Financial Risk Management Activities (Schedule Of Reconciliation For Derivative Activity Included In Accumulated Other Comprehensive Loss) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Less: Gain Reclassified to Income, After-Tax	$ 6
PSEG [Member]
Gain (Loss) Recognized in AOCI, After-Tax	(299)
Less: Gain Reclassified to Income, After-Tax	6
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Less: Gain Reclassified into Income, Pre-Tax	(12)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | PSEG [Member]
Balance as of Beginning of Year	12	54
Gain (Loss) Recognized in AOCI, Pre-Tax	(4)	28
Less: Gain Reclassified into Income, Pre-Tax	(12)	(70)
Balance as of End of Year	(4)	12
Balance as of Beginning of Year	7	31
Gain (Loss) Recognized in AOCI, After-Tax	2	(17)
Less: Gain Reclassified to Income, After-Tax	7	41
Balance as of End of Year	$ (2)	$ 7