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Commitments and Contingent Liabilities - Schedule of Outstanding Guarantees, Current Exposure and Margin Positions (Details) - PSEG Power - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Loss Contingencies [Line Items] |  |
Face Value of Outstanding Guarantees | $ 1,272 | $ 1,381
Exposure under Current Guarantees | 47 | 118
Letters of Credit - Counterparty Margining Posted | 4 | 10
Letters of Credit - Counterparty Margining Received | 24 | 91
Counterparty Cash Collateral Deposited | 0 | 0
Counterparty Cash Collateral Received | (1) | (2)
Net Broker Balance Deposited (Received) | 245 | 115
Other Letters of Credit | $ 155 | $ 180

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