Other Income And Deductions (Schedule Of Other Income) (Details) (USD $) In Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Component of Other Income, Nonoperating [Line Items]
NDT Funds Gains, Interest, Dividend and Other Income	$ 36		$ 35		$ 153		$ 115
Realized Gains from Rabbi Trust			31				31
Other	9		9		23		19
Total Other Income	45		75		176		165
PSE&G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Funds Gains, Interest, Dividend and Other Income	0		0		0		0
Realized Gains from Rabbi Trust			11				11
Other	7		3		16		11
Total Other Income	7		14		16		22
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Funds Gains, Interest, Dividend and Other Income	36		35		153		115
Realized Gains from Rabbi Trust			7				7
Other	1		2		3		4
Total Other Income	37		44		156		126
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Funds Gains, Interest, Dividend and Other Income	0	[1]	0	[1]	0	[1]	0	[1]
Realized Gains from Rabbi Trust			13	[1]			13	[1]
Other	1	[1]	4	[1]	4	[1]	4	[1]
Total Other Income	$ 1	[1]	$ 17	[1]	$ 4	[1]	$ 17	[1]

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