Organization, Basis of Presentation and Significant Accounting Policies - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions |
Mar. 31, 2025 |
Dec. 31, 2024 |
Mar. 31, 2024 |
Dec. 31, 2023 |
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|---|---|---|---|---|---|---|
| Cash and Cash Equivalents | $ 894 | $ 125 | ||||
| Restricted Cash in Other Current Assets | 15 | 8 | ||||
| Restricted Cash in Other Noncurrent Assets | 21 | 21 | ||||
| Cash, Cash Equivalents and Restricted Cash | 930 | 154 | $ 1,224 | $ 99 | ||
| Public Service Electric and Gas Company [Member] | ||||||
| Cash and Cash Equivalents | 559 | 79 | ||||
| Restricted Cash in Other Current Assets | 7 | 8 | ||||
| Restricted Cash in Other Noncurrent Assets | 21 | 21 | ||||
| Cash, Cash Equivalents and Restricted Cash | 587 | 108 | $ 88 | $ 75 | ||
| PSEG Power & Other [Member] | ||||||
| Cash and Cash Equivalents | [1] | 335 | 46 | |||
| Restricted Cash in Other Current Assets | [1] | 8 | 0 | |||
| Restricted Cash in Other Noncurrent Assets | [1] | 0 | 0 | |||
| Cash, Cash Equivalents and Restricted Cash | [1] | $ 343 | $ 46 | |||
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