Income Taxes (Schedule Of Effective Tax Rates) (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
PSEG [Member]
Effective tax rate	40.90%	41.50%	33.70%	41.60%
Power [Member]
Effective tax rate	41.20%	41.10%	40.30%	41.20%
PSE And G [Member]
Effective tax rate	38.40%	41.00%	32.70%	40.70%