Other Income And Deductions (Schedule Of Other Deductions) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		$ 18	$ 11
Other		3	1
Total Other Deductions		21	12
PSE And G [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		0	0
Other		1	1
Total Other Deductions		1	1
Power [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		18	11
Other		0	0
Total Other Deductions		18	11
Other Entities [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		0	0
Other		2	0
Total Other Deductions	[1]	$ 2	$ 0

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