Other Income And Deductions (Schedule Of Other Income) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	$ 186		$ 159		$ 227
Solar Loan Interest	10		6		1
Realized Gains from Rabbi Trust			31
Other	24		25		18
Total Other Income	220		221		246
PSE&G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	0		0		0
Solar Loan Interest	10		6		1
Realized Gains from Rabbi Trust			11
Other	15		9		7
Total Other Income	25		26		8
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	186		159		227
Solar Loan Interest	0		0		0
Realized Gains from Rabbi Trust			7
Other	4		4		6
Total Other Income	190		170		233
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	0	[1]	0	[1]	0	[1]
Solar Loan Interest	0	[1]	0	[1]	0	[1]
Realized Gains from Rabbi Trust			13	[1]
Other	5	[1]	12	[1]	5	[1]
Total Other Income	$ 5	[1]	$ 25	[1]	$ 5	[1]

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