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Commitments And Contingent Liabilities (Guaranteed Obligations) (Detail) - PSEG Power [Member] - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
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Loss Contingencies [Line Items] |  |
Face Value of Outstanding Guarantees | $ 1,392 | $ 1,381
Exposure under Current Guarantees | 61 | 118
Letters of Credit Margin Posted | 4 | 10
Letters of Credit Margin Received | 21 | 91
Counterparty Cash Collateral Deposited | 0 | 0
Counterparty Cash Collateral Received | (1) | (2)
Net Broker Balance Deposited (Received) | 138 | 115
Other Letters of Credit | $ 226 | $ 180

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