Other Income And Deductions (Schedule Of Other Deductions) (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 Realized Losses and Expense	$ 50		$ 45		$ 117
Loss on Early Extinguishment of Debt	17
Other	18		18		44
Total Other Deductions	85		63		161
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expense	50		45		117
Loss on Early Extinguishment of Debt	17
Other	12		8		18
Total Other Deductions	79		53		135
PSE&G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expense	0		0		0
Loss on Early Extinguishment of Debt	0
Other	4		3		3
Total Other Deductions	4		3		3
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expense	0	[1]	0	[1]	0	[1]
Loss on Early Extinguishment of Debt	0	[1]
Other	2	[1]	7	[1]	23	[1]
Total Other Deductions	$ 2	[1]	$ 7	[1]	$ 23	[1]

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