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v3.25.3

Debt and Credit Facilities - Changes in Long-Term Debt - Additional Information (Detail) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 3,600 | $ 3,350
Repayments of Long-term Debt | 2,150 | 1,250
Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | 1,350 | 2,100
Repayments of Long-term Debt | 350 | $ 500
Senior Notes Four Point Nine Zero Due Two Thousand Thirty [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 600 |
Debt Instrument, Interest Rate, Stated Percentage | 4.90% |
Senior Notes Five Point Four Zero Due Two Thousand Thirty Five [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 400 |
Debt Instrument, Interest Rate, Stated Percentage | 5.40% |
Medium Term Notes Five Point Zero Five Due Two Thousand Thirty Five [Member] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 400 |
Debt Instrument, Interest Rate, Stated Percentage | 5.05% |
Medium Term Notes Five Point Five Zero Due Two Thousand Fifty Five [Member] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 500 |
Debt Instrument, Interest Rate, Stated Percentage | 5.50% |
Medium Term Notes Four Point Nine Zero Due Two Thousand Thirty Five [Member] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 450 |
Debt Instrument, Interest Rate, Stated Percentage | 4.90% |
Medium Term Notes Three Point Zero Zero Percent due Two Thousand Twenty Five [Member] | Public Service Electric and Gas Company [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.00% |
Repayments of Long-term Debt | $ 350 |
Senior Unsecured Notes Due Two Thousand Thirty [Member] | PSEG Power [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 750 |
Debt Instrument, Interest Rate, Stated Percentage | 5.20% |
Senior Unsecured Notes Due Two Thousand Thirty Five [Member] | PSEG Power [Member] |  |
Debt Instrument [Line Items] |  |
Issuance of Long-Term Debt | $ 500 |
Debt Instrument, Interest Rate, Stated Percentage | 5.75% |
June Two Thousand Twenty Five Term Loan [Member] | PSEG Power [Member] |  |
Debt Instrument [Line Items] |  |
Repayments of Long-term Debt | $ 1,250 |
Senior Notes Zero Point Eight Zero Due 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 0.80% |
Repayments of Long-term Debt | $ 550 |

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