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Property, Plant And Equipment And Jointly-Owned Facilities (Schedule Of Jointly-Owned Facilities) (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
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Conemaugh [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 23.00% |
Plant | $ 404 | $ 397
Accumulated Depreciation | $ 154 | 142
Keystone [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 23.00% |
Plant | $ 408 | 396
Accumulated Depreciation | $ 163 | 151
Peach Bottom [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 50.00% |
Plant | $ 1,219 | 1,087
Accumulated Depreciation | $ 262 | 236
Salem [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 57.00% |
Plant | $ 990 | 916
Accumulated Depreciation | 276 | 236
Nuclear Support Facilities [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Plant | 226 | 218
Accumulated Depreciation | $ 60 | 49
Yards Creek [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 50.00% |
Plant | $ 42 | 41
Accumulated Depreciation | $ 24 | 24
Merrill Creek Reservoir [Member] | Power [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Ownership Interest | 14.00% |
Plant | $ 1 | 1
Accumulated Depreciation | 0 | 0
Transmission Facilities [Member] | PSE&G [Member] |  |
Public Utility, Property, Plant and Equipment [Line Items] |  |
Plant | 166 | 162
Accumulated Depreciation | $ 72 | $ 69

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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://www.xbrl.org/2003/role/presentationRef -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=6500719&loc=d3e659983-123033 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C + Details
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- Definition The period end amount of accumulated depreciation in a jointly owned electricity generation plant. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6500719&loc=d3e659983-123033 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C + Details
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- Definition The proportionate share of interest (percent) in a jointly owned utility plant. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6500719&loc=d3e659983-123033 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C + 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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