Financial Information By Business Segments - Financial Information By Business Segments (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating Segments [Member] \| PSEG Power & Other [Member]
Segment Reporting Information [Line Items]
Non trading commodity mark to market gains (losses), net of tax	$ 136	$ 114	$ 1	$ (72)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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