
Percentage of InterestIncomeOperating3462.00.0-22475.49364.8266.1
Percentage of InterestIncomeOperating wtrg:PeoplesGasAcquisition0.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value1.905119-22.3511713
Percentage of NetIncomeLoss2.464.9-40.124.125.9
Percentage of InterestIncomeOperating563.630814.2-19606.19183.2266.1
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:NaturalGas0.00.00.00.00.0

us-gaap:OperatingSegments, wtrg:Water


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value7864856859886952
Percentage of NetIncomeLoss97.434.9153.292.5115.7100.5126.7308.3
Percentage of InterestIncomeOperating23328.116545.274893.935201.51190.3918.3826.6274573.7
Percentage of InterestIncomeOperating us-gaap:OperatingSegments wtrg:Water0.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value0.160.408-7.296-12.365-21.551-0.399-14.676-35.245-1.91-1.287-3.1882.0171.339-1.824-1.5110.622-1.157-0.225-0.9290.84
Percentage of NetIncomeLoss0.20.2-13.1-16.6-41.6-0.5-26.7-208.3-2.4-1.9-6.32.62.2-3.7-2.11.0-2.2-0.3-1.61.7
Percentage of InterestIncomeOperating47.3105.4-6400.0-6308.7-428.0-4.1-174.3-185500.0-4340.90.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:CorporateAndOther0.00.00.00.00.0-4.10.00.0-14692.30.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value80183557451885416-3.657786650537660494973595128
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating23939.147464.948887.738076.01028.4914.1652.289073.70.0177763.60.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2329000.02724000.02318000.02134000.02020000.01688000.01537000.01773000.02128000.01930000.02236000.01899000.01988000.01444000.01963000.01569000.01498000.01312000.01748000.01442000.01394000.0806000.01132000.01046000.02341000.01341000.01674000.01607000.02207000.01331000.01023000.01349000.01679000.01015000.01530000.01153000.01647000.01220000.01083000.01041000.0757000.0970000.01016000.0856000.01213000.0946000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-226.069-177.712-314.021-259.71-195.333-3564.602-207.083-130.995-132.968-133.557-197.725-225.532-111.331-105.227-139.385-127.72-118.965-94.314-109.79-107.095-105.189-71.988-60.907-95.441-72.37-63.783-47.067-70.536-80.867-23.093-96.041-95.555-121.649-51.43-100.775-51.831-80.949-51.349-185.182-58.867-76.209-63.944
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating-66884.3-45920.40.0-227815.8-99659.7-70796.50.0-1353.3-1579.6-702931.60.0-512572.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value59-64.5522285211632-65.0574720945411955791540-0.752461320-18.81333-12.896-29.153-23.949-5.409-13.696-42.489-47.534-4.635-52.061-6.753-24.24254-29.504-18.753-58.25718-21.417102-29.92839-7.221
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestIncomeOperating17467.5-16679.60.075021.110730.132413.20.0485.524884.0287873.70.0126827.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value67585409118203780112417410181179281841516614921810411726964729624774185529610442737516137351201113928272.681220.0158126931
Percentage of ProceedsFromIssuanceOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-05-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5734617320161511159633137834176211019216514755891916832801964512929124573931423114877926416284922211.89163462.01648
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

wtrg:AquaPennsylvaniaInc, us-gaap:RevolvingCreditFacility


Repayments
Period End2021-04-19
Value50
Percentage of RepaymentsOfLongTermDebt0.0

us-gaap:RepaymentsOfLongTermDebt dei:LegalEntity, us-gaap:CreditFacility, us-gaap:SubsequentEventType

wtrg:AquaPennsylvaniaInc, us-gaap:RevolvingCreditFacility, us-gaap:SubsequentEvent


Repayments
Period End2021-04-19
Value50
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
Value61616161575251504739383836363636333333333131313129292929262626262424242322222221212121191919
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

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


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
Value0.0173.2620.020.0020.0044.3390.00.0080.0021.8570.0630.0010.02.4910.0510.0230.042.0530.1230.0460.0322.8274.979124.2033.7541.783110.3761.9730.0081.105101.6180.00.3320.4490.6830.1620.0030.2640.7340.0260.2170.1830.344
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4.52.5-5.76.70.006-0.167.938-1.5-0.056-0.934-0.0840.048-0.006-0.0440.0060.0430.0840.056-0.0020.1030.0850.055-0.030.1240.0790.086-0.0030.1160.0960.109-0.0090.0760.1180.146-0.1280.3930.3950.394
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectiveIncomeTaxRateContinuingOperations us-gaap:IncomeTaxAuthority

us-gaap:StateAndLocalJurisdiction


Effective
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2.52.47500.0259.890100.0999
Percentage of EffectiveIncomeTaxRateContinuingOperations100.036.90.0-15.6-659.3-0.0-10.7

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

us-gaap:EmployeeStockOption


Share
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value947680.0966320.0976130.01033800.01047300.01074900.01112200.0422970.0451560.0458100.0460690.0364930.0384590.0403050.0458360.0427340.0452080.0467660.0512720.0659530.0817630.0879580.0914720.01085000.01213600.01224400.01346700.01538100.01586400.01470100.02497300.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value35.2235.2135.2235.235.235.234.234.033.8933.625.9725.7625.3725.419.8319.7319.6219.0615.5515.6415.6915.7816.6217.117.1217.1217.0617.2517.2517.1316.8216.7921.1420.81
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value125893684576912691118973827880671525
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2989310911514916619619219410768
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value19181717171718181817282828282828282826252525300.028290.00.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0

us-gaap:UnrecognizedTaxBenefits us-gaap:IncomeTaxAuthority

us-gaap:InternalRevenueServiceIRS


Unrecognized
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value747368686969656464646463636264636362615756566562
Percentage of UnrecognizedTaxBenefits388.6392.9396.5392.8389.9388.1343.3341.9357.2366.7223.7223.5223.4223.3224.2224.6224.4224.8231.3228.2224.5221.4218.4216.9

us-gaap:StateAndLocalJurisdiction


Unrecognized
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value858585858585858585858585858589898988838383838586
Percentage of UnrecognizedTaxBenefits445.9458.7492.7487.7483.1481.5451.0450.6470.6485.6295.5299.4301.2302.7311.0315.3316.4317.3312.6331.5330.0330.3283.5299.8

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


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
Value342218119.486106.5786.4317.5069.3319.601
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-3.044-3.3053132-366.886174153.924-26.48717-6.2421-20.34216-17.34-46.4663921-41.45521-1.80211-11.309-8.2763.2441411-33.36512-8.827-73.046-2.3011417-17.26737-52.7224.6434.793-15.906262.3262018-13.03536
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentForAmortization

us-gaap:AdjustmentForAmortization


Adjustment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.4081.3071.2041.7661.9670.6790.4370.444-2.920.3360.1630.1990.1490.130.0640.0420.1270.1890.6540.3890.5280.450.8580.8160.9240.8490.7960.8060.7461.1331.6321.1751.3581.371.4561.321.541.2150.9361.0741.9311.9563.7623.313.3143.172
Percentage of AdjustmentForAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value104000.0225000.0-438000.054000.0-6000.0-939000.0-212000.0-13000.0-108000.0-209000.0-206000.0-197000.0-204000.0-243000.0-198000.0-206000.0-202000.0-207000.0-194000.0-208000.0-198000.0-200000.0-232000.0-263000.0-213000.0-218000.0-181000.0-181000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalOther us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-148000.0-31000.0-753000.0-37000.0-6000.0-939000.0-212000.0-13000.0-108000.0-209000.0-206000.0-197000.0-204000.0-243000.0-198000.0-206000.0-202000.0-207000.0-194000.0-208000.0-198000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther-142.3-13.8171.9-68.5100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-30
Value252000.0256000.0315000.091000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalOther242.3113.8-71.9168.5

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

wtrg:PeoplesGasAcquisition


Business
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1371025574137120755468
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaRevenue

wtrg:PeoplesGasAcquisition


Business
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value536473348384536506341351598
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

wtrg:WastewaterUtilitySystemsInVariousStates


Business
Period End2020-10-312020-09-30
Value4.85953
Percentage of BusinessCombinationConsiderationTransferred1100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

wtrg:WastewaterUtilitySystemsInVariousStates, us-gaap:SubsequentEvent


Business
Period End2020-10-31
Value4.815
Percentage of BusinessCombinationConsiderationTransferred199.1

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

stpr:IL, wtrg:WastewaterUtilitySystem


Business
Period End2020-12-31
Value32
Percentage of BusinessCombinationConsiderationTransferred10.0

stpr:IL, wtrg:WastewaterUtilitySystemsInVariousStates


Business
Period End2021-04-302020-10-31
Value124.859
Percentage of BusinessCombinationConsiderationTransferred10.0100.0

stpr:PA, wtrg:WastewaterUtilitySystem


Business
Period End2021-01-312020-12-312020-06-302019-11-302018-11-30
Value7229212921
Percentage of BusinessCombinationConsiderationTransferred10.00.00.00.00.0

stpr:PA, wtrg:WastewaterUtilitySystemsInVariousStates


Business
Period End2020-09-30
Value53
Percentage of BusinessCombinationConsiderationTransferred1100.0

stpr:TX, wtrg:WaterUtilitySystem


Business
Period End2020-07-31
Value4.0
Percentage of BusinessCombinationConsiderationTransferred10.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:StatementGeographical, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stpr:PA, wtrg:WaterUtilitySystem, us-gaap:SubsequentEvent


Business
Period End2021-07-31
Value12
Percentage of BusinessCombinationConsiderationTransferred10.0

stpr:TX, wtrg:WaterUtilitySystem, us-gaap:SubsequentEvent


Business
Period End2021-08-06
Value4.0
Percentage of BusinessCombinationConsiderationTransferred10.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.738731.58718225519-3.752.2154223162.38123102.3755.68627112.6851.811190.87-2.8097.393202.1068.5771.80618
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-108000.0-108000.0-116000.0-116000.0-116000.0-116000.0-116000.0-116000.0-116000.0-116000.0-128000.0-127000.0-127000.0-127000.0-128000.0-127000.0-127000.0-127000.0-138000.0-137000.0-137000.0-137000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value140000.0140000.0147000.0148000.0148000.0148000.0155000.0155000.0155000.0155000.0131000.0132000.0132000.0132000.0144000.0145000.0145000.0145000.0143000.0145000.0145000.0145000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit-129.6-129.6-126.7-127.6-127.6-127.6-133.6-133.6-133.6-133.6-102.3-103.9-103.9-103.9-112.5-114.2-114.2-114.2-103.6-105.8-105.8-105.8

us-gaap:DefinedBenefitPlanContributionsByEmployer us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanContributionsByEmployer

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-31
Value6.3326.332-0.003
Percentage of DefinedBenefitPlanContributionsByEmployer100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

wtrg:PeoplesGasAcquisition, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-03-312020-09-302020-06-302020-03-31
Value0.3490.4360.4320.076
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0

wtrg:PeoplesGasAcquisition, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-31
Value1.7381.7190.302
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets398.6397.9397.4

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.0390.692.0540.6750.6750.6750.6190.6210.6210.6210.6750.6770.6770.6770.6480.6470.6470.6470.6460.6450.6450.711
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets0.0197.70.0154.8156.2888.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5.7915.9079.4353.9383.9383.9383.8183.8183.8183.8184.5524.5534.5534.5534.2674.274.274.274.2144.2154.2154.266
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets0.01692.60.0903.2911.65181.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

wtrg:PeoplesGasAcquisition, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-03-312020-09-302020-06-302020-03-31
Value0.2780.3120.3090.054
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0

wtrg:PeoplesGasAcquisition, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-31
Value1.1021.090.192
Percentage of DefinedBenefitPlanInterestCost353.2352.8355.6

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.8390.5611.6560.6770.6770.6770.7490.750.750.750.7070.7080.7080.7080.7360.7370.7370.7370.7250.7260.7260.75
Percentage of DefinedBenefitPlanInterestCost0.0201.80.0217.0219.11253.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.2553.0616.092.542.542.542.9552.9542.9542.9542.8732.8742.8742.8743.113.1083.1083.1083.2513.2513.2513.285
Percentage of DefinedBenefitPlanInterestCost0.01101.10.0814.1822.04703.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

wtrg:PeoplesGasAcquisition, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-03-312020-09-302020-06-302020-03-31
Value0.3850.3210.3180.055
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0

wtrg:PeoplesGasAcquisition, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-31
Value-0.407-0.403-0.07
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-126.8-126.7-127.3

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.4460.0611.2650.2590.2590.2590.3840.3840.3840.3840.4610.4620.4620.4620.5070.5090.5090.5090.4130.4170.4170.424
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.015.80.080.781.4470.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.793-0.5570.2791.5051.5051.5051.9511.9531.9531.9537.0181.0881.0881.0881.7791.7781.7781.7781.6311.7621.7625.08
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost0.0-144.70.0468.8473.32736.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

wtrg:PeoplesGasAcquisition, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-03-312020-09-302020-06-302020-03-31
Value496000.0445000.0441000.077000.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0

wtrg:PeoplesGasAcquisition, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-09-302020-06-302020-03-31
Value229000.0226000.040000.0
Percentage of DefinedBenefitPlanServiceCost51.551.251.9

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value699000.0203000.01625000.0217000.0217000.0217000.0204000.0205000.0205000.0205000.0263000.0262000.0262000.0262000.0255000.0255000.0255000.0255000.0253000.0253000.0253000.0255000.0
Percentage of DefinedBenefitPlanServiceCost0.040.90.048.849.2281.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value876000.01078000.01486000.0763000.0763000.0763000.0678000.0680000.0680000.0680000.0813000.0812000.0812000.0812000.0792000.0794000.0794000.0794000.0785000.0784000.0784000.0826000.0
Percentage of DefinedBenefitPlanServiceCost0.0217.30.0171.5173.0990.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Depreciation

us-gaap:Depreciation


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
Value72716968674540393939353736353434333333333132313131303129313030302929292828272627272730262626
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value7472696946393639
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value282725254.569
Percentage of DepreciationAndAmortization37.937.836.936.89.9

us-gaap:OperatingSegments, wtrg:Water


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4545424241393639
Percentage of DepreciationAndAmortization61.461.961.461.289.899.699.499.6

us-gaap:DepreciationAndAmortization us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Depreciation
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value0.5050.2161.1931.4170.1650.1520.2180.149
Percentage of DepreciationAndAmortization0.70.31.72.00.40.40.60.4

us-gaap:DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:DisposalGroupClassification

us-gaap:DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax

wtrg:JointVenture, us-gaap:DisposalGroupNotDiscontinuedOperations


Discontinued
Period End2020-10-31
Value3.7
Percentage of DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-06-302012-03-312011-12-31
Value6161615752504739383836363636333333333131313129292929262626222264
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-06-302012-03-312011-12-31
Value6161615752504739383836363636333333333131313129292929262626222264
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeStockOption


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value26000.060000.078000.079000.075000.0142000.0185000.0180000.0186000.092000.039000.045000.042000.058000.041000.043000.033000.092000.011000.015000.018000.0216000.050000.028000.011000.0104000.091000.02000.023000.073000.028000.0110000.085000.0238000.088000.0220000.0141000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStock


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value4000.027000.032000.030000.029000.05000.026000.038000.0185000.038000.039000.038000.0205000.038000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense15.445.041.038.038.73.528.61900.0804.352.1139.334.5241.216.0

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value212000.0169000.0147000.0148000.0154000.0136000.0118000.0112000.0116000.0120000.0115000.0140000.0100000.0100000.0111000.0129000.0133000.0116000.0123000.0124000.0122000.069000.077000.086000.0172000.0109000.0122000.0122000.0122000.098000.084000.088000.090000.073000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense815.4281.7188.5187.3205.395.863.862.262.4130.4294.9311.1238.1172.4270.7300.0403.0126.11118.2826.7677.831.9154.0307.11563.6104.8134.16100.0530.4134.2300.080.0105.930.7

us-gaap:StockCompensationPlan


Employee
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-30
Value51000.051000.050000.049000.051000.046000.058000.052000.046000.041000.040000.062000.054000.054000.054000.054000.047000.00151000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense196.285.063.365.335.925.631.256.5102.297.669.0144.2163.658.7360.0300.021.80.01372.7

wtrg:PerformanceShareUnits


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value364000.0462000.0297000.0252000.0265000.0144000.085000.0166000.0239000.0227000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense1400.0770.0380.8319.0353.3101.445.992.2128.5246.7

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value251000.0248000.0248000.0305000.0-7000.0-54000.098000.02000.060000.0133000.0-155000.062000.019000.021000.0
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value251000.0248000.0248000.0305000.0-7000.0-54000.098000.02000.060000.0133000.0-155000.062000.019000.021000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfBusiness

us-gaap:GainLossOnSaleOfBusiness


Gain
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312013-12-312013-09-30
Value717000.091000.0-144000.020000.0105000.02000.00-450000.00-46000.0-278000.0-1080000.042000.0567000.01215000.000
Percentage of GainLossOnSaleOfBusiness100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:GainLossOnSaleOfOtherAssets

us-gaap:GainLossOnSaleOfOtherAssets


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value223000.080000.0303000.0233000.020000.0105000.0480000.0175000.048000.0220000.0116000.0261000.0141000.0196000.0162000.043000.010000.0269000.0-12000.062000.0121000.0207000.0130000.0170000.0-1000.0169000.0129000.075000.0140000.0-348000.027000.0138000.0-109000.092000.0264000.0320000.064000.0442000.0174000.0216000.0138000.0121000.0289000.0291000.0110000.01929000.0
Percentage of GainLossOnSaleOfOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillPeriodIncreaseDecrease us-gaap:BusinessAcquisition

us-gaap:GoodwillPeriodIncreaseDecrease

wtrg:PeoplesGasAcquisition


Goodwill
Period End2020-09-30
Value-2127000.0
Percentage of GoodwillPeriodIncreaseDecrease100.0

us-gaap:GoodwillPurchaseAccountingAdjustments

us-gaap:GoodwillPurchaseAccountingAdjustments


Goodwill
Period End2021-06-302021-03-31
Value0.016
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0

us-gaap:GoodwillPurchaseAccountingAdjustments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Goodwill
Period End2021-06-302021-03-31
Value0.016
Percentage of GoodwillPurchaseAccountingAdjustments0.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-3.6260.47-0.1270.1351.240.5430.2150.9110.382
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Income
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-3.6260.47-0.1270.1351.240.5430.2150.9110.382
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationOtherAdjustments

us-gaap:IncomeTaxReconciliationOtherAdjustments


Income
Period End2020-12-312020-09-302020-06-30
Value-2.474-6.466-5.238
Percentage of IncomeTaxReconciliationOtherAdjustments100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-24.831-53.756-14.2551-31.488-7.531-8.216132.744-3.402-3.76310-5.169-0.996-4.46814-6.45-4.5194.9972.454-7.5754.88-19.91914-9.14111-15.77111-8.52913-15.22313-11.2460.584-12.25520-6.219110.4721.3193.68-4.676-0.547-10.038-17.5710
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.0212.183-0.507-4.090.1482.945-4.406-1.448-0.2180.404-2.1382.249-1.724-2.934-1.6850.697-2.7690.507-1.8851.252-2.8271.6915.102-1.4551.9386.321-3.31-4.0277.2177.833-1.717-5.0811.0841.704-2.207-3.8221.9824.4890.974-6.363.0026.52-0.313-0.470.3732.86
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations

us-gaap:IncreaseDecreaseInPensionAndPostretirementObligations


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-6608000.0-6363000.0-4182000.0-12316000.0-3748000.0-36000.0-18000.0-1984000.0-2648000.0-3947000.0-1645000.0-3879000.0-3475000.0-5217000.0-819000.00-7710000.0-7711000.0-1360000.0-1358000.0-4073000.0-2714000.0
Percentage of IncreaseDecreaseInPensionAndPostretirementObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities

us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities


Increase
Period End2021-03-16
Value160
Percentage of IncreaseDecreaseInRegulatoryAssetsAndLiabilities100.0

us-gaap:IncrementalCommonSharesAttributableToAcceleratedShareRepurchaseAgreements

us-gaap:IncrementalCommonSharesAttributableToAcceleratedShareRepurchaseAgreements


Incremental
Period End2020-12-312020-09-302020-06-302020-03-31
Value-1.491-2.997-8.92717
Percentage of IncrementalCommonSharesAttributableToAcceleratedShareRepurchaseAgreements100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToEquityForwardAgreements

us-gaap:IncrementalCommonSharesAttributableToEquityForwardAgreements


Incremental
Period End2021-06-302021-03-312019-06-30
Value285000.03000.0423000.0
Percentage of IncrementalCommonSharesAttributableToEquityForwardAgreements100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements

us-gaap:IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements


Incremental
Period End2020-09-302020-03-31
Value591000.0607000.0
Percentage of IncrementalCommonSharesAttributableToEquityUnitPurchaseAgreements100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value387000.0401000.040000.0291000.0267000.0472000.017000.0411000.0312000.0339000.024000.0434000.0372000.0437000.043000.0464000.0436000.0490000.035000.0481000.0796000.0715000.0-50000.0791000.0829000.0904000.0-40000.01008000.0954000.0971000.0-94000.01092000.0876000.0868000.07000.0811000.0735000.0694000.0-37000.0654000.0667000.0559000.034000.0299000.0227000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCommitmentFeePercentage us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityCommitmentFeePercentage

us-gaap:RevolvingCreditFacility, wtrg:UnsecuredRevolvingCreditFacilityWithTwoBanks


Line
Period End2020-11-30
Value0.05
Percentage of LineOfCreditFacilityCommitmentFeePercentage100.0

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable

us-gaap:NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable


Noncontrolling
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.0913.626-0.470.127-0.292-0.135-1.24-0.543-0.573-0.215-0.911-0.3820.071-0.5930.1610.030.167-1.6210.2290.249330.6980.0840.7141.3160.7361.2510.6860.933-0.0781.1540.656-1.045-0.682-0.249
Percentage of NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.381-0.197-1.231-0.4820.045-0.028-0.168-1.313-0.521-0.462-0.348-0.7030.0770.075-0.775-1.592-0.0270.171-1.496-0.0130.0050.040.052-0.2690.1161.180.234-0.543-0.0610.091-0.5150.0960.110.233-0.189-8.9995.1665.5340.3150.2480.1890.194-2.3020.8054.889-0.051
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts us-gaap:LongtermDebtType

us-gaap:PaymentsOfDebtIssuanceCosts

wtrg:LongTermDebts


Payments
Period End2021-04-19
Value4.01
Percentage of PaymentsOfDebtIssuanceCosts100.0

us-gaap:PaymentsOfDebtIssuanceCosts us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

wtrg:LongTermDebts, us-gaap:SubsequentEvent


Payments
Period End2021-04-19
Value4.01
Percentage of PaymentsOfDebtIssuanceCosts100.0

us-gaap:PaymentsToAcquireBuildings

us-gaap:PaymentsToAcquireBuildings


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value226178281261174118148132135133152126111105
Percentage of PaymentsToAcquireBuildings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBuildings us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value926459678.128
Percentage of PaymentsToAcquireBuildings40.736.022.738.66.8

us-gaap:OperatingSegments, wtrg:Water


Payments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value134113158106110132135133
Percentage of PaymentsToAcquireBuildings59.263.960.861.293.2100.0100.0100.0

us-gaap:PaymentsToAcquireBuildings us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Payments
Period End2021-06-302021-03-312020-09-30
Value0.2920.10243
Percentage of PaymentsToAcquireBuildings0.10.116.5

us-gaap:PaymentsToAcquireWasteWaterSystems

us-gaap:PaymentsToAcquireWasteWaterSystems


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value34-0.028213446590.10.050.46945990.00.190.00.0955.5450.223.7970.01.1654.4612.6620.408250.7882.9397.210.4224.0450.5933.6830.047105.198121021.2971.5810.4016.5330.06.6770.3271.4160.205
Percentage of PaymentsToAcquireWasteWaterSystems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities

us-gaap:ProceedsFromInsuranceSettlementOperatingActivities


Proceeds
Period End2020-08-03
Value2874000.0
Percentage of ProceedsFromInsuranceSettlementOperatingActivities100.0

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfCommonStock


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.0954.1614.2613.9994.0620.3990.3854.0354.0620.3810.3590.3610.3690.3690.3550.360.3590.3590.3380.3320.333-0.1883.6623.3893.4273.4583.3033.2293.23.2063.0133.1873.2013.2423.13.1133.075
Percentage of ProceedsFromIssuanceOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromOtherEquity

us-gaap:ProceedsFromOtherEquity


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.0-0.8347300.0-0.528
Percentage of ProceedsFromOtherEquity0.0100.0100.00.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value104000.0225000.0294000.0-438000.054000.0-6000.0-13000.0-939000.0-212000.0-13000.0-108000.0-209000.0-206000.0-197000.0-204000.0-243000.0-198000.0-206000.0-202000.0-207000.0-194000.0-208000.0-198000.0-201000.0-191000.0-263000.0-213000.0-218000.0-181000.0-181000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.7920.7140.3740.1480.1170.950.1630.1890.3711.1750.2570.1830.0091.010.270.2760.7911.5360.4240.2670.7532.8163.0221.0660.62.8522.4260.1781.9352.7570.7574.279127.9011.8654.865.8682.0050.7680.2680.664.9071.7892.4780.3231.088
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.598.9218.727119.3952.2041.6841.4951.3240.8031.661.4321.3170.8961.511.4240.9411.1111.9721.4321.2840.8172.0721.461.2970.9361.191.5071.6331.5081.3741.3261.090.9221.7331.0581.1360.8781.5881.4131.240.9621.3461.2421.1181.115
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions


Public
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4.9062.9343.9663.5432.232.9483.8924.6133.6114.0564.5133.0662.5772.8674.6413.9143.4633.1932.3692.2671.8712.3082.2891.7081.041.1821.8351.1950.9371.1670.8060.4260.490.5520.6580.9191.2441.3441.4861.8041.9321.9771.1671.0181.4611.541
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Public
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.468-0.3130.4610.3190.036
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions9.5-10.713.014.31.2

us-gaap:OperatingSegments, wtrg:Water


Public
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4.4383.2473.0821.9112.9124.6133.6114.056
Percentage of PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions90.5110.787.085.798.8100.0100.0100.0

us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount dei:LegalEntity

us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount

wtrg:PennsylvaniaOperatingDivision


Public
Period End2021-03-31
Value-0.277
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount100.0

us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount us-gaap:StatementGeographical

stpr:KY


Public
Period End2021-06-302021-03-31
Value0.00.747
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.0-269.7

stpr:NC


Public
Period End2020-10-26
Value3.426
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.0

stpr:VA


Public
Period End2021-02-01
Value1.733
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.0

wtrg:IllinoisAndNorthCarolina


Public
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value2.169108.0260.4793.775
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.0-3871.80.00.00.0

wtrg:IndianaAndOhio


Public
Period End2020-09-302020-06-302020-03-31
Value0.00.0481.006
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.00.00.0

wtrg:NewJerseyOhioAndIndiana


Public
Period End2021-06-302021-03-31
Value1.0841.559
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.0-562.8

us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount us-gaap:StatementGeographical, us-gaap:SubsequentEventType

stpr:NC, us-gaap:SubsequentEvent


Public
Period End2020-10-26
Value3.426
Percentage of PublicUtilitiesApprovedRateIncreaseDecreaseAmount0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312013-12-312012-12-312012-09-30
Value1.9840.10.550.125.7436.010.020.09-0.0635.230.06-1.920.510-0.0530.5700.891.3925.530.010.21000.030
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.00.0

wtrg:PerformanceShareUnits


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.546.312.061.96-2.7136.09
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue25.3115.5374.51633.3-47.2100.2

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2020-12-312020-09-302020-06-302020-03-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-30
Value00.55033.47000-6.2700
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.00.0100.00.00.00.0100.00.00.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value044.44-0.21-0.082.3847.10.240036.0100.24034.9100030.37-0.0100.0532.040.03-0.29026.2600024.80-5.82029.100022.49-4.440
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.0-14.50.0140.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.092.80.00.00.00.00.00.00.00.0

us-gaap:StockCompensationPlan


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value0.7444.54-0.26-0.7841.581.592.0936.730.760.6833.90.130.6432.15-1.071.731.940
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.0-47.30.0124.20.00.00.00.00.00.00.00.00.00.00.00.00.0

wtrg:PerformanceShareUnits


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-0.0543.23-0.18-0.223.5652.09-0.223.5652.09
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.00.00.0-40.00.0155.60.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

us-gaap:RestrictedStock


Share
Period End2021-06-302021-03-312015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value033.4717.7002.3217.70-3.872.2717.0900.04
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0100.0100.00.00.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.2435.030.090.231.050.01032.88-0.15026.390.06026.120023.370.70.8219.440017.770-4.46022.2900
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0104.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0109.80.00.0100.40.0115.20.0130.40.00.0

us-gaap:StockCompensationPlan


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-30
Value0.7444.54-0.26-0.7841.581.592.0936.730.760.6833.90.130.6432.15-1.07
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue0.0133.10.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value-0.335.342.2
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-31
Value-0.5934.87
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2021-06-302021-03-312020-12-31
Value0.1235.770
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice100.0100.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage us-gaap:AwardType, us-gaap:Vesting

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:EmployeeStockOption, us-gaap:ShareBasedCompensationAwardTrancheOne


Sharebased
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value033.0032.6700.33000.33000.33000.33
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.00.0100.00.0100.00.00.0100.00.00.0100.00.00.0100.0

us-gaap:EmployeeStockOption, us-gaap:ShareBasedCompensationAwardTrancheThree


Sharebased
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
Value033.032.6700.33000.33000.33000.33
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.0100.00.0100.00.00.0100.00.00.0100.00.00.0100.0

us-gaap:EmployeeStockOption, us-gaap:ShareBasedCompensationAwardTrancheTwo


Sharebased
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
Value033.032.6700.33000.33000.33000.33
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage0.0100.0100.00.0100.00.00.0100.00.00.0100.00.00.0100.0

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockGrantedDuringPeriodValueSharebasedCompensation

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value-2000.0-97000.0-3000.0-2000.0-112000.0-2000.0-3000.0-67000.0-5000.0-3000.0-2000.0-91000.0-2000.0-3000.0-1000.0-79000.0-2000.0-2000.0-3000.0-108000.0-1000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value2000.097000.03000.02000.0112000.02000.03000.067000.05000.03000.02000.091000.02000.03000.01000.079000.02000.02000.03000.0108000.01000.08000.012000.0140000.0007000.0100000.0004000.013000.00-5000.08000.05000.025000.008000.0-1000.0
Percentage of StockGrantedDuringPeriodValueSharebasedCompensation-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan

us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.0954.1614.2613.9994.0620.3990.3854.0354.0620.3810.3590.361
Percentage of StockIssuedDuringPeriodValueDividendReinvestmentPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueDividendReinvestmentPlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.0494.1124.2093.9494.0190.3940.383.9763.9990.3760.3540.355
Percentage of StockIssuedDuringPeriodValueDividendReinvestmentPlan98.998.898.898.798.998.798.798.598.498.798.698.3

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0460.0490.0520.050.0430.0050.0050.0590.0630.0050.0050.006
Percentage of StockIssuedDuringPeriodValueDividendReinvestmentPlan1.11.21.21.31.11.31.31.51.61.31.41.7

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.7920.7140.1480.1170.950.1890.3711.1750.2570.1830.0091.010.270.2760.7911.5360.4240.2670.7532.8163.0221.0660.62.8522.4260.1781.9352.7570.7574.279127.9011.8654.865.8682.005
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.7810.7040.1460.1150.9220.1840.3611.1360.2480.1780.0080.9790.2620.2670.7641.4930.4120.2590.7312.7442.943
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised98.698.698.698.397.197.497.396.796.597.388.996.997.096.796.697.297.297.097.197.497.4

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.0110.010.0020.0020.0280.0050.010.0390.0090.0050.0010.0310.0080.0090.0270.0430.0120.0080.0220.0720.0790.030.0180.0850.0650.0050.0610.0940.0240.0980.3010.2090.0540.1260.1750.062
Percentage of StockIssuedDuringPeriodValueStockOptionsExercised1.41.41.41.72.92.62.73.33.52.711.13.13.03.33.42.82.83.02.92.62.62.83.03.02.72.83.23.43.22.32.42.62.92.63.03.1

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.0173.2620.0020.0044.3390.0080.0021.8570.0630.0010.02.4910.0510.0230.042.0530.1230.0460.0322.8274.979124.2033.7541.783110.3761.9730.008
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value0.0173.2620.0020.0044.3390.0080.0021.8570.0630.0010.02.4910.0510.0230.042.0530.1230.0460.0322.8274.979124.2033.7541.783110.3761.9730.008
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseGasAndPetroleumPurchased

us-gaap:UtilitiesOperatingExpenseGasAndPetroleumPurchased


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value4413292164312
Percentage of UtilitiesOperatingExpenseGasAndPetroleumPurchased100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseGasAndPetroleumPurchased us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Utilities
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value39122144112
Percentage of UtilitiesOperatingExpenseGasAndPetroleumPurchased88.693.088.695.8100.0

us-gaap:UtilitiesOperatingExpenseGasAndPetroleumPurchased us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Utilities
Period End2021-06-302021-03-312020-09-302020-06-30
Value5.1099.2651.9031.827
Percentage of UtilitiesOperatingExpenseGasAndPetroleumPurchased11.47.011.44.2

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12712515713612810685828679926873737967706977797373777879737472707174727068727166686970706766686967
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Utilities
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value525159508.823
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations41.041.043.739.68.3

us-gaap:OperatingSegments, wtrg:Water


Utilities
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value7778797673817474
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations61.062.658.259.669.198.885.793.7

us-gaap:UtilitiesOperatingExpenseMaintenanceAndOperations us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Utilities
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-31
Value-2.62-4.598-2.6991.083240.944124.976-0.340.4682.643-2.79-1.7071.6186.7994.3186.2166.1468.4986.1714.0552.8593.23
Percentage of UtilitiesOperatingExpenseMaintenanceAndOperations-2.1-3.7-2.00.822.61.214.36.3-0.50.63.6-4.1-2.42.38.55.88.57.810.78.45.64.14.5

us-gaap:UtilitiesOperatingExpenseTaxes

us-gaap:UtilitiesOperatingExpenseTaxes


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value212120201916141514141415141412151414131414141114131412121312121313131213
Percentage of UtilitiesOperatingExpenseTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UtilitiesOperatingExpenseTaxes us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Utilities
Period End2021-06-302020-06-30
Value4.6383.991
Percentage of UtilitiesOperatingExpenseTaxes22.020.5

us-gaap:OperatingSegments, wtrg:Water


Utilities
Period End2021-06-302020-06-30
Value1614
Percentage of UtilitiesOperatingExpenseTaxes76.076.7

us-gaap:UtilitiesOperatingExpenseTaxes us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Utilities
Period End2021-06-302020-06-30
Value0.4380.543
Percentage of UtilitiesOperatingExpenseTaxes2.12.8

us-gaap:UtilitiesOperatingExpenseTaxes us-gaap:StatementScenario

wtrg:GrossReceiptsExciseAndFranchise


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.9493.6843.7384.0233.5793.1223.3193.4233.5383.22
Percentage of UtilitiesOperatingExpenseTaxes18.717.518.519.618.419.022.222.523.821.5

wtrg:OtherTaxes


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.5720.9230.4510.4990.7010.220.1150.0980.090.086
Percentage of UtilitiesOperatingExpenseTaxes2.74.42.22.43.61.30.80.60.60.6

wtrg:Payroll


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.7186.7565.2934.7884.6934.282.3152.2162.2913.481
Percentage of UtilitiesOperatingExpenseTaxes22.332.126.223.324.126.015.514.615.423.3

wtrg:Property


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9.577.7148.3088.4378.2757.0337.327.026.9296.466
Percentage of UtilitiesOperatingExpenseTaxes45.336.741.241.042.642.849.146.246.643.2

wtrg:PumpingFees


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.4641.1261.5191.9411.4871.0811.1451.7261.2720.969
Percentage of UtilitiesOperatingExpenseTaxes6.95.47.59.47.76.67.711.48.66.5

wtrg:RegulatoryAssessments


Utilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.8470.8380.8640.8670.6980.70.7030.7180.7480.747
Percentage of UtilitiesOperatingExpenseTaxes4.04.04.34.23.64.34.74.75.05.0

wtrg:DebtComponentOfAllowanceForFundsUsedDuringConstruction

wtrg:DebtComponentOfAllowanceForFundsUsedDuringConstruction


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1223000.0170000.01477000.01249000.0835000.0873000.0978000.01136000.01087000.01030000.0
Percentage of DebtComponentOfAllowanceForFundsUsedDuringConstruction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:DefinedBenefitPlanAmortizationOfActuarialLoss us-gaap:BusinessAcquisition, us-gaap:RetirementPlanType

wtrg:DefinedBenefitPlanAmortizationOfActuarialLoss

wtrg:PeoplesGasAcquisition, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-03-31
Value-40000.0
Percentage of DefinedBenefitPlanAmortizationOfActuarialLoss100.0

wtrg:DefinedBenefitPlanAmortizationOfActuarialLoss us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value55000.095000.0154000.0156000.0156000.0156000.0166000.0166000.0166000.0166000.0
Percentage of DefinedBenefitPlanAmortizationOfActuarialLoss0.0-237.50.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value727000.01071000.01991000.01992000.01992000.01992000.01981000.01982000.01982000.01982000.0
Percentage of DefinedBenefitPlanAmortizationOfActuarialLoss0.0-2677.50.00.00.00.00.00.00.00.0

wtrg:IncreaseDecreaseInInventoriesReceivablesAndPrepayments

wtrg:IncreaseDecreaseInInventoriesReceivablesAndPrepayments


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-25.3-30.2616020-22.407-22.921-7.3225.9857.935-2.263
Percentage of IncreaseDecreaseInInventoriesReceivablesAndPrepayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:InsuranceProceeds

wtrg:InsuranceProceeds


Insurance
Period End2020-08-03
Value2874000.0
Percentage of InsuranceProceeds100.0

wtrg:InterestExpenseNetOfAfudc

wtrg:InterestExpenseNetOfAfudc


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value51505149513051222327
Percentage of InterestExpenseNetOfAfudc100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:InterestExpenseNetOfAfudc us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value20179.3339.3341.887
Percentage of InterestExpenseNetOfAfudc39.534.318.818.16.3

us-gaap:OperatingSegments, wtrg:Water


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2726272525242423
Percentage of InterestExpenseNetOfAfudc52.552.554.450.584.7106.3103.384.9

wtrg:InterestExpenseNetOfAfudc us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value4.1546.62613162.705-1.445-0.7584.192
Percentage of InterestExpenseNetOfAfudc8.013.226.831.49.0-6.3-3.315.1

wtrg:NonCashCustomerAdvancesAndContributionsInAidOfConstruction

wtrg:NonCashCustomerAdvancesAndContributionsInAidOfConstruction


Non
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value8.6548.9979.438108.6373.1064.19617
Percentage of NonCashCustomerAdvancesAndContributionsInAidOfConstruction100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:NonOperatingIncomeExpenseOther

wtrg:NonOperatingIncomeExpenseOther


Non
Period End2021-06-302020-06-30
Value2164000.0742000.0
Percentage of NonOperatingIncomeExpenseOther100.0100.0

wtrg:NonOperatingIncomeExpenseOther us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:NaturalGas


Non
Period End2021-06-302020-06-30
Value439000.0-78000.0
Percentage of NonOperatingIncomeExpenseOther20.3-10.5

us-gaap:OperatingSegments, wtrg:Water


Non
Period End2021-06-302020-06-30
Value1940000.0454000.0
Percentage of NonOperatingIncomeExpenseOther89.661.2

wtrg:NonOperatingIncomeExpenseOther us-gaap:StatementBusinessSegments

us-gaap:CorporateAndOther


Non
Period End2021-06-302020-06-30
Value-215000.0366000.0
Percentage of NonOperatingIncomeExpenseOther-9.949.3

wtrg:NumberOfCustomers us-gaap:BusinessAcquisition

wtrg:NumberOfCustomers

wtrg:WastewaterUtilitySystemsInVariousStates


Number
Period End2020-10-312020-09-30
Value514.011000.0
Percentage of NumberOfCustomers100.0100.0

wtrg:NumberOfCustomers us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

wtrg:WastewaterUtilitySystemsInVariousStates, us-gaap:SubsequentEvent


Number
Period End2020-10-31
Value256.0
Percentage of NumberOfCustomers49.8

wtrg:NumberOfCustomers us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

stpr:IL, wtrg:WastewaterUtilitySystem


Number
Period End2020-12-31
Value6500.0
Percentage of NumberOfCustomers0.0

stpr:IL, wtrg:WastewaterUtilitySystemsInVariousStates


Number
Period End2021-04-302020-10-31
Value2121.0514.0
Percentage of NumberOfCustomers0.0100.0

stpr:PA, wtrg:WastewaterUtilitySystem


Number
Period End2021-01-312020-12-312020-06-302019-12-312019-11-302018-11-302018-07-31
Value10500.01965.04947.09887.04950.04950.05497.0
Percentage of NumberOfCustomers0.00.00.00.00.00.00.0

stpr:PA, wtrg:WastewaterUtilitySystemsInVariousStates


Number
Period End2020-09-30
Value11000.0
Percentage of NumberOfCustomers100.0

stpr:TX, wtrg:WaterUtilitySystem


Number
Period End2020-07-31
Value980.0
Percentage of NumberOfCustomers0.0

wtrg:NumberOfCustomers us-gaap:StatementGeographical, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stpr:PA, wtrg:WaterUtilitySystem, us-gaap:SubsequentEvent


Number
Period End2021-07-31
Value2930.0
Percentage of NumberOfCustomers0.0

wtrg:PercentageOfTargetAwardAmountParticipantMayEarn us-gaap:Range, us-gaap:AwardType

wtrg:PercentageOfTargetAwardAmountParticipantMayEarn

srt:Maximum, wtrg:PerformanceShareUnits


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0200.00198.002.0
Percentage of PercentageOfTargetAwardAmountParticipantMayEarn0.0100.00.0100.00.0100.0

wtrg:ProceedsFromAdvancesForConstructionFinancingActivities

wtrg:ProceedsFromAdvancesForConstructionFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4272000.04716000.02110000.04474000.01539000.01462000.0400000.02778000.04056000.01858000.0
Percentage of ProceedsFromAdvancesForConstructionFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:ProceedsFromRepaymentsOfBankOverdraftsLessShortTermDebt

wtrg:ProceedsFromRepaymentsOfBankOverdraftsLessShortTermDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13-44.003149.57619-10.9435.875-17.22517-3.856
Percentage of ProceedsFromRepaymentsOfBankOverdraftsLessShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:ProceedsFromSaleOfUtilitySystemAndOther

wtrg:ProceedsFromSaleOfUtilitySystemAndOther


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value860000.0100000.01052000.0831000.072000.0160000.0532000.0179000.01940000.0242000.0
Percentage of ProceedsFromSaleOfUtilitySystemAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:ReclassificationOfGoodwillAcquisitionAdjustment

wtrg:ReclassificationOfGoodwillAcquisitionAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value69000.042000.0-3019000.010000.0091000.0
Percentage of ReclassificationOfGoodwillAcquisitionAdjustment100.0100.0100.0100.00.0100.0

wtrg:ReclassificationOfGoodwillAcquisitionAdjustment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, wtrg:Water


Reclassification
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value69000.042000.010000.0091000.0
Percentage of ReclassificationOfGoodwillAcquisitionAdjustment100.0100.0100.00.0100.0

wtrg:RepaymentsOfAdvancesForConstructionFinancingActivities

wtrg:RepaymentsOfAdvancesForConstructionFinancingActivities


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value990000.0971000.04345000.02165000.0762000.01065000.04580000.0757000.0723000.0765000.0
Percentage of RepaymentsOfAdvancesForConstructionFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue us-gaap:AwardType

wtrg:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue

wtrg:PerformanceShareUnits


Share
Period End2021-06-302021-03-312020-12-31
Value0.1453.49-0.58
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceCriteriaAdjustmentWeightedAverageGrantDateFairValue100.0100.0100.0

wtrg:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

wtrg:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodWeightedAverageGrantDateFairValue

wtrg:PerformanceShareUnits


Share
Period End2021-06-302021-03-312020-12-31
Value0.131.260
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriodWeightedAverageGrantDateFairValue100.0100.00.0

wtrg:TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation

wtrg:TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2170000.02457000.01978000.01824000.01925000.01690000.02031000.01971000.0
Percentage of TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0

wtrg:TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value2316000.02631000.02082000.01918000.02072000.01774000.02129000.01929000.0
Percentage of TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation106.7107.1105.3105.2107.6105.0104.897.9

us-gaap:RetainedEarnings


Treasury
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-146000.0-174000.0-104000.0-94000.0-147000.0-84000.0-98000.042000.0
Percentage of TreasuryStockReissuedAtLowerThanRepurchasePriceShareBasedCompensation-6.7-7.1-5.3-5.2-7.6-5.0-4.82.1

us-gaap:AccountsPayableRelatedPartiesCurrent us-gaap:ConsolidatedEntities

us-gaap:AccountsPayableRelatedPartiesCurrent

srt:ParentCompany


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value38323934
Percentage of AccountsPayableRelatedPartiesCurrent100.0100.0100.0100.0

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableGross


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1947410810510410510299979590
Percentage of AccountsReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312012-12-312011-12-312010-12-31
Value154671019897928178
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableRelatedPartiesCurrent us-gaap:ConsolidatedEntities

us-gaap:AccountsReceivableRelatedPartiesCurrent

srt:ParentCompany


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value38813410455
Percentage of AccountsReceivableRelatedPartiesCurrent100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value407.3536.9147.0717.0955.8735.3654.434.3214.5594.5175.067
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries dei:LegalEntity

us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries

wtrg:AquaPennsylvanias


Amount
Period End2020-12-31
Value1439
Percentage of AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries100.0

us-gaap:AssetRetirementObligationsNoncurrent

us-gaap:AssetRetirementObligationsNoncurrent


Asset
Period End2021-06-302021-03-312020-12-312020-09-30
Value1.3551.3481.33650
Percentage of AssetRetirementObligationsNoncurrent100.0100.0100.0100.0

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent

us-gaap:AssetsHeldForSaleNotPartOfDisposalGroupCurrent


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value692000.01558000.01558000.01558000.01558000.01558000.03007000.03139000.01558000.01558000.01558000.01543000.01543000.01543000.01925000.01728000.03606000.01641000.01779000.01779000.0
Percentage of AssetsHeldForSaleNotPartOfDisposalGroupCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsNet

us-gaap:AssetsNet


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value46833880200919571850172516551535
Percentage of AssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsNet dei:LegalEntity

wtrg:AquaPennsylvanias


Assets
Period End2020-12-312019-12-31
Value19111775
Percentage of AssetsNet40.845.7

us-gaap:AvailableForSaleSecurities

us-gaap:AvailableForSaleSecurities


Available
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value252320211710
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0

us-gaap:BankAcceptancesExecutedAndOutstanding

us-gaap:BankAcceptancesExecutedAndOutstanding


Bank
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value44108.95211220212111228.307
Percentage of BankAcceptancesExecutedAndOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BankOverdrafts

us-gaap:BankOverdrafts


Bank
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value13442919105.068225.0958.951215122112
Percentage of BankOverdrafts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BilledContractReceivables

us-gaap:BilledContractReceivables


Billed
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value18969686563565556545253
Percentage of BilledContractReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value53415345
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value5369
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets100.5

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value-27.237
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets-0.5

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets us-gaap:StatementScenario, us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value241
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets100.0

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value1.159
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets0.5

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:StatementScenario, us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value181
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value186183
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value182
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther98.1

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value3.498
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther1.9

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value213229
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value245
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities115.0

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value-32.054
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities-15.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value18761879
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value1903
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities101.5

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value-27.237
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities-1.5

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet us-gaap:StatementScenario, us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value3465
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value168157
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value155
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther92.2

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value13
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther7.8

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value7575
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value82
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets109.9

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value-7.457
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets-9.9

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-03-16
Value24762468
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment us-gaap:StatementScenario, us-gaap:BusinessAcquisition

wtrg:AmountsPreviouslyRecognized, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value2468
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment99.7

wtrg:MeasurementPeriodAdjustments, wtrg:PeoplesGasAcquisition


Business
Period End2020-12-31
Value7.605
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment0.3

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

wtrg:TwoThousandTwentyAcquisition


Business
Period End2020-12-31
Value12
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:StatementGeographical, us-gaap:BusinessAcquisition

stpr:IL, wtrg:WastewaterUtilitySystem


Business
Period End2020-12-31
Value32
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet260.2

stpr:PA, wtrg:WastewaterUtilitySystem


Business
Period End2020-12-312020-09-302020-06-302019-11-302018-12-312018-07-31
Value295321212874
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet242.80.00.00.00.00.0

stpr:TX, wtrg:WaterUtilitySystem


Business
Period End2020-07-31
Value4.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet0.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet us-gaap:StatementGeographical, us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

stpr:PA, wtrg:WaterAndWastewaterUtilitySystems, us-gaap:SubsequentEvent


Business
Period End2021-01-31
Value72
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet0.0

us-gaap:BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCosts us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCosts

wtrg:PeoplesGasAcquisition


Business
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value20202020161616
Percentage of BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizationLongtermDebtAndEquity

us-gaap:CapitalizationLongtermDebtAndEquity


Capitalization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10485103581019197889810934268246760657344554407431241854035396538903719366435873558356735043469340933633271321631753067305230032939291828822929283428722710264726152680272227062496
Percentage of CapitalizationLongtermDebtAndEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiability us-gaap:ConsolidatedEntities, us-gaap:StatementGeographical

us-gaap:ContractWithCustomerLiability

srt:Subsidiaries, stpr:PA


Contract
Period End2020-12-31
Value16
Percentage of ContractWithCustomerLiability100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1081029910510099951041029993949393
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContributionsInAidOfConstruction

us-gaap:ContributionsInAidOfConstruction


Contributions
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value581578573566563557555582593599590588581581571553551546542538534531512510505503498495489467476471467464460455462447444440447449444424
Percentage of ContributionsInAidOfConstruction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount

us-gaap:DebtInstrumentCarryingAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value57695665563053965301487230773112300026392563239523202188214320591987193819101832183617951779
Percentage of DebtInstrumentCarryingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCarryingAmount us-gaap:DebtInstrument

wtrg:LongTermDebtOfSubsidiariesEight


Debt
Period End2020-12-312019-12-312018-12-31
Value293031
Percentage of DebtInstrumentCarryingAmount0.51.01.2

wtrg:LongTermDebtOfSubsidiariesFive


Debt
Period End2020-12-312019-12-312018-12-31
Value13151054831
Percentage of DebtInstrumentCarryingAmount23.434.332.4

wtrg:LongTermDebtOfSubsidiariesFour


Debt
Period End2020-12-312019-12-312018-12-31
Value1316655497
Percentage of DebtInstrumentCarryingAmount23.421.319.4

wtrg:LongTermDebtOfSubsidiariesNine


Debt
Period End2020-12-312019-12-312018-12-31
Value4.4255.0265.581
Percentage of DebtInstrumentCarryingAmount0.10.20.2

wtrg:LongTermDebtOfSubsidiariesOne


Debt
Period End2020-12-312019-12-312018-12-31
Value2.8053.4743.732
Percentage of DebtInstrumentCarryingAmount0.00.10.1

wtrg:LongTermDebtOfSubsidiariesSeven


Debt
Period End2020-12-312019-12-312018-12-31
Value333131
Percentage of DebtInstrumentCarryingAmount0.61.01.2

wtrg:LongTermDebtOfSubsidiariesSix


Debt
Period End2020-12-312019-12-312018-12-31
Value1760154
Percentage of DebtInstrumentCarryingAmount0.32.06.0

wtrg:LongTermDebtOfSubsidiariesTen


Debt
Period End2020-12-312019-12-312018-12-31
Value161920
Percentage of DebtInstrumentCarryingAmount0.30.60.8

wtrg:LongTermDebtOfSubsidiariesThree


Debt
Period End2020-12-312019-12-312018-12-31
Value2651517
Percentage of DebtInstrumentCarryingAmount4.70.50.7

wtrg:LongTermDebtOfSubsidiariesTwo


Debt
Period End2020-12-312019-12-312018-12-31
Value101011
Percentage of DebtInstrumentCarryingAmount0.20.30.5

us-gaap:DeferredCostsAndOtherAssets

us-gaap:DeferredCostsAndOtherAssets


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-31
Value115875651536142424140393938383836333130303030525254545252515150505050497356
Percentage of DeferredCostsAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCostsAndOtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value31332929
Percentage of DeferredCostsAndOtherAssets56.478.874.576.4

us-gaap:DeferredCostsCurrentAndNoncurrent

us-gaap:DeferredCostsCurrentAndNoncurrent


Deferred
Period End2020-12-31
Value31
Percentage of DeferredCostsCurrentAndNoncurrent100.0

us-gaap:DeferredIncomeTaxAssetsNet us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxAssetsNet

srt:ParentCompany


Deferred
Period End2020-12-312019-12-312018-12-31
Value143235
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value155610299558841418128511691020889
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


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
Value33311612712715817720219820211678
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsDomestic

us-gaap:StateAndLocalJurisdiction


Deferred
Period End2020-12-31
Value1.375
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsDomestic100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


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
Value102.7982.7612.3482.1371.1021.5283.1332.362.1831.679
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOtherLossCarryforwards

us-gaap:DeferredTaxAssetsOtherLossCarryforwards


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
Value20665435677931121281114712
Percentage of DeferredTaxAssetsOtherLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits


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
Value5120393638363419353624
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent


Deferred
Period End2020-12-312019-12-31
Value173.54
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent100.0100.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-31
Value163.54
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.0

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets

us-gaap:DeferredTaxLiabilitiesRegulatoryAssets


Deferred
Period End2020-12-312019-12-31
Value195000.0827000.0
Percentage of DeferredTaxLiabilitiesRegulatoryAssets100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.7929.69.5161313
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value8589889096
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax1258.7936.5927.3649.7737.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-432000.0-896000.0-1360000.0-1869000.0-2378000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1524000.02115000.02734000.03262000.03841000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax-352.8-236.0-201.0-174.5-161.5

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value11
Percentage of DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:FairValueByLiabilityClass, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:Obligations, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.680.03420.04340.03730.0425
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0100.0

us-gaap:Obligations, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2.570.03350.0430.03660.0413
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate95.998.099.198.197.2

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value3.420.04340.03730.04250.0460.0417
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate127.6126.985.9113.9108.20.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value3.350.0430.03660.04130.04480.042
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate125.0125.784.3110.7105.40.0

us-gaap:DefinedBenefitPlanBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1257969756965
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value486310281320308306
Percentage of DefinedBenefitPlanBenefitObligation387.8390.2406.0422.6444.6470.6

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value34191918
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value152106104106
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter438.7543.3551.5567.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.7642.4372.3262.249
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value28201920
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths490.8839.9858.3912.2

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.4233.3123.2673.177
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value29202121
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive454.9621.5661.2677.9

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.1673.1333.0432.957
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value29212120
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour472.5674.1702.2699.2

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.1852.882.8312.777
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value30202021
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree488.6726.1718.2777.1

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.9552.642.622.553
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value29202120
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo502.9770.1816.1801.5

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value14
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear100.0

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-31
Value2111000.08443000.0
Percentage of DefinedBenefitPlanExpectedFutureEmployerContributionsRemainderOfFiscalYear100.0100.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-26.38-25.531-24.021-28.21-23.227
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value-59.418-43.92-42.957-50.626-65.812
Percentage of DefinedBenefitPlanFundedStatusOfPlan225.2172.0178.8179.5283.3

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

wtrg:AccumulatedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value458290264
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets

wtrg:AccumulatedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value426266239
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0

wtrg:ProjectedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value426266239
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation

wtrg:ProjectedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value486310281
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation100.0100.0100.0

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

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

srt:Maximum, us-gaap:HedgeFunds, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value50.00.50.5
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0

srt:Maximum, us-gaap:HedgeFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value50.00.50.5
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0

srt:Maximum, wtrg:ReturnSeekingAssets, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value70.00.7
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage140.0140.0

srt:Maximum, wtrg:ReturnSeekingAssets, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value70.00.7
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage140.0140.0

srt:Minimum, us-gaap:HedgeFunds, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value30.00.30.3
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage60.060.060.0

srt:Minimum, us-gaap:HedgeFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value30.00.30.3
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage60.060.060.0

srt:Minimum, wtrg:ReturnSeekingAssets, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value50.00.5
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

srt:Minimum, wtrg:ReturnSeekingAssets, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-31
Value50.00.5
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage200.0200.0200.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage200.0200.0200.00.00.0

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1 us-gaap:FairValueByLiabilityClass, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:Obligations, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6.250.06250.0660.070.066
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1 us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value6.30.0660.070.0660.070.07
Percentage of DefinedBenefitPlanUltimateHealthCareCostTrendRate1100.8105.6106.194.3106.10.0

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

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:HedgeFunds, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value36.00.360.40.38
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0

us-gaap:HedgeFunds, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value46.00.440.420.36
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations127.8122.2105.094.7

wtrg:ReturnSeekingAssets, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value64.00.640.6
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations177.8177.8150.0

wtrg:ReturnSeekingAssets, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value54.00.560.58
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations150.0155.6145.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations277.8277.8250.0263.20.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value100.01.01.01.01.0
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations277.8277.8250.0263.20.0

us-gaap:DerivativeForwardPrice

us-gaap:DerivativeForwardPrice


Derivative
Period End2020-12-312020-08-31
Value45.446.0
Percentage of DerivativeForwardPrice100.0100.0

us-gaap:DerivativeForwardPrice us-gaap:StatementScenario

wtrg:ForwardEquitySaleAgreement


Derivative
Period End2021-06-302021-03-312020-09-302020-08-31
Value44.7745.0845.7146.0
Percentage of DerivativeForwardPrice0.00.00.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration us-gaap:DisposalGroupClassification

us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration

us-gaap:DisposalGroupNotDiscontinuedOperations


Disposal
Period End2020-09-302019-04-30
Value395000.01882000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationConsideration100.0100.0

us-gaap:DisposalGroupIncludingDiscontinuedOperationConsideration us-gaap:StatementGeographical, us-gaap:DisposalGroupClassification

stpr:TX, us-gaap:DisposalGroupNotDiscontinuedOperations


Disposal
Period End2020-09-30
Value395000.0
Percentage of DisposalGroupIncludingDiscontinuedOperationConsideration100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeStockOption


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value597000.02018000.0453000.0223000.00000
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.00.00.00.00.0

us-gaap:RestrictedStockUnitsRSU


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value3118000.02187000.01927000.01401000.01498000.01046000.0953000.01070000.0795000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized522.3108.4425.4628.30.00.00.00.00.0

wtrg:PerformanceShareUnits


Employee
Period End2020-12-312019-12-31
Value6623000.01840000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1109.491.2

us-gaap:EnergyRelatedInventoryNaturalGasInStorage

us-gaap:EnergyRelatedInventoryNaturalGasInStorage


Energy
Period End2021-06-302021-03-312020-12-312020-09-30
Value35103642
Percentage of EnergyRelatedInventoryNaturalGasInStorage100.0100.0100.0100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:EquityMethodInvestmentOwnershipPercentage

wtrg:AquaInfrastructureSubsidiary


Equity
Period End2020-10-30
Value49.0
Percentage of EquityMethodInvestmentOwnershipPercentage100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations, us-gaap:SubsequentEventType

wtrg:AquaInfrastructureSubsidiary, us-gaap:SubsequentEvent


Equity
Period End2020-10-30
Value49.0
Percentage of EquityMethodInvestmentOwnershipPercentage100.0

us-gaap:EquityMethodInvestmentOwnershipPercentage us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

wtrg:JointVenture


Equity
Period End2020-12-312019-12-31
Value49.00.49
Percentage of EquityMethodInvestmentOwnershipPercentage0.00.0

us-gaap:EstimatedInsuranceRecoveries

us-gaap:EstimatedInsuranceRecoveries


Estimated
Period End2021-06-302021-03-312020-12-312020-09-30
Value3327000.03294000.03491000.03325000.0
Percentage of EstimatedInsuranceRecoveries100.0100.0100.0100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4365396642512938302723272224212317201818172112211320122013211320142114211421141616201516
Percentage of InterestPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Interest
Period End2020-12-312019-12-312018-12-312017-12-31
Value147.0543.2363.267
Percentage of InterestPayableCurrent36.023.713.915.3

us-gaap:InvestmentsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:InvestmentsFairValueDisclosure

us-gaap:FairValueInputsLevel1


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value272625242222232222222022212121181817
Percentage of InvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2020-12-31
Value11
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0

us-gaap:LineOfCredit us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LineOfCredit

us-gaap:RevolvingCreditFacility, wtrg:UnsecuredRevolvingCreditFacilityWithTwoBanks


Line
Period End2020-11-30
Value29
Percentage of LineOfCredit100.0

us-gaap:LineOfCreditFacilityCapacityAvailableForTradePurchases us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityCapacityAvailableForTradePurchases

us-gaap:LetterOfCredit


Line
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value263229303226
Percentage of LineOfCreditFacilityCapacityAvailableForTradePurchases100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:CreditFacility

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity

us-gaap:LetterOfCredit


Line
Period End2020-12-312018-12-312017-12-312016-12-312015-12-31
Value385370602560
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity us-gaap:DebtInstrument

wtrg:UnsecuredRevolvingCreditFacilityWithFourBanks


Line
Period End2020-12-312019-12-312018-12-31
Value492515
Percentage of LineOfCreditFacilityCurrentBorrowingCapacity12.80.04.2

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity us-gaap:ConsolidatedEntities

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

srt:ParentCompany


Line
Period End2020-12-31
Value1000
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:LoansPayableFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:LoansPayableFairValueDisclosure

us-gaap:FairValueInputsLevel1


Loans
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value71747847153812510.06.076321521203.6520676.535
Percentage of LoansPayableFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtFairValue us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtFairValue

us-gaap:CarryingReportedAmountFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value5769566556305396530148723077311230002639256323952320218821432059198719381910183218361795177917281699164216191647159915951554152015361588
Percentage of LongTermDebtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value6254590863665925573749643324328532342689258823882322223522622185204920092018213021442020190519051846168216941720168016221540153015951702
Percentage of LongTermDebtFairValue108.4104.3113.1109.8108.2101.9108.0105.6107.8101.9101.099.7100.1102.2105.6106.1103.1103.7105.7116.3116.8112.5107.1110.2108.7102.5104.6104.5105.0101.799.1100.6103.9107.2

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4598285118641718145513371200126712201215
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-31
Value21251025315
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive46.236.016.9

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive us-gaap:DebtInstrument

wtrg:LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.0410.483
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive0.00.0

wtrg:LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value3176
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive0.72.7

wtrg:LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value15071554
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive32.854.5

wtrg:LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value5.9986.183
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive0.10.2

wtrg:LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value5.88429
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive0.11.0

wtrg:LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value23481133
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive51.139.8

wtrg:LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value6546.298
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive14.20.2

wtrg:LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.9631.17
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive0.00.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value841051441131503558864542
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-31
Value403850
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths47.537.034.6

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:DebtInstrument

wtrg:LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1.5720.521
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths1.90.5

wtrg:LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value7.1246.191
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths8.45.9

wtrg:LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value220.292
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths27.00.3

wtrg:LongTermDebtInterestRateRangeNinePointZeroZeroPercentageToNinePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value4.92.4
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths5.82.3

wtrg:LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.9681.016
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths1.11.0

wtrg:LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.6240.574
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths0.70.5

wtrg:LongTermDebtInterestRateRangeSixPointZeroZeroPercentageToSixPointNineNinePercentage


Long
Period End2020-12-31
Value1.364
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths1.6

wtrg:LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value4291
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths50.687.1

wtrg:LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1.9131.863
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths2.31.8

wtrg:LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.4640.67
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths0.60.6

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1521527253649945314235
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive us-gaap:DebtInstrument

wtrg:LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.4880.852
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.35.3

wtrg:LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.63610
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.466.5

wtrg:LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1250.103
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive82.10.6

wtrg:LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.7660.764
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.54.8

wtrg:LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentage


Long
Period End2020-12-31
Value23
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive15.1

wtrg:LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.7421.767
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.511.1

wtrg:LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1.4271.619
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.910.1

wtrg:LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.1960.252
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive0.11.6

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value68172536498954533563
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour us-gaap:DebtInstrument

wtrg:LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.8410.784
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour1.24.6

wtrg:LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1010
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour15.563.3

wtrg:LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.2030.099
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour0.30.6

wtrg:LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.7550.835
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour1.14.9

wtrg:LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value542.065
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour79.212.1

wtrg:LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1.6192.017
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour2.411.8

wtrg:LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.2560.461
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour0.42.7

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value59429384489103175355886
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree us-gaap:DebtInstrument

wtrg:LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.7720.721
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree0.12.4

wtrg:LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value120.787
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree2.22.6

wtrg:LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1590.094
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree26.80.3

wtrg:LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value3850.957
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree64.93.2

wtrg:LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.0170.374
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree0.01.2

wtrg:LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value3324
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree5.682.1

wtrg:LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value2.0171.964
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree0.36.6

wtrg:LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.4620.461
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree0.11.5

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value132589214410316335588634
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-31
Value203828
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo15.566.230.4

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:DebtInstrument

wtrg:LongTermDebtInterestRateRangeEightPointZeroZeroPercentageToEightPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.711.665
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.52.9

wtrg:LongTermDebtInterestRateRangeFivePointZeroZeroPercentageToFivePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.7876.215
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.610.7

wtrg:LongTermDebtInterestRateRangeFourPointZeroZeroPercentageToFourPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.6510.168
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.50.3

wtrg:LongTermDebtInterestRateRangeOnePointZeroZeroPercentageToOnePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.9470.978
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.71.7

wtrg:LongTermDebtInterestRateRangeSevenPointZeroZeroPercentageToSevenPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.3660.666
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.31.1

wtrg:LongTermDebtInterestRateRangeSixPointZeroZeroPercentageToSixPointNineNinePercentage


Long
Period End2020-12-31
Value1.591
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo1.2

wtrg:LongTermDebtInterestRateRangeThreePointZeroZeroPercentageToThreePointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value2341
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo17.470.9

wtrg:LongTermDebtInterestRateRangeTwoPointZeroZeroPercentageToTwoPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value1031.913
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo78.43.3

wtrg:LongTermDebtInterestRateRangeZeroPointZeroZeroPercentageToZeroPointNineNinePercentage


Long
Period End2020-12-312019-12-31
Value0.4640.46
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo0.40.8

us-gaap:LongTermDebtPercentageBearingFixedInterestRate us-gaap:DebtInstrument

us-gaap:LongTermDebtPercentageBearingFixedInterestRate

wtrg:FixedRateLongTermDebt


Long
Period End2020-12-312019-12-312018-12-31
Value3.730.04090.0431
Percentage of LongTermDebtPercentageBearingFixedInterestRate100.0100.0100.0

us-gaap:LongtermDebtWeightedAverageInterestRate us-gaap:DebtInstrument

us-gaap:LongtermDebtWeightedAverageInterestRate

wtrg:LongDebt


Longterm
Period End2020-12-312019-12-312018-12-31
Value3.560.04090.0423
Percentage of LongtermDebtWeightedAverageInterestRate100.0100.0100.0

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:LossContingencyAccrualAtCarryingValue


Loss
Period End2020-12-31
Value21
Percentage of LossContingencyAccrualAtCarryingValue100.0

us-gaap:LossContingencyEstimateOfPossibleLoss

us-gaap:LossContingencyEstimateOfPossibleLoss


Loss
Period End2021-06-302021-03-312020-09-30
Value171716
Percentage of LossContingencyEstimateOfPossibleLoss100.0100.0100.0

us-gaap:NotesPayableToBank us-gaap:DebtInstrument

us-gaap:NotesPayableToBank

wtrg:RevolvingCreditAgreementDueB


Notes
Period End2021-06-302021-03-312020-12-312020-09-30
Value60440385140
Percentage of NotesPayableToBank100.0100.0100.0100.0

us-gaap:NotesReceivableRelatedParties us-gaap:ConsolidatedEntities

us-gaap:NotesReceivableRelatedParties

srt:ParentCompany


Notes
Period End2020-12-312019-12-312018-12-312017-12-31
Value1526411369329
Percentage of NotesReceivableRelatedParties100.0100.0100.0100.0

us-gaap:NotesReceivableRelatedPartiesNoncurrent us-gaap:ConsolidatedEntities

us-gaap:NotesReceivableRelatedPartiesNoncurrent

srt:ParentCompany


Notes
Period End2020-12-312019-12-312018-12-312017-12-31
Value1526411369329
Percentage of NotesReceivableRelatedPartiesNoncurrent100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value3.624.08
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:InternalRevenueServiceIRS


Operating
Period End2020-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-31
Value0.4192344101236568197113112148158141183203180224242290198189204571
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherLongTermNotesPayable us-gaap:DebtInstrument

us-gaap:OtherLongTermNotesPayable

wtrg:NotesPayableUnderRevolvingCredit


Other
Period End2020-12-31
Value385
Percentage of OtherLongTermNotesPayable100.0

us-gaap:OtherReceivables

us-gaap:OtherReceivables


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5.5945.2854.3924.936.33610119.5939.3588.1053.12
Percentage of OtherReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherRestrictedAssets

us-gaap:OtherRestrictedAssets


Other
Period End2020-12-31
Value3645
Percentage of OtherRestrictedAssets100.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-31
Value895000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities100.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value551000.0403000.0267000.0396000.0613000.0
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities61.60.00.00.00.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2625242823
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5943425065
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent225.2172.0178.8179.5283.3

us-gaap:PostemploymentBenefitsLiabilityNoncurrent

us-gaap:PostemploymentBenefitsLiabilityNoncurrent


Postemployment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value5683919810711069
Percentage of PostemploymentBenefitsLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesAmountOfAllowanceForFundsUsedDuringConstructionEquityCostsCapitalizedOnlyForRateMakingPurposes

us-gaap:PublicUtilitiesAmountOfAllowanceForFundsUsedDuringConstructionEquityCostsCapitalizedOnlyForRateMakingPurposes


Public
Period End2020-12-312019-12-312018-12-312017-12-312013-12-312012-12-312011-12-312010-12-31
Value8.253119.691110.5330.1880.3180.0
Percentage of PublicUtilitiesAmountOfAllowanceForFundsUsedDuringConstructionEquityCostsCapitalizedOnlyForRateMakingPurposes100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1


Public
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value121520242524-20.164-27.466-31.347-33.839
Percentage of PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1 us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus

wtrg:Water, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value-12.215-15.248
Percentage of PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1-100.0-100.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress us-gaap:ProductOrService, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress

wtrg:NaturalGas, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value120
Percentage of PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress100.0

wtrg:Water, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value225214
Percentage of PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress186.70.0

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentEquipment us-gaap:ProductOrService, us-gaap:PropertyPlantAndEquipmentByType, us-gaap:PublicUtilityRegulatedOrUnregulatedStatus

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentEquipment

wtrg:NaturalGas, us-gaap:Land, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value3.872
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment100.0

wtrg:NaturalGas, wtrg:MetersDataProcessingTransportationAndOperatingEquipment, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value580
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment14980.4

wtrg:NaturalGas, wtrg:NaturalGasDistribution, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value1540
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment39782.2

wtrg:NaturalGas, wtrg:NaturalGasGatheringAndProcessing, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value126
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment3256.8

wtrg:NaturalGas, wtrg:NaturalGasStoragePpe, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value60
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment1571.4

wtrg:NaturalGas, wtrg:NaturalGasTransmission, us-gaap:RegulatedOperation


Public
Period End2020-12-31
Value362
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment9361.5

wtrg:Water, us-gaap:Land, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value137156
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment3548.30.0

wtrg:Water, wtrg:MainsAndAccessories, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value38003585
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment98163.20.0

wtrg:Water, wtrg:MetersDataProcessingTransportationAndOperatingEquipment, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value898847
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment23207.80.0

wtrg:Water, wtrg:MiscellaneousPumpingAndPurificationEquipment, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value976904
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment25225.20.0

wtrg:Water, wtrg:OperationsStructuresAndWaterTanks, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value352332
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment9093.30.0

wtrg:Water, wtrg:ServicesHydrantsTreatmentPlantsAndReservoirs, us-gaap:RegulatedOperation


Public
Period End2020-12-312019-12-31
Value24252152
Percentage of PublicUtilitiesPropertyPlantAndEquipmentEquipment<