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v3.23.3

Debt and Credit Facilities (Changes in Long-Term Debt) (Detail) - USD ($) $ in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2022
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | $ 1,800 | $ 1,750
Repayments of Long-term Debt |  | 825 | 0
Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | 1,800 | 500
Repayments of Long-term Debt |  | 825 | $ 0
Three Year Variable rate term loan | PSEG Power [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | 1,250 |
Medium Term Notes Green Bond Four Point Six Five Percent due Two Thousand Thirty Three | Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | $ 500 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.65% |
Medium Term Notes Green Bond Five Point One Three Percent due Two Thousand Fifty Three | Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | $ 400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.13% |
Medium Term Notes Two Point Three Eight Percent Due In Two Thousand Twenty Three | Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.38% |
Repayments of Long-term Debt |  | $ 500 |
Medium Term Notes Five Point Two Zero Percent due Two Thousand Thirty Three | Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | $ 500 |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.20% |
Medium Term Notes Five Point Four Five Percent due Two Thousand Fifty Three | Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt |  | $ 400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.45% |
Medium Term Notes Three Point Two Five Percent due Two Thousand Twenty Three | Public Service Electric and Gas Company [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.25% |
Repayments of Long-term Debt |  | $ 325 |
Subsequent Event [Member] | Senior Notes Five Point Eight Seven Five Percent due Two Thousand Twenty Eight |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt | $ 600 |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.88% |  |
Subsequent Event [Member] | Senior Notes Six Point One Two Five Percent due Two Thousand Thirty Three |  |  |
Debt Instrument [Line Items] |  |  |
Issuance of Long-term Debt | $ 400 |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.13% |  |

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