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, 2023 $ / DTH $ / Derivative $ / mwh	Dec. 31, 2022 $ / Derivative $ / DTH $ / mwh
Natural Gas Dth [Member]
Derivative [Line Items]
Net notional volume of derivative transactions | $ / DTH	52	49
Electricity MWh [Member]
Derivative [Line Items]
Net notional volume of derivative transactions	(63)	(60)
FTRs MWh [Member]
Derivative [Line Items]
Net notional volume of derivative transactions	31	24
Interest Rate Swaps [Member]
Derivative [Line Items]
Net notional volume of derivative transactions | $ / Derivative	900	1,050