Other Income And Deductions (Schedule Of Other Deductions) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	$ 17		$ 13		$ 25		$ 22
Other	2		2		10		6
Total Other Deductions	19		15		35		28
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	17		13		25		22
Other	0		1		7		4
Total Other Deductions	17		14		32		26
PSE And G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	0		0		0		0
Other	1		0		2		1
Total Other Deductions	1		0		2		1
Other Segments [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	0	[1]	0	[1]	0	[1]	0	[1]
Other	1	[1]	1	[1]	1	[1]	1	[1]
Total Other Deductions	$ 1	[1]	$ 1	[1]	$ 1	[1]	$ 1	[1]

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