Related-Party Transactions (Schedule Of Related Party Transactions, Revenue) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Power [Member]
Total Revenue from Affiliates	$ 1,797	[1]	$ 1,802	[1]	$ 2,215	[1]
Administrative Billings from Services	(178)	[2]	(154)	[2]	(147)	[2]
Affiliate Costs	(178)		(154)		(147)
PSE&G [Member]
Billings for BGS and BGSS	(1,797)	[1]	(1,802)	[1]	(2,215)	[1]
Administrative Billings from Services	255	[2]	230	[2]	210	[2]
Affiliate Costs	$ (2,052)		$ (2,032)		$ (2,425)

[1] PSE&G has entered into a requirements contract with Power under which Power provides the gas supply services needed to meet PSE&G’s BGSS and other contractual requirements. Power has also entered into contracts to supply energy, capacity and ancillary services to PSE&G through the BGS auction process.

[2] Services provides and bills administrative services to Power and PSE&G at cost. In addition, Power and PSE&G have other payables to Services, including amounts related to certain common costs, such as pension and OPEB costs, which Services pays on behalf of each of the operating companies.