Other Income And Deductions (Schedule Of Other Deductions) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	$ 9		$ 17		$ 29		$ 25
Other	4		2		13		10
Total Other Deductions	13		19		42		35
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	9		17		29		25
Other	1		0		9		7
Total Other Deductions	10		17		38		32
PSE And G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	0		0		0		0
Other	1		1		2		2
Total Other Deductions	1		1		2		2
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	2	[1]	1	[1]	2	[1]	1	[1]
Total Other Deductions	$ 2	[1]	$ 1	[1]	$ 2	[1]	$ 1	[1]

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