Other Income And Deductions (Schedule Of Other Income) (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 Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		$ 45	$ 23		$ 76		$ 48
Allowance for Funds Used During Construction		14	10		28		21
Rabbi Trust Gains Interest Dividend and Other Income		4	3		20		6
Solar Loan Interest		5	5		10		11
Other		2	3		8		6
Total Other Income		70	44		142		92
PSE And G [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		0	0		0		0
Allowance for Funds Used During Construction		14	10		28		21
Rabbi Trust Gains Interest Dividend and Other Income		1	1		4		1
Solar Loan Interest		5	5		10		11
Other		2	3		5		6
Total Other Income		22	19		47		39
Power [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		45	23		76		48
Allowance for Funds Used During Construction		0	0		0		0
Rabbi Trust Gains Interest Dividend and Other Income		1	1		5		2
Solar Loan Interest		0	0		0		0
Other		0	1		3		1
Total Other Income		46	25		84		51
Other Entities [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income	[1]	0	0		0		0
Allowance for Funds Used During Construction	[1]	0	0		0		0
Rabbi Trust Gains Interest Dividend and Other Income		2	1	[1]	11	[1]	3	[1]
Solar Loan Interest	[1]	0	0		0		0
Other	[1]	0	(1)		0		(1)
Total Other Income	[1]	$ 2	$ 0		$ 11		$ 2

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