Other Income And Deductions (Schedule Of Other Deductions) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	$ 11		$ 20		$ 40		$ 45
Other	1		6		14		16
Total Other Deductions	12		26		54		61
Power [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	11		20		40		45
Other	0		0		9		7
Total Other Deductions	11		20		49		52
PSE And G [Member]
Component of Other Income, Nonoperating [Line Items]
NDT Fund Realized Losses and Expenses	0		0		0		0
Other	1		6		3		8
Total Other Deductions	1		6		3		8
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	0	[1]	0	[1]	2	[1]	1	[1]
Total Other Deductions	$ 0	[1]	$ 0	[1]	$ 2	[1]	$ 1	[1]

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