Financial Risk Management Activities (Schedule Of Net Notional Volume For Open Derivative Contracts) (Detail) - PSEG Power [Member] $ / mwh in Millions, $ / Derivative in Millions, $ / DTH in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2024 $ / mwh $ / DTH $ / Derivative	Dec. 31, 2023 $ / mwh $ / DTH $ / Derivative
Natural Gas Dth [Member]
Derivative [Line Items]
Net notional volume of derivative transactions | $ / DTH	68	66
Electricity MWh [Member]
Derivative [Line Items]
Net notional volume of derivative transactions	(64)	(60)
FTRs MWh [Member]
Derivative [Line Items]
Net notional volume of derivative transactions	27	19
Interest Rate Swaps [Member]
Derivative [Line Items]
Net notional volume of derivative transactions | $ / Derivative	1,250	2,000