Financial Information By Business Segments - Financial Information By Business Segments (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Pension lift out settlement charge, net of tax		$ 239		$ 239
Operating Segments [Member] \| PSEG Power & Other [Member]
Segment Reporting Information [Line Items]
Non trading commodity mark to market gains (losses), net of tax	$ 17	$ (17)	$ (55)	$ 750

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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