Commitments And Contingent Liabilities (Regulatory Proceedings) (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended				12 Months Ended		24 Months Ended	12 Months Ended									12 Months Ended
	May 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011 MW Generator	Dec. 31, 2013 New Jersey Clean Energy Program [Member]	Dec. 31, 2013 PSEG [Member] Superstorm Sandy [Member]	Dec. 31, 2012 PSEG [Member] Superstorm Sandy [Member]	Dec. 31, 2013 PSEG [Member] Superstorm Sandy [Member]	Dec. 31, 2013 Power [Member]	Dec. 31, 2012 Power [Member]	Dec. 31, 2011 Power [Member]	Dec. 31, 2013 Power [Member] Superstorm Sandy [Member]	Dec. 31, 2012 Power [Member] Superstorm Sandy [Member]	Dec. 31, 2013 PSE&G [Member] MW	Dec. 31, 2012 PSE&G [Member]	Dec. 31, 2011 PSE&G [Member]	Dec. 31, 2013 PSE&G [Member] New Jersey Clean Energy Program [Member]	Dec. 31, 2012 PSE&G [Member] Superstorm Sandy [Member]
Loss Contingencies [Line Items]
Aggregate funding for New Jersey Clean Energy Program					$ 345												$ 200
Discounted liability recorded-current																	142
Number of Generators selected under LCAPP				3
Aggregate notional amount of MW capacity				2,000
SOCA payments term	15 years
Percentage of installed capacity under LCAPP PSE&G will be serving														52.00%
Number of installed capacity under LCAPP PSE&G will be serving														1,300
Costs recognized in Operation and Maintenance Expense		2,887	2,632	2,481					1,224	1,127	1,105	79	85	1,639	1,508	1,372		40
Costs incurred to restore service																		295
Cost recorded as Property, Plant and Equipment																		75
Costs recorded as Regulatory Asset																		180
Proceeds from insurance recoveries						25	25	50				25	19					6
Estimate of Total Costs required to restore damaged facilities		$ 426							$ 364					$ 62