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Financing Receivables (Schedule Of Credit Risk Profile Based On Payment Activity) (Detail) - Public Service Electric and Gas Company - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Concentration Risk [Line Items] |  |
Solar Loans | $ 63 | $ 89
Current Portion of Solar Loans | (23) | (27)
Noncurrent Portion of Solar Loans | $ 40 | 62
Average loan repayment period | 8 years |
Solar Loan I |  |
Concentration Risk [Line Items] |  |
Solar Loans | $ 4 |
Solar Loan II |  |
Concentration Risk [Line Items] |  |
Solar Loans | 30 |
Solar Loan III |  |
Concentration Risk [Line Items] |  |
Solar Loans | $ 29 |
Minimum |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 10 years |
Maximum [Member] |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 15 years |
Commercial/Industrial [Member] |  |
Concentration Risk [Line Items] |  |
Solar Loans | $ 60 | 85
Commercial/Industrial [Member] | Solar Loan I |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 15 years |
Commercial/Industrial [Member] | Solar Loan II |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 15 years |
Commercial/Industrial [Member] | Solar Loan III |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 10 years |
Residential [Member] |  |
Concentration Risk [Line Items] |  |
Solar Loans | $ 3 | $ 4
Residential [Member] | Solar Loan I |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 10 years |
Residential [Member] | Solar Loan II |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 10 years |
Residential [Member] | Solar Loan III |  |
Concentration Risk [Line Items] |  |
Loan Receivable, term | 10 years |

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