Other Income And Deductions (Schedule Of Other Income) (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 Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		$ 41	$ 21		$ 117		$ 69
Allowance for Funds Used During Construction		14	14		42		35
Rabbi Trust Gains Interest Dividend and Other Income		2	4		22		10
Solar Loan Interest		6	6		16		17
Other		3	2		11		8
Total Other Income		66	47		208		139
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	14		42		35
Rabbi Trust Gains Interest Dividend and Other Income		1	1		5		2
Solar Loan Interest		6	6		16		17
Other		2	1		7		7
Total Other Income		23	22		70		61
Power [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		41	21		117		69
Allowance for Funds Used During Construction		0	0		0		0
Rabbi Trust Gains Interest Dividend and Other Income		1	0		6		2
Solar Loan Interest		0	0		0		0
Other		1	2		4		3
Total Other Income		43	23		127		74
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		0	3	[1]	11	[1]	6	[1]
Solar Loan Interest	[1]	0	0		0		0
Other	[1]	0	(1)		0		(2)
Total Other Income	[1]	$ 0	$ 2		$ 11		$ 4

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