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Income Taxes (Schedule Of Effective Tax Rates) (Detail) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Income Taxes [Line Items] |  |  |  |
Effective tax rate | (15.00%) | 26.50% | 13.10% | 26.60%
Public Service Electric and Gas Company [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Effective tax rate | 5.80% | 25.70% | 5.80% | 26.40%
PSEG Power [Member] |  |  |  |
Income Taxes [Line Items] |  |  |  |
Effective tax rate | 21.60% | 31.70% | 30.60% | 27.10%

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