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Pension, OPEB and Savings Plans (Schedule Of Pension And OPEB Costs) (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pension Benefits [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ (115) | $ (82) | $ (28)
Total Benefit Costs | (115) | (82) | (28)
Pension Benefits [Member] | Public Service Electric and Gas Company |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (70) | (64) | (27)
Pension Benefits [Member] | PSEG Power & Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (45) | (18) | (1)
Other Benefits [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (124) | (96) | (77)
Total Benefit Costs | (124) | (96) | (77)
Other Benefits [Member] | Public Service Electric and Gas Company |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | (109) | (92) | (76)
Other Benefits [Member] | PSEG Power & Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ (15) | $ (4) | $ (1)

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