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Organization, Basis of Presentation and Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Cash, Cash Equivalents and Restricted Cash | Restricted cash consists primarily of deposits received related to construction projects at PSE&G.
|  |  | PSE&G |  |  | PSEG Power & Other (A) |  |  | Consolidated |  |
|  |  | Millions |  |
| As of September 30, 2025 |  |  |  |  |  |  |  |  |  |
| Cash and Cash Equivalents |  | $ | 273 |  |  | $ | 61 |  |  | $ | 334 |  |
| Restricted Cash in Other Current Assets |  |  | 5 |  |  |  | — |  |  |  | 5 |  |
| Restricted Cash in Other Noncurrent Assets |  |  | 21 |  |  |  | — |  |  |  | 21 |  |
| Cash, Cash Equivalents and Restricted Cash |  | $ | 299 |  |  | $ | 61 |  |  | $ | 360 |  |
| As of December 31, 2024 |  |  |  |  |  |  |  |  |  |
| Cash and Cash Equivalents |  | $ | 79 |  |  | $ | 46 |  |  | $ | 125 |  |
| Restricted Cash in Other Current Assets |  |  | 8 |  |  |  | — |  |  |  | 8 |  |
| Restricted Cash in Other Noncurrent Assets |  |  | 21 |  |  |  | — |  |  |  | 21 |  |
| Cash, Cash Equivalents and Restricted Cash |  | $ | 108 |  |  | $ | 46 |  |  | $ | 154 |  |
(A) Includes amounts applicable to PSEG Power, Energy Holdings, Services and PSEG (parent company).

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