Regulatory Assets And Liabilities (Schedule Of Regulatory Assets and Liabilities) (Details) $ in Millions		1 Months Ended
		Nov. 30, 2015 USD ($)	Oct. 31, 2015 USD ($)	Jul. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Apr. 30, 2015 $ / DTH	Mar. 31, 2015 $ / DTH	Feb. 28, 2015 USD ($)	Dec. 31, 2015 USD ($)	Oct. 01, 2015	Dec. 31, 2014 USD ($)		May. 31, 2014 USD ($)
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets of Variable Interest Entities (VIEs)									$ 0		$ 249
Regulatory Liabilities of Consolidated Variable Interest Entity, Current									42		0
Regulatory Assets, Current									164		323
Regulatory Assets, Noncurrent									3,196		3,192
Regulatory Liability, Current									123		186
Regulatory Liabilities, Noncurrent									175		258
Regulatory Liabilities Of Consolidated Variable Interest Entity Noncurrent									0		39
PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets of Variable Interest Entities (VIEs)									0		249
Regulatory Liabilities of Consolidated Variable Interest Entity, Current									$ 42		0
Approved SBC and NGC revenue recovery													$ 311
Current BGSS rate per therm									0.45
Proposed BGSS rate per therm										0.40
Self Implementing Bill Credit per therm | $ / DTH						0.45	243,000,000.00
True-up adjustment for Transmission Formula Rate Revenues									$ (19)
Deferred Storm and Property Reserve Deficiency, Noncurrent									220
Request for RAC Recovery									85
Regulatory Assets, Current									164		323
Regulatory Assets Including Consolidated Variable Interest Entities, Current									164		572
Regulatory Assets, Noncurrent									3,196		3,192
Total Noncurrent Regulatory Assets									3,196		3,192
Total Regulatory Assets									3,360		3,764
Regulatory Liability, Current									123		186
Regulatory Liabilities Including Consolidated Variable Interest Entity, Current									165		186
Regulatory Liabilities, Noncurrent									175		258
Regulatory Liabilities Of Consolidated Variable Interest Entity Noncurrent									0		39
Total Noncurrent Regulatory Liabilities									175		297
Total Regulatory Liabilities									340		483
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 146		$ 6			$ 1
Proposed Recovery of costs for Electric Green Energy Program		$ 57		$ 66
Proposed Recovery of costs for Gas Green Energy Programs		$ 8		$ 10
Overrecovered Electric Energy Costs-BGS [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current									0		21
Stranded Costs [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current									64		0
Regulatory Liabilities, Noncurrent	[1],[2]								0		134
Deferred Income Taxes [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current									0		28
Solar and EE Recovery Charge formerly RRC and currently Green Program Recovery Charges (GPRC) [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	[1],[2]								36		6
Societal Benefits Charges (SBC) [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	[1],[2]								31		13
Weather Normalization Clause [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	[1]								0		31
Gas Margin Adjustment Clause [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	[1],[2]								13		28
FERC Formula Rate True-Up [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	[1],[2]								19		0
Regulatory Liabilities, Noncurrent	[1],[2]								49		26
Overrecovered Gas and Electric Costs - BGSS and BGS [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current	[1],[2]								1		46
Electric Cost Of Removal [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liabilities, Noncurrent									122		133
Other [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liabilities, Noncurrent									4		4
Non-Utility Generation Charge [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Liability, Current									1		13
New Jersey Clean Energy Program [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	[1],[2]								142		142
Weather Normalization Clause [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	[1]								10		0
Solar and EE Recovery Charge formerly RRC and currently Green Program Recovery Charges (GPRC) [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	[1],[2]								1		13
Regulatory Assets, Noncurrent	[1]								104		134
Stranded Costs [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current	[1]								0		412
Pension and Other Postretirement Benefit Costs [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent									1,270		1,265
Deferred Income Taxes [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent									467		473
Manufactured Gas Plant (MGP) Remediation Costs [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	[1]								431		434
Storm Damage Deferral [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent									233		245
Remediation Adjustment Charge (Other SBC) [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	[1],[2]								174		164
Conditional Asset Retirement Obligation [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent									152		138
Electric Cost Of Removal [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent									133		91
Unamortized Loss On Reacquired Debt And Debt Expense [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent	[2]								67		74
Mark-To-Market Contracts [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Noncurrent									63		75
Other [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current									0		5
Regulatory Assets, Noncurrent									102		99
Underrecovered Electric Costs Basic Generation Service [Member] | PSE&G [Member]
Regulatory Assets And Liabilities [Line Items]
Regulatory Assets, Current									$ 11		$ 0	[1],[2]

[1] Recoverable/Refundable per specific rate order.

[2] Recovered/Refunded with interest.