Other Income (Deductions) (Schedule Of Other Income (Deductions)) (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		$ 15	$ 13	$ 27	$ 23
Allowance for Funds Used During Construction		13	14	27	28
Solar Loan Interest		5	5	9	10
Other		1	1	3	4
Other Income (Deductions)		34	33	66	65
PSE And G [Member]
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		0	0	0	0
Allowance for Funds Used During Construction		13	14	27	28
Solar Loan Interest		5	5	9	10
Other		2	2	4	5
Other Income (Deductions)		20	21	40	43
Power [Member]
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends		15	13	27	23
Allowance for Funds Used During Construction		0	0	0	0
Solar Loan Interest		0	0	0	0
Other		(2)	(1)	(3)	0
Other Income (Deductions)		13	12	24	23
Other Entities [Member]
Component of Other Income (Deductions) [Line Items]
NDT Fund Interest and Dividends	[1]	0	0	0	0
Allowance for Funds Used During Construction	[1]	0	0	0	0
Solar Loan Interest	[1]	0	0	0	0
Other	[1]	1	0	2	(1)
Other Income (Deductions)	[1]	$ 1	$ 0	$ 2	$ (1)

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