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Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Property, Plant And Equipment) (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | $ 28,249 | $ 25,523
Total Generation | 12,250 | 13,156
Other | 732 | 658
Total | 41,231 | 39,337
PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 28,249 | 25,523
Total Generation | 593 | 591
Other | 275 | 233
Total | 29,117 | 26,347
Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 0 | 0
Total Generation | 11,657 | 12,565
Other | 98 | 90
Total | 11,755 | 12,655
Other [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 0 | 0
Total Generation | 0 | 0
Other | 359 | 335
Total | 359 | 335
Electric Transmission [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 10,425 | 9,149
Electric Transmission [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 10,425 | 9,149
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 | 8,455 | 7,976
Electric Distribution [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 8,455 | 7,976
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 Distribution [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 7,122 | 6,458
Gas Distribution [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 7,122 | 6,458
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 | 1,735 | 1,501
Total Generation | 2,339 | 1,483
Construction Work In Progress [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 1,735 | 1,501
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 | 2,339 | 1,483
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
Other Plant [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 512 | 439
Other Plant [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Transmission and Distribution | 512 | 439
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 | 4,923 | 7,096
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 | 4,923 | 7,096
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 | 2,893 | 2,516
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 | 2,893 | 2,516
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 | 745 | 783
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 | 745 | 783
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 | 1,350 | 1,278
Other Production-Solar [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Generation | 593 | 591
Other Production-Solar [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Generation | 757 | 687
Other Production-Solar [Member] | Other [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Total Generation | $ 0 | $ 0

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