Other Income And Deductions (Schedule Of Other Income) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		$ 31	$ 25
Allowance for Funds Used During Construction		14	11
Rabbi Trust Gains Interest Dividend and Other Income		16
Solar Loan Interest		5	6
Other		6	6
Total Other Income		72	48
PSE And G [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		0	0
Allowance for Funds Used During Construction		14	11
Rabbi Trust Gains Interest Dividend and Other Income		3
Solar Loan Interest		5	6
Other		3	3
Total Other Income		25	20
Power [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		31	25
Allowance for Funds Used During Construction		0	0
Rabbi Trust Gains Interest Dividend and Other Income		4
Solar Loan Interest		0	0
Other		3	1
Total Other Income		38	26
Other Entities [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	[1]	0	0
Allowance for Funds Used During Construction	[1]	0	0
Rabbi Trust Gains Interest Dividend and Other Income	[1]	9
Solar Loan Interest	[1]	0	0
Other	[1]	0	2
Total Other Income	[1]	$ 9	$ 2

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