Other Income And Deductions (Schedule Of Other Deductions) (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		$ 8	$ 5	$ 21	$ 31
Other		2	3	9	8
Total Other Deductions		10	8	30	39
PSE And G [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		0	0	0	0
Other		1	1	3	3
Total Other Deductions		1	1	3	3
Power [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses		8	5	21	31
Other		0	1	1	2
Total Other Deductions		8	6	22	33
Other Entities [Member]
Component of Other Deductions [Line Items]
NDT Fund Realized Losses and Expenses	[1]	0	0	0	0
Other	[1]	1	1	5	3
Total Other Deductions	[1]	$ 1	$ 1	$ 5	$ 3

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