Related-Party Transactions (Schedule Of Related Party Transactions, Revenue) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Power [Member]
Revenue from Related Parties	$ 731	[1]	$ 671	[1]
Administrative Billings from Services	(42)	[2]	(45)	[2]
Total Expense Billings from Affiliates	(42)		(45)
PSE And G [Member]
Billings From Power through BGSS	(731)	[1]	(671)	[1]
Administrative Billings from Services	(60)	[2]	(61)	[2]
Total Expense Billings from Affiliates	$ (791)		$ (732)

[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.