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Income Taxes (Schedule Of Effective Tax Rates) (Detail) | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Income Taxes [Line Items] |  |
Effective tax rate | 15.30% | 8.90%
Public Service Electric and Gas Company [Member] |  |
Income Taxes [Line Items] |  |
Effective tax rate | 14.20% | 19.90%
PSEG Power [Member] |  |
Income Taxes [Line Items] |  |
Effective tax rate | 24.40% | 122.80%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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