Other Income And Deductions (Schedule Of Other Income) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Component of Other Income [Line Items]
Investment Income, Interest and Dividend		$ 52	$ 45	$ 43
Components of Other Income [Roll Forward]
Allowance for Funds Used During Construction		54	56	49
Solar Loan Interest		18	21	22
Donations		(17)	(28)	(2)
Other		(22)	(12)	(10)
Total Other Income and Deductions		85	82	102
PSE&G [Member]
Component of Other Income [Line Items]
Investment Income, Interest and Dividend		0	0	0
Components of Other Income [Roll Forward]
Allowance for Funds Used During Construction		54	56	49
Solar Loan Interest		18	21	22
Donations		0	(1)	(1)
Other		8	9	9
Total Other Income and Deductions		80	85	79
Power [Member]
Component of Other Income [Line Items]
Investment Income, Interest and Dividend		52	45	43
Components of Other Income [Roll Forward]
Allowance for Funds Used During Construction		0	0	0
Solar Loan Interest		0	0	0
Donations		0	(2)	(1)
Other		(31)	(23)	(19)
Total Other Income and Deductions		21	20	23
Other [Member]
Component of Other Income [Line Items]
Investment Income, Interest and Dividend	[1]	0	0	0
Components of Other Income [Roll Forward]
Allowance for Funds Used During Construction	[1]	0	0	0
Solar Loan Interest	[1]	0	0	0
Donations	[1]	(17)	(25)	0
Other	[1]	1	2	0
Total Other Income and Deductions	[1]	$ (16)	$ (23)	$ 0

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