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Financial Risk Management Activities - Schedule of Net Notional Volume for Open Derivative Contracts (Details) - PSEG Power [Member]	12 Months Ended
	Dec. 31, 2024 $ / MWh $ / $ $ / dth	Dec. 31, 2023 $ / dth $ / MWh $ / $
Natural Gas Dth [Member]
Derivative [Line Items]
Net notional volume of derivative transactions | $ / dth	70	66
Electricity Mwh [Member]
Derivative [Line Items]
Net notional volume of derivative transactions	(49)	(60)
Ftrs Mwh [Member]
Derivative [Line Items]
Net notional volume of derivative transactions	16	19
Interest Rate Swaps [Member]
Derivative [Line Items]
Net notional volume of derivative transactions | $ / $	2,290	2,000

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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- Definition

Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract but not the derivative contract itself.

+ References

No definition available.

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- Definition

Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract measured in volume but not the derivative contract itself.

+ References

No definition available.

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