Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	$ 25,523	$ 22,967
Total Generation	13,156	11,842
Other	658	685
Total	39,337	35,494
PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	25,523	22,967
Total Generation	591	569
Other	233	196
Total	26,347	23,732
Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Total Generation	12,565	11,273
Other	90	81
Total	12,655	11,354
Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Total Generation	0	0
Other	335	408
Total	335	408
Electric Transmission [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	9,132	7,554
Electric Transmission [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	9,132	7,554
Electric Transmission [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Electric Transmission [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Electric Distribution [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	7,974	7,553
Electric Distribution [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	7,974	7,553
Electric Distribution [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Electric Distribution [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Gas Transmission [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	89	89
Gas Transmission [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	89	89
Gas Transmission [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Gas Transmission [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Gas Distribution [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	6,369	5,875
Gas Distribution [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	6,369	5,875
Gas Distribution [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Gas Distribution [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Construction Work In Progress [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	1,501	1,459
Total Generation	1,483	892
Construction Work In Progress [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	1,501	1,459
Total Generation	0	0
Construction Work In Progress [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Total Generation	1,483	892
Construction Work In Progress [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Total Generation	0	0
Plant Held For Future Use [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	19	26
Plant Held For Future Use [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	19	26
Plant Held For Future Use [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Plant Held For Future Use [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Other Plant [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	439	411
Other Plant [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	439	411
Other Plant [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Other Plant [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Transmission and Distribution	0	0
Fossil Production [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	7,096	7,005
Fossil Production [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	0
Fossil Production [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	7,096	7,005
Fossil Production [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	0
Nuclear Production [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	2,516	2,202
Nuclear Production [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	0
Nuclear Production [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	2,516	2,202
Nuclear Production [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	0
Nuclear Fuel In Service [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	783	785
Nuclear Fuel In Service [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	0
Nuclear Fuel In Service [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	783	785
Nuclear Fuel In Service [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	0	0
Other Production-Solar [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	1,278	958
Other Production-Solar [Member] | PSE&G [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	591	569
Other Production-Solar [Member] | Power [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	687	389
Other Production-Solar [Member] | Other [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Total Generation	$ 0	$ 0