Asset Retirement Obligations (AROs) (Impact Of The Revisions On Asset Retirement Obligation) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		$ 743	$ 677
Liabilities Settled		(5)	(2)
Liabilities Incurred		14	23
Accretion Expense		26	30
Accretion Expense Deferred and Recovered in Rate Base	[1]	16	15
ARO Liability, Ending Balance		679	743
Asset Retirement Obligation, Revision of Estimate		(115)
PSE&G [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		290	274
Liabilities Settled		(4)	(2)
Liabilities Incurred		1	3
Accretion Expense		0	0
Accretion Expense Deferred and Recovered in Rate Base	[1]	16	15
ARO Liability, Ending Balance		218	290
Asset Retirement Obligation, Revision of Estimate		(85)
Power [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		450	400
Liabilities Settled		(1)	0
Liabilities Incurred		12	20
Accretion Expense		26	30
Accretion Expense Deferred and Recovered in Rate Base	[1]	0	0
ARO Liability, Ending Balance		457	450
Asset Retirement Obligation, Revision of Estimate		(30)
Other [Member]
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
ARO Liability, Beginning Balance		3	3
Liabilities Settled		0	0
Liabilities Incurred		1	0
Accretion Expense		0	0
Accretion Expense Deferred and Recovered in Rate Base	[1]	0	0
ARO Liability, Ending Balance		4	$ 3
Asset Retirement Obligation, Revision of Estimate		$ 0

[1] Not reflected as expense in Consolidated Statements of Operations