Other Income And Deductions (Schedule Of Other Deductions) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	$ 6		$ 20
Other	6		9
Total Other Deductions	12		29
Power [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	6		20
Other	4		8
Total Other Deductions	10		28
PSE And G [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	0		0
Other	0		1
Total Other Deductions	0		1
Other Segments [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	0	[1]	0	[1]
Other	2	[1]	0	[1]
Total Other Deductions	$ 2	[1]	$ 0	[1]

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