Other Income And Deductions (Schedule Of Other Income) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	$ 33		$ 36		$ 80		$ 64
Allowance for Funds Used During Construction	6		7		12		11
Solar Loan Interest	5		4		11		8
Other	8		4		10		12
Total Other Income	52		51		113		95
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	33		36		80		64
Allowance for Funds Used During Construction	0		0		0		0
Solar Loan Interest	0		0		0		0
Other	2		1		2		3
Total Other Income	35		37		82		67
PSE And G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	0		0		0		0
Allowance for Funds Used During Construction	6		7		12		11
Solar Loan Interest	5		4		11		8
Other	4		1		5		4
Total Other Income	15		12		28		23
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	0	[1]	0	[1]	0	[1]	0	[1]
Allowance for Funds Used During Construction	0	[1]	0	[1]	0	[1]	0	[1]
Solar Loan Interest	0	[1]	0	[1]	0	[1]	0	[1]
Other	2	[1]	2	[1]	3	[1]	5	[1]
Total Other Income	2	[1]	2	[1]	3	[1]	5	[1]
Power [Member]
Component of Other Income, Nonoperating [Line Items]
Total Other Income	$ 35		$ 37		$ 82		$ 67

[1] Other primarily consists of activity at PSEG (as parent company), Energy Holdings, Services and intercompany eliminations.