Other Income And Deductions (Schedule Of Other Deductions) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	$ 8		$ 9
Other	8		4
Total Other Deductions	16		13
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	8		9
Other	7		3
Total Other Deductions	15		12
PSE And G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	0		0
Other	1		1
Total Other Deductions	1		1
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	0	[1]	0	[1]
Other	0	[1]	0	[1]
Total Other Deductions	$ 0	[1]	$ 0	[1]

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