SJI


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

Table of contents



us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:ComprehensiveIncomeNetOfTax
dei:LegalEntity

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
dei:LegalEntity

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization
dei:LegalEntity

us-gaap:CostOfGoodsAndServicesSold
dei:LegalEntity
us-gaap:ProductOrService

us-gaap:CostOfRevenue

us-gaap:CostsAndExpenses
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
dei:LegalEntity

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

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

us-gaap:InterestExpense
dei:LegalEntity

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

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

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NonoperatingIncomeExpense
dei:LegalEntity

us-gaap:OperatingCostsAndExpenses
dei:LegalEntity

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

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossNetOfTax
dei:LegalEntity

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

us-gaap:RegulatedOperatingRevenue

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

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

us-gaap:UnregulatedOperatingRevenue

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

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

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

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

us-gaap:CashAndCashEquivalentsAtCarryingValue
dei:LegalEntity
dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities

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

us-gaap:InventoryRawMaterialsAndSupplies
dei:LegalEntity

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

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets
dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities
us-gaap:PropertyPlantAndEquipmentNet
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent
dei:LegalEntity
dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities

us-gaap:AccountsPayableCurrent
us-gaap:ConsolidatedEntities

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:DividendsPayableCurrent

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

us-gaap:LongTermDebtCurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiabilityCurrent
dei:LegalEntity

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

us-gaap:TaxesPayableCurrent
dei:LegalEntity

us-gaap:LiabilitiesNoncurrent
dei:LegalEntity

us-gaap:LongTermDebt

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

us-gaap:DeferredIncomeTaxLiabilitiesNet
dei:LegalEntity

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

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities

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

us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

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

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
dei:LegalEntity

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

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

us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

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

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

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

us-gaap:TreasuryStockValue
us-gaap:ConsolidatedEntities

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInOperatingActivities
dei:LegalEntity

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

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

us-gaap:NetCashProvidedByUsedInInvestingActivities
dei:LegalEntity

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:PaymentsToAcquireProductiveAssets
dei:LegalEntity

us-gaap:NetCashProvidedByUsedInFinancingActivities
dei:LegalEntity

us-gaap:ProceedsFromIssuanceOfLongTermDebt
dei:LegalEntity

us-gaap:RepaymentsOfLongTermDebt
dei:LegalEntity

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:DeferredTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits
dei:LegalEntity

us-gaap:DeferredTaxAssetsValuationAllowance

sji:AccountsReceivableAllowanceForCreditLossRegulatoryAssets
dei:LegalEntity
dei:LegalEntity
sji:AdjustmentToAdditionalPaidInCapitalContributionsFromParent
dei:LegalEntity, us-gaap:StatementEquityComponents
dei:LegalEntity, sji:AssetAcquisition
sji:AssetAcquisitionConsiderationTransferred

sji:BusinessCombinationProceedsFromPaymentForWorkingCapitalSettlement
us-gaap:RetirementPlanType
sji:CapitalizedBenefitCosts

sji:CommonStockIssuedOrGrantedUnderStockPlans
us-gaap:StatementEquityComponents
dei:LegalEntity
sji:DeferredIncrementalCostsCARESAct
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RetirementPlanType
sji:DefinedBenefitPlanDeferredCost
dei:LegalEntity, us-gaap:PlanName
sji:DefinedContributionPlanCostsAndCapitalizedAmounts
us-gaap:PlanName
sji:DefinedContributionPlanCostsCapitalized

sji:ExpensesIncludingIncomeTaxes
dei:LegalEntity
dei:LegalEntity, us-gaap:HedgingDesignation
sji:GainLossOnEnergyRelatedDerivativeInstrumentsNotDesignatedAsHedgingInstruments
us-gaap:HedgingDesignation

sji:InvestmentInLongTermReceivables
dei:LegalEntity

sji:LesseeOperatingLeasePercentageRealEstateLeases
dei:LegalEntity
us-gaap:RelatedPartyTransactionsByRelatedParty
sji:LongTermContractForAssetManagementAgreementMinimumAnnualFees
dei:LegalEntity
sji:LongTermContractForPurchaseOfElectricPowerMonthlyFeesPaidToSupplier

sji:MaximumExposureToLossOnAffiliates
us-gaap:RetirementPlanType
sji:NetPeriodicBenefitExpense

sji:NetRepaymentsOfBorrowingsFromLinesOfCredit
dei:LegalEntity

sji:OtherIncomeAndExpenseIncludingIncomeLossFromEquityMethodInvestments
dei:LegalEntity
sji:ScheduleOfRateMatters, sji:TypeOfRecovery, us-gaap:RelatedPartyTransactionsByRelatedParty
sji:PublicUtilitiesAnnualRevenue
dei:LegalEntity
sji:RelatedPartyTransactionsOperatingIncomeExpense
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty

sji:SaleofStockConsiderationReceivedonTransactionGross
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:StatementEquityComponents, us-gaap:SubsidiarySaleOfStock

sji:ShareBasedCompensationCostPreviouslyRecordedReversal

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtSubsequentAdjustments
us-gaap:StatementEquityComponents

us-gaap:AllowanceForDoubtfulAccountsReceivableRecoveries
dei:LegalEntity

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs
dei:LegalEntity
us-gaap:DebtInstrument
us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AssetRetirementObligationAccretionExpense
dei:LegalEntity

us-gaap:AssetRetirementObligationLiabilitiesIncurred
dei:LegalEntity

us-gaap:AssetRetirementObligationLiabilitiesSettled
dei:LegalEntity

us-gaap:AssetRetirementObligationRevisionOfEstimate
dei:LegalEntity
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentPeriodicPayment
us-gaap:TitleOfIndividual
us-gaap:DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued
us-gaap:TitleOfIndividual, us-gaap:AwardType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:Depreciation
dei:LegalEntity

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

us-gaap:DepreciationExpenseOnReclassifiedAssets

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeNonmonetaryNotionalAmountEnergyMeasure
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:Position
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation, us-gaap:Position

us-gaap:DirectOperatingMaintenanceSuppliesCosts
dei:LegalEntity
us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax

us-gaap:DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax

us-gaap:DiscontinuedOperationTaxEffectOfIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriod

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount

us-gaap:EquityMethodInvestmentOtherThanTemporaryImpairment
dei:LegalEntity, us-gaap:LongtermDebtType
us-gaap:ExtinguishmentOfDebtAmount

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
dei:LegalEntity

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
dei:LegalEntity

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseRightOfUseAssetAmortization
us-gaap:HedgingDesignation
us-gaap:GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstruments

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxReconciliationTaxCreditsInvestment
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivablesByBillingStatusType
us-gaap:IncreaseDecreaseInContractWithCustomerAsset
us-gaap:AccountsNotesLoansAndFinancingReceivablesByBillingStatusType
dei:LegalEntity, us-gaap:RegulatoryAgency, us-gaap:RegulatoryAsset
us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities
dei:LegalEntity, us-gaap:RegulatoryAsset
us-gaap:RegulatoryAsset, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:DebtInstrument
us-gaap:InterestExpenseDebtExcludingAmortization

us-gaap:LeaseCost
dei:LegalEntity, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityAverageOutstandingAmount
us-gaap:LongtermDebtType
dei:LegalEntity, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityInterestRateDuringPeriod
us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
dei:LegalEntity
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:LitigationStatus
us-gaap:LitigationSettlementAmountAwardedFromOtherParty
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:LitigationStatus, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:LitigationStatus
us-gaap:LitigationSettlementAmountAwardedToOtherParty
dei:LegalEntity, us-gaap:LitigationCase, us-gaap:LitigationStatus, us-gaap:PublicUtilitiesRegulatoryProceeding

us-gaap:NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
us-gaap:StatementEquityComponents

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax
dei:LegalEntity

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
dei:LegalEntity

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

us-gaap:OtherCostAndExpenseOperating
dei:LegalEntity

us-gaap:PaymentsOfDebtIssuanceCosts
dei:LegalEntity

us-gaap:PaymentsOfStockIssuanceCosts

us-gaap:PaymentsToAcquireAdditionalInterestInSubsidiaries

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireEquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sji:AssetAcquisition
us-gaap:PaymentsToAcquireIntangibleAssets

us-gaap:ProceedsFromCollectionOfAdvanceToAffiliate

us-gaap:ProceedsFromCollectionOfNotesReceivable
dei:LegalEntity
dei:LegalEntity
us-gaap:ProceedsFromContributionsFromParent
us-gaap:DisposalGroupClassification
us-gaap:ProceedsFromDivestitureOfBusinesses
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:RealEstateAndAccumulatedDepreciationDescriptionOfProperty, us-gaap:DisposalGroupClassification, us-gaap:SubsequentEventType

us-gaap:ProceedsFromIssuanceOfCommonStock
dei:LegalEntity
us-gaap:ProceedsFromRepaymentsOfDebt

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProvisionForDoubtfulAccounts
dei:LegalEntity
dei:LegalEntity, us-gaap:RegulatoryAgency
us-gaap:PublicUtilitiesApprovedEquityCapitalStructurePercentage
dei:LegalEntity, sji:CustomerRefundType, sji:ScheduleOfRateMatters
us-gaap:PublicUtilitiesApprovedRateIncreaseDecreaseAmount
dei:LegalEntity, sji:ScheduleOfRateMatters
dei:LegalEntity, sji:ScheduleOfRateMatters, sji:TypeOfRecovery
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryLiability
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding
dei:LegalEntity, us-gaap:RegulatoryAgency
sji:ScheduleOfRateMatters, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RegulatoryAgency, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RegulatoryAgency, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:RegulatoryAgency
us-gaap:PublicUtilitiesApprovedRateIncreaseDecreasePercentage
dei:LegalEntity, us-gaap:RegulatoryAgency
us-gaap:PublicUtilitiesApprovedReturnOnEquityPercentage
dei:LegalEntity, sji:ScheduleOfRateMatters
us-gaap:PublicUtilitiesRequestedRateIncreaseDecreaseAmount
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding
sji:ScheduleOfRateMatters, sji:TypeOfRecovery, us-gaap:RelatedPartyTransactionsByRelatedParty
sji:ScheduleOfRateMatters, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
dei:LegalEntity
dei:LegalEntity, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartiesAmountInCostOfSales
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:RepaymentsOfDebt
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:DebtInstrument
us-gaap:RepaymentsOfSeniorDebt
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
dei:LegalEntity
us-gaap:RevenueFromRelatedParties
dei:LegalEntity, us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:RevenueNotFromContractWithCustomer
dei:LegalEntity

us-gaap:SaleOfStockConsiderationReceivedOnTransaction
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
us-gaap:StatementEquityComponents, us-gaap:SubsidiarySaleOfStock
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
sji:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByDateOfGrant, us-gaap:TitleOfIndividual
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
sji:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByDateOfGrant, us-gaap:TitleOfIndividual
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:TitleOfIndividual, us-gaap:AwardType, us-gaap:Vesting
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1
us-gaap:TitleOfIndividual

us-gaap:TaxesExcludingIncomeAndExciseTaxes
dei:LegalEntity
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:UnrealizedGainLossOnDerivatives
us-gaap:DerivativeInstrumentRisk

us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions

us-gaap:VariableLeaseCost

dei:EntityCommonStockSharesOutstanding
dei:LegalEntity, us-gaap:AssetAcquisition
sji:AssetAcquisitionPercentageOfSharesAcquired

sji:AssetManagementAgreementRecognizableIdentifiableAssetsAcquiredandLiabilitiesAssumedIntangibleAsset

sji:AssetManagementAgreementRecognizableIdentifiableAssetsAcquiredandLiabilitiesAssumedProfitSharingLiabilities
us-gaap:BusinessAcquisition
sji:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill

sji:ContractReceivables
dei:LegalEntity

sji:CustomerDepositsAndCreditBalances
dei:LegalEntity
dei:LegalEntity
sji:DeferredTaxAssetOperatingLossCarryforwardsandTaxCreditCarryforwards

sji:DeferredTaxAssetsInvestmentsandOtherTaxCredits

sji:DeferredTaxAssetsUncollectibles
dei:LegalEntity

sji:DeferredTaxLiabilitiesBudgetBillings
dei:LegalEntity

sji:DeferredTaxLiabilitiesCompensationandBenefits
dei:LegalEntity

sji:DeferredTaxLiabilitiesConservationIncentiveProgram
dei:LegalEntity

sji:DeferredTaxLiabilitiesEnvironmental
dei:LegalEntity
dei:LegalEntity
sji:DeferredTaxLiabilitiesSection461Prepayments
us-gaap:RetirementPlanType
sji:DefinedBenefitPlanAccruedNetBenefitCost

sji:DefinedBenefitPlanEstimatedPercentageofEmployeestobeEntitledtoAnnuityPaymentsUponRetirement
dei:LegalEntity
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
sji:DerivativesEnergyRelatedAssetsFairValue
dei:LegalEntity, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
sji:DerivativesEnergyRelatedLiabilitiesFairValue
dei:LegalEntity, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

sji:DerivativesEnergyRelatedLiabilitiesNoncurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
sji:DerivativesOtherLiabilitiesFairValue
dei:LegalEntity, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
sji:DisposalGroupIncludingDiscontinuedOperationNonutilityPropertyPlantAndEquipmentNet
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
sji:EquityMethodInvestmentsCommittedCapitalContributionLoans

sji:FinanceLeaseLiabilityToBePaidAfterYearFour
us-gaap:GuaranteeObligationsByNature
sji:GuaranteedAmount

sji:InvestmentInAffiliateNetOfGuarantees

sji:InvestmentsRestricted
dei:LegalEntity

sji:LeaseLiability

sji:LeaseRightOfUseAsset

sji:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

sji:LongTermDebtExcludingUnamortizedDiscountPremiumandDebtIssuanceCostsExcludingCurrentMaturities
dei:LegalEntity

sji:NotesReceivableRelatedPartiesCurrentAndNoncurrent
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

sji:NotesReceivableRelatedPartiesCurrentNoncurrent
us-gaap:LongtermDebtType
dei:LegalEntity
sji:NumberOfMegawattsProducedByFuelCellProjects
us-gaap:StatementScenario
sji:NumberOfSolarEnergySitesExpectedToBeSold
dei:LegalEntity, us-gaap:RetirementPlanType
sji:PensionAndOtherPostretirementBenefitPlansRegulatoryAssets
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
sji:PensionAndOtherPostretirementBenefitPlansRegulatoryAssetsNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
sji:PensionAndOtherPostretirementBenefitPlansRegulatoryAssetsNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType

sji:PercentageOfPersonnelRepresentedCollectiveBargainingAgreements
dei:LegalEntity

sji:ProvedAndUnprovedGasPropertyCosts

sji:PublicUtilitiesAndOtherPropertyPlantAndEquipmentNet
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:Range
sji:PublicUtilitiesBudget
sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:Range
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:Range
sji:PublicUtilitiesFundingLevel
sji:ScheduleOfRateMatters

sji:PublicUtilitiesPropertyPlantAndEquipmentPlantInServiceExcludingConstructionWorkInProgress
dei:LegalEntity

sji:PublicUtilitiesPropertyPlantAndEquipmentStorage
dei:LegalEntity
dei:LegalEntity
sji:RegulatoryAssetsDeferredCostsExpectedCreditLossesFromUncollectibles
us-gaap:StatementEquityComponents, us-gaap:SubsequentEventType, us-gaap:SubsidiarySaleOfStock
sji:SaleOfStockQuarterlyCashDistributionPricePerShare
us-gaap:StatementEquityComponents, us-gaap:SubsidiarySaleOfStock
us-gaap:StatementEquityComponents, us-gaap:SubsidiarySaleOfStock
sji:SaleOfStockSharesReceivedForEachStockPurchaseContractHeld

sji:UnbilledRevenues
dei:LegalEntity
dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities
us-gaap:AccountsPayableAndOtherAccruedLiabilities
dei:LegalEntity
us-gaap:AccountsPayableOtherCurrent
us-gaap:ConsolidatedEntities
us-gaap:AccountsPayableRelatedPartiesCurrent

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

us-gaap:AccrualForEnvironmentalLossContingencies
dei:LegalEntity

us-gaap:AccruedEnvironmentalLossContingenciesCurrent
dei:LegalEntity

us-gaap:AccruedEnvironmentalLossContingenciesNoncurrent
dei:LegalEntity

us-gaap:AllowanceForDoubtfulAccountsReceivable
dei:LegalEntity

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
dei:LegalEntity

us-gaap:AssetRetirementObligation
dei:LegalEntity

us-gaap:AssetRetirementObligationsNoncurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
dei:LegalEntity, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage

us-gaap:CapitalizationLongtermDebtAndEquity
dei:LegalEntity
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivablesByBillingStatusType
us-gaap:ContractWithCustomerAssetNetCurrent
us-gaap:AccountsNotesLoansAndFinancingReceivablesByBillingStatusType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCarryingAmount
dei:LegalEntity, sji:DebtInstrumentIssuancePeriod, us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:DebtInstrumentFaceAmount
dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscount
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
us-gaap:LongtermDebtType

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

us-gaap:DeferredIncomeTaxLiabilities
dei:LegalEntity

us-gaap:DeferredTaxAssetsDeferredIncome
dei:LegalEntity

us-gaap:DeferredTaxAssetsGross
dei:LegalEntity

us-gaap:DeferredTaxAssetsInvestments
dei:LegalEntity

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther
dei:LegalEntity

us-gaap:DeferredTaxAssetsStateTaxes
dei:LegalEntity
dei:LegalEntity, us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesDerivatives

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill

us-gaap:DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates

us-gaap:DeferredTaxLiabilitiesOther
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
dei:LegalEntity

us-gaap:DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
dei:LegalEntity, us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DerivativeAssetLiabilityNetMeasurementInput
us-gaap:Range, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssets
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeCollateralObligationToReturnSecurities
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeCollateralRightToReclaimSecurities
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeFairValueOfDerivativeAsset
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk
us-gaap:HedgingDesignation
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
us-gaap:DerivativeInstrumentRisk
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeLiabilities
dei:LegalEntity, us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique

us-gaap:DerivativeLiabilitiesCurrent
dei:LegalEntity

us-gaap:DerivativeLiabilitiesNoncurrent
dei:LegalEntity
dei:LegalEntity, us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeLiabilityFairValueGrossAsset
dei:LegalEntity, us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation
dei:LegalEntity
us-gaap:DueToRelatedPartiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EnergyMarketingContractLiabilitiesCurrent
dei:LegalEntity

us-gaap:EnergyMarketingContractsAssetsCurrent
dei:LegalEntity

us-gaap:EnergyMarketingContractsAssetsNoncurrent
dei:LegalEntity

us-gaap:EnergyRelatedInventoryNaturalGasInStorage
dei:LegalEntity
dei:LegalEntity, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:FairValueConcentrationOfRiskDerivativeFinancialInstrumentsAssets

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
dei:LegalEntity

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset
sji:AssetAcquisition

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
dei:LegalEntity
us-gaap:GasPurchasePayableCurrent

us-gaap:GuaranteeObligationsCurrentCarryingValue

us-gaap:InterestPayableCurrent
dei:LegalEntity
us-gaap:DerivativeInstrumentRisk
us-gaap:InterestRateFairValueHedgeDerivativeAtFairValueNet

us-gaap:Investments
dei:LegalEntity
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
dei:LegalEntity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
dei:LegalEntity
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount
dei:LegalEntity, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
dei:LegalEntity, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
dei:LegalEntity, us-gaap:CreditFacility, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
dei:LegalEntity, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:LitigationReserve
dei:LegalEntity
dei:LegalEntity
us-gaap:LongTermAccountsNotesAndLoansReceivableNetNoncurrent

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

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
dei:LegalEntity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
dei:LegalEntity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
dei:LegalEntity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
dei:LegalEntity

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
dei:LegalEntity
dei:LegalEntity, us-gaap:Range, us-gaap:EnvironmentalRemediationSite, us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LossContingencyEstimateOfPossibleLoss
dei:LegalEntity, us-gaap:Range, us-gaap:LossContingenciesByNatureOfContingency
dei:LegalEntity, sji:AssetAcquisition
us-gaap:MinorityInterestInJointVentures
dei:LegalEntity, us-gaap:AssetAcquisition
sji:AssetAcquisition
dei:LegalEntity, us-gaap:ConsolidatedEntities, us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByParent
dei:LegalEntity, us-gaap:Ownership
dei:LegalEntity, us-gaap:Ownership, us-gaap:AssetAcquisition
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:NotesAndLoansReceivableNetCurrent
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:NotesAndLoansReceivableNetNoncurrent
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:NotesReceivableNet

us-gaap:NotesReceivableRelatedParties
us-gaap:LongtermDebtType
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:NotesReceivableRelatedPartiesCurrent

us-gaap:NotesReceivableRelatedPartiesNoncurrent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
dei:LegalEntity
dei:LegalEntity, us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
sji:ExpirationPeriod, us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthority

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
dei:LegalEntity
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
dei:LegalEntity, us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent
us-gaap:RetirementPlanType

us-gaap:PrepaidTaxes
dei:LegalEntity

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
us-gaap:ConsolidatedEntities

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentCommon
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentDistribution
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentGenerationOrProcessing
dei:LegalEntity
dei:LegalEntity
us-gaap:PublicUtilitiesPropertyPlantAndEquipmentNet
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency
sji:ScheduleOfRateMatters, us-gaap:RegulatoryAgency, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:PublicUtilitiesRegulatoryProceeding, us-gaap:RegulatoryAgency, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService
dei:LegalEntity

us-gaap:PublicUtilitiesPropertyPlantAndEquipmentTransmission
dei:LegalEntity
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ReceivableWithImputedInterestDiscount
dei:LegalEntity, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ReceivableWithImputedInterestNetAmount

us-gaap:RegulatoryAssetsNoncurrent
dei:LegalEntity
dei:LegalEntity
us-gaap:RegulatoryLiabilities
dei:LegalEntity, sji:ScheduleOfRateMatters, us-gaap:RegulatoryLiability
dei:LegalEntity, us-gaap:RegulatoryLiability
us-gaap:RegulatoryLiability, us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:RegulatoryLiabilityNoncurrent
dei:LegalEntity
us-gaap:SubsidiarySaleOfStock
us-gaap:SaleOfStockPricePerShare
sji:DeferredCompensationArrangementWithIndividualShareBasedPaymentsByDateOfGrant, us-gaap:TitleOfIndividual
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:TitleOfIndividual

us-gaap:ShortTermBankLoansAndNotesPayable
dei:LegalEntity
us-gaap:ConsolidatedEntities
sji:ExpirationPeriod, us-gaap:IncomeTaxAuthority
us-gaap:TaxCreditCarryforwardAmount
us-gaap:IncomeTaxAuthority

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

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Liability
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Noncurrent Liabilities
Operating Lease Liability Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Repayments Of Long Term Debt
Shares
Weighted Average Number Of Diluted Shares Outstanding
OperatingLeaseLiability
Operating Lease Liability Current
NonoperatingIncomeExpense
Nonoperating Income Expense
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂█▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁140.557128.215125.74125.735125.733115.555115.493115.491115.488115.486106.883106.883106.88299.51699.43699.43699.43699.43599.34799.34799.34789.04888.70785.90985.598171.0685.41883.10682.682.05681.78879.9779.90879.67279.13477.71276.10475.77475.5375.1574.88674.88274.682NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅█▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▄▄▁▁110.902101.937100.78100.58793.71292.55692.25392.39292.38991.43286.38985.50684.0879.72479.70579.54979.54979.64179.64379.63575.29871.41669.64668.60768.653137.23667.45466.33266.07465.68464.61263.96864.02463.62263.09461.8960.94460.64660.41860.0580.0600740.05998260.01660.00.059950.059826
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▇▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅█▄▄▄▄▄▄▄▄▄▄▄▄▄▄▁▁▄▄▁▁110.902100.845100.59100.58793.71292.44592.1392.39292.38991.33285.50685.50684.0879.59579.54979.54979.54979.51979.47879.47875.29871.12769.4668.60768.467136.79467.30466.33265.92665.5364.51863.96863.89863.51462.9361.72260.78660.49860.23460.0580.0599060.05979859.74659.7460.0597460.059652
us-gaap:EarningsPerShareBasic ▂█▆▄▄▇▅▃▄▇▆▃▁█▄▃▄▅▆▄▄▇▆▄▅▅▆▄▅▆▆▄▄▆▅▄▅▇▆▄▄▇▅▄▅▆-0.871.280.69-0.1-0.031.090.43-0.38-0.140.940.54-0.53-1.121.40.05-0.47-0.10.470.580.12-0.060.960.73-0.180.190.3950.655-0.0650.1450.730.61-0.020.0140.6750.40.03250.170.8940.615-0.08550.10150.86050.4250.0220.14150.5285
us-gaap:EarningsPerShareDiluted ▂█▆▄▄▇▅▃▄▇▆▃▁█▄▃▄▅▆▄▄▇▆▄▅▅▆▄▅▆▆▄▄▆▅▄▅▇▆▄▄▆▅▄▅▆-0.871.260.69-0.1-0.031.090.43-0.38-0.140.940.53-0.53-1.121.40.05-0.47-0.10.470.580.12-0.060.950.73-0.180.190.3950.65-0.0650.1450.730.61-0.020.0140.6740.40.03250.16950.89150.61-0.08550.1010.85750.4250.0220.1410.527
us-gaap:IncomeLossFromContinuingOperationsPerBasicShare ▂▇▅▃▄▆▅▃▃▆▅▂▁▇▄▃▃▅▅▄▄▆▅▃▄▆▇▃▄▇▇▄▄▇▆▄▅█▇▃▄█▆▄▄▆-8.7e-071.28e-066.9e-07-1.0000000000000001e-07-3e-081.0900000000000002e-064.3e-07-3.8e-07-1.4e-079.399999999999999e-075.4e-07-5.3e-07-1.12e-061.4e-065.0000000000000004e-08-4.6999999999999995e-07-1.0000000000000001e-074.6999999999999995e-075.8e-071.2e-07-6e-089.6e-077.3e-07-1.8e-071.9e-077.900000000000001e-071.31e-06-1.3e-072.9e-071.47e-061.22e-06-4e-082.9e-081.365e-068.100000000000001e-077e-083.5599999999999996e-071.792e-061.23e-06-1.7299999999999997e-072.0899999999999998e-071.734e-068.6e-074.8e-082.86e-071.058e-06
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare ▂▇▅▃▄▆▅▃▃▆▅▂▁▇▄▃▃▅▅▄▄▆▅▃▄▆▇▃▄▇▇▄▄▇▆▄▅█▇▃▄█▆▄▄▆-8.7e-071.26e-066.9e-07-1.0000000000000001e-07-3e-081.0900000000000002e-064.3e-07-3.8e-07-1.4e-079.399999999999999e-075.3e-07-5.3e-07-1.12e-061.4e-065.0000000000000004e-08-4.6999999999999995e-07-1.0000000000000001e-074.6999999999999995e-075.8e-071.2e-07-6e-089.499999999999999e-077.3e-07-1.8e-071.9e-077.900000000000001e-071.3e-06-1.3e-072.9e-071.47e-061.22e-06-4e-082.9e-081.362e-068.100000000000001e-077e-083.55e-071.788e-061.22e-06-1.7299999999999997e-072.0799999999999998e-071.728e-068.6e-074.8e-082.8499999999999997e-071.0549999999999999e-06
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 COGS Ratio dei:LegalEntity sji:SouthJerseyGasCompany▂▇▅▁▂▇▅▁▁█▅▁▂▇91.215251.399177.72166.1987.182240.694172.72162.03962.268272.198180.36956.37176.801234.459NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Cost Ratio dei:LegalEntity sji:SouthJerseyGasCompany▂▇▅▁▂▇▅▁▁█▅▁▂▇▅▁▂▆▄▁▁▅91.215251.399177.72166.1987.182240.694172.72162.03962.268272.198180.36956.37176.801234.459170.43466.75583.251196.814142.50262.02568.762187.766NANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin dei:LegalEntity sji:SouthJerseyGasCompany▂▇▅▁▂▇▅▁▁█▅▁▂▇▅▁▂▆▄▁▁▅91.215251.399177.72166.1987.182240.694172.72162.03962.268272.198180.36956.37176.801234.459170.43466.75583.251196.814142.50262.02568.762187.766NANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin dei:LegalEntity sji:SouthJerseyGasCompany▂▇▅▁▂▇▅▁▁█91.215251.399177.72166.1987.182240.694172.72162.03962.268272.198NA56.37176.801234.459NA66.75583.251196.814NA62.02568.762187.766NANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin dei:LegalEntity sji:SouthJerseyGasCompany▂▇▅▁▂▇▅▁▁█▅▁▂▇▅▁▂▆▄▁▁▅91.215251.399177.72166.1987.182240.694172.72162.03962.268272.198180.36956.37176.801234.459170.43466.75583.251196.814142.50262.02568.762187.766NANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:RetailServicesSegment█▁4.1263.896NANA10.81613.083NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:WholesaleEnergyAndRetailServicesSegments▁█163.881265.806NANA112.342141.527NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:WholesaleEnergyOperationsSegment▁█159.755261.91NANA101.526128.444NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:RenewablesAndDecarbonizationSegments▁█4.2056.423NANA2.1546.988NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:RenewablesSegment▁█4.2056.423NANA2.1546.988NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:OnSiteEnergyProductionAndApplianceServiceOperations,sji:ApplianceServiceOperationsNANA0.4930.491NANA0.5130.514NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:OnSiteEnergyProductionAndApplianceServiceOperations,sji:OnSiteEnergyProductionNANANA6.317NANANA11.98NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:ELKUtilityOperationsSegmentNANA0.0010.2851.3893.1182.7390.892NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:ETGUtilityOperationsSegment▂█▅▁▃▇▅▁53.481157.545109.88937.50357.843144.157109.48630.619NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGETGAndELKUtilitiesOperationsSegmentNANA287.611103.978NANA284.94693.55NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGETGAndELKUtilitiesOperationsSegments▁█144.696408.944NANA146.414387.969NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGUtilityOperationsSegment▂█▅▁▂█▅▁91.215251.399177.72166.1987.182240.694172.72162.039NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:CorporateAndServicesSegment▃▄█▂▃▄▃▁12.04613.79318.57411.48812.56413.34113.07310.252NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▇▆▆▇█▇▆▆█▅▅▅▆▆▃▆▆▆▅▅▅▅▁▅▅▅▂▅▅▅▅▅▅▅▅▄▅▄▄▄▅▄▄▄▄1.6071.2511.2161.511.6361.3891.1191.1611.7830.8710.7050.6541.1951.2050.2131.2471.2691.2380.770.9140.9190.904-0.590.7670.610.894-0.270.6730.6740.6690.6720.6970.6940.7010.8980.5760.6940.5920.4910.5220.7380.5410.4310.4540.468NA
us-gaap:ComprehensiveIncomeNetOfTax ▁█▆▄▄▇▅▃-96.82128.60663.359-10.393-2.631101.04932.996-34.796NANANANANANANANANANANANA-4.72368.169NA-12.84413.37353.578NA-4.889.75948.008NA-1.1590.95347.672NA2.64910.10352.33431.781-5.7646.32650.32223.6831.177.69531.761
 us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity sji:SouthJerseyGasCompanyNANANA-9.534NANA22.747-11.595NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▁█0.0880.129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▁█-96.732128.735NANA-2.631101.04932.996-34.796-13.39185.64556.572-45.677-93.811111.249NA-37.586-7.65239.23242.6449.838-4.72368.16956.759-12.844NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity sji:SouthJerseyGasCompany▁█6.32183.626NANA3.68670.5322.747-11.5951.98468.73927.224-8.9681.57766.756NA-5.7642.27346.485NA-3.275.05344.429NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization ▁█62.88170.103NANA62.05371.951NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold NANA269.185176.029147.653266.068273.873190.366165.341402.387393.432209.874145.796283.068210.585140.598179.684287.143186.684142.98898.34152.975127.56699.12490.945241.707153.79476.07378.947228.138139.70389.1687.827152.301120.86670.54969.519156.868112.759106.655109.358216.22198.319124.813100.447231.244
 us-gaap:CostOfGoodsAndServicesSold dei:LegalEntity sji:SouthJerseyGasCompany▂▅▄▂▂▆▅▂▁█▆▂▂▆18.71174.53754.60720.57525.54680.53470.54219.2682.654118.8884.38316.07919.37989.808NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService sji:Nonutility▄█▅▃▁▂▄▄168.209245.061182.258146.752102.089130.742154.211163.914NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService sji:Utility▂▇▅▂▃█▇▂▁33.286126.51386.92729.27745.564135.326119.66226.45216.721NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfRevenue NANA269.185176.029147.653266.068273.873190.366165.341402.387393.432209.874145.796283.068210.585168.815179.684287.143186.684142.98898.34152.975127.56699.12490.945241.707153.79476.07378.947228.138139.70389.1687.827152.301120.86670.54969.519156.868112.759106.655109.358216.22198.319124.813100.447231.244
us-gaap:CostsAndExpenses ▄█▆▄▃▆▆▄▄██▅▅▆▅▄▃▅▄▃▂▃▂▂▂▄▃▁▁▄▂▁▁▃▂▁▁▃▂▂▂▄▃▂▁▄300.219477.472380.995270.043239.773368.35387.334280.228258.068502.745499.584341.072335.862364.075349.195282.382248.938358.143259.562206.492162.388218.782192.607156.115147.37306.581215.646126.54129.516287.691190.935134.014133.185203.652171.37112.032111.656201.324155.273144.767148.038258.875241.562160.13136.23270.654
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▄█▆▃▄▇▅▃▄▇▅▃▁█▄▃▄▅▆▄▄▇▅▄▅▆▅▄▄▅▅▄▄▅▅▄▄▆▅▄▄▆▅▄▄▅-15.984167.43775.474-31.113-4.773132.07949.264-47.264-19.539108.47557.033-63.72-127.119146.659-13.946-63.569-13.22656.60664.9167.458-11.854107.29659.784-20.91925.90670.01158.436-7.4621.09457.79429.397-7.399-11.34851.1425.085-1.6778.7269.88840.325-10.80210.0173.63839.318-5.09110.23354.687
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments dei:LegalEntity sji:SouthJerseyGasCompany▂█▅▁▂▇▄▁▂▇▄▁▂▇▄▁▂▆▄▂▂▆8.342110.73255.569-12.8364.89795.75340.492-15.3512.64792.42830.522-11.7942.05188.58347.63-9.4593.69776.38935.453-5.3226.45871.822NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest ▁█▆▄▄▇▅▃▄▇▅▃▁▇-96.66128.79869.119-10.344-2.578101.139.54-34.746-13.30485.69946.032-45.642-93.793111.306NA-37.548-7.61237.74746.0089.664-4.79868.18750.948-12.53213.34153.85343.992-4.2769.70148.21139.357-1.2210.91643.33725.5692.16410.83254.21136.986-5.2036.24551.83125.7351.4418.54131.568
us-gaap:IncomeTaxExpenseBenefit ▄█▅▂▄▇▅▃▄▆▅▂▁▇▂▂▄▆▆▄▃█▄▃▄▆▅▃▃▅▃▄▃▅▄▄▄▆▄▃▄▆▅▃▄▆-4.70241.7698.939-19.467-0.17833.3711.683-10.925-4.64624.94912.767-16.649-31.97236.415-16.498-24.765-5.54421.8719.2662.807-7.18939.267-1.006-10.968-3.27916.61310.415-8.325-9.5111.869-9.621-5.533-11.6327.772-0.757-2.576-1.07215.8843.022-6.0343.00422.5114.002-7.4270.26521.971
 us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity sji:SouthJerseyGasCompany▂▇▄▁▂▇▄▁▂▇▃▁▂▆▆▁▂█▄▁▂▇2.02927.11412.167-3.2931.21925.23112.201-3.7470.67123.6976.913-2.8180.48221.83618.046-3.6881.43129.91112.554-2.0071.41527.404NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:RetailServicesSegment▁█0.1220.172NANA0.156-0.029NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:WholesaleEnergyAndRetailServicesSegments▁█-1.6545.084NANA1.8751.977NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:WholesaleEnergyOperationsSegment▁█-1.7764.912NANA1.7192.006NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:DecarbonizationSegment▁█-0.0730.197NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:RenewablesAndDecarbonizationSegments▁█-0.7040.661NANA-0.7551.049NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:RenewablesSegment▁█-0.6310.464NANA-0.7551.049NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:OnSiteEnergyProductionAndApplianceServiceOperations,sji:ApplianceServiceOperationsNANA0.2150.116NANA0.1820.142NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:OnSiteEnergyProductionAndApplianceServiceOperations,sji:OnSiteEnergyProductionNANANA-11.191NANANA0.242NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:OnSiteEnergyProductionAndApplianceServiceOperations,sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegmentNANA-13.02-11.075NANA-3.0110.384NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:ELKUtilityOperationsSegmentNANA0.0-0.0040.0540.1360.046-0.054NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:ETGUtilityOperationsSegment▂█▄▁▂▇▄▁-0.96512.1534.596-2.475-0.27710.6213.733-2.065NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGETGAndELKUtilitiesOperationsSegmentNANA16.763-5.772NANA15.981-5.866NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGETGAndELKUtilitiesOperationsSegments▁█1.06439.267NANA0.99635.988NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGUtilityOperationsSegment▂█▅▁▂█▅▁2.02927.11412.167-3.2931.21925.23112.202-3.747NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:WholesaleEnergyAndRetailElectricOperations,sji:RetailElectricOperationsNANANA-0.233NANANA0.004NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:WholesaleEnergyAndRetailElectricOperations,sji:WholesaleEnergyAndRetailElectricOperationsSegmentNANANA0.625NANANA-2.126NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:WholesaleEnergyAndRetailElectricOperations,sji:WholesaleEnergyOperationsNANANA0.858NANANA-2.13NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:CorporateAndServicesSegment▄▄█▄▅▁▂▄-3.379-3.1820.202-3.187-2.207-5.615-4.776-3.299NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:MidstreamSegment▇▄▅▄▁▇▅█-0.029-0.061-0.043-0.058-0.087-0.029-0.052-0.018NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense ██▇▇▇█▇▇▇▇▇▇▅▄▄▃▃▄▂▂▂▃▂▂▂▂▃▂▂▂▂▁▁▂▁▂▂▂▂▂▂▂▂▂▂▂31.18531.45929.64727.76228.58932.53628.53328.85728.43428.65330.22926.53419.56113.97215.72810.56710.97916.7456.7057.3558.2299.167.448.1077.4748.6018.8626.7686.8467.0846.3044.3933.424.7082.3175.9815.1955.4935.6216.2426.2345.9814.996.2765.6644.966
us-gaap:InterestIncomeExpenseNet ▁▁▂▃▂▁▂▂▂▂▂▃▅▇▆██▆-31.185-31.459-29.647-27.762-28.589-32.536-28.533-28.857-28.434-28.653-30.229-26.534-19.561-13.972-15.728-10.567-10.979-16.745NA-7.355-8.229-9.16NA-8.107NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems us-gaap:IntersegmentElimination▂▂▂▁▂▂▃▄▅▅▆██▇▅▆▆▄1.8881.9751.8721.3531.8452.2322.7033.2553.4393.7554.4765.5125.4884.6453.9154.3674.1143.332NA2.7172.7022.737NA2.142NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems us-gaap:OperatingSegments▂▁▂▃▃▁▂▂▂▂▁▂▄▇▆██▆-33.073-33.434-31.519-29.115-30.434-34.768-31.236-32.112-31.873-32.408-34.705-32.046-25.049-18.617-19.643-14.934-15.093-20.077NA-10.072-10.931-11.897NA-10.249NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:RetailServicesSegment-0.099NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyManagement,sji:WholesaleEnergyAndRetailServicesSegments0.099NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:DecarbonizationSegment█▁-0.273-0.294NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:RenewablesAndDecarbonizationSegments█▁-1.478-1.502NANA-1.095-1.602NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:EnergyProduction,sji:RenewablesSegment█▁-1.205-1.208NANA-1.095-1.602NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:OnSiteEnergyProductionAndApplianceServiceOperations,sji:OnSiteEnergyProductionNANANA-0.277NANANA-2.097NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:ELKUtilityOperationsSegmentNANA0.0-0.002-0.007-0.0120.007-0.004NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:ETGUtilityOperationsSegment▅▁▆▇▅███-7.754-8.693-7.676-7.398-7.778-7.145-7.246-7.165NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGETGAndELKUtilitiesOperationsSegmentNANA-17.232-15.671NANA-15.309-15.009NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGETGAndELKUtilitiesOperationsSegments█▁-17.367-18.418NANA-15.804-14.699NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:UtilityOperations,sji:SJGUtilityOperationsSegment▁▁▂▆▆█▆▇-9.613-9.725-9.556-8.271-8.019-7.542-8.07-7.84NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:CorporateAndServicesSegment▇███▇▁▇▅-13.495-12.843-12.584-12.49-12.955-17.887-13.22-14.433NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,sji:MidstreamSegment▄▁▁▁██▇█-0.634-0.671-0.676-0.677-0.58-0.58-0.59-0.573NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▁█▆▄▄▇▅▃▄▇▅▃▁▇▄▃▄▅▅▄▄▆▆▄▄▆▅▄▄▅▅▄▄▅▅▄▄▆▅▄▄▆▅▄▄▅-96.828128.59869.084-10.402-2.639101.04139.484-34.805-13.39985.63745.927-45.685-93.819111.244.045-37.593-7.65937.71745.9339.635-4.82768.06950.886-12.62313.26753.57743.923-4.3969.62147.89839.26-1.4210.88842.86625.1862.01310.33454.07536.902-5.1386.07951.44825.3651.3088.4431.539
 us-gaap:NetIncomeLoss dei:LegalEntity sji:SouthJerseyGasCompanyNA83.61843.402-9.5433.67870.52228.291-11.6041.97668.73123.609-8.9761.56966.74729.584-5.7712.26646.47822.899-3.3155.04344.418NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:StatementEquityComponents sji:SouthJerseyGasCompany,us-gaap:RetainedEarningsNANANA-9.5433.67870.522NA-11.6041.97668.731NA-8.9761.56966.747NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNANANA-10.402-2.639101.041NA-34.805-13.39985.637NA-45.685-93.819111.24NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▁█0.0880.129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NonoperatingIncomeExpense ▆▅▃▇▆▂▅▄▃▅▁▄▄▅▇▅▅▇▄▅▆▅▅▅▅▅▄▆▆▅▅▅▅▆▄▆▆▄▅▅▆█▅▄▃▄3.5922.0680.3585.1433.625-1.1471.940.6180.0292.575-2.7371.4060.9742.7615.2392.2532.3175.6651.2022.2234.3612.2031.9882.2413.042.2411.8473.4194.1852.3682.2452.22.6653.8691.2144.3593.6581.8732.6792.5863.8056.5722.4010.6480.4791.024
us-gaap:OperatingCostsAndExpenses NANA138.767119.046118.073130.956138.641116.056118.444124.794133.121131.899208.38492.54152.99122.61778.68185.67577.85869.4171.03473.04271.14863.86762.63471.27969.38456.03956.17464.68454.67447.78947.11452.22650.07245.9745.46746.07145.0442.68142.79343.33644.55339.95139.49839.504
 us-gaap:OperatingCostsAndExpenses dei:LegalEntity sji:SouthJerseyGasCompanyNANA68.62458.77258.85361.44262.41257.77156.14160.83263.38653.23955.4857.32354.87247.45646.65648.32747.88641.30342.82646.45NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▄█▆▃▄▇▅▃▄▇▆▃▁▇▃▂▃▅▅▄▃▆▅▃▄▅▅▃▄▅▄▃▃▅▄▃▄▅▄▃▄▅▄▄▄▅11.609196.828104.763-8.49420.191165.76275.857-19.0258.866134.55389.999-38.592-108.532157.87-3.457-55.255-4.56467.68670.41912.59-7.986114.25365.236-15.05330.3476.37165.451-4.1133.75562.5133.456-5.206-10.59351.97926.188-0.05510.25773.50843.267-7.14612.43973.04741.9070.53715.41858.629
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax NANANA0.0090.0080.0080.010.0090.0080.008NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax dei:LegalEntity sji:SouthJerseyGasCompanyNANANA0.0090.0080.0080.010.0090.0080.008NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▄▄0.0080.008NANA0.0080.008-6.4880.0090.0080.00810.6450.0080.0080.009-10.9130.0070.0071.515-3.2890.2030.1040.15.873-0.2210.1060.001-9.262-0.4840.1380.115.2120.2620.0654.806-1.3310.636-0.231-1.741NANANANANANANANA
us-gaap:ProfitLoss ▁█▆▄▄▇▅▃▄▇▅▃▁▇-96.74128.72769.042-10.402-2.639101.04139.484-34.805-13.39985.63745.927-45.685-93.819111.24NA-37.593-7.65937.71745.9339.635-4.82768.06950.886-12.62313.26753.57743.923-4.3969.62147.89839.26-1.4210.88842.86625.1862.01310.33454.07536.902-5.1386.07951.44825.3651.3088.4431.539
 us-gaap:ProfitLoss dei:LegalEntity sji:SouthJerseyGasCompany▂█▅▁▂▇▄▁▂▇6.31383.61843.402-9.5433.67870.52228.291-11.6041.97668.731NA-8.9761.56966.747NA-5.7712.26646.478NA-3.3155.04344.418NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss dei:LegalEntity,us-gaap:StatementEquityComponents sji:SouthJerseyGasCompany,us-gaap:RetainedEarnings▁█6.31383.618NANA3.67870.522NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterest▁█0.0880.129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:Parent▁█-96.828128.598NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-96.828128.598NANA-2.639101.041NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RegulatedOperatingRevenue ▂█▅▁▂█▅▁▁144.27402.616282.318103.383145.846386.881283.31992.377106.832NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▄█▅▃▃▅▅▃▂▆▆▃▂▅▄▂▂▄▃▂▁▃▃▁▂▄▃▁▁▄▂▁▁▃▂▁▁▃▂▁▂▃▃▂▁▃396.682762.283485.758315.148274.714476.0463.191268.8231.8606.677589.583314.5201.9444.0345.738227.127244.374425.829329.981219.082154.402333.035257.844141.062177.71382.952281.097122.427133.271350.201224.39128.808122.592255.631197.558111.977121.913274.832198.54137.621160.477331.922283.469160.667151.648329.283
us-gaap:Revenues ▃█▆▃▃▆▅▃▃█▇▃▂▆▄▂▃▅▄▂▂▄▃▁▂▄▃▁▁▄▂▁▁▃▂▁▁▃▂▁▂▄▃▂▁▄311.828674.3485.758261.549259.964534.112463.191261.203266.934637.298589.583302.48227.33521.945345.738227.127244.374425.829329.981219.082154.402333.035257.844141.062177.71382.952281.097122.427133.271350.201224.39128.808122.592255.631197.558111.977121.913274.832198.54137.621160.477331.922283.469160.667151.648329.283
us-gaap:UnregulatedOperatingRevenue ▄▇▅▄▃▃▄▄▄▆█▅▄▇▄▄▄▆▅▄▂▄▃▂▂▃▃▁▁▃▂▁▁▂▁▁▁▂▂▂▂▄▃▂▂167.558271.684203.44158.166114.118147.231179.872168.826160.102222.952311.717217.002151.727290.177176.436161.654162.436230.06189.087158.09986.129149.366128.41283.555102.416116.422120.33361.67164.368139.87278.46469.50656.55281.9868.99757.97862.85795.6390.36579.41395.507157.533128.143103.82890.463NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ███▇▇▇▇▇▇▇▇▇▆▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁6833.1096714.5086689.1486308.9236216.9546294.496365.346130.0536028.2625863.3625956.5775914.5225509.4973890.083865.0863740.0663741.863747.3523730.5673557.1163522.5813493.9843480.93399.5083378.9463376.7223349.4253043.6833006.5383019.8012924.8552707.9952654.4972628.2712631.442405.2792325.9912260.3752247.512083.0262061.5792019.1332076.615NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▇▇▇▇▇▇▇▆▄▄▄▄▄▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁6833.1096714.5086689.1486308.9236216.9546294.496365.346130.0536028.2625863.3625956.5775914.5225509.4973890.083865.0863740.0663741.863747.3523730.5673557.1163522.5813493.9843480.93399.5083378.9463376.7223349.4253043.6833006.5383019.8012924.8552707.9952654.4972628.2712631.442405.2792325.9912260.3752247.512083.0262061.5792019.1332076.615NANANA
us-gaap:StockholdersEquity █▃▁1887.3991737.1181660.881NA1666.3291497.2831423.7851416.7871476.4721514.5541267.0221234.8321303.7171281.4971192.409NANANA1289.24NA1277.5471093.4421037.539946.828969.977971.485932.432863.974871.894865.042827.0757.477770.593777.791736.214695.796672.75667.792624.114595.473606.27610.081570.097NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AssetsCurrent ▂▂▂▁▁▂▂▁▁▂▂▂█▁▁▁▁▁▂▁▁▁▁▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁527.018488.915506.828354.827422.77462.296652.508405.096428.96520.707663.192737.3192424.536413.506438.993323.463356.462436.628473.313357.764375.757396.11431.274478.934528.125580.158566.697425.681474.776551.217482.898365.017393.007441.618394.837323.835304.446294.563340.609326.962360.024348.749423.837NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue █▃▄▂▂▂▁▁▂▂▃▁▃▁▂▂▂▂▂▁▁▁▁▁▁▂▁▁▂▂▁▁▁▁▁▁▁▁▂▁▁▁▁▁▁▁87.89930.38634.04510.1037.26710.3396.4174.60212.19310.3630.033.31422.426.3127.81913.68110.12215.04818.2826.9414.164.253.8772.0583.217.2144.1713.7837.3978.1713.8184.3942.261.3424.6384.1741.6333.5477.5382.6110.8223.3082.3632.1854.1654.493
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁▁▁▁▁▁▁▁▁▁▁▁█▁▁▁▁▁▁▁▁87.93331.86841.83110.30218.66932.03328.38120.87331.21218.00931.67913.3161773.46423.02539.69519.32611.96417.91331.9150.7442.337NA52.635NANANA69.622NANANANANANANANANANANANANANANANANANANA
 us-gaap:AccountsReceivableNetCurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA0.043NANANA0.057NANANA0.038NANANA0.052NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InventoryRawMaterialsAndSupplies ▁▂▃▁▁▁▁▂▂▂▂▅▅▅▅███████▆▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▃▄▄▅▄1.4791.7492.5611.0611.1391.1461.1641.7981.7511.7441.7434.5744.24.2334.2396.5946.9656.9166.7536.7986.8156.7625.0881.9372.1232.1122.1252.22.8042.8512.7982.7582.6472.6092.6182.7292.8882.9182.7943.6563.8794.0373.796NANANA
us-gaap:OtherAssetsCurrent ▃▃▅▆▇▆▇▇▆▅▄▄▃▅▄▅▅▅▅▆▆█▇▄▄▄▃▃▃▄▂▃▂▂▁▂▂▂▁▂▂▂▁21.48723.14829.08138.08241.38238.84843.49243.15236.05633.80726.54826.70319.90729.60228.24733.93133.8731.9131.36934.89238.9346.86340.16727.90426.89725.45318.68621.75820.36525.24817.91519.62918.10315.90311.83315.76813.39614.29513.28717.12814.29214.40410.714NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA147.76488.91129.08626.57125.991151.826151.628152.27152.232161.25171.983745.826741.027780.131824.775821.23821.9796.135792.256784.495785.646691.565654.129626.875622.079536.081512.648495.433486.332407.11351.091331.699328.638244.834231.968225.4221.051185.634185.496176.678169.77NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType sji:FuelCellAssetsNANA80.546NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType sji:SolarAssetsNANA40.38NANANA0.0NANANA0.0NANANA582.379NANANA652.8NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:PropertyPlantAndEquipmentOtherTypesNANA26.838NANANA25.991NANANA26.004NANANA33.034NANANA44.9NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA35.113.38913.70914.20213.80756.03754.84553.99252.62949.88848.954205.23194.913183.475173.009161.31151.084139.971128.574117.737108.307100.21892.19584.52477.34570.61964.32957.96852.00947.60943.58939.42336.20834.25131.60829.15726.68725.26825.82424.45723.319NANANA
us-gaap:AmortizationOfIntangibleAssets ██▄▄▁▁████1.51.51.41.41.31.31.51.51.51.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity,sji:AssetAcquisition,us-gaap:ConsolidatedEntities sji:MarinaEnergyLlc,sji:Annadale,srt:SubsidiariesNANA80.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity,us-gaap:ConsolidatedEntities sji:MarinaEnergyLlc,srt:SubsidiariesNANANA58.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities srt:ParentCompanyNANA2958.076NANANA2558.155NANANA2458.68NANANA1209.308NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ████▇▇▇▇▇███▁▁▁▁▁▁▁▁▁▁▁706.96706.96706.96706.96702.07702.07702.07705.707703.864734.607734.6759.8263.5783.5783.5784.8384.8384.84.8388.1398.1398.1398.88NANANA0.0NANANANANANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▃▃▄▂▁▂▂██16.11815.70117.25814.35711.22712.54713.86726.025.1NA28.1NANANA12.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset 6.6NA1.9291.6NANA1.9NA2.72.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent █▇▇▆▅▅▆▆▆▆▆▆▅▅▅▅▅▅▄▃▃▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▁▁153.116137.622143.65115.735107.943106.494111.282116.837116.231115.153116.119124.22596.754100.4898.42692.84691.60191.71683.42967.39266.3565.95964.57562.9361.34261.60761.12460.94560.48260.08660.03657.64156.86753.89852.96452.13645.46442.32441.76742.3538.66132.29729.644NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccountsPayableCurrent ▄▄▄▂▂▃▄▄▅▆█▇▅▄▅▃▄▅▄▂▂▂▃▃▃▄▅▃▄▅▄▃▃▄▃▁▁▁▂▂▂▂▂226.108218.078256.589162.845160.392187.647232.242245.813288.881332.876410.463383.465262.09259.684284.899208.021246.688272.673243.669141.096166.418151.006186.4189.122193.719221.23272.998211.602242.71295.73259.757200.466192.381217.517193.331111.071109.882128.203153.666131.361160.014154.381165.197NANANA
us-gaap:ContractWithCustomerLiabilityCurrent ▄▃▃▂▂▂▁▁███▃0.6530.5140.4790.3210.3470.1860.00.01.7721.7721.7720.407NANA0.259NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DividendsPayableCurrent █▁34.00730.453NA29.67727.27727.2710.026.56326.56226.5620.023.94223.94122.3340.021.67721.67721.750.020.96220.96218.790.017.26817.20517.1910.015.70715.61115.510.014.15514.16514.1020.012.51112.25312.20.010.97210.93310.9330.0NANANA
us-gaap:LiabilitiesCurrent ▁▂▃▃▃▅▅▅▅▄▅█▇▃▂▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▁▁▁▁▁▁▁▂589.601752.6991163.6321103.705926.2041565.6791731.8951607.751646.0681205.0551580.8382471.1542114.818924.18883.082684.17734.119681.023952.624812.397758.433698.003832.476806.961834.55821.621850.185604.128701.414812.723764.973709.676632.339597.005651.844552.845531.841582.792587.971501.849472.743456.809640.524NANANA
us-gaap:LongTermDebtCurrent ▁▂▂▂▂▃▃▃▃▃▄█▇▂▁▁▁▁▂▂▂▁▁▁▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂90.976142.801142.801142.809117.909470.409467.909338.909478.909333.9733.9091482.7341368.809263.80963.80910.90915.90931.909231.909231.909244.60528.60429.45477.90985.909149.909149.90974.085.021.021.021.025.025.025.025.00.00.02.1872.18725.050.0111.4NANANA
us-gaap:OperatingLeaseLiabilityCurrent NANA0.6190.5810.7590.9611.171.3261.5191.644NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseLiabilityCurrent dei:LegalEntity sji:SouthJerseyGasCompanyNANANA0.0490.080.1130.1460.1660.1690.178NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesCurrent ██▅▄▅▆▇▆▅▅▇▄▄▂▃▂▂▂▃▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▂▁▁▁▂40.44340.44427.66522.56426.56330.22335.48629.52426.76627.64336.10222.05321.3549.78515.868.4811.5218.63515.2195.8496.0537.22211.5967.2876.2617.58412.486.5946.6086.8589.215.8347.1367.34211.1275.8585.9547.07510.4985.1255.1945.6649.043NANANA
us-gaap:TaxesPayableCurrent ▄█▃▃▂▅▁▁▁▆▃▂▁▄▁▁▁▃▁▂▁▂▁▁▂▅▁▁▁▅▂▁▁▅▁▁▁▃▂▁▂█▄8.15914.566.0254.8393.0289.3112.2352.5672.67110.7155.8813.9242.5296.8142.9322.4672.3586.2882.0823.1342.8323.7372.3362.3533.019.1972.3282.42.4119.6773.2342.8142.4628.9182.1562.0942.0686.1023.1682.8963.19913.7616.709NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LiabilitiesNoncurrent ██▇▇▇██▇▇▆▆▅▃▃▃▂▂▃▃▃▂▂▂▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁1171.3311155.1731082.241041.6331058.0431164.3821139.5741082.7361107.1711025.851001.854927.536687.16709.654666.596654.227661.812679.133680.698668.636655.512655.571604.491708.328714.928724.125707.317640.181627.83631.636652.482660.442650.165652.075641.982590.238580.0583.391611.212561.491556.166550.843525.994NANANA
us-gaap:LongTermDebt ██▇▆▆▆▆▅▅▆▇▆▆▂▂▂▁▁▁▁▁▁▁▁▁3268.3293206.1952950.9462674.4412680.02540.02568.8552360.02280.02450.02867.7642760.02770.01238.61204.1731191.21082.61111.21047.4821040.61075.71075.61035.8481015.3945.4NA1009.41009.4890.4731.4701.4601.4626.4626.4626.4591.4541.4426.4426.4NANANA451.4NANANA
us-gaap:LongTermDebtNoncurrent ██▇▆▆▅▅▅▅▅▅▃▄▃▃▃▃▃▂▂▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁3177.3533063.3942776.42531.6322566.3782067.1462070.0862022.781798.5512117.9032106.8631281.01403.802974.7491122.9991180.3191066.681079.298808.005808.704831.0891046.9681006.394937.391859.491859.491859.491935.4805.4710.4680.4580.4601.4601.4601.4566.4541.4426.4424.213424.213426.4401.4340.0NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ██▅▃▄▄▂▁181.215188.8149.534116.321134.611133.45292.16680.736NANA85.836NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent ███▆▆▆▆▆▆▆▆▆▅▅▅▄▄▄▄▃▃▃▃▅▅▅▆▁▁▁▁▅▅▄▅▄▄▄▆▃▃▂▂130.615132.199135.023114.764114.422114.101114.055112.061111.134110.049110.112114.765105.789104.262101.54491.70889.47487.65495.23581.96679.82177.7276.068103.046100.35898.232115.37361.060.29758.77657.3799.71297.28394.71105.16891.76589.07386.153109.02177.59875.56373.63971.675NANANA
us-gaap:MinorityInterest █▅▅▁7.4256.1245.9954.236NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA0.0NANANA
us-gaap:OtherLiabilitiesNoncurrent █▅▁▂▁▁▂▂▂▂▃▃▃▁▁▁▁▁▁▂▂▂▂▁▁▁▂▁▁▂▂▂▂▂▂▁▁▁▁▂▂▂▂88.54253.83512.47815.28711.4214.04717.73819.35421.7825.30726.64528.99528.7599.099.4369.4479.62810.05110.58420.40521.35122.32322.9913.17213.51814.1414.81514.44614.73715.35116.55117.27215.616.4619.22213.45513.62613.9114.7115.75915.56116.06416.693NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent NANA1.2980.9881.121.0690.6810.5450.7751.081NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseLiabilityNoncurrent dei:LegalEntity sji:SouthJerseyGasCompanyNANANA0.1390.1490.1570.1670.1880.2290.27NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA0.4650.3480.3480.5080.3761.0751.081.081NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo dei:LegalEntity sji:SouthJerseyGasCompanyNANANA0.0210.0210.0390.0390.150.1520.151NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA0.3070.190.190.3230.190.2330.2330.233NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree dei:LegalEntity sji:SouthJerseyGasCompanyNANANA0.0190.0190.0210.0210.0390.0390.039NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA0.2810.1650.1650.1660.0340.0650.0650.065NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour dei:LegalEntity sji:SouthJerseyGasCompanyNANANA0.0120.0120.0190.0190.0210.0210.021NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA0.15NANA0.140.0120.0340.0340.034NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA0.18NANA0.1170.1050.1140.1140.114NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity █▃▁1887.3991737.1181660.881NA1666.3291497.2831423.7851416.7871476.4721514.5541267.0221234.8321303.7171281.4971192.409NANANA1289.24NA1277.5471093.4421037.539946.828969.977971.485932.432863.974871.894865.042827.0757.477770.593777.791736.214695.796672.75667.792624.114595.473606.27610.081570.097NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▆▆▅▆▄▃▃▄▄▂▁▂▂▁▁▂▂▂▂1894.8241743.2421666.8761631.9531666.3291497.2831423.7851416.7871476.4721514.5541267.0221234.8321303.7171281.4971192.4091221.351279.2491307.8981289.241267.379NANA1037.539NANANA932.432NANANA827.0NANANA736.214NANANA624.114NANANA570.097NANANA
us-gaap:CommonStockValue ▆▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂█▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁140.557128.215125.74125.735125.733115.555115.493115.491115.488115.486106.883106.883106.88299.51699.43699.43699.43699.43599.34799.34799.34789.04888.70785.90985.598171.0685.41883.10682.682.05681.78879.9779.90879.67279.13477.71276.10475.77475.5375.1574.88674.88274.682NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▆▇▇▇▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁1462.3221193.5521218.01217.8221216.3631027.551027.9021026.6431024.9741023.097843.268843.064842.327709.756709.658709.448708.082707.483706.943706.058705.106505.601499.46449.792443.141440.882480.928431.244418.829406.397401.011361.578359.431353.53345.807315.76283.655276.677273.303264.374258.567257.778257.274NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▂▆▃▂▃▄▁▁▃▄▂▂▄▇▅▅▇█▇▇▇█▆▅▆▆▅▅▅▅▄▄▄▄▄▃▄▄▂▂▂▂▁322.988453.823355.678317.007357.086387.002313.237301.007362.372402.333343.258321.912391.538509.255420.351438.584497.854527.115510.597486.328497.648523.454474.167441.789471.676475.614439.218412.336432.438438.429406.041382.056397.611410.891382.127371.135381.633383.552341.677317.025333.134337.988297.473NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▁▁▃▃▃▃▆▆▆▆▂▂▂▂▆▆▆▅▇▇▆▆▄▄▄▄████▆▆▆▄▄▄▄▅▇▇▇▇-38.2-38.208-38.216-32.533-32.542-32.55-32.558-26.07-26.079-26.087-26.095-36.74-36.748-36.756-36.765-25.852-25.859-25.866-27.381-24.092-24.295-24.399-24.499-30.372-30.151-30.257-30.258-20.996-20.512-20.65-20.76-25.972-26.234-26.299-31.105-29.774-30.41-30.179-28.438-23.317-22.691-22.938-21.812NANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity sji:SouthJerseyGasCompany▁▁▁▃▃▃▃▅▅▅▅▃▃▃▃████-31.59-31.598-31.606-27.85-27.859-27.867-27.875-22.332-22.341-22.349-22.357-25.972-25.98-25.988-25.997-14.913-14.92-14.927-14.934NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities srt:ParentCompanyNANA-38.216NANANA-32.558NANANA-26.095NANANA-36.765NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:TreasuryStockValue ▆▆███▆▇▇▆▆▇▇▆▆▆▆▆▆▆▆▆▆▇▇▇▇▂▂▂▂▃▂▂▂▂▂▂▁▃▃▃▃▂0.2680.2640.3210.3140.3110.2740.2890.2840.2830.2750.2920.2870.2820.2740.2710.2660.2640.2690.2660.2620.2590.2620.2960.290.2870.2840.1650.1630.1610.1620.1860.170.1690.1670.1820.1810.180.1450.1930.1840.1830.1880.179NANANA
us-gaap:MinorityInterest █▅▅▁7.4256.1245.9954.236NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA0.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄█▄▄▄▇▃▁▃█▂▄▄▅▅▃▄▅▅▄▅▅▄▄▅▄▄▄▄▄▄▅▃▄▄▃▃▄▄▃▃▆▄▄▃▆43.188198.46357.43947.8940.412165.898-0.364-94.6633.827212.252-29.81320.56857.62795.20163.243.42344.1379.52865.80738.33460.01998.0834.90849.82767.12334.93652.2919.37340.43749.23236.1160.9166.62355.88655.5366.07714.05442.15955.78813.587-3.997125.97938.25417.139-14.137117.838
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▇▇▇▇▇▇▇█▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-156.992-112.328-210.432-162.21-125.054-10.055-150.167-105.238-113.466-108.777171.763-1828.682-70.335-61.531-57.847-66.5-90.164-72.753-66.089-63.968-55.864-59.247-129.753-95.175-85.274-60.45-166.597-80.127-78.069-50.226-122.868-102.842-44.16724.085-116.692-64.434-102.611-72.18-94.761-49.077-33.593-46.744-89.22-73.418-46.919-69.009
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity sji:SouthJerseyGasCompany▄▄▁▃▄▆▂▆▄▅▃▆▆▆▄▆▃▅▅█▇▅-68.551-64.233-84.054-74.186-66.181-56.136-81.07-56.277-66.932-58.792-73.296-55.269-57.652-54.486-65.25-56.214-70.969-60.769-63.915-44.071-47.494-60.763NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▂▂▂▁▂▂▂▁▁▂█▁▂▂▂▁▂▂▂▁▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▁▂▂▂▁169.869-96.098184.522105.95371.278-152.191158.039189.562122.842-117.145-123.58747.9661763.147-50.3414.97670.43940.085-20.77211.62328.415-4.245-38.4696.66444.19614.14728.557114.69557.1436.8585.34786.18244.0638.462-83.26761.6260.89886.64326.0343.937.27935.104-78.2951.14454.29960.728-48.159
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▄▅▄▄▅▅▄▅▄▅▁█▄▅▅▄▄▄▅56.065-9.96331.529-8.367-13.3643.6527.508-10.33913.203-13.6718.363-1760.1481750.439-16.6720.3697.362-5.949-13.997-18.838.403NANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄█▄▄▄▇▃▁▃█▂▄▄▅▅▃▄▅▅▄▅▅▄▄▅▄▄▄▄▄▄▅▃▄▄▃▃▄▄▃▃▆▄▄▃▆43.188198.46357.43947.8940.412165.898-0.364-94.6633.827212.252-29.81320.56857.62795.20163.243.42344.1379.52865.80738.33460.01998.0834.90849.82767.12334.93652.2919.37340.43749.23236.1160.9166.62355.88655.5366.07714.05442.15955.78813.587-3.997125.97938.25417.139-14.137117.838
us-gaap:NetIncomeLoss ▁█▆▄▄▇▅▃▄▇▅▃▁▇▄▃▄▅▅▄▄▆▆▄▄▆▅▄▄▅▅▄▄▅▅▄▄▆▅▄▄▆▅▄▄▅-96.828128.59869.084-10.402-2.639101.04139.484-34.805-13.39985.63745.927-45.685-93.819111.244.045-37.593-7.65937.71745.9339.635-4.82768.06950.886-12.62313.26753.57743.923-4.3969.62147.89839.26-1.4210.88842.86625.1862.01310.33454.07536.902-5.1386.07951.44825.3651.3088.4431.539
 us-gaap:NetIncomeLoss dei:LegalEntity sji:SouthJerseyGasCompanyNA83.61843.402-9.5433.67870.52228.291-11.6041.97668.73123.609-8.9761.56966.74729.584-5.7712.26646.47822.899-3.3155.04344.418NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss dei:LegalEntity,us-gaap:StatementEquityComponents sji:SouthJerseyGasCompany,us-gaap:RetainedEarningsNANANA-9.5433.67870.522NA-11.6041.97668.731NA-8.9761.56966.747NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarningsNANANA-10.402-2.639101.041NA-34.805-13.39985.637NA-45.685-93.819111.24NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▁█▆▄▄▇▅▃▄▇▅▃▁▇-96.74128.72769.042-10.402-2.639101.04139.484-34.805-13.39985.63745.927-45.685-93.819111.24NA-37.593-7.65937.71745.9339.635-4.82768.06950.886-12.62313.26753.57743.923-4.3969.62147.89839.26-1.4210.88842.86625.1862.01310.33454.07536.902-5.1386.07951.44825.3651.3088.4431.539
 us-gaap:ProfitLoss dei:LegalEntity sji:SouthJerseyGasCompany▂█▅▁▂▇▄▁▂▇6.31383.61843.402-9.5433.67870.52228.291-11.6041.97668.731NA-8.9761.56966.747NA-5.7712.26646.478NA-3.3155.04344.418NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss dei:LegalEntity,us-gaap:StatementEquityComponents sji:SouthJerseyGasCompany,us-gaap:RetainedEarnings▁█6.31383.618NANA3.67870.522NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:NoncontrollingInterest▁█0.0880.129NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:Parent▁█-96.828128.598NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-96.828128.598NANA-2.639101.041NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇▇▇▇▇▇▇▇▇▇█▁▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇-156.992-112.328-210.432-162.21-125.054-10.055-150.167-105.238-113.466-108.777171.763-1828.682-70.335-61.531-57.847-66.5-90.164-72.753-66.089-63.968-55.864-59.247-129.753-95.175-85.274-60.45-166.597-80.127-78.069-50.226-122.868-102.842-44.16724.085-116.692-64.434-102.611-72.18-94.761-49.077-33.593-46.744-89.22-73.418-46.919-69.009
 us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity sji:SouthJerseyGasCompany▄▄▁▃▄▆▂▆▄▅▃▆▆▆▄▆▃▅▅█▇▅-68.551-64.233-84.054-74.186-66.181-56.136-81.07-56.277-66.932-58.792-73.296-55.269-57.652-54.486-65.25-56.214-70.969-60.769-63.915-44.071-47.494-60.763NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▄▇█▄▄▅▅▅▄▆▃▃▂▂▂▂▂▄▂▂▂▅▄▃▁▆▃▃▁▅▄▂147.32396.896155.992179.657108.882108.394125.035124.338122.32794.594138.87782.71174.18455.08468.17361.12170.27570.17897.58263.47753.96854.662129.61393.0389.73149.62139.97980.32376.53942.628124.353102.88460.899NANANANANANANANANANANANANA
us-gaap:PaymentsToAcquireProductiveAssets ▇▆█▆▆▆█▅▇▇█▄▃▃▃▃▄▃▅▃▂▃▆▅▄▂█▃▄▃▇▅▂▂▆▂▂▂▄▂▁▁▃▁▁▁126.758105.38141.623110.193120.964113.671146.368101.257134.7121.887140.3574.79767.15758.81667.36163.57574.75167.27889.59769.56251.42767.416111.07192.96587.27854.307138.6668.97374.69160.254124.147104.19247.70140.604106.08650.86851.50445.38779.12646.21535.71232.06665.34632.46230.55638.546
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▁▂▂▂▁▂▂▂▁▁▂█▁▂▂▂▁▂▂▂▁▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▁▂▂▂▁169.869-96.098184.522105.95371.278-152.191158.039189.562122.842-117.145-123.58747.9661763.147-50.3414.97670.43940.085-20.77211.62328.415-4.245-38.4696.66444.19614.14728.557114.69557.1436.8585.34786.18244.0638.462-83.26761.6260.89886.64326.0343.937.27935.104-78.2951.14454.29960.728-48.159
us-gaap:ProceedsFromIssuanceOfLongTermDebt ▂▂▂▂▄▁▂▂▁▁▅▁█▁▁▂▁▂▁▁▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁160.0300.0250.0200.0600.00.0185.0234.6570.010.0840.00.01542.550.04.0125.048.0273.00.00.00.061.050.080.00.00.00.0140.0159.030.050.00.00.00.035.050.0NANA0.00.00.00.055.00.045.015.0
us-gaap:RepaymentsOfLongTermDebt ▂▁▁▃▅▁▁▂▃▅█▁▁▁▁▁▂▃▁▁▁▁▁▁▂▁▁▁97.52.57.909210.0450.00.08.909150.0175.0400.0758.90910.00.00.00.90915.077.4200.00.90935.3790.17312.90550.90910.164.00.00.021.0NANA0.025.0NANA0.00.0NANA0.025.0NANA10.0NANANA
us-gaap:PaymentsOfDividendsCommonStock NANA60.0927.277NANA53.81426.562NANA48.52323.941NANA43.95521.677NANA42.62820.962NANA35.76117.205NANA32.74815.611NANA29.43314.144NANA26.4912.252NANA23.10910.933NANA20.7629.858NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value14012812512512511511511511511510610610699999999999999998988858517185838282817979797977767575757474747474
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.11.91.92.02.01.81.81.91.92.01.81.81.92.62.62.72.72.72.72.82.82.52.52.52.55.12.62.72.72.72.83.03.03.03.03.23.33.43.43.63.63.73.64.20.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value12511510699
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets1.91.81.82.6
Percentage of Assets srt:ParentCompany3.93.93.85.2

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value11010110010093929292929186858479797979797979757169686813767666665646364636361606060600.0600740.05998260600.059950.059826
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value11010010010093929292929185858479797979797979757169686813667666565646363636261606060600.0599060.05979859590.0597460.059652
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value-0.871.280.69-0.1-0.031.090.43-0.38-0.140.940.54-0.53-1.121.40.05-0.47-0.10.470.580.12-0.060.960.73-0.180.190.3950.655-0.0650.1450.730.61-0.020.0140.6750.40.03250.170.8940.615-0.08550.10150.86050.4250.0220.14150.5285
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
Value-0.871.260.69-0.1-0.031.090.43-0.38-0.140.940.53-0.53-1.121.40.05-0.47-0.10.470.580.12-0.060.950.73-0.180.190.3950.65-0.0650.1450.730.61-0.020.0140.6740.40.03250.16950.89150.61-0.08550.1010.85750.4250.0220.1410.527
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

Income Loss From Continuing Operations Per Basic Share

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare

us-gaap:IncomeLossFromContinuingOperationsPerBasicShare


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
Value-0.871.280.69-0.1-0.031.090.43-0.38-0.140.940.54-0.53-1.121.40.05-0.47-0.10.470.580.12-0.060.960.73-0.180.190.791.31-0.130.291.471.22-0.040.0291.3650.810.070.3561.7921.23-0.1730.2091.7340.860.0480.2861.058
Percentage of IncomeLossFromContinuingOperationsPerBasicShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare


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
Value-0.871.260.69-0.1-0.031.090.43-0.38-0.140.940.53-0.53-1.121.40.05-0.47-0.10.470.580.12-0.060.950.73-0.180.190.791.3-0.130.291.471.22-0.040.0291.3620.810.070.3551.7881.22-0.1730.2081.7280.860.0480.2851.055
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1607000.01251000.01216000.01510000.01636000.01389000.01119000.01161000.01783000.0871000.0705000.0654000.01195000.01205000.0213000.01247000.01269000.01238000.0770000.0914000.0919000.0904000.0-590000.0767000.0610000.0894000.0-270000.0673000.0674000.0669000.0672000.0697000.0694000.0701000.0898000.0576000.0694000.0592000.0491000.0522000.0738000.0541000.0431000.0454000.0468000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.30.50.60.30.20.40.80.10.10.20.60.30.10.50.50.30.20.40.60.3-0.20.50.30.2-0.10.50.50.20.30.50.60.30.50.50.60.20.20.40.50.20.20.30.3

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-96.8212863-10.393-2.63110132-34.796-4.72368-12.8441353-4.889.75948-1.1590.953472.649105231-5.7646.32650231.177.69531
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.913.0-3.3-1.021.27.1-12.9-3.120.5-9.17.514.0-4.07.313.7-0.90.818.62.48.319.016.0-4.23.915.28.40.75.19.6

us-gaap:ComprehensiveIncomeNetOfTax dei:LegalEntity

sji:SouthJerseyGasCompany


Comprehensive
Period End2020-09-302019-12-312019-09-30
Value-9.53422-11.595
Percentage of ComprehensiveIncomeNetOfTax91.768.933.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.04.9-4.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.0-21.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-31
Value88000.0129000.0
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-96.732128-2.63110132-34.796-13.3918556-45.677-93.811111-37.586-7.65239429.838-4.7236856-12.844
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.9-1.021.27.1-12.9-5.814.19.6-14.5-46.525.1-16.5-3.19.212.94.5-3.120.522.0-9.1

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

sji:SouthJerseyGasCompany


Comprehensive
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value6.321833.6867022-11.5951.9846827-8.9681.57766-5.7642.27346-3.275.05344
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest-6.565.0-140.169.868.933.3-14.880.348.119.6-1.760.015.3-29.7118.5-33.2-107.065.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.611.01.314.84.9-4.30.911.34.6-2.90.815.0-2.50.910.9-1.53.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.037.60.0-21.04.229.50.0-18.12.534.40.00.00.00.00.00.0

Cost Of Goods And Service Excluding Depreciation Depletion And Amortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization


Cost
Period End2021-06-302021-03-312020-06-302020-03-31
Value62706271
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.99.222.615.1

us-gaap:CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization dei:LegalEntity

sji:SouthJerseyGasCompany


Cost
Period End2021-06-302021-03-312020-06-302020-03-31
Value34373337
Percentage of CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization54.953.254.551.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.74.912.37.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.019.8

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
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
Value269176147266273190165402393209145283210140179287186142981521279990241153767822813989871521207069156112106109216198124100231
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.455.953.755.959.170.871.366.366.766.772.263.860.961.973.567.456.665.363.745.949.570.351.263.154.762.159.265.162.369.271.659.661.263.057.057.156.877.568.165.170.077.766.270.2

us-gaap:CostOfGoodsAndServicesSold dei:LegalEntity

sji:SouthJerseyGasCompany


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value18745420258070192.65411884161989
Percentage of CostOfGoodsAndServicesSold0.00.020.311.717.330.325.810.11.629.521.47.713.331.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.79.811.26.59.316.915.27.21.119.614.35.19.620.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.042.90.034.95.651.00.032.530.246.3

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

sji:Nonutility


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value168245182146102130154163
Percentage of CostOfGoodsAndServicesSold0.00.067.783.469.149.156.386.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.432.137.546.637.227.533.361.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Nonutility0.00.00.00.00.00.00.00.0

sji:Utility


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value331268629451351192616
Percentage of CostOfGoodsAndServicesSold0.00.032.316.630.950.943.713.910.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.416.617.99.316.628.425.89.87.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Utility0.00.00.00.00.035.00.028.615.7

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
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
Value269176147266273190165402393209145283210168179287186142981521279990241153767822813989871521207069156112106109216198124100231
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.455.953.755.959.170.871.366.366.766.772.263.860.974.373.567.456.665.363.745.949.570.351.263.154.762.159.265.162.369.271.659.661.263.057.057.156.877.568.165.170.077.766.270.2

Costs And Expenses

us-gaap:CostsAndExpenses

us-gaap:CostsAndExpenses


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value300477380270239368387280258502499341335364349282248358259206162218192156147306215126129287190134133203171112111201155144148258241160136270
Percentage of CostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax75.762.678.485.787.377.483.6104.3111.382.984.7108.4166.482.0101.0124.3101.984.178.794.3105.265.774.7110.782.980.176.7103.497.282.285.1104.0108.679.786.7100.091.673.378.2105.292.278.085.299.789.882.2

us-gaap:CostsAndExpenses dei:LegalEntity

sji:SouthJerseyGasCompany


Costs
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value7413211472771361257052173142636814111871751161036458111
Percentage of CostsAndExpenses24.927.830.126.832.336.932.425.120.234.628.418.520.438.933.825.330.232.439.831.236.251.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.817.423.622.928.228.627.126.222.528.724.120.133.931.934.231.430.727.331.329.438.133.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.072.40.0127.5110.874.60.0127.7106.673.10.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-15.98416775-31.113-4.77313249-47.264-19.53910857-63.72-127.119146-13.946-63.569-13.22656647.458-11.85410759-20.919257058-7.4621.0945729-7.399-11.3485125-1.6778.726940-10.802107339-5.0911054
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.022.015.5-9.9-1.727.710.6-17.6-8.417.99.7-20.3-63.033.0-4.0-28.0-5.413.319.73.4-7.732.223.2-14.814.618.320.8-6.10.816.513.1-5.7-9.320.012.7-1.57.225.420.3-7.86.222.213.9-3.26.716.6

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments dei:LegalEntity

sji:SouthJerseyGasCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value8.34211055-12.8364.8979540-15.3512.6479230-11.7942.0518847-9.4593.6977635-5.3226.45871
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments-52.266.173.641.3-102.672.582.232.5-13.585.253.518.5-1.660.4-341.514.9-28.0134.954.6-71.4-54.566.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.114.511.4-4.11.820.18.7-5.71.115.25.2-3.81.020.013.8-4.21.517.910.7-2.44.221.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.051.00.0-27.85.639.70.0-23.83.245.70.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-96.6612869-10.344-2.57810139-34.746-13.3048546-45.642-93.793111-37.548-7.61237469.664-4.7986850-12.532135343-4.2769.7014839-1.2210.91643252.164105436-5.2036.24551251.4418.54131
Percentage of IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.914.2-3.3-0.921.28.5-12.9-5.714.17.8-14.5-46.525.1-16.5-3.18.913.94.4-3.120.519.8-8.97.514.115.7-3.57.313.817.5-0.90.717.012.91.98.919.718.6-3.83.915.69.10.95.69.6

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
Value-4.702418.939-19.467-0.1783311-10.925-4.6462412-16.649-31.97236-16.498-24.765-5.54421192.807-7.18939-1.006-10.968-3.2791610-8.325-9.5111-9.621-5.533-11.6327.772-0.757-2.576-1.072153.022-6.0343.0042214-7.4270.26521
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 RevenueFromContractWithCustomerExcludingAssessedTax-1.25.51.8-6.2-0.17.02.5-4.1-2.04.12.2-5.3-15.88.2-4.8-10.9-2.35.15.81.3-4.711.8-0.4-7.8-1.84.33.7-6.8-7.13.4-4.3-4.3-9.53.0-0.4-2.3-0.95.81.5-4.41.96.84.9-4.60.26.7

us-gaap:IncomeTaxExpenseBenefit dei:LegalEntity

sji:SouthJerseyGasCompany


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.0292712-3.2931.2192512-3.7470.671236.913-2.8180.4822118-3.6881.4312912-2.0071.41527
Percentage of IncomeTaxExpenseBenefit-43.264.9136.116.9-684.875.6104.434.3-14.495.054.116.9-1.560.0-109.414.9-25.8136.865.2-71.5-19.769.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.53.62.5-1.00.45.32.6-1.40.33.91.2-0.90.24.95.2-1.60.67.03.8-0.90.98.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.013.40.0-6.81.410.20.0-5.70.811.30.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, sji:EnergyManagement, sji:RetailServicesSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.1220.1720.156-0.029
Percentage of IncomeTaxExpenseBenefit-2.60.4-87.6-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.1-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:RetailServicesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyAndRetailServicesSegments


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.6545.0841.8751.977
Percentage of IncomeTaxExpenseBenefit35.212.2-1053.45.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.40.70.70.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyAndRetailServicesSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyOperationsSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.7764.9121.7192.006
Percentage of IncomeTaxExpenseBenefit37.811.8-965.76.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.40.60.60.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:DecarbonizationSegment


Income
Period End2021-06-302021-03-31
Value-0.0730.197
Percentage of IncomeTaxExpenseBenefit1.60.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:DecarbonizationSegment0.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesAndDecarbonizationSegments


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.7040.661-0.7551.049
Percentage of IncomeTaxExpenseBenefit15.01.6424.23.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.20.1-0.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesAndDecarbonizationSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesSegment


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value-0.6310.464-0.7551.049
Percentage of IncomeTaxExpenseBenefit13.41.1424.23.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.20.1-0.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:ApplianceServiceOperations


Income
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.2150.1160.1820.142
Percentage of IncomeTaxExpenseBenefit2.4-0.61.6-1.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:ApplianceServiceOperations0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProduction


Income
Period End2020-09-302019-09-30
Value-11.1910.242
Percentage of IncomeTaxExpenseBenefit57.5-2.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.60.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProduction0.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment


Income
Period End2020-12-312020-09-302019-12-312019-09-30
Value-13.02-11.075-3.0110.384
Percentage of IncomeTaxExpenseBenefit-145.756.9-25.8-3.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.7-3.5-0.70.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ELKUtilityOperationsSegment


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.0-0.0040.0540.1360.046-0.054
Percentage of IncomeTaxExpenseBenefit0.00.0-30.30.40.40.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.00.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ELKUtilityOperationsSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ETGUtilityOperationsSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.965124.596-2.475-0.277103.733-2.065
Percentage of IncomeTaxExpenseBenefit20.529.151.412.7155.631.832.018.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.21.60.9-0.8-0.12.20.8-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ETGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegment


Income
Period End2020-12-312020-09-302019-12-312019-09-30
Value16-5.77215-5.866
Percentage of IncomeTaxExpenseBenefit187.529.7136.853.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.5-1.83.5-2.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegments


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.064390.99635
Percentage of IncomeTaxExpenseBenefit-22.694.0-559.6107.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.35.20.47.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGUtilityOperationsSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.0292712-3.2931.2192512-3.747
Percentage of IncomeTaxExpenseBenefit-43.264.9136.116.9-684.875.6104.434.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.53.62.5-1.00.45.32.6-1.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:RetailElectricOperations


Income
Period End2020-09-302019-09-30
Value-0.2330.004
Percentage of IncomeTaxExpenseBenefit1.2-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.10.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:RetailElectricOperations0.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyAndRetailElectricOperationsSegment


Income
Period End2020-09-302019-09-30
Value0.625-2.126
Percentage of IncomeTaxExpenseBenefit-3.219.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.2-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyAndRetailElectricOperationsSegment0.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyOperations


Income
Period End2020-09-302019-09-30
Value0.858-2.13
Percentage of IncomeTaxExpenseBenefit-4.419.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyOperations0.00.0

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

us-gaap:OperatingSegments, sji:CorporateAndServicesSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-3.379-3.1820.202-3.187-2.207-5.615-4.776-3.299
Percentage of IncomeTaxExpenseBenefit71.9-7.62.316.41239.9-16.8-40.930.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-0.40.0-1.0-0.8-1.2-1.0-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CorporateAndServicesSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:MidstreamSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.029-0.061-0.043-0.058-0.087-0.029-0.052-0.018
Percentage of IncomeTaxExpenseBenefit0.6-0.1-0.50.348.9-0.1-0.40.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:MidstreamSegment0.00.00.00.00.00.00.00.0

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
Value3131292728322828282830261913151010166.7057.3558.2299.167.448.1077.4748.6018.8626.7686.8467.0846.3044.3933.424.7082.3175.9815.1955.4935.6216.2426.2345.9814.996.2765.6644.966
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 RevenueFromContractWithCustomerExcludingAssessedTax7.94.16.18.810.46.86.210.712.34.75.18.49.73.14.54.74.53.92.03.45.32.82.95.74.22.23.25.55.12.02.83.42.81.81.25.34.32.02.84.53.91.81.83.93.71.5

us-gaap:InterestExpense dei:LegalEntity

sji:SouthJerseyGasCompany


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value9.6139.7259.5568.2718.0197.5428.077.847.8967.8487.1767.1086.9996.7286.3136.4376.0775.8784.4784.0584.5524.787
Percentage of InterestExpense30.830.932.229.828.023.228.327.227.827.423.726.835.848.240.160.955.435.166.855.255.352.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.41.32.02.62.91.61.72.93.41.31.22.33.51.51.82.82.51.41.41.92.91.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.04.00.014.216.83.40.014.410.93.50.00.00.00.00.00.00.00.0

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-31.185-31.459-29.647-27.762-28.589-32.536-28.533-28.857-28.434-28.653-30.229-26.534-19.561-13.972-15.728-10.567-10.979-16.745-7.355-8.229-9.16-8.107
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.9-4.1-6.1-8.8-10.4-6.8-6.2-10.7-12.3-4.7-5.1-8.4-9.7-3.1-4.5-4.7-4.5-3.9-3.4-5.3-2.8-5.7

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value1.8881.9751.8721.3531.8452.2322.7033.2553.4393.7554.4765.5125.4884.6453.9154.3674.1143.3322.7172.7022.7372.142
Percentage of InterestIncomeExpenseNet-6.1-6.3-6.3-4.9-6.5-6.9-9.5-11.3-12.1-13.1-14.8-20.8-28.1-33.2-24.9-41.3-37.5-19.9-36.9-32.8-29.9-26.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.30.40.40.70.50.61.21.50.60.81.82.71.01.11.91.70.81.21.70.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-30
Value-33.073-33.434-31.519-29.115-30.434-34.768-31.236-32.112-31.873-32.408-34.705-32.046-25.049-18.617-19.643-14.934-15.093-20.077-10.072-10.931-11.897-10.249
Percentage of InterestIncomeExpenseNet106.1106.3106.3104.9106.5106.9109.5111.3112.1113.1114.8120.8128.1133.2124.9141.3137.5119.9136.9132.8129.9126.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-8.3-4.4-6.5-9.2-11.1-7.3-6.7-11.9-13.8-5.3-5.9-10.2-12.4-4.2-5.7-6.6-6.2-4.7-4.6-7.1-3.6-7.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, sji:EnergyManagement, sji:RetailServicesSegment


Interest
Period End2021-06-30
Value-0.099
Percentage of InterestIncomeExpenseNet0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:RetailServicesSegment0.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyAndRetailServicesSegments


Interest
Period End2021-06-30
Value0.099
Percentage of InterestIncomeExpenseNet-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyAndRetailServicesSegments0.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:DecarbonizationSegment


Interest
Period End2021-06-302021-03-31
Value-0.273-0.294
Percentage of InterestIncomeExpenseNet0.90.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:DecarbonizationSegment0.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesAndDecarbonizationSegments


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.478-1.502-1.095-1.602
Percentage of InterestIncomeExpenseNet4.74.83.84.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.4-0.2-0.4-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesAndDecarbonizationSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesSegment


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value-1.205-1.208-1.095-1.602
Percentage of InterestIncomeExpenseNet3.93.83.84.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.2-0.4-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProduction


Interest
Period End2020-09-302019-09-30
Value-0.277-2.097
Percentage of InterestIncomeExpenseNet1.07.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProduction0.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ELKUtilityOperationsSegment


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.0-0.002-0.007-0.0120.007-0.004
Percentage of InterestIncomeExpenseNet-0.00.00.00.0-0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.0-0.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ELKUtilityOperationsSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ETGUtilityOperationsSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-7.754-8.693-7.676-7.398-7.778-7.145-7.246-7.165
Percentage of InterestIncomeExpenseNet24.927.625.926.627.222.025.424.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.0-1.1-1.6-2.3-2.8-1.5-1.6-2.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ETGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegment


Interest
Period End2020-12-312020-09-302019-12-312019-09-30
Value-17.232-15.671-15.309-15.009
Percentage of InterestIncomeExpenseNet58.156.453.752.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.5-5.0-3.3-5.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegments


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value-17.367-18.418-15.804-14.699
Percentage of InterestIncomeExpenseNet55.758.555.345.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-4.4-2.4-5.8-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGUtilityOperationsSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-9.613-9.725-9.556-8.271-8.019-7.542-8.07-7.84
Percentage of InterestIncomeExpenseNet30.830.932.229.828.023.228.327.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.4-1.3-2.0-2.6-2.9-1.6-1.7-2.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, sji:CorporateAndServicesSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-13.495-12.843-12.584-12.49-12.955-17.887-13.22-14.433
Percentage of InterestIncomeExpenseNet43.340.842.445.045.355.046.350.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.4-1.7-2.6-4.0-4.7-3.8-2.9-5.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CorporateAndServicesSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:MidstreamSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.634-0.671-0.676-0.677-0.58-0.58-0.59-0.573
Percentage of InterestIncomeExpenseNet2.02.12.32.42.01.82.12.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.1-0.1-0.2-0.2-0.1-0.1-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:MidstreamSegment0.00.00.00.00.00.00.00.0

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
Value-96.82812869-10.402-2.63910139-34.805-13.3998545-45.685-93.8191114.045-37.593-7.65937459.635-4.8276850-12.623135343-4.3969.6214739-1.4210.88842252.013105436-5.1386.07951251.3088.4431
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 RevenueFromContractWithCustomerExcludingAssessedTax-24.416.914.2-3.3-1.021.28.5-12.9-5.814.17.8-14.5-46.525.11.2-16.6-3.18.913.94.4-3.120.419.7-8.97.514.015.6-3.67.213.717.5-1.10.716.812.71.88.519.718.6-3.73.815.58.90.85.69.6

us-gaap:NetIncomeLoss dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value8343-9.5433.6787028-11.6041.9766823-8.9761.5696629-5.7712.2664622-3.3155.04344
Percentage of NetIncomeLoss65.062.891.7-139.469.871.733.3-14.780.351.419.6-1.760.0731.415.4-29.6123.249.9-34.4-104.565.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.08.9-3.01.314.86.1-4.30.911.34.0-2.90.815.08.6-2.50.910.96.9-1.53.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.037.60.0-21.04.229.50.0-18.12.434.40.00.00.00.00.00.00.00.0

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

sji:SouthJerseyGasCompany, us-gaap:RetainedEarnings


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-9.5433.67870-11.6041.97668-8.9761.56966
Percentage of NetIncomeLoss91.7-139.469.833.3-14.780.319.6-1.760.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.01.314.8-4.30.911.3-2.90.815.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-10.402-2.639101-34.805-13.39985-45.685-93.819111
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-1.021.2-12.9-5.814.1-14.5-46.525.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-31
Value88000.0129000.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.5922.0680.3585.1433.625-1.1471.940.6180.0292.575-2.7371.4060.9742.7615.2392.2532.3175.6651.2022.2234.3612.2031.9882.2413.042.2411.8473.4194.1852.3682.2452.22.6653.8691.2144.3593.6581.8732.6792.5863.8056.5722.4010.6480.4791.024
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.30.11.61.3-0.20.40.20.00.4-0.50.40.50.61.51.00.91.30.41.02.80.70.81.61.70.60.72.83.10.71.01.72.21.50.63.93.00.71.31.92.42.00.80.40.30.3

us-gaap:NonoperatingIncomeExpense dei:LegalEntity

sji:SouthJerseyGasCompany


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.4861.6152.1871.5153.184-1.351.3090.8080.3281.931-0.5732.1410.6072.511.631.6061.6181.6210.7271.1891.0790.836
Percentage of NonoperatingIncomeExpense41.478.1610.929.587.8117.767.5130.71131.075.020.9152.362.390.931.171.369.828.660.553.524.737.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.50.51.2-0.30.30.30.10.3-0.10.70.30.60.50.70.70.40.20.50.70.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.0-0.70.01.50.70.80.04.30.91.30.00.00.00.00.00.00.00.0

Operating Costs And Expenses

us-gaap:OperatingCostsAndExpenses

us-gaap:OperatingCostsAndExpenses


Operating
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
Value13811911813013811611812413313120892152122788577697173716362716956566454474752504545464542424344393939
Percentage of OperatingCostsAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax28.637.843.027.529.943.251.120.622.641.9103.220.844.354.032.220.123.631.746.021.927.645.335.218.624.745.842.218.524.437.138.420.425.341.137.316.822.731.026.713.115.724.926.012.0

us-gaap:OperatingCostsAndExpenses dei:LegalEntity

sji:SouthJerseyGasCompany


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value6858586162575660635355575447464847414246
Percentage of OperatingCostsAndExpenses49.549.449.846.945.049.847.448.747.640.426.661.935.938.759.356.461.559.560.363.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.118.621.412.913.521.524.210.010.816.927.512.915.920.919.111.314.518.927.713.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.032.70.0104.7119.426.10.0107.686.629.60.00.00.00.00.00.00.00.0

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
Value11196104-8.4942016575-19.0258.86613489-38.592-108.532157-3.457-55.255-4.564677012-7.98611465-15.053307665-4.1133.7556233-5.206-10.5935126-0.055107343-7.1461273410.5371558
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 RevenueFromContractWithCustomerExcludingAssessedTax2.925.821.6-2.77.334.816.4-7.13.822.215.3-12.3-53.835.6-1.0-24.3-1.915.921.35.7-5.234.325.3-10.717.119.923.3-3.42.817.814.9-4.0-8.620.313.3-0.08.426.721.8-5.27.822.014.80.310.217.8

us-gaap:OperatingIncomeLoss dei:LegalEntity

sji:SouthJerseyGasCompany


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1611862-6.089.73210447-8.319109838-6.8278.4439252-4.6288.1568039-2.4539.93175
Percentage of OperatingIncomeLoss141.960.460.171.648.263.162.343.7115.273.142.517.7-7.858.8-1513.28.4-178.7119.155.7-19.5-124.466.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.215.613.0-1.93.522.010.2-3.14.416.26.5-2.24.220.915.1-2.03.318.911.9-1.16.422.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.055.70.0-15.121.742.20.0-13.813.247.90.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, sji:EnergyManagement, sji:RetailServicesSegment


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.134-0.220.103-0.768
Percentage of OperatingIncomeLoss1.2-0.10.5-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:RetailServicesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyAndRetailServicesSegments


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value-7.033176.1956.644
Percentage of OperatingIncomeLoss-60.68.730.74.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.82.22.31.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyAndRetailServicesSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyOperationsSegment


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value-7.167176.0927.412
Percentage of OperatingIncomeLoss-61.78.830.24.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.82.32.21.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:DecarbonizationSegment


Operating
Period End2021-06-30
Value-0.008
Percentage of OperatingIncomeLoss-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:DecarbonizationSegment0.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesAndDecarbonizationSegments


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.4252.7-2.016-0.296
Percentage of OperatingIncomeLoss3.71.4-10.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.4-0.7-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesAndDecarbonizationSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesSegment


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.4332.7-2.016-0.296
Percentage of OperatingIncomeLoss3.71.4-10.0-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.4-0.7-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:ApplianceServiceOperations


Operating
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.4920.5860.6240.468
Percentage of OperatingIncomeLoss0.5-6.90.8-2.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:ApplianceServiceOperations0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProduction


Operating
Period End2020-09-302019-09-30
Value2.4552.634
Percentage of OperatingIncomeLoss-28.9-13.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.81.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProduction0.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment


Operating
Period End2020-12-312020-09-302019-12-312019-09-30
Value-5.2533.041-8.6733.102
Percentage of OperatingIncomeLoss-5.0-35.8-11.4-16.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.11.0-1.91.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ELKUtilityOperationsSegment


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-0.001-0.3740.2120.5350.32-0.197
Percentage of OperatingIncomeLoss-0.04.41.00.30.41.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.10.10.10.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ELKUtilityOperationsSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ETGUtilityOperationsSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.8675832-3.1636.3755428-5.112
Percentage of OperatingIncomeLoss24.729.530.937.231.632.637.226.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.77.66.7-1.02.311.46.1-1.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ETGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegment


Operating
Period End2020-12-312020-09-302019-12-312019-09-30
Value95-9.61775-13.628
Percentage of OperatingIncomeLoss91.0113.299.971.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.6-3.116.4-5.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegments


Operating
Period End2021-06-302021-03-312020-06-302020-03-31
Value1917616159
Percentage of OperatingIncomeLoss166.689.980.896.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.923.25.933.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGUtilityOperationsSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1611862-6.089.73210447-8.319
Percentage of OperatingIncomeLoss141.960.460.171.648.263.162.343.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.215.613.0-1.93.522.010.2-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:RetailElectricOperations


Operating
Period End2020-09-302019-09-30
Value-0.842-0.003
Percentage of OperatingIncomeLoss9.90.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.3-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:RetailElectricOperations0.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyAndRetailElectricOperationsSegment


Operating
Period End2020-09-302019-09-30
Value1.926-8.374
Percentage of OperatingIncomeLoss-22.744.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.6-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyAndRetailElectricOperationsSegment0.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyOperations


Operating
Period End2020-09-302019-09-30
Value2.768-8.371
Percentage of OperatingIncomeLoss-32.644.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.9-3.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyOperations0.00.0

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

us-gaap:OperatingSegments, sji:CorporateAndServicesSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-1.1190.178-1.217-3.844-0.3070.172-3.805-0.125
Percentage of OperatingIncomeLoss-9.60.1-1.245.3-1.50.1-5.00.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.0-0.3-1.2-0.10.0-0.8-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CorporateAndServicesSegment0.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9000.08000.08000.010000.09000.08000.08000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax dei:LegalEntity

sji:SouthJerseyGasCompany


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9000.08000.08000.010000.09000.08000.08000.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.0080.0080.0080.008-6.4880.0090.0080.008100.0080.0080.009-10.9130.0070.0071.515-3.2890.2030.1040.15.873-0.2210.1060.001-9.262-0.4840.1380.115.2120.2620.0654.806-1.3310.636-0.231-1.741
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.0-1.40.00.00.01.80.00.00.0-3.20.00.00.4-1.00.10.10.02.3-0.20.10.0-3.3-0.40.10.02.30.20.11.9-0.70.6-0.2-0.6

us-gaap:OtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

sji:SouthJerseyGasCompany


Other
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.0080.0080.0080.008-5.5430.0090.0080.0083.6150.0080.0080.009-11.0840.0070.0070.007-2.1380.0450.010.011
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.085.4100.0100.0100.034.0100.0100.0100.0101.6100.0100.00.565.022.29.611.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.0-1.20.00.00.00.60.00.00.0-3.20.00.00.0-0.60.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-96.7412869-10.402-2.63910139-34.805-13.3998545-45.685-93.819111-37.593-7.65937459.635-4.8276850-12.623135343-4.3969.6214739-1.4210.88842252.013105436-5.1386.07951251.3088.4431
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.914.2-3.3-1.021.28.5-12.9-5.814.17.8-14.5-46.525.1-16.6-3.18.913.94.4-3.120.419.7-8.97.514.015.6-3.67.213.717.5-1.10.716.812.71.88.519.718.6-3.73.815.58.90.85.69.6

us-gaap:ProfitLoss dei:LegalEntity

sji:SouthJerseyGasCompany


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value6.3138343-9.5433.6787028-11.6041.97668-8.9761.56966-5.7712.26646-3.3155.04344
Percentage of ProfitLoss-6.565.062.991.7-139.469.871.733.3-14.780.319.6-1.760.015.4-29.6123.2-34.4-104.565.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.611.08.9-3.01.314.86.1-4.30.911.3-2.90.815.0-2.50.910.9-1.53.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.037.60.0-21.04.229.5-18.12.434.40.00.00.00.00.00.0

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

sji:SouthJerseyGasCompany, us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.313833.67870
Percentage of ProfitLoss-6.565.0-139.469.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.611.01.314.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany us-gaap:RetainedEarnings0.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-31
Value0.0880.129
Percentage of ProfitLoss-0.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-31
Value-96.828128
Percentage of ProfitLoss100.199.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value-96.828128-2.639101
Percentage of ProfitLoss100.199.9100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.9-1.021.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.0

Regulated Operating Revenue

us-gaap:RegulatedOperatingRevenue

us-gaap:RegulatedOperatingRevenue


Regulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value14440228210314538628392106
Percentage of RegulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.452.858.132.853.181.361.234.446.1

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value396762485315274476463268231606589314201444345227244425329219154333257141177382281122133350224128122255197111121274198137160331283160151329
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

sji:CorporateServicesAndIntersegmentEliminations, sji:CommercialandIndustrial, sji:CorporateAndServicesSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value-6.777-4.917-0.267-2.372-3.241-3.092
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-0.1-0.5-0.7-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-0.1-0.5-0.7-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CorporateServicesAndIntersegmentEliminations sji:CommercialandIndustrial sji:CorporateAndServicesSegment100.0100.0100.0100.0100.0100.0

sji:CorporateServicesAndIntersegmentEliminations, us-gaap:OtherCustomer, sji:CorporateAndServicesSegment


Revenue
Period End2021-03-31
Value-0.096
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CorporateServicesAndIntersegmentEliminations us-gaap:OtherCustomer sji:CorporateAndServicesSegment100.0

us-gaap:IntersegmentElimination, sji:CommercialandIndustrial, sji:CorporateAndServicesSegment


Revenue
Period End2021-06-302020-06-30
Value-0.847-0.947
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination sji:CommercialandIndustrial sji:CorporateAndServicesSegment100.0100.0

us-gaap:IntersegmentElimination, us-gaap:OtherCustomer, sji:CorporateAndServicesSegment


Revenue
Period End2021-06-30
Value-0.107
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination us-gaap:OtherCustomer sji:CorporateAndServicesSegment100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:ELKUtilityOperationsSegment


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.1850.71.6591.4280.629
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.30.30.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.30.30.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:ELKUtilityOperationsSegment0.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:ETGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2149391620373212
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.46.58.15.47.57.87.04.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.46.58.15.47.57.87.04.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:ETGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:OnSiteEnergyProduction


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.3172.1546.98810111411
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.00.81.52.34.56.41.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.00.81.52.34.56.41.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:OnSiteEnergyProduction100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:RenewablesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.2056.4232.1546.988
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.80.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.80.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:RenewablesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:RetailElectricOperations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.8145.6546.9947.038101213
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.11.51.53.85.42.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.11.51.53.85.42.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:RetailElectricOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:RetailServicesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.9561.6076.0097.363
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.22.21.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.22.21.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:RetailServicesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:SJGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3160432424413421
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.07.99.07.88.88.87.57.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.07.99.07.88.88.87.57.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:WholesaleEnergyOperations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value197119138163158111199
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.743.629.235.458.948.232.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.743.629.235.458.948.232.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:WholesaleEnergyOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:CommercialandIndustrial, sji:WholesaleEnergyOperationsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value251373119138
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.349.143.629.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.349.143.629.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CommercialandIndustrial sji:WholesaleEnergyOperationsSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:OSSandCapacityRelease, sji:SJGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.2492.2991.7421.8591.4632.6092.7032.234
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.30.40.60.50.50.60.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.30.40.60.50.50.60.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OSSandCapacityRelease sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Residential, sji:ApplianceServiceOperations


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4930.4910.5050.4890.5130.5140.4840.531
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Residential sji:ApplianceServiceOperations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Residential, sji:ELKUtilityOperationsSegment


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.0770.5661.5361.290.243
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.20.30.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.20.30.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Residential sji:ELKUtilityOperationsSegment0.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Residential, sji:ETGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value31105692040927316
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.913.914.46.714.619.415.96.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.913.914.46.714.619.415.96.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Residential sji:ETGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Residential, sji:RetailServicesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.4820.5120.5050.489
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Residential sji:RetailServicesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Residential, sji:SJGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value51166104405814211131
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.921.921.613.021.530.024.111.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.921.921.613.021.530.024.111.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Residential sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:OtherCustomer, sji:ELKUtilityOperationsSegment


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.0230.0970.0830.0390.023
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OtherCustomer sji:ELKUtilityOperationsSegment0.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:OtherCustomer, sji:ETGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.1810.192-2.5330.1910.1223.8494.3361.733
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.50.10.00.80.90.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.50.10.00.80.90.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OtherCustomer sji:ETGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:OtherCustomer, sji:RetailServicesSegment


Revenue
Period End2021-06-302021-03-31
Value1.0320.935
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OtherCustomer sji:RetailServicesSegment100.0100.0

us-gaap:OperatingSegments, us-gaap:OtherCustomer, sji:SJGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.6570.7610.6550.3810.4530.5570.6690.544
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.10.10.20.10.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.10.10.10.20.10.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments us-gaap:OtherCustomer sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

sji:CorporateServicesAndIntersegmentEliminations, sji:Electric, sji:CorporateAndServicesSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value-0.0780.015-0.324-1.283-1.96-2.184
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0-0.1-0.3-0.4-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.0-0.1-0.3-0.4-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CorporateServicesAndIntersegmentEliminations sji:Electric sji:CorporateAndServicesSegment100.0100.0100.0100.0100.0100.0

sji:CorporateServicesAndIntersegmentEliminations, sji:Gas, sji:CorporateAndServicesSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value-6.699-5.292-0.595-1.089-1.626-1.173
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.1-0.2-0.2-0.4-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.1-0.2-0.2-0.4-0.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CorporateServicesAndIntersegmentEliminations sji:Gas sji:CorporateAndServicesSegment100.0100.0100.0100.0100.0100.0

sji:CorporateServicesAndIntersegmentEliminations, sji:OtherProducts, sji:CorporateAndServicesSegment


Revenue
Period End2021-03-312020-12-312020-09-302019-12-312019-09-30
Value-0.0960.360.6520.3450.265
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.10.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.00.10.20.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CorporateServicesAndIntersegmentEliminations sji:OtherProducts sji:CorporateAndServicesSegment100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, sji:Electric, sji:CorporateAndServicesSegment


Revenue
Period End2021-06-302020-06-30
Value-0.048-0.379
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination sji:Electric sji:CorporateAndServicesSegment100.0100.0

us-gaap:IntersegmentElimination, sji:Gas, sji:CorporateAndServicesSegment


Revenue
Period End2021-06-302020-06-30
Value-0.799-0.568
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination sji:Gas sji:CorporateAndServicesSegment100.0100.0

us-gaap:IntersegmentElimination, sji:OtherProducts, sji:CorporateAndServicesSegment


Revenue
Period End2021-06-30
Value-0.107
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination sji:OtherProducts sji:CorporateAndServicesSegment100.0

us-gaap:OperatingSegments, sji:CHP, sji:OnSiteEnergyProduction


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.03.5026.6227.2186.7947.359
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.71.42.72.91.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.71.42.72.91.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CHP sji:OnSiteEnergyProduction0.00.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Electric, sji:RetailElectricOperations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.8145.6546.99410141516
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.11.52.25.46.62.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.11.52.25.46.62.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Electric sji:RetailElectricOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Electric, sji:RetailServicesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.9561.6075.6546.994
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.22.11.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.22.11.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Electric sji:RetailServicesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:FuelCells, sji:RenewablesSegment


Revenue
Period End2021-06-302021-03-31
Value3.0164.087
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:FuelCells sji:RenewablesSegment100.0100.0

us-gaap:OperatingSegments, sji:Gas, sji:ELKUtilityOperationsSegment


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.2851.3633.2782.7570.895
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.50.70.60.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.50.70.60.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Gas sji:ELKUtilityOperationsSegment0.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Gas, sji:ETGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value53155106386013311030
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.420.422.012.122.128.023.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.420.422.012.122.128.023.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Gas sji:ETGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Gas, sji:SJGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value85229151678418714955
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.630.231.121.530.939.532.320.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.630.231.121.530.939.532.320.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Gas sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Gas, sji:WholesaleEnergyOperations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value197119138163158111199
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.743.629.235.458.948.232.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.743.629.235.458.948.232.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Gas sji:WholesaleEnergyOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Gas, sji:WholesaleEnergyOperationsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value251373119138
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.349.143.629.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.349.143.629.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Gas sji:WholesaleEnergyOperationsSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Landfills, sji:OnSiteEnergyProduction


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.8880.7641.5791.361.3331.5561.395
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.30.50.70.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.30.50.70.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Landfills sji:OnSiteEnergyProduction100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Landfills, sji:RenewablesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.2850.4250.7641.579
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.30.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Landfills sji:RenewablesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:OtherProducts, sji:ApplianceServiceOperations


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4930.4910.5050.4890.5130.5140.4840.531
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OtherProducts sji:ApplianceServiceOperations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:OtherProducts, sji:RetailServicesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.5141.4470.860.858
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.30.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OtherProducts sji:RetailServicesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Solar, sji:OnSiteEnergyProduction


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.4291.391.9072.6683.4296.4382.576
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.50.40.61.32.80.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.70.50.40.61.32.80.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Solar sji:OnSiteEnergyProduction100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:Solar, sji:RenewablesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.9041.9111.391.907
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.30.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.30.50.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:Solar sji:RenewablesSegment100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

sji:CorporateServicesAndIntersegmentEliminations, sji:CorporateAndServicesSegment


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value-6.873-4.917-0.267-2.372-3.241-3.092
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-0.1-0.5-0.7-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.9-1.0-0.1-0.5-0.7-1.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CorporateServicesAndIntersegmentEliminations sji:CorporateAndServicesSegment100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination, sji:CorporateAndServicesSegment


Revenue
Period End2021-06-302020-06-30
Value-0.954-0.947
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.2-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination sji:CorporateAndServicesSegment100.0100.0

us-gaap:OperatingSegments, sji:ApplianceServiceOperations


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4930.4910.5050.4890.5130.5140.4840.531
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:ApplianceServiceOperations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:ELKUtilityOperationsSegment


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.2851.3633.2782.7570.895
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.50.70.60.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.50.70.60.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:ELKUtilityOperationsSegment0.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:ETGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value53155106386013311030
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.420.422.012.122.128.023.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.420.422.012.122.128.023.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:ETGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProduction


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.3172.1546.98810111411
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.00.81.52.34.56.41.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.00.81.52.34.56.41.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProduction100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:RenewablesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.2056.4232.1546.988
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.80.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.80.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:RenewablesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:RetailElectricOperations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.8145.6546.99410141516
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.11.52.25.46.62.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.52.11.52.25.46.62.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:RetailElectricOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:RetailServicesSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value3.473.0546.5147.852
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.42.41.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.42.41.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:RetailServicesSegment100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:SJGUtilityOperationsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value85229151678418714955
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.630.231.121.530.939.532.320.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.630.231.121.530.939.532.320.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyOperations


Revenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value197119138163158111199
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.743.629.235.458.948.232.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.743.629.235.458.948.232.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyOperations100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyOperationsSegment


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value251373119138
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.349.143.629.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.349.143.629.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyOperationsSegment100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers

sji:CommercialandIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value309485307250172231247211167310359256149282
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax78.163.663.379.462.848.753.378.972.351.261.081.574.163.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax78.163.663.379.462.848.753.378.972.351.261.081.574.163.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CommercialandIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:OSSandCapacityRelease


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.2492.2991.7421.8591.4632.6092.7032.2342.2441.772.2943.0660.9725.204
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.30.40.60.50.50.60.81.00.30.41.00.51.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.30.40.60.50.50.60.81.00.30.41.00.51.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:OSSandCapacityRelease100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:Residential


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value822731756210023719052592911855350155
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.935.836.119.836.549.841.119.525.848.031.416.925.235.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.935.836.119.836.549.841.119.525.848.031.416.925.235.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Residential100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCustomer


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.7631.792-1.8780.5950.6724.4895.0442.32.1373.3842.8491.6620.539
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.2-0.40.20.20.91.10.90.90.60.50.50.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.2-0.40.20.20.91.10.90.90.60.50.50.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OtherCustomer100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

sji:CHP


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.00.03.5026.6227.2186.7947.3597.3088.1517.1617.853
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.71.42.72.91.21.22.63.51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.71.42.72.91.21.22.63.51.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:CHP0.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:Electric


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.9081.5292.464.495.2755.7118.27612131526342628
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.20.51.41.91.21.84.65.72.54.411.113.36.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.20.51.41.91.21.84.65.72.54.411.113.36.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Electric100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:FuelCells


Revenue
Period End2021-06-302021-03-31
Value3.0164.087
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:FuelCells100.0100.0

sji:Gas


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-30
Value3897524793032664624252432035799328515339665
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.198.898.696.297.097.191.890.787.795.5158.227.276.189.328.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.198.898.696.297.097.191.890.787.795.5158.227.276.189.328.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Gas100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:Landfills


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.2850.4250.4570.8880.7641.5791.361.3331.5561.3951.5471.7741.6681.468
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.30.30.30.30.50.70.20.30.60.80.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.30.30.30.30.50.70.20.30.60.80.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Landfills100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:OtherProducts


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.4071.3510.8531.1430.860.8580.8580.7790.4840.5310.4510.5350.4510.52
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.20.40.30.20.20.30.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.40.20.20.40.30.20.20.30.20.10.10.20.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:OtherProducts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

sji:Solar


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.9041.911-0.2995.4291.391.9072.6683.4296.4382.5762.3115.392129.308
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.3-0.11.70.50.40.61.32.80.40.41.76.02.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.3-0.11.70.50.40.61.32.80.40.41.76.02.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:Solar100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value311674485261259534463261266637589302227521345227244425329219154333257141177382281122133350224128122255197111121274198137160331283160151329
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 RevenueFromContractWithCustomerExcludingAssessedTax78.688.5100.083.094.6112.2100.097.2115.2105.0100.096.2112.6117.6100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues dei:LegalEntity

sji:SouthJerseyGasCompany


Revenuesdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value9125117766872401726262272180567623417066831961426268187
Percentage of Revenues29.337.336.625.333.545.137.323.823.342.730.618.633.844.949.329.434.146.243.228.344.556.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.033.036.621.031.750.637.323.126.944.930.617.938.052.849.329.434.146.243.228.344.556.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.0128.2115.3112.4132.5116.8107.4113.9119.8120.90.00.00.00.00.00.00.00.0

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value-13.0-20.666-23.491-11.755-13.51-15.713-16.314-13.344-15.233-12.378-21.676-13.158-18.788-21.77-18.502-14.912-17.793-17.203-15.324-14.224-11.931-16.114-11.034-11.229-12.921-9.621
Percentage of Revenues-4.2-3.1-4.8-4.5-5.2-2.9-3.5-5.1-5.7-1.9-3.7-4.4-8.3-4.2-5.4-6.6-7.3-4.0-4.6-6.5-7.7-4.8-7.8-6.3-3.4-7.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-2.7-4.8-3.7-4.9-3.3-3.5-5.0-6.6-2.0-3.7-4.2-9.3-4.9-5.4-6.6-7.3-4.0-4.6-6.5-7.7-4.8-7.8-6.3-3.4-7.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-30
Value324694509273273549479274282649611315246543364242262443233166349152188395132
Percentage of Revenues104.2103.1104.8104.5105.2102.9103.5105.1105.7101.9103.7104.4108.3104.2105.4106.6107.3104.0106.5107.7104.8107.8106.3103.4107.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax81.991.2104.886.799.5115.5103.5102.1121.7107.1103.7100.4121.9122.5105.4106.6107.3104.0106.5107.7104.8107.8106.3103.4107.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, sji:EnergyManagement, sji:RetailServicesSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.1263.8961013
Percentage of Revenues1.30.64.22.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.00.53.92.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:RetailServicesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyAndRetailServicesSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value163265112141
Percentage of Revenues52.639.443.226.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax41.334.940.929.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyAndRetailServicesSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyOperationsSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value159261101128
Percentage of Revenues51.238.839.124.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax40.334.437.027.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesAndDecarbonizationSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.2056.4232.1546.988
Percentage of Revenues1.31.00.81.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.80.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesAndDecarbonizationSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value4.2056.4232.1546.988
Percentage of Revenues1.31.00.81.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.10.80.81.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:ApplianceServiceOperations


Revenuesus-gaap:
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.4930.4910.5130.514
Percentage of Revenues0.10.20.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.20.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:ApplianceServiceOperations0.00.00.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProduction


Revenuesus-gaap:
Period End2020-09-302019-09-30
Value6.31711
Percentage of Revenues2.44.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.04.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProduction0.00.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment


Revenuesus-gaap:
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.6516.8081112
Percentage of Revenues0.12.62.44.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.12.22.44.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ELKUtilityOperationsSegment


Revenuesus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.0010.2851.3893.1182.7390.892
Percentage of Revenues0.00.10.50.60.60.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.50.70.60.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ELKUtilityOperationsSegment0.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ETGUtilityOperationsSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value53157109375714410930
Percentage of Revenues17.223.422.614.322.327.023.611.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.520.722.611.921.130.323.611.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:ETGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegment


Revenuesus-gaap:
Period End2020-12-312020-09-302019-12-312019-09-30
Value28710328493
Percentage of Revenues59.239.861.535.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.233.061.534.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegment0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-06-302020-03-31
Value144408146387
Percentage of Revenues46.460.656.372.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.553.653.381.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegments0.00.00.00.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGUtilityOperationsSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value91251177668724017262
Percentage of Revenues29.337.336.625.333.545.137.323.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.033.036.621.031.750.637.323.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:UtilityOperations sji:SJGUtilityOperationsSegment0.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:RetailElectricOperations


Revenuesus-gaap:
Period End2020-09-302019-09-30
Value7.69222
Percentage of Revenues2.98.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.48.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:RetailElectricOperations0.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyAndRetailElectricOperationsSegment


Revenuesus-gaap:
Period End2020-09-302019-09-30
Value151158
Percentage of Revenues57.760.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.958.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyAndRetailElectricOperationsSegment0.00.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyOperations


Revenuesus-gaap:
Period End2020-09-302019-09-30
Value143135
Percentage of Revenues54.852.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax45.550.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyOperations0.00.0

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

us-gaap:OperatingSegments, sji:CorporateAndServicesSegment


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1213181112131310
Percentage of Revenues3.92.03.84.44.82.52.83.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.01.83.83.64.62.82.83.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments sji:CorporateAndServicesSegment0.00.00.00.00.00.00.00.0

Unregulated Operating Revenue

us-gaap:UnregulatedOperatingRevenue

us-gaap:UnregulatedOperatingRevenue


Unregulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value16727120315811414717916816022231121715129017616116223018915886149128831021161206164139786956816857629590799515712810390
Percentage of UnregulatedOperatingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.235.641.950.241.530.938.862.869.136.752.969.075.165.451.071.266.554.057.372.255.844.849.859.257.630.442.850.448.339.935.054.046.132.134.951.851.634.845.557.759.547.545.264.659.7

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value68336714668963086216629463656130602858635956591455093890386537403741374737303557352234933480339933783376334930433006301929242707265426282631240523252260224720832061201920761782
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets dei:LegalEntity

sji:SouthJerseyGasCompany


Assetsdei:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3577355435223383334733873348325431833150311829662913293028652736267326272551
Percentage of Assets52.452.952.753.653.953.852.653.152.853.752.350.252.975.374.273.271.570.168.4
Percentage of Assets52.452.952.753.653.953.852.653.152.853.752.350.252.975.374.273.271.570.168.4
Percentage of Assets sji:SouthJerseyGasCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value3240295428291903
Percentage of Assets48.546.447.549.2
Percentage of Assets48.546.447.549.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value-273.781-189.216-225.331-160.072-97.568-196.275-332.185-323.629-245.527-220.558-301.735-555.209-538.674-572.441-661.363-665.046-601.285-556.379-570.524-565.923-569.149-595.565-600.928-520.325-487.612
Percentage of Assets-4.0-2.8-3.4-2.5-1.6-3.1-5.2-5.3-4.1-3.8-5.1-9.4-9.8-14.7-17.1-17.8-16.1-14.8-15.3-15.9-16.2-17.0-17.3-15.3-14.6
Percentage of Assets-4.0-2.8-3.4-2.5-1.6-3.1-5.2-5.3-4.1-3.8-5.1-9.4-9.8-14.7-17.1-17.8-16.1-14.8-15.3-15.9-16.2-17.0-17.3-15.3-14.6
Percentage of Assets us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, sji:EnergyManagement, sji:RetailServicesSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value262729
Percentage of Assets0.40.40.4
Percentage of Assets0.40.40.4
Percentage of Assets us-gaap:OperatingSegments sji:EnergyManagement sji:RetailServicesSegment100.0100.0100.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyAndRetailServicesSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value233202225
Percentage of Assets3.43.03.4
Percentage of Assets3.43.03.4
Percentage of Assets us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyAndRetailServicesSegments100.0100.0100.0

us-gaap:OperatingSegments, sji:EnergyManagement, sji:WholesaleEnergyOperationsSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value206174195
Percentage of Assets3.02.62.9
Percentage of Assets3.02.62.9
Percentage of Assets us-gaap:OperatingSegments sji:EnergyManagement sji:WholesaleEnergyOperationsSegment100.0100.0100.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:DecarbonizationSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value604240
Percentage of Assets0.90.60.6
Percentage of Assets0.90.60.6
Percentage of Assets us-gaap:OperatingSegments sji:EnergyProduction sji:DecarbonizationSegment100.0100.0100.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesAndDecarbonizationSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value221186193
Percentage of Assets3.22.82.9
Percentage of Assets3.22.82.9
Percentage of Assets us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesAndDecarbonizationSegments100.0100.0100.0

us-gaap:OperatingSegments, sji:EnergyProduction, sji:RenewablesSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value160144153
Percentage of Assets2.42.12.3
Percentage of Assets2.42.12.3
Percentage of Assets us-gaap:OperatingSegments sji:EnergyProduction sji:RenewablesSegment100.0100.0100.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProduction


Assetsus-gaap:
Period End2020-09-302019-12-31
Value113154
Percentage of Assets1.82.4
Percentage of Assets1.82.4
Percentage of Assets us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProduction100.0100.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment


Assetsus-gaap:
Period End2020-12-312020-09-302019-12-31
Value153113154
Percentage of Assets2.31.82.4
Percentage of Assets2.31.82.4
Percentage of Assets us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProductionAndApplianceServiceOperationsSegment100.0100.0100.0

us-gaap:OperatingSegments, sji:OnSiteEnergyProductionAndApplianceServiceOperations, sji:OnSiteEnergyProductionSegment


Assetsus-gaap:
Period End2020-12-312019-12-31
Value153154
Percentage of Assets2.32.4
Percentage of Assets2.32.4
Percentage of Assets us-gaap:OperatingSegments sji:OnSiteEnergyProductionAndApplianceServiceOperations sji:OnSiteEnergyProductionSegment100.0100.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:ETGUtilityOperationsSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value26692583256124822458
Percentage of Assets39.138.538.339.338.6
Percentage of Assets39.138.538.339.338.6
Percentage of Assets us-gaap:OperatingSegments sji:UtilityOperations sji:ETGUtilityOperationsSegment100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegment


Assetsus-gaap:
Period End2020-12-312020-09-302019-12-31
Value608358655829
Percentage of Assets90.993.091.6
Percentage of Assets90.993.091.6
Percentage of Assets us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegment100.0100.0100.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGETGAndELKUtilitiesOperationsSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value624761386083
Percentage of Assets91.491.490.9
Percentage of Assets91.491.490.9
Percentage of Assets us-gaap:OperatingSegments sji:UtilityOperations sji:SJGETGAndELKUtilitiesOperationsSegments100.0100.0100.0

us-gaap:OperatingSegments, sji:UtilityOperations, sji:SJGUtilityOperationsSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value35773554352233833348
Percentage of Assets52.452.952.753.652.6
Percentage of Assets52.452.952.753.652.6
Percentage of Assets us-gaap:OperatingSegments sji:UtilityOperations sji:SJGUtilityOperationsSegment100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:RetailElectricOperations


Assetsus-gaap:
Period End2020-09-302019-12-31
Value2130
Percentage of Assets0.30.5
Percentage of Assets0.30.5
Percentage of Assets us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:RetailElectricOperations100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyAndRetailElectricOperationsSegment


Assetsus-gaap:
Period End2020-09-302019-12-31
Value148225
Percentage of Assets2.33.5
Percentage of Assets2.33.5
Percentage of Assets us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyAndRetailElectricOperationsSegment100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyAndRetailElectricOperations, sji:WholesaleEnergyOperations


Assetsus-gaap:
Period End2020-09-302019-12-31
Value126195
Percentage of Assets2.03.1
Percentage of Assets2.03.1
Percentage of Assets us-gaap:OperatingSegments sji:WholesaleEnergyAndRetailElectricOperations sji:WholesaleEnergyOperations100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperations, sji:RetailElectricOperationsSegment


Assetsus-gaap:
Period End2020-12-312019-12-31
Value1430
Percentage of Assets0.20.5
Percentage of Assets0.20.5
Percentage of Assets us-gaap:OperatingSegments sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperations sji:RetailElectricOperationsSegment100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperations, sji:WholesaleEnergyOperationsSegment


Assetsus-gaap:
Period End2020-12-312019-12-31
Value195195
Percentage of Assets2.93.1
Percentage of Assets2.93.1
Percentage of Assets us-gaap:OperatingSegments sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperations sji:WholesaleEnergyOperationsSegment100.0100.0

us-gaap:OperatingSegments, sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperations, sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperationsSegment


Assetsus-gaap:
Period End2020-12-312019-12-31
Value210225
Percentage of Assets3.13.5
Percentage of Assets3.13.5
Percentage of Assets us-gaap:OperatingSegments sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperations sji:WholesaleEnergyRetailGasAndOtherAndRetailElectricOperationsSegment100.0100.0

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

us-gaap:OperatingSegments, sji:CorporateAndServicesSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value394281373249403
Percentage of Assets5.84.25.64.06.3
Percentage of Assets5.84.25.64.06.3
Percentage of Assets us-gaap:OperatingSegments sji:CorporateAndServicesSegment100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, sji:MidstreamSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value8.74894929083
Percentage of Assets0.11.41.41.41.3
Percentage of Assets0.11.41.41.41.3
Percentage of Assets us-gaap:OperatingSegments sji:MidstreamSegment100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementOperatingActivitiesSegment

us-gaap:SegmentDiscontinuedOperations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1.7371.7561.7751.791.7371.7541.7661.7781.7421.7581.7771.7811.7511.7511.7571.7691.7781.7491.7561.7661.7761.545
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.0
Percentage of Assets us-gaap:SegmentDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value68336714668963086216629463656130602858635956591455093890386537403741374737303557352234933480339933783376334930433006301929242707265426282631240523252260224720832061201920761782
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity dei:LegalEntity

sji:SouthJerseyGasCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3577355435223383334733873348325431833150311829662913293028652736267326272551
Percentage of LiabilitiesAndStockholdersEquity52.452.952.753.653.953.852.653.152.853.752.350.252.975.374.273.271.570.168.4
Percentage of Assets52.452.952.753.653.953.852.653.152.853.752.350.252.975.374.273.271.570.168.4
Percentage of Assets sji:SouthJerseyGasCompany100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value3240295428291903
Percentage of LiabilitiesAndStockholdersEquity48.546.447.549.2
Percentage of Assets48.546.447.549.2
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value188717371660166614971423141614761514126712341303128111921289127710931037946969971932863871865827757770777736695672667624595606610570543
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.625.924.826.823.822.423.124.525.821.320.923.732.930.934.636.331.329.827.928.728.827.828.429.028.628.328.029.029.628.028.928.929.527.828.629.430.227.530.5

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

sji:SouthJerseyGasCompany, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value-27.454-27.454-27.454-27.454-21.901-21.901-21.901-21.901-25.507-25.507-25.507-25.507-14.417-14.417-14.417-14.417-12.22
Percentage of StockholdersEquity0.0-1.6-1.8-1.9-1.5-1.5-1.4-1.7-2.1-2.0-2.0-2.10.00.00.0-1.1-1.2
Percentage of Assets-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.7-0.7-0.4-0.4-0.4-0.4-0.4
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-0.396-0.405-0.413-0.421-0.431-0.44-0.448-0.456-0.49-0.517
Percentage of StockholdersEquity0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value-27.85-27.859-27.867-27.875-22.332-22.341-22.349-22.357-25.972-25.98-25.988-25.997-14.913-14.92-14.927-14.934-12.862-14.479
Percentage of StockholdersEquity0.0-1.7-1.9-2.0-1.6-1.5-1.5-1.8-2.1-2.0-2.0-2.20.00.00.0-1.2-1.2-1.6
Percentage of Assets-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.7-0.7-0.4-0.4-0.4-0.4-0.4-0.4
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value1660142312671192
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets24.822.421.330.9
Percentage of Assets srt:ParentCompany51.248.244.862.7

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value-32.124-32.124-32.124-32.124-25.626-25.626-25.626-25.626-36.262-36.262-36.262-36.262-25.342-22.145
Percentage of StockholdersEquity0.0-1.9-2.1-2.3-1.8-1.7-1.7-2.0-2.9-2.8-2.8-3.0-2.0-2.1
Percentage of Assets-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.6-0.7-0.9-0.9-0.7-0.6
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-0.302-0.311-0.319-0.327-0.337-0.346-0.354-0.362-0.396-1.932
Percentage of StockholdersEquity0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.128
Percentage of StockholdersEquity0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-31
Value-32.533-32.542-32.55-32.558-26.07-26.079-26.087-26.095-36.74-36.748-36.756-36.765-27.381-24.499-30.258
Percentage of StockholdersEquity0.0-2.0-2.2-2.3-1.8-1.8-1.7-2.1-3.0-2.8-2.9-3.1-2.1-2.4-3.2
Percentage of Assets-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.6-0.7-0.9-1.0-0.7-0.7-0.9
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value5274885063544224626524054285206637372424413438323356436473357375396431478528580566425474551482365393441394323304294340326360348423368
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.77.37.65.66.87.310.36.67.18.911.112.544.010.611.48.69.511.712.710.110.711.312.414.115.617.216.914.015.818.316.513.514.816.815.013.513.113.015.215.717.517.320.420.7

us-gaap:AssetsCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value156194174127150172197147151224198134153201196114128157149
Percentage of AssetsCurrent29.739.734.535.935.537.330.336.535.343.229.918.26.348.644.835.336.136.031.6
Percentage of Assets2.32.92.62.02.42.73.12.42.53.83.32.32.85.25.13.13.44.24.0
Percentage of Assets sji:SouthJerseyGasCompany4.45.55.03.84.55.15.94.54.87.16.44.55.36.96.94.24.86.05.9

us-gaap:AssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Assets
Period End2020-12-312019-12-312018-12-312017-12-31
Value212338314641
Percentage of AssetsCurrent42.051.847.5146.2
Percentage of Assets3.25.35.316.6
Percentage of Assets srt:ParentCompany6.611.411.133.7

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
Value873034107.267106.4174.6021210303.314226.3127.819131015186.9414.164.253.8772.0583.217.2144.1713.7837.3978.1713.8184.3942.261.3424.6384.1741.6333.5477.5382.6110.8223.3082.3632.1854.1654.4933.8235.77511
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 Assets1.30.50.50.20.10.20.10.10.20.20.50.10.40.20.20.40.30.40.50.20.10.10.10.10.10.20.10.10.20.30.10.20.10.10.20.20.10.20.30.10.00.20.10.00.00.00.20.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue dei:LegalEntity

sji:SouthJerseyGasCompany


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
Value2.065151.5981.5282.1442.562.6781.3471.6171.7561.9841.6471.6343.3981.7070.4041.0964.2551.359
Percentage of CashAndCashEquivalentsAtCarryingValue2.352.64.715.129.524.841.729.313.316.96.649.77.353.821.83.010.828.37.4
Percentage of Assets0.00.20.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.10.0
Percentage of Assets sji:SouthJerseyGasCompany0.10.40.00.00.10.10.10.00.10.10.10.10.10.10.10.00.00.20.1

us-gaap:CashAndCashEquivalentsAtCarryingValue dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities

sji:MarinaEnergyLlc, sji:Annadale, srt:Subsidiaries


Cash
Period End2020-12-31
Value23
Percentage of CashAndCashEquivalentsAtCarryingValue70.2
Percentage of Assets0.4
Percentage of Assets sji:MarinaEnergyLlc sji:Annadale srt:Subsidiaries0.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.620.107250.476
Percentage of CashAndCashEquivalentsAtCarryingValue7.71.784.46.1
Percentage of Assets0.00.00.40.0
Percentage of Assets srt:ParentCompany0.10.00.90.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value873141101832282031183113177323391911173150425269
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.30.50.60.20.30.50.40.30.50.30.50.232.20.61.00.50.30.50.91.41.21.52.1

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents dei:LegalEntity

sji:SouthJerseyGasCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-31
Value2.099176.4241.7275.5927.6466.7513.4319.4153.2243.2622.1792.1395.724.6191.2952.6384.2871.3919.4991.5817.5449.739
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents2.454.815.416.830.023.923.816.430.217.910.316.40.124.811.66.722.023.94.418.73.714.314.0
Percentage of Assets0.00.30.10.00.10.10.10.10.20.10.10.00.00.10.10.00.10.10.00.30.00.20.3
Percentage of Assets sji:SouthJerseyGasCompany0.10.50.20.10.20.20.20.10.30.10.10.10.10.20.20.00.10.20.10.00.00.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2.620.107250.476121.708
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents6.30.480.01.240.33.2
Percentage of Assets0.00.00.40.00.30.0
Percentage of Assets srt:ParentCompany0.10.00.90.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent us-gaap:ConsolidatedEntities

us-gaap:AccountsReceivableNetCurrent

srt:ParentCompany


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.0430.0570.0380.052
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1479000.01749000.02561000.01061000.01139000.01146000.01164000.01798000.01751000.01744000.01743000.04574000.04200000.04233000.04239000.06594000.06965000.06916000.06753000.06798000.06815000.06762000.05088000.01937000.02123000.02112000.02125000.02200000.02804000.02851000.02798000.02758000.02647000.02609000.02618000.02729000.02888000.02918000.02794000.03656000.03879000.04037000.03796000.06877000.0
Percentage of InventoryRawMaterialsAndSupplies100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.20.20.20.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.4

us-gaap:InventoryRawMaterialsAndSupplies dei:LegalEntity

sji:SouthJerseyGasCompany


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value619000.0619000.0619000.0619000.0619000.0619000.0619000.0619000.0619000.0619000.0619000.0706000.0796000.0824000.0825000.0890000.0947000.0909000.0914000.0
Percentage of InventoryRawMaterialsAndSupplies41.935.424.258.354.354.053.234.435.435.535.515.419.019.519.513.513.613.113.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value212329384138434336332626192928333331313438464027262518212025171918151115131413171414107.412
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.40.60.70.60.70.70.60.60.40.50.40.80.70.90.90.90.81.01.11.31.20.80.80.80.60.70.70.80.60.70.70.60.40.70.60.60.60.80.70.70.50.4

us-gaap:OtherAssetsCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value9.2068.871219222125242018111010121214151313
Percentage of OtherAssetsCurrent42.838.343.750.755.156.057.756.956.955.942.539.354.543.644.943.045.342.344.2
Percentage of Assets0.10.10.20.30.40.30.40.40.30.30.20.20.20.30.30.40.40.40.4
Percentage of Assets sji:SouthJerseyGasCompany0.30.20.40.60.70.60.70.80.60.60.40.40.40.40.40.50.60.50.5

us-gaap:OtherAssetsCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value1925195.017
Percentage of OtherAssetsCurrent66.658.571.917.8
Percentage of Assets0.30.40.30.1
Percentage of Assets srt:ParentCompany0.60.90.70.3

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value14788292625151151152152161171745741780824821821796792784785691654626622536512495486407351331328244231225221185185176169132
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.21.40.50.40.42.52.52.62.62.73.119.219.220.922.021.922.022.422.522.522.620.319.418.618.617.617.116.416.615.013.212.612.510.210.010.09.88.99.08.88.27.4

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

sji:FuelCellAssets


Property
Period End2020-12-31
Value80
Percentage of PropertyPlantAndEquipmentGross54.5
Percentage of Assets1.2
Percentage of Assets sji:FuelCellAssets0.0

sji:SolarAssets


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value400.00.0582652
Percentage of PropertyPlantAndEquipmentGross27.30.00.078.679.4
Percentage of Assets0.60.00.015.117.5
Percentage of Assets sji:SolarAssets0.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentOtherTypes


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value2625263344
Percentage of PropertyPlantAndEquipmentGross18.2100.017.14.55.5
Percentage of Assets0.40.40.40.91.2
Percentage of Assets us-gaap:PropertyPlantAndEquipmentOtherTypes0.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value35131314135654535249482051941831731611511391281171081009284777064575247433936343129262525242320
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.20.20.20.20.90.90.90.90.80.95.35.04.94.64.34.03.93.63.43.12.92.72.52.32.32.11.91.81.81.61.51.41.41.41.31.21.21.31.21.11.1

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1500000.01500000.01400000.01400000.01300000.01300000.01500000.01500000.01500000.01500000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentNet

sji:MarinaEnergyLlc, sji:Annadale, srt:Subsidiaries


Property
Period End2020-12-31
Value80
Percentage of PropertyPlantAndEquipmentNet100.0
Percentage of Assets1.2
Percentage of Assets sji:MarinaEnergyLlc sji:Annadale srt:Subsidiaries0.0

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

sji:MarinaEnergyLlc, srt:Subsidiaries


Property
Period End2020-09-30
Value58
Percentage of PropertyPlantAndEquipmentNet0.0
Percentage of Assets0.9
Percentage of Assets sji:MarinaEnergyLlc srt:Subsidiaries0.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

srt:ParentCompany


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value2958255824581209
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0
Percentage of Assets44.240.241.331.3
Percentage of Assets srt:ParentCompany91.386.686.963.5

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value7067067067067027027027057037347347593.5783.5783.5784.8384.8384.84.8388.1398.1398.1398.880.0
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets10.310.510.611.211.311.211.011.511.712.512.312.80.10.10.10.10.10.10.10.20.20.20.30.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

sji:EnerConnexLLC


Goodwillus-gaap:
Period End2020-08-07
Value4.89
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets sji:EnerConnexLLC0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

sji:ETGUtilityOperations


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value700700700700700700700700700730
Percentage of Goodwill99.099.099.099.099.799.799.799.299.599.5
Percentage of Assets10.210.410.511.111.311.111.011.411.612.3
Percentage of Assets sji:ETGUtilityOperations0.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateAndOther


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value6.86.86.86.81.91.91.91.8
Percentage of Goodwill1.01.01.01.00.30.30.30.3
Percentage of Assets0.10.10.10.10.00.00.00.0
Percentage of Assets us-gaap:CorporateAndOther0.00.00.00.00.00.00.00.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312017-12-31
Value1615171411121326252812
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.30.20.20.20.20.40.40.50.3

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

sji:AssetManagementAgreement


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3.845.126.47.688.96101116
Percentage of FiniteLivedIntangibleAssetsNet23.832.637.153.579.881.683.159.2
Percentage of Assets0.10.10.10.10.10.20.20.3
Percentage of Assets sji:AssetManagementAgreement0.00.00.00.00.00.00.00.0

sji:InterconnectionAndPowerPurchaseAgreements


Finite
Period End2021-06-302021-03-312020-12-31
Value4.0694.1344.296
Percentage of FiniteLivedIntangibleAssetsNet25.226.324.9
Percentage of Assets0.10.10.1
Percentage of Assets sji:InterconnectionAndPowerPurchaseAgreements0.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value8.2096.4476.5626.6772.2672.3072.34711
Percentage of FiniteLivedIntangibleAssetsNet50.941.138.046.520.218.416.941.0
Percentage of Assets0.10.10.10.10.00.00.00.2
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302020-12-312020-09-302019-12-312019-06-302019-03-312019-01-01
Value6.61.9291.61.92.72.73.1
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.00.00.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value15313714311510710611111611611511612496100989291918367666564626161616060606057565352524542414238322923
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.02.11.81.71.71.71.91.92.01.92.11.82.62.52.52.42.42.21.91.91.91.91.91.81.81.82.02.02.02.12.12.12.12.02.22.01.91.92.01.91.61.41.3

us-gaap:OtherAssetsNoncurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value30262523222023232320171918191717161612
Percentage of OtherAssetsNoncurrent19.619.017.620.220.919.721.020.319.917.415.116.019.419.017.618.317.917.914.7
Percentage of Assets0.40.40.40.40.40.30.40.40.40.30.30.30.30.50.40.50.40.40.3
Percentage of Assets sji:SouthJerseyGasCompany0.80.70.70.70.70.60.70.70.70.60.60.70.60.70.60.60.60.60.5

us-gaap:OtherAssetsNoncurrent dei:LegalEntity, sji:AssetAcquisition, us-gaap:ConsolidatedEntities

sji:MarinaEnergyLlc, sji:Annadale, srt:Subsidiaries


Other
Period End2020-12-31
Value4.3
Percentage of OtherAssetsNoncurrent3.0
Percentage of Assets0.1
Percentage of Assets sji:MarinaEnergyLlc sji:Annadale srt:Subsidiaries0.0

us-gaap:OtherAssetsNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value65565350
Percentage of OtherAssetsNoncurrent45.950.446.451.5
Percentage of Assets1.00.90.91.3
Percentage of Assets srt:ParentCompany2.01.91.92.7

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
Value226218256162160187232245288332410383262259284208246272243141166151186189193221272211242295259200192217193111109128153131160154165123
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 Assets3.33.23.82.62.63.03.64.04.85.76.96.54.86.77.45.66.67.36.54.04.74.35.45.65.76.68.27.08.19.88.97.47.28.37.34.64.75.76.86.37.87.68.07.0

us-gaap:AccountsPayableCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Accounts
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.1123.0886.37817
Percentage of AccountsPayableCurrent2.41.31.66.1
Percentage of Assets0.10.00.10.4
Percentage of Assets srt:ParentCompany0.20.10.20.9

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value653000.0514000.0479000.0321000.0347000.0186000.0001772000.01772000.01772000.0407000.0259000.0
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value34302927270.02626260.02323220.02121210.02020180.01717170.01515150.01414140.01212120.01010100.0
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0
Percentage of Assets0.50.50.50.40.40.00.40.40.50.00.40.40.60.00.60.60.60.00.60.60.50.00.50.50.50.00.50.50.50.00.50.50.50.00.50.50.50.00.50.50.50.0

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
Value5897521163110392615651731160716461205158024712114924883684734681952812758698832806834821850604701812764709632597651552531582587501472456640478
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 Assets8.611.217.417.514.924.927.226.227.320.626.541.838.423.822.818.319.618.225.522.821.520.023.923.724.724.325.419.823.326.926.226.223.822.724.823.022.925.826.224.122.922.630.826.9

us-gaap:LiabilitiesCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value210189254299323724769711615257321551508519353216226219509
Percentage of LiabilitiesCurrent35.625.221.927.134.946.344.444.337.421.420.422.324.156.240.031.730.932.353.5
Percentage of Assets3.12.83.84.75.211.512.111.610.24.45.49.39.213.39.15.86.15.913.7
Percentage of Assets sji:SouthJerseyGasCompany5.95.37.28.89.721.423.021.919.38.210.318.617.517.712.37.98.58.420.0

us-gaap:LiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value597652827319
Percentage of LiabilitiesCurrent51.437.752.336.2
Percentage of Assets8.910.213.98.3
Percentage of Assets srt:ParentCompany18.422.129.216.8

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
Value901421421421174704673384783337331482136826363101531231231244282977851491497485212121252525250.00.02.1872.187255011135
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.32.12.12.31.97.57.45.57.95.712.325.124.86.81.70.30.40.96.26.56.90.80.82.32.54.44.52.42.80.70.70.80.91.01.01.00.00.00.10.11.22.55.42.0

us-gaap:LongTermDebtCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value5552525227420417338338181823826326363101515215
Percentage of LongTermDebtCurrent61.537.037.037.023.789.489.3100.070.85.72.616.119.3100.0100.0100.0100.049.993.1
Percentage of Assets0.80.80.80.80.46.76.65.55.60.30.34.04.86.81.70.30.40.45.8
Percentage of Assets sji:SouthJerseyGasCompany1.61.51.51.60.812.412.510.410.60.60.68.19.19.02.20.40.60.68.5

us-gaap:LongTermDebtCurrent dei:LegalEntity, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

sji:SouthJerseyGasCompany, sji:AnnualPaymentsBeginningin2021FinalPaymentDuein20264.84Percent, us-gaap:Mortgages


Long
Period End2020-12-31
Value2.5
Percentage of LongTermDebtCurrent1.8
Percentage of Assets0.0
Percentage of Assets sji:SouthJerseyGasCompany sji:AnnualPaymentsBeginningin2021FinalPaymentDuein20264.84Percent us-gaap:Mortgages0.0

sji:SouthJerseyGasCompany, sji:PaymentsDueAnnuallyBeginningin2020FinalPaymentDuein20243.00Percent, us-gaap:Mortgages


Long
Period End2020-12-31
Value10.0
Percentage of LongTermDebtCurrent7.0
Percentage of Assets0.1
Percentage of Assets sji:SouthJerseyGasCompany sji:PaymentsDueAnnuallyBeginningin2020FinalPaymentDuein20243.00Percent us-gaap:Mortgages0.0

sji:SouthJerseyGasCompany, sji:PaymentsDueAnnuallyBeginningin2020FinalPaymentDuein20243.03Percent, us-gaap:Mortgages


Long
Period End2020-12-31
Value7.0
Percentage of LongTermDebtCurrent4.9
Percentage of Assets0.1
Percentage of Assets sji:SouthJerseyGasCompany sji:PaymentsDueAnnuallyBeginningin2020FinalPaymentDuein20243.03Percent us-gaap:Mortgages0.0

sji:SouthJerseyGasCompany, sji:SeriesDue2026493Percent, us-gaap:Mortgages


Long
Period End2020-12-31
Value7.5
Percentage of LongTermDebtCurrent5.3
Percentage of Assets0.1
Percentage of Assets sji:SouthJerseyGasCompany sji:SeriesDue2026493Percent us-gaap:Mortgages0.0

us-gaap:LongTermDebtCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value90507150.0
Percentage of LongTermDebtCurrent63.010.797.40.0
Percentage of Assets1.30.812.00.0
Percentage of Assets srt:ParentCompany2.81.725.30.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value619000.0581000.0759000.0961000.01170000.01326000.01519000.01644000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:OperatingLeaseLiabilityCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value49000.080000.0113000.0146000.0166000.0169000.0178000.0
Percentage of OperatingLeaseLiabilityCurrent8.410.511.812.512.511.110.8
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value404027222630352926273622219.785158.48118.635155.8496.0537.222117.2876.2617.584126.5946.6086.8589.215.8347.1367.342115.8585.9547.075105.1255.1945.6649.04317
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.40.40.40.50.60.50.40.50.60.40.40.30.40.20.30.20.40.20.20.20.30.20.20.20.40.20.20.20.30.20.30.30.40.20.30.30.50.20.30.30.41.0

us-gaap:OtherLiabilitiesCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value6.1627.1277.7986.7747.6911212107.6647.7599.4446.0665.9225.7557.0274.0123.9465.8338.011
Percentage of OtherLiabilitiesCurrent15.217.628.230.029.042.335.237.028.628.126.227.527.758.844.347.334.367.652.6
Percentage of Assets0.10.10.10.10.10.20.20.20.10.10.20.10.10.10.20.10.10.20.2
Percentage of Assets sji:SouthJerseyGasCompany0.20.20.20.20.20.40.40.30.20.20.30.20.20.20.20.10.10.20.3

us-gaap:OtherLiabilitiesCurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value2325277.763
Percentage of OtherLiabilitiesCurrent84.671.477.348.9
Percentage of Assets0.30.40.50.2
Percentage of Assets srt:ParentCompany0.70.91.00.4

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value8.159146.0254.8393.0289.3112.2352.5672.671105.8813.9242.5296.8142.9322.4672.3586.2882.0823.1342.8323.7372.3362.3533.019.1972.3282.42.4119.6773.2342.8142.4628.9182.1562.0942.0686.1023.1682.8963.199136.7096.518
Percentage of TaxesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.20.10.10.00.10.00.00.00.20.10.10.00.20.10.10.10.20.10.10.10.10.10.10.10.30.10.10.10.30.10.10.10.30.10.10.10.30.10.10.20.70.30.4

us-gaap:TaxesPayableCurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Taxes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value5.3128.5433.9422.7851.9735.8751.9071.8352.1417.0121.8911.6651.5275.7851.761.5241.3924.9460.855
Percentage of TaxesPayableCurrent65.158.765.457.665.263.185.371.580.265.432.242.460.484.960.061.859.078.741.1
Percentage of Assets0.10.10.10.00.00.10.00.00.00.10.00.00.00.10.00.00.00.10.0
Percentage of Assets sji:SouthJerseyGasCompany0.10.20.10.10.10.20.10.10.10.20.10.10.10.20.10.10.10.20.0

Liabilities Noncurrent

us-gaap:LiabilitiesNoncurrent

us-gaap:LiabilitiesNoncurrent


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
Value11711155108210411058116411391082110710251001927687709666654661679680668655655604708714724707640627631652660650652641590580583611561556550525445
Percentage of LiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets17.117.216.216.517.018.517.917.718.417.516.815.712.518.217.217.517.718.118.218.818.618.817.420.821.221.421.121.020.920.922.324.424.524.824.424.524.925.827.227.027.027.325.325.0

us-gaap:LiabilitiesNoncurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value970963947921916958942920924931913860856864832789775786778
Percentage of LiabilitiesNoncurrent82.883.487.688.486.682.382.785.083.590.891.292.7124.6121.8124.9120.6117.2115.8114.4
Percentage of Assets14.214.314.214.614.715.214.815.015.315.915.314.515.522.221.521.120.721.020.9
Percentage of Assets sji:SouthJerseyGasCompany27.127.126.927.227.428.328.128.329.029.629.329.029.429.529.128.829.029.930.5

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value32683206295026742680254025682360228024502867276027701238120411911082111110471040107510751035101594510091009890731701601626626626591541426426451
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.847.844.142.443.140.440.438.537.841.848.146.750.331.831.231.828.929.728.129.330.530.829.829.928.030.133.229.624.224.022.223.623.823.824.623.318.919.021.7

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3177306327762531256620672070202217982117210612811403974112211801066107980880883110461006937859859859935805710680580601601601566541426424424426401340312
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 Assets46.545.641.540.141.332.832.533.029.836.135.421.725.525.129.131.628.528.821.722.723.630.028.927.625.425.525.730.726.823.523.321.422.722.922.923.523.318.918.920.420.719.916.417.6

us-gaap:LongTermDebtNoncurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value100310131016899934544547554564884874573558558758807742694423
Percentage of LongTermDebtNoncurrent31.633.136.635.536.426.326.427.431.441.841.544.839.857.367.568.469.664.352.4
Percentage of Assets14.715.115.214.315.08.68.69.19.415.114.79.710.114.319.621.619.818.511.3
Percentage of Assets sji:SouthJerseyGasCompany28.028.528.926.627.916.116.317.117.728.128.019.319.219.126.529.527.826.416.6

us-gaap:LongTermDebtNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value964854708364
Percentage of LongTermDebtNoncurrent34.741.333.632.5
Percentage of Assets14.413.411.99.4
Percentage of Assets srt:ParentCompany29.828.925.019.2

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value181188149116134133928085
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.82.21.82.22.11.41.31.4

us-gaap:DeferredIncomeTaxLiabilitiesNet dei:LegalEntity

sji:SouthJerseyGasCompany


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value428431403387390389357346325
Percentage of DeferredIncomeTaxLiabilitiesNet236.5228.7269.9333.4290.3291.8388.0429.7379.7
Percentage of Assets6.36.46.06.16.36.25.65.75.5
Percentage of Assets sji:SouthJerseyGasCompany12.012.111.511.511.711.510.710.710.5

Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value130132135114114114114112111110110114105104101918987958179777610310098115616058579997941059189861097775737169
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.02.01.81.81.81.81.81.81.91.81.91.92.72.62.52.42.32.62.32.32.22.23.03.02.93.42.02.01.92.03.73.73.64.03.83.83.84.93.73.73.63.53.9

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Pension
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value11711711610510110099999796969492918879777581
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent90.188.786.691.988.588.387.788.688.287.787.282.287.887.587.586.386.586.585.9
Percentage of Assets1.71.71.71.71.61.61.61.61.61.61.61.61.72.32.32.12.12.02.2
Percentage of Assets sji:SouthJerseyGasCompany3.33.33.33.13.03.03.03.13.13.13.13.23.23.13.12.92.92.93.2

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

sji:SouthJerseyGasCompany, us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1321111009279
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent98.298.191.791.083.2
Percentage of Assets2.01.81.72.42.1
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Pension
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1471231119785
Percentage of PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent109.4108.0101.296.290.3
Percentage of Assets2.21.91.92.52.3
Percentage of Assets us-gaap:PensionPlansDefinedBenefit0.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302010-12-312009-12-31
Value7425000.06124000.05995000.04236000.00963000.0
Percentage of MinorityInterest100.0100.0100.0100.00.0100.0
Percentage of Assets0.10.10.10.10.00.1

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Minority
Period End2020-12-31
Value5995000.0
Percentage of MinorityInterest100.0
Percentage of Assets0.1
Percentage of Assets srt:ParentCompany0.2

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
Value885312151114171921252628289.099.4369.4479.628101020212222131314141414151617151619131313141515161619
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.30.80.20.20.20.20.30.30.40.40.40.50.50.20.20.30.30.30.30.60.60.60.70.40.40.40.40.50.50.50.60.60.60.60.70.60.60.60.70.80.80.80.81.1

us-gaap:OtherLiabilitiesNoncurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value274.7945.0764.6164.5954.6444.5764.2624.2225.2564.8565.0044.8894.7384.9344.8754.7674.5794.97
Percentage of OtherLiabilitiesNoncurrent31.68.940.730.240.233.125.822.019.420.818.217.317.052.152.351.649.545.647.0
Percentage of Assets0.40.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets sji:SouthJerseyGasCompany0.80.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.2

us-gaap:OtherLiabilitiesNoncurrent us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value11232625
Percentage of OtherLiabilitiesNoncurrent93.3134.9100.0273.8
Percentage of Assets0.20.40.40.7
Percentage of Assets srt:ParentCompany0.40.80.91.4

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1298000.0988000.01120000.01069000.0681000.0545000.0775000.01081000.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:OperatingLeaseLiabilityNoncurrent dei:LegalEntity

sji:SouthJerseyGasCompany


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value139000.0149000.0157000.0167000.0188000.0229000.0270000.0
Percentage of OperatingLeaseLiabilityNoncurrent14.113.314.724.534.529.525.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value465000.0348000.0348000.0508000.0376000.01075000.01080000.01081000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo dei:LegalEntity

sji:SouthJerseyGasCompany


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value21000.021000.039000.039000.0150000.0152000.0151000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo6.06.07.710.414.014.114.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value307000.0190000.0190000.0323000.0190000.0233000.0233000.0233000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree dei:LegalEntity

sji:SouthJerseyGasCompany


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value19000.019000.021000.021000.039000.039000.039000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree10.010.06.511.116.716.716.7
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value281000.0165000.0165000.0166000.034000.065000.065000.065000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour dei:LegalEntity

sji:SouthJerseyGasCompany


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12000.012000.019000.019000.021000.021000.021000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour7.37.311.455.932.332.332.3
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value150000.0140000.012000.034000.034000.034000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value180000.0117000.0105000.0114000.0114000.0114000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value6600000.01917000.01600000.01879000.02030000.01851000.01871000.02300000.02700000.03100000.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.00.00.00.00.00.00.0

us-gaap:OperatingLeaseLiability dei:LegalEntity

sji:SouthJerseyGasCompany


Operating
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312019-01-01
Value188000.0200000.0300000.0300000.0400000.0400000.0448000.0500000.0
Percentage of OperatingLeaseLiability11.810.614.816.221.417.416.616.1
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.00.0

us-gaap:OperatingLeaseLiability us-gaap:PropertyPlantAndEquipmentByType

us-gaap:Equipment


Operating
Period End2020-12-312020-06-302020-03-312019-12-31
Value600000.0200000.0200000.0300000.0
Percentage of OperatingLeaseLiability31.310.69.916.2
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:Equipment0.00.00.00.0

us-gaap:RealEstate


Operating
Period End2020-12-312020-06-302020-03-312019-12-31
Value1300000.01700000.01700000.01500000.0
Percentage of OperatingLeaseLiability67.890.583.781.0
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:RealEstate0.00.00.00.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2036000.01678000.01988000.02138000.01926000.01935000.02376000.02825000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue dei:LegalEntity

sji:SouthJerseyGasCompany


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value216000.0258000.0301000.0346000.0386000.0436000.0489000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue12.913.014.118.019.918.417.3
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value119000.0109000.0109000.0108000.075000.064000.082000.0100000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount dei:LegalEntity

sji:SouthJerseyGasCompany


Lessee
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value28000.029000.031000.033000.032000.038000.041000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount25.726.628.744.050.046.341.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets sji:SouthJerseyGasCompany0.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value188717371660166614971423141614761514126712341303128111921289127710931037946969971932863871865827757770777736695672667624595606610570543
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.625.924.826.823.822.423.124.525.821.320.923.732.930.934.636.331.329.827.928.728.827.828.429.028.628.328.029.029.628.028.928.929.527.828.629.430.227.530.5

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

sji:SouthJerseyGasCompany, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value-27.454-27.454-27.454-27.454-21.901-21.901-21.901-21.901-25.507-25.507-25.507-25.507-14.417-14.417-14.417-14.417-12.22
Percentage of StockholdersEquity0.0-1.6-1.8-1.9-1.5-1.5-1.4-1.7-2.1-2.0-2.0-2.10.00.00.0-1.1-1.2
Percentage of Assets-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.7-0.7-0.4-0.4-0.4-0.4-0.4
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-0.396-0.405-0.413-0.421-0.431-0.44-0.448-0.456-0.49-0.517
Percentage of StockholdersEquity0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312014-12-31
Value-27.85-27.859-27.867-27.875-22.332-22.341-22.349-22.357-25.972-25.98-25.988-25.997-14.913-14.92-14.927-14.934-12.862-14.479
Percentage of StockholdersEquity0.0-1.7-1.9-2.0-1.6-1.5-1.5-1.8-2.1-2.0-2.0-2.20.00.00.0-1.2-1.2-1.6
Percentage of Assets-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.7-0.7-0.4-0.4-0.4-0.4-0.4-0.4
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value1660142312671192
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets24.822.421.330.9
Percentage of Assets srt:ParentCompany51.248.244.862.7

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value-32.124-32.124-32.124-32.124-25.626-25.626-25.626-25.626-36.262-36.262-36.262-36.262-25.342-22.145
Percentage of StockholdersEquity0.0-1.9-2.1-2.3-1.8-1.7-1.7-2.0-2.9-2.8-2.8-3.0-2.0-2.1
Percentage of Assets-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.6-0.7-0.9-0.9-0.7-0.6
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-31
Value-0.302-0.311-0.319-0.327-0.337-0.346-0.354-0.362-0.396-1.932
Percentage of StockholdersEquity0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.01-0.128
Percentage of StockholdersEquity0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-31
Value-32.533-32.542-32.55-32.558-26.07-26.079-26.087-26.095-36.74-36.748-36.756-36.765-27.381-24.499-30.258
Percentage of StockholdersEquity0.0-2.0-2.2-2.3-1.8-1.8-1.7-2.1-3.0-2.8-2.9-3.1-2.1-2.4-3.2
Percentage of Assets-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.6-0.7-0.9-1.0-0.7-0.7-0.9
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value189417431666163116661497142314161476151412671234130312811192122112791307128912671037932827736624570544516481
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 Assets27.726.024.925.926.823.822.423.124.525.821.320.923.732.930.932.734.234.934.635.629.827.828.328.027.827.530.60.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest dei:LegalEntity

sji:SouthJerseyGasCompany


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value13931387130312641173116010891067107810761008980989988921922928926839
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest73.679.678.277.570.477.576.575.373.171.179.679.475.977.177.375.672.670.865.1
Percentage of Assets20.420.719.520.018.918.417.117.417.918.416.916.618.025.423.824.724.824.722.5
Percentage of Assets sji:SouthJerseyGasCompany39.039.037.037.435.134.332.532.833.934.232.333.134.033.732.233.734.735.332.9

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

sji:SouthJerseyGasCompany, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value-31.219-27.454-21.901-25.507
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.9-1.9-1.7-2.1
Percentage of Assets-0.5-0.4-0.4-0.7
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value-0.387-0.421-0.456-0.49
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-31.59-31.598-31.606-27.85-27.859-27.867-27.875-22.332-22.341-22.349-22.357-25.997
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-1.7-1.8-1.9-1.7-1.7-1.9-2.0-1.6-1.5-1.5-1.8-2.2
Percentage of Assets-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.7
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value465465465465365355355355355355355355
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest24.626.727.928.521.923.825.025.124.123.528.129.8
Percentage of Assets6.86.97.07.45.95.75.65.85.96.16.09.2
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.0

sji:SouthJerseyGasCompany, us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value954947864820830826756727739737668585
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest50.454.451.850.349.855.253.151.450.148.752.849.1
Percentage of Assets14.014.112.913.013.413.111.911.912.312.611.215.2
Percentage of Assets sji:SouthJerseyGasCompany us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value1666142312671192
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0
Percentage of Assets24.922.421.330.9
Percentage of Assets srt:ParentCompany51.448.244.862.7

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

srt:ParentCompany, us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value-38.216-32.558-26.095-36.765
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.3-2.3-2.1-3.1
Percentage of Assets-0.6-0.5-0.4-1.0
Percentage of Assets srt:ParentCompany us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.0

srt:ParentCompany, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value12181027843709
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest73.172.266.659.5
Percentage of Assets18.216.114.218.4
Percentage of Assets srt:ParentCompany us-gaap:AdditionalPaidInCapital0.00.00.00.0

srt:ParentCompany, us-gaap:CommonStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value12511510699
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest7.58.18.48.3
Percentage of Assets1.91.81.82.6
Percentage of Assets srt:ParentCompany us-gaap:CommonStock0.00.00.00.0

srt:ParentCompany, us-gaap:NoncontrollingInterest


Stockholders
Period End2020-12-31
Value5.995
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.4
Percentage of Assets0.1
Percentage of Assets srt:ParentCompany us-gaap:NoncontrollingInterest0.0

srt:ParentCompany, us-gaap:Parent


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value1660142312671192
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.6100.0100.0100.0
Percentage of Assets24.822.421.330.9
Percentage of Assets srt:ParentCompany us-gaap:Parent0.00.00.00.0

srt:ParentCompany, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value355313343420
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest21.322.027.135.3
Percentage of Assets5.34.95.810.9
Percentage of Assets srt:ParentCompany us-gaap:RetainedEarnings0.00.00.00.0

srt:ParentCompany, us-gaap:TreasuryStock


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value-0.321-0.289-0.292-0.271
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0
Percentage of Assets srt:ParentCompany us-gaap:TreasuryStock0.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value-37.816-32.124-25.626-36.262
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.3-2.3-2.0-3.0
Percentage of Assets-0.6-0.5-0.4-0.9
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value-0.293-0.327-0.362-0.396
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-38.2-38.208-38.216-32.533-32.542-32.55-32.558-26.07-26.079-26.087-26.095-36.765-27.381-24.499-30.258-20.76-31.105-28.438-21.812-19.469-24.199-10.315
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-2.0-2.2-2.3-2.0-2.0-2.2-2.3-1.8-1.8-1.7-2.1-3.1-2.1-2.4-3.2-2.5-4.2-4.6-3.8-3.6-4.7-2.1
Percentage of Assets-0.6-0.6-0.6-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-1.0-0.7-0.7-0.9-0.7-1.2-1.3-1.1-1.10.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1462119312181217121610271027102610241023843709706499480401345273257254252248
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest77.268.573.174.673.068.672.272.569.467.666.659.554.848.151.648.547.043.845.146.748.951.6
Percentage of Assets21.417.818.219.319.616.316.116.717.017.414.218.419.014.314.413.713.112.212.414.30.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value1401281251251251151151151151151069999884240393737373737
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest7.47.47.57.77.57.78.18.27.87.68.48.37.78.54.64.95.46.16.56.87.27.7
Percentage of Assets2.11.91.92.02.01.81.81.91.92.01.82.62.72.51.31.41.51.71.82.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value7.4256.1245.9954.2360.00.00.00.9631.1940.44
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.40.40.40.30.00.00.00.20.20.1
Percentage of Assets0.10.10.10.10.00.00.00.10.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value188717371660142312671192
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.699.699.6100.0100.0100.0
Percentage of Assets27.625.924.822.421.330.9
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value322453355317357387313301362402343420510474439406382341297271249206
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest17.026.021.319.421.425.822.021.224.526.627.135.339.645.747.149.151.954.752.249.948.442.8
Percentage of Assets4.76.85.35.05.76.14.94.96.06.95.810.913.713.613.113.914.515.214.315.20.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-0.268-0.264-0.321-0.314-0.311-0.274-0.289-0.284-0.283-0.275-0.292-0.271-0.266-0.296-0.165-0.186-0.182-0.193-0.179-0.183-0.176-0.187
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value14012812512512511511511511511510610610699999999999999998988858517185838282817979797977767575757474747474
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.11.91.92.02.01.81.81.91.92.01.81.81.92.62.62.72.72.72.72.82.82.52.52.52.55.12.62.72.72.72.83.03.03.03.03.23.33.43.43.63.63.73.64.20.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value12511510699
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets1.91.81.82.6
Percentage of Assets srt:ParentCompany3.93.93.85.2

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
Value1462119312181217121610271027102610241023843843842709709709708707706706705505499449443440480431418406401361359353345315283276273264258257257254
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 Assets21.417.818.219.319.616.316.116.717.017.414.214.315.318.218.419.018.918.919.019.820.014.514.313.213.113.114.414.213.913.513.713.413.513.513.113.112.212.212.212.712.512.812.414.3

us-gaap:AdditionalPaidInCapitalCommonStock dei:LegalEntity

sji:SouthJerseyGasCompany


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value465465465465365355355355355355355355355355355355355355315
Percentage of AdditionalPaidInCapitalCommonStock31.839.038.238.230.034.634.634.734.734.842.242.242.250.150.150.150.250.344.7
Percentage of Assets6.86.97.07.45.95.75.65.85.96.16.06.06.59.19.29.59.59.58.5
Percentage of Assets sji:SouthJerseyGasCompany13.013.113.213.810.910.510.610.911.211.311.412.012.212.112.413.013.313.512.4

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-312017-12-31
Value12181027843709
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0
Percentage of Assets18.216.114.218.4
Percentage of Assets srt:ParentCompany37.634.829.837.3

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
Value322453355317357387313301362402343321391509420438497527510486497523474441471475439412432438406382397410382371381383341317333337297271
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 Assets4.76.85.35.05.76.14.94.96.06.95.85.47.113.110.911.713.314.113.713.714.115.013.613.014.014.113.113.514.414.513.914.115.015.614.515.416.417.015.215.216.216.714.315.2

us-gaap:RetainedEarningsAccumulatedDeficit dei:LegalEntity

sji:SouthJerseyGasCompany


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value954947864820830826756727739737668645654652585576582579533
Percentage of RetainedEarningsAccumulatedDeficit295.4208.9243.0258.9232.5213.6241.4241.8204.1183.3194.8200.4167.1128.1139.4131.4116.9110.0104.4
Percentage of Assets14.014.112.913.013.413.111.911.912.312.611.210.911.916.815.215.415.615.514.3
Percentage of Assets sji:SouthJerseyGasCompany26.726.724.524.324.824.422.622.423.223.421.421.722.522.320.421.121.822.120.9

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value355313343420510474
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0
Percentage of Assets5.34.95.810.913.713.6
Percentage of Assets srt:ParentCompany11.010.612.122.10.00.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-38200000.0-38208000.0-38216000.0-32533000.0-32542000.0-32550000.0-32558000.0-26070000.0-26079000.0-26087000.0-26095000.0-36740000.0-36748000.0-36756000.0-36765000.0-25852000.0-25859000.0-25866000.0-27381000.0-24092000.0-24295000.0-24399000.0-24499000.0-30372000.0-30151000.0-30257000.0-30258000.0-20996000.0-20512000.0-20650000.0-20760000.0-25972000.0-26234000.0-26299000.0-31105000.0-29774000.0-30410000.0-30179000.0-28438000.0-23317000.0-22691000.0-22938000.0-21812000.0-19469000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.6-0.6-0.6-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.6-0.7-0.9-1.0-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.9-0.9-0.9-0.9-0.7-0.7-0.7-0.7-1.0-1.0-1.0-1.2-1.2-1.3-1.3-1.3-1.1-1.1-1.1-1.1-1.1

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax dei:LegalEntity

sji:SouthJerseyGasCompany


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value-31590000.0-31598000.0-31606000.0-27850000.0-27859000.0-27867000.0-27875000.0-22332000.0-22341000.0-22349000.0-22357000.0-25972000.0-25980000.0-25988000.0-25997000.0-14913000.0-14920000.0-14927000.0-14934000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax82.782.782.785.685.685.685.685.785.785.785.770.770.770.770.757.757.757.754.5
Percentage of Assets-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.4-0.5-0.7-0.7-0.4-0.4-0.4-0.4
Percentage of Assets sji:SouthJerseyGasCompany-0.9-0.9-0.9-0.8-0.8-0.8-0.8-0.7-0.7-0.7-0.7-0.9-0.9-0.9-0.9-0.5-0.6-0.6-0.6

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value-38216000.0-32558000.0-26095000.0-36765000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets-0.6-0.5-0.4-1.0
Percentage of Assets srt:ParentCompany-1.2-1.1-0.9-1.9

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
Value268000.0264000.0321000.0314000.0311000.0274000.0289000.0284000.0283000.0275000.0292000.0287000.0282000.0274000.0271000.0266000.0264000.0269000.0266000.0262000.0259000.0262000.0296000.0290000.0287000.0284000.0165000.0163000.0161000.0162000.0186000.0170000.0169000.0167000.0182000.0181000.0180000.0145000.0193000.0184000.0183000.0188000.0179000.0183000.0
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Treasury
Period End2020-12-312019-12-312018-12-312017-12-31
Value321000.0289000.0292000.0271000.0
Percentage of TreasuryStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302010-12-312009-12-31
Value7425000.06124000.05995000.04236000.00963000.0
Percentage of MinorityInterest100.0100.0100.0100.00.0100.0
Percentage of Assets0.10.10.10.10.00.1

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Minority
Period End2020-12-31
Value5995000.0
Percentage of MinorityInterest100.0
Percentage of Assets0.1
Percentage of Assets srt:ParentCompany0.2

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value43198574740165-0.364-94.6633.827212-29.813205795633.423447965386098344967345219404936606.62355556.07714425513-3.9971253817-14.137117
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.926.011.815.214.734.9-0.1-35.21.735.0-5.16.528.521.418.31.518.118.719.917.538.929.513.535.337.89.118.615.830.314.116.147.35.421.928.15.411.515.328.19.9-2.538.013.510.7-9.335.8

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value351253233398617-11.7933887261.525404433-2.328185633112868
Percentage of NetCashProvidedByUsedInOperatingActivities83.363.156.469.696.652.1-4731.612.51006.641.3-87.87.470.746.752.9-68.042.071.750.929.547.670.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.116.46.710.614.218.23.7-4.416.614.54.40.520.210.09.7-1.07.613.410.15.218.520.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.046.011.5-21.482.037.715.63.163.622.90.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-156.992-112.328-210.432-162.21-125.054-10.055-150.167-105.238-113.466-108.777171-1828.682-70.335-61.531-57.847-66.5-90.164-72.753-66.089-63.968-55.864-59.247-129.753-95.175-85.274-60.45-166.597-80.127-78.069-50.226-122.868-102.842-44.16724-116.692-64.434-102.611-72.18-94.761-49.077-33.593-46.744-89.22-73.418-46.919-69.009
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.6-14.7-43.3-51.5-45.5-2.1-32.4-39.2-48.9-17.929.1-581.5-34.8-13.9-16.7-29.3-36.9-17.1-20.0-29.2-36.2-17.8-50.3-67.5-48.0-15.8-59.3-65.4-58.6-14.3-54.8-79.8-36.09.4-59.1-57.5-84.2-26.3-47.7-35.7-20.9-14.1-31.5-45.7-30.9-21.0

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-68.551-64.233-84.054-74.186-66.181-56.136-81.07-56.277-66.932-58.792-73.296-55.269-57.652-54.486-65.25-56.214-70.969-60.769-63.915-44.071-47.494-60.763
Percentage of NetCashProvidedByUsedInInvestingActivities43.757.239.945.752.9558.354.053.559.054.0-42.73.082.088.6112.884.578.783.596.768.985.0102.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.3-8.4-17.3-23.5-24.1-11.8-17.5-20.9-28.9-9.7-12.4-17.6-28.6-12.3-18.9-24.8-29.0-14.3-19.4-20.1-30.8-18.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.0-29.9-54.1-102.0-142.4-25.2-43.6-111.7-89.9-28.10.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value169-96.09818410571-152.191158189122-117.145-123.587471763-50.34147040-20.7721128-4.245-38.469644142811457365.347864438-83.26761608626433735-78.29515460-48.159
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax42.8-12.638.033.625.9-32.034.170.553.0-19.3-21.015.3873.3-11.34.331.016.4-4.93.513.0-2.7-11.537.531.38.07.540.846.727.71.538.434.231.4-32.631.254.471.19.522.127.121.9-23.618.033.840.0-14.6

us-gaap:NetCashProvidedByUsedInFinancingActivities dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value17-50.009563625-29.4676234-28.998485313113557506.679224013-8.601
Percentage of NetCashProvidedByUsedInFinancingActivities10.152.030.634.935.219.342.532.828.224.8-39.0112.10.8-22.0234.381.2126.7-32.2192.2143.2-318.022.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.3-6.611.611.79.1-6.214.523.114.9-4.88.217.16.62.510.125.220.81.66.818.68.7-2.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.0-15.744.8112.573.6-12.428.7108.720.75.70.00.00.00.00.00.00.00.0

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value56-9.96331-8.367-13.3643.6527.508-10.33913-13.6718-1760.1481750-16.67207.362-5.949-13.997-18.838.403
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.1-1.36.5-2.7-4.90.81.6-3.85.7-2.33.1-559.7867.0-3.85.93.2-2.4-3.3-5.73.8

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect dei:LegalEntity

sji:SouthJerseyGasCompany


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-15.367114.697-3.865-2.0540.8953.32-5.9846.191-0.0381.0830.04-3.5811.1013.324-1.343-1.6492.896-8.1087.918
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-27.4-110.814.946.215.424.544.257.946.90.35.9-0.0-0.2-6.616.3-18.227.7-20.743.194.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.91.41.0-1.2-0.70.20.7-2.22.7-0.00.20.0-1.80.21.0-0.6-0.70.7-2.53.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.00.52.2-10.813.2-0.00.60.1-5.60.60.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value43198574740165-0.364-94.6633.827212-29.813205795633.423447965386098344967345219404936606.62355556.07714425513-3.9971253817-14.137117
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.926.011.815.214.734.9-0.1-35.21.735.0-5.16.528.521.418.31.518.118.719.917.538.929.513.535.337.89.118.615.830.314.116.147.35.421.928.15.411.515.328.19.9-2.538.013.510.7-9.335.8

us-gaap:NetCashProvidedByUsedInOperatingActivities dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value351253233398617-11.7933887261.525404433-2.328185633112868
Percentage of NetCashProvidedByUsedInOperatingActivities83.363.156.469.696.652.1-4731.612.51006.641.3-87.87.470.746.752.9-68.042.071.750.929.547.670.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.116.46.710.614.218.23.7-4.416.614.54.40.520.210.09.7-1.07.613.410.15.218.520.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.046.011.5-21.482.037.715.63.163.622.90.00.00.00.00.00.00.00.0

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
Value-96.82812869-10.402-2.63910139-34.805-13.3998545-45.685-93.8191114.045-37.593-7.65937459.635-4.8276850-12.623135343-4.3969.6214739-1.4210.88842252.013105436-5.1386.07951251.3088.4431
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 RevenueFromContractWithCustomerExcludingAssessedTax-24.416.914.2-3.3-1.021.28.5-12.9-5.814.17.8-14.5-46.525.11.2-16.6-3.18.913.94.4-3.120.419.7-8.97.514.015.6-3.67.213.717.5-1.10.716.812.71.88.519.718.6-3.73.815.58.90.85.69.6

us-gaap:NetIncomeLoss dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value8343-9.5433.6787028-11.6041.9766823-8.9761.5696629-5.7712.2664622-3.3155.04344
Percentage of NetIncomeLoss65.062.891.7-139.469.871.733.3-14.780.351.419.6-1.760.0731.415.4-29.6123.249.9-34.4-104.565.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.08.9-3.01.314.86.1-4.30.911.34.0-2.90.815.08.6-2.50.910.96.9-1.53.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.037.618.9-21.04.229.514.1-18.12.434.40.00.00.00.00.00.00.00.0

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

sji:SouthJerseyGasCompany, us-gaap:RetainedEarnings


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-9.5433.67870-11.6041.97668-8.9761.56966
Percentage of NetIncomeLoss91.7-139.469.833.3-14.780.319.6-1.760.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.01.314.8-4.30.911.3-2.90.815.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-10.402-2.639101-34.805-13.39985-45.685-93.819111
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-1.021.2-12.9-5.814.1-14.5-46.525.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-96.7412869-10.402-2.63910139-34.805-13.3998545-45.685-93.819111-37.593-7.65937459.635-4.8276850-12.623135343-4.3969.6214739-1.4210.88842252.013105436-5.1386.07951251.3088.4431
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.914.2-3.3-1.021.28.5-12.9-5.814.17.8-14.5-46.525.1-16.6-3.18.913.94.4-3.120.419.7-8.97.514.015.6-3.67.213.717.5-1.10.716.812.71.88.519.718.6-3.73.815.58.90.85.69.6

us-gaap:ProfitLoss dei:LegalEntity

sji:SouthJerseyGasCompany


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value6.3138343-9.5433.6787028-11.6041.97668-8.9761.56966-5.7712.26646-3.3155.04344
Percentage of ProfitLoss-6.565.062.991.7-139.469.871.733.3-14.780.319.6-1.760.015.4-29.6123.2-34.4-104.565.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.611.08.9-3.01.314.86.1-4.30.911.3-2.90.815.0-2.50.910.9-1.53.313.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.037.618.9-21.04.229.5-18.12.434.40.00.00.00.00.00.0

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

sji:SouthJerseyGasCompany, us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value6.313833.67870
Percentage of ProfitLoss-6.565.0-139.469.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.611.01.314.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany us-gaap:RetainedEarnings0.00.00.00.0

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-31
Value0.0880.129
Percentage of ProfitLoss-0.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.0

us-gaap:Parent


Profit
Period End2021-06-302021-03-31
Value-96.828128
Percentage of ProfitLoss100.199.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-06-302020-03-31
Value-96.828128-2.639101
Percentage of ProfitLoss100.199.9100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-24.416.9-1.021.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-156.992-112.328-210.432-162.21-125.054-10.055-150.167-105.238-113.466-108.777171-1828.682-70.335-61.531-57.847-66.5-90.164-72.753-66.089-63.968-55.864-59.247-129.753-95.175-85.274-60.45-166.597-80.127-78.069-50.226-122.868-102.842-44.16724-116.692-64.434-102.611-72.18-94.761-49.077-33.593-46.744-89.22-73.418-46.919-69.009
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-39.6-14.7-43.3-51.5-45.5-2.1-32.4-39.2-48.9-17.929.1-581.5-34.8-13.9-16.7-29.3-36.9-17.1-20.0-29.2-36.2-17.8-50.3-67.5-48.0-15.8-59.3-65.4-58.6-14.3-54.8-79.8-36.09.4-59.1-57.5-84.2-26.3-47.7-35.7-20.9-14.1-31.5-45.7-30.9-21.0

us-gaap:NetCashProvidedByUsedInInvestingActivities dei:LegalEntity

sji:SouthJerseyGasCompany


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-68.551-64.233-84.054-74.186-66.181-56.136-81.07-56.277-66.932-58.792-73.296-55.269-57.652-54.486-65.25-56.214-70.969-60.769-63.915-44.071-47.494-60.763
Percentage of NetCashProvidedByUsedInInvestingActivities43.757.239.945.752.9558.354.053.559.054.0-42.73.082.088.6112.884.578.783.596.768.985.0102.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-17.3-8.4-17.3-23.5-24.1-11.8-17.5-20.9-28.9-9.7-12.4-17.6-28.6-12.3-18.9-24.8-29.0-14.3-19.4-20.1-30.8-18.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax sji:SouthJerseyGasCompany0.00.00.00.00.0-29.9-54.1-102.0-142.4-25.2-43.6-111.7-89.9-28.10.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30