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Organization, Basis Of Presentation And Summary Of Significant Accounting Policies (Depreciation Rate Stated Percentage) (Details)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
PSE&G [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Depreciation Rate 2.47%us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService
/ dei_LegalEntityAxis
= pseg_PseAndGMember
2.48%us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService
/ dei_LegalEntityAxis
= pseg_PseAndGMember
2.48%us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService
/ dei_LegalEntityAxis
= pseg_PseAndGMember
General Plant Assets [Member] | Minimum [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 3 years    
General Plant Assets [Member] | Maximum [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 20 years    
Fossil Production [Member] | Minimum [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 19 years    
Fossil Production [Member] | Maximum [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 79 years    
Nuclear Production [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 60 years    
Pumped Storage Facilities [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 76 years    
Solar Assets [Member] | Power [Member]      
Organization Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives 25 years