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Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Jointly-Owned Facilities) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Peach Bottom [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 50.00% |
Plant | $ 1,405 | $ 1,340
Accumulated Depreciation | $ 455 | 435
Salem [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 57.00% |
Plant | $ 1,321 | 1,256
Accumulated Depreciation | 387 | 384
Nuclear Support Facilities [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Plant | 226 | 247
Accumulated Depreciation | $ 97 | 107
Yards Creek [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 50.00% |
Plant | $ 0 | 55
Accumulated Depreciation | $ 0 | 27
Merrill Creek Reservoir [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 14.00% |
Plant | $ 1 | 1
Accumulated Depreciation | 0 | 0
Transmission Facilities [Member] | Public Service Electric and Gas Company |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Plant | 161 | 161
Accumulated Depreciation | $ 63 | $ 60

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- Definition The period end amount owned by the reporting utility of a jointly owned utility plant in service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.C) -URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033 + Details
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- Definition The period end amount of accumulated depreciation in a jointly owned electricity generation plant. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.C) -URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033 + Details
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- Definition The proportionate share of interest (percent) in a jointly owned utility plant. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 10.C) -URI http://asc.fasb.org/extlink&oid=115995737&loc=d3e659983-123033 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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