XML 74 R65.htm IDEA: XBRL DOCUMENT v2.4.1.9
Financial Risk Management Activities (Schedule Of Derivative Instruments Fair Value In Balance Sheets) (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets $ 87us-gaap_DerivativeAssetsCurrent $ 240us-gaap_DerivativeAssetsCurrent
Derivative Contracts, Noncurrent Assets 108us-gaap_DerivativeAssetsNoncurrent 77us-gaap_DerivativeAssetsNoncurrent
Total Mark-to-Market Derivative Assets 195us-gaap_DerivativeAssets 317us-gaap_DerivativeAssets
Derivative Contracts, Current Liabilities (94)us-gaap_DerivativeLiabilitiesCurrent (132)us-gaap_DerivativeLiabilitiesCurrent
Derivative Contracts, Noncurrent Liabilities (25)us-gaap_DerivativeLiabilitiesNoncurrent (33)us-gaap_DerivativeLiabilitiesNoncurrent
Total Mark-to-Market Derivative (Liabilities) (119)us-gaap_DerivativeLiabilities (165)us-gaap_DerivativeLiabilities
Net Mark-to-Market Derivative Assets (Liabilities) 76us-gaap_DerivativeFairValueOfDerivativeNet 152us-gaap_DerivativeFairValueOfDerivativeNet
Net cash collateral received in connection with net derivative contracts 4us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet 24us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
Power [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 72us-gaap_DerivativeAssetsCurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 207us-gaap_DerivativeAssetsCurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Noncurrent Assets 98us-gaap_DerivativeAssetsNoncurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 62us-gaap_DerivativeAssetsNoncurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Total Mark-to-Market Derivative Assets 170us-gaap_DerivativeAssets
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 269us-gaap_DerivativeAssets
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Current Liabilities (94)us-gaap_DerivativeLiabilitiesCurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] (132)us-gaap_DerivativeLiabilitiesCurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Noncurrent Liabilities (25)us-gaap_DerivativeLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] (33)us-gaap_DerivativeLiabilitiesNoncurrent
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Total Mark-to-Market Derivative (Liabilities) (119)us-gaap_DerivativeLiabilities
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] (165)us-gaap_DerivativeLiabilities
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Net Mark-to-Market Derivative Assets (Liabilities) 51us-gaap_DerivativeFairValueOfDerivativeNet
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 104us-gaap_DerivativeFairValueOfDerivativeNet
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Power [Member] | Netting [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets (456)us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] (408)us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Derivative Contracts, Noncurrent Assets (143)us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] (109)us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Total Mark-to-Market Derivative Assets (599)us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] (517)us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Derivative Contracts, Current Liabilities 453us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] 436us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Derivative Contracts, Noncurrent Liabilities 150us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] 105us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Total Mark-to-Market Derivative (Liabilities) 603us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] 541us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Net Mark-to-Market Derivative Assets (Liabilities) 4us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2] 24us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NetInvestmentHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1],[2]
Power [Member] | Energy-Related Contracts [Member] | Cash Flow Hedging [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 2us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 18us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Noncurrent Assets 0us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 0us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Total Mark-to-Market Derivative Assets 2us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 18us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Current Liabilities 0us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 0us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Noncurrent Liabilities 0us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 0us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Total Mark-to-Market Derivative (Liabilities) 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Net Mark-to-Market Derivative Assets (Liabilities) 2us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 18us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
PSE And G [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 0us-gaap_DerivativeAssetsCurrent
/ dei_LegalEntityAxis
= pseg_PseAndGMember
18us-gaap_DerivativeAssetsCurrent
/ dei_LegalEntityAxis
= pseg_PseAndGMember
Derivative Contracts, Noncurrent Assets 7us-gaap_DerivativeAssetsNoncurrent
/ dei_LegalEntityAxis
= pseg_PseAndGMember
8us-gaap_DerivativeAssetsNoncurrent
/ dei_LegalEntityAxis
= pseg_PseAndGMember
PSEG [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 15us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 15us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Derivative Contracts, Noncurrent Assets 3us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 7us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Total Mark-to-Market Derivative Assets 18us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 22us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Derivative Contracts, Current Liabilities 0us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 0us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Derivative Contracts, Noncurrent Liabilities 0us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 0us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Total Mark-to-Market Derivative (Liabilities) 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Net Mark-to-Market Derivative Assets (Liabilities) 18us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1] 22us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
[1]
Not Designated as Hedging Instrument [Member] | Power [Member] | Energy-Related Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 526us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 597us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Noncurrent Assets 241us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 171us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Total Mark-to-Market Derivative Assets 767us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 768us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Current Liabilities (547)us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] (568)us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Derivative Contracts, Noncurrent Liabilities (175)us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] (138)us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Total Mark-to-Market Derivative (Liabilities) (722)us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] (706)us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Net Mark-to-Market Derivative Assets (Liabilities) 45us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1] 62us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PowerMember
[1]
Not Designated as Hedging Instrument [Member] | PSE And G [Member] | Energy-Related Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Contracts, Current Assets 0us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1] 18us-gaap_DerivativeAssetsCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1]
Derivative Contracts, Noncurrent Assets 7us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1] 8us-gaap_DerivativeAssetsNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1]
Total Mark-to-Market Derivative Assets 7us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1] 26us-gaap_DerivativeAssets
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1]
Derivative Contracts, Current Liabilities 0us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1] 0us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1]
Derivative Contracts, Noncurrent Liabilities 0us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1] 0us-gaap_DerivativeLiabilitiesNoncurrent
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1]
Total Mark-to-Market Derivative (Liabilities) 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1] 0us-gaap_DerivativeLiabilities
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= pseg_PseAndGMember
[1]
Net Mark-to-Market Derivative Assets (Liabilities) 7us-gaap_DerivativeFairValueOfDerivativeNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EnergyRelatedDerivativeMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
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[1] 26us-gaap_DerivativeFairValueOfDerivativeNet
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[1]
Current Assets [Member]    
Derivatives, Fair Value [Line Items]    
Net cash collateral received in connection with net derivative contracts (9)us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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(4)us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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Non Current Assets [Member]    
Derivatives, Fair Value [Line Items]    
Net cash collateral received in connection with net derivative contracts (3)us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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(8)us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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Current Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Net cash collateral received in connection with net derivative contracts 6us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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32us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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Noncurrent Liabilities [Member]    
Derivatives, Fair Value [Line Items]    
Net cash collateral received in connection with net derivative contracts $ 10us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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$ 4us-gaap_DerivativeFairValueAmountOffsetAgainstCollateralNet
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[1] Substantially all of Power's and PSEG's derivative instruments are contracts subject to master netting agreements. Contracts not subject to master netting or similar agreements are immaterial and did not have any collateral posted or received as of March 31, 2015 and December 31, 2014. PSE&G does not have any derivative contracts subject to master netting or similar agreements.
[2] Represents the netting of fair value balances with the same counterparty (where the right of offset exists) and the application of collateral. All cash collateral received or posted that has been allocated to derivative positions, where the right of offset exists, has been offset on the Condensed Consolidated Balance Sheets. As of March 31, 2015 and December 31, 2014, net cash collateral (received) paid of $4 million and $24 million, respectively, were netted against the corresponding net derivative contract positions. Of the $4 million as of March 31, 2015, $(9) million and $(3) million of cash collateral were netted against current assets and noncurrent assets, respectively, and $6 million and $10 million were netted against current liabilities and noncurrent liabilities, respectively. Of the $24 million as of December 31, 2014, $(4) million and $(8) million were netted against current assets and noncurrent assets, respectively, and $32 million and $4 million were netted against current liabilities and noncurrent liabilities, respectively.