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Related-Party Transactions (Schedule Of Related Party Transactions, Payables) (Detail) - Public Service Electric and Gas Company [Member] - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
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Related Party Transaction [Line Items] |  |
Payable To PSEG Power | $ 195 | $ 244
Payable To Services | 87 | 111
Payable to PSEG | 138 | 63
Accounts Payable - Affiliated Companies | 420 | 418
Working Capital Advances to Services | 33 | 33
Long-Term Accrued Taxes Payable | $ 6 | $ 6

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