Other Income And Deductions (Schedule Of Other Income) (Detail) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2015		Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		$ 24		$ 55	$ 78		$ 133
Allowance for Funds Used During Construction		14		8	36		21
Solar Loan Interest		6		6	18		18
Gain on Insurance Recovery					28
Other		3		6	11		13
Total Other Income		47		75	171		185
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		8	36		21
Solar Loan Interest		6		6	18		18
Gain on Insurance Recovery					0
Other		2		2	5		5
Total Other Income		22		16	59		44
Power [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		24		55	78		133
Allowance for Funds Used During Construction		0		0	0		0
Solar Loan Interest		0		0	0		0
Gain on Insurance Recovery					28
Other		1		1	3		2
Total Other Income		25		56	109		135
Other Entities [Member]
Component of Other Income [Line Items]
NDT Fund Gains, Interest, Dividend and Other Income		0	[1]	0	0	[1]	0	[1]
Allowance for Funds Used During Construction		0	[1]	0	0	[1]	0	[1]
Solar Loan Interest		0	[1]	0	0	[1]	0	[1]
Gain on Insurance Recovery					0
Other		0	[1]	3	3	[1]	6	[1]
Total Other Income	[1]	$ 0		$ 3	$ 3		$ 6

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