Other Income And Deductions (Schedule Of Other Deductions) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		$ 7	$ 18
Other		4	3
Total Other Deductions		11	21
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		7	18
Other		0	0
Total Other Deductions		7	18
Other Entities [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	[1]	0	0
Other	[1]	3	2
Total Other Deductions	[1]	$ 3	$ 2

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