Other Income And Deductions (Schedule Of Other Income) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	$ 194		$ 186		$ 159
Allowance for Funds Used During Construction	23		9		5
Available For Sale Securities Realized Gains Rabbi Trust	11				31
Solar Loan Interest	18		10		6
Other	14		15		20
Total Other Income	260		220		221
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	194		186		159
Allowance for Funds Used During Construction	0		0		0
Available For Sale Securities Realized Gains Rabbi Trust	2				7
Solar Loan Interest	0		0		0
Other	3		4		4
Total Other Income	199		190		170
PSE&G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	0		0		0
Allowance for Funds Used During Construction	23		9		5
Available For Sale Securities Realized Gains Rabbi Trust	4				11
Solar Loan Interest	18		10		6
Other	7		6		4
Total Other Income	52		25		26
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	0	[1]	0	[1]	0	[1]
Allowance for Funds Used During Construction	0	[1]	0	[1]	0	[1]
Available For Sale Securities Realized Gains Rabbi Trust	5				13
Solar Loan Interest	0	[1]	0	[1]	0	[1]
Other	4	[1]	5	[1]	12	[1]
Total Other Income	$ 9	[1]	$ 5	[1]	$ 25	[1]

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