Other Income And Deductions (Schedule Of Other Deductions) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	$ 11		$ 6
Other	1		6
Total Other Deductions	12		12
PSE And G [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	0		0
Other	1		0
Total Other Deductions	1		0
Power [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	11		6
Other	0		4
Total Other Deductions	11		10
Other Entities [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	0	[1]	0	[1]
Other	0	[1]	2	[1]
Total Other Deductions	$ 0	[1]	$ 2	[1]

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