Other Income And Deductions (Schedule Of Other Deductions) (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		$ 6	$ 8	$ 13	$ 26
Other		3	2	7	5
Total Other Deductions		9	10	20	31
PSE And G [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		0	0	0	0
Other		1	1	2	2
Total Other Deductions		1	1	2	2
Power [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		6	8	13	26
Other		1	1	1	1
Total Other Deductions		7	9	14	27
Other Entities [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	[1]	0	0	0	0
Other	[1]	1	0	4	2
Total Other Deductions	[1]	$ 1	$ 0	$ 4	$ 2

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