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Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Jointly-Owned Facilities) (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Conemaugh [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest |  | 23.00%
Plant |  | $ 417
Accumulated Depreciation |  | $ 192
Keystone [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest |  | 23.00%
Plant |  | $ 416
Accumulated Depreciation |  | 200
Peach Bottom [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 50.00% |
Plant | $ 1,340 | 1,334
Accumulated Depreciation | $ 435 | 389
Salem [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 57.00% |
Plant | $ 1,256 | 1,196
Accumulated Depreciation | 384 | 333
Nuclear Support Facilities [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Plant | 247 | 244
Accumulated Depreciation | $ 107 | 95
Yards Creek [Member] | PSEG Power LLC |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 50.00% |
Plant | $ 55 | 48
Accumulated Depreciation | $ 27 | 26
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 | 162
Accumulated Depreciation | $ 60 | $ 58

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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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