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Financing Receivables (Schedule Of Credit Risk Profile Based On Payment Activity) (Detail) - PSE&G [Member] - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Concentration Risk [Line Items] |  |
Solar Loans | $ 173 | $ 168
Current Portion of Solar Loans | (24) | (18)
Commercial/Industrial [Member] |  |
Concentration Risk [Line Items] |  |
Solar Loans | 164 | 158
Residential [Member] |  |
Concentration Risk [Line Items] |  |
Solar Loans | 9 | 10
Solar Loan Investments [Member] |  |
Concentration Risk [Line Items] |  |
Noncurrent Portion of Solar Loans | $ 149 | $ 150

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