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Income Taxes (Description Of Income Tax Years By Material Jurisdictions) (Details) | 12 Months Ended
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Dec. 31, 2017
Federal [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2011-2016
Federal [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
Federal [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
New Jersey [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2006-2016
New Jersey [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
New Jersey [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2011-2016
Pennsylvania [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2014-2016
Pennsylvania [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
Pennsylvania [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2014-2016
Connecticut [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2016
Connecticut [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
Connecticut [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
Texas [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2008-2016
Texas [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
Texas [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
California [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2006-2016
California [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
California [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A
New York [Member] | PSEG [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2014-2016
New York [Member] | Power [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | 2014-2016
New York [Member] | PSE&G [Member] |
Income Taxes [Line Items] |
Income Tax Year Subject to Examination by Material Jurisdictions | N/A

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