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Financial Information By Business Segments - Financial Information By Business Segments (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 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	$ 15	$ 17	$ 16	$ (55)

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- Definition

non trading commodity mark to market gains (losses), net of tax

+ References

No definition available.

+ Details

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X

- Definition

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.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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