Related-Party Transactions (Schedule Of Related Party Transactions, Receivables) (Details) (Power [Member], USD $) In Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2011		Dec. 31, 2010
Power [Member]
Receivables from PSE&G through BGS and BGSS Contracts	$ 130	[1]	$ 372	[1]
Receivables from PSE&G Related to Gas Supply Hedges for BGSS	29	[1]	58	[1]
Tax Sharing Receivables from (Payable to) PSEG	(31)	[2]	380	[2]
Current Unrecognized Tax Receivable from Parent	(6)	[2]	1	[2]
Receivable from (Payable to) PSEG	0		(3)
Accounts Receivable-Affiliated Companies, net	98		782
Short-Term Loan to Affiliate (demand Note to PSEG)	609	[3]	398	[3]
Working Capital Advances to Services	17	[4]	17	[4]
Long-Term Accrued Taxes Receivable	$ 20	[2]	$ 16	[2]

[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 through March 31, 2012 and year-to-year thereafter. Power has also entered into contracts to supply energy, capacity and ancillary services to PSE&G through the BGS auction process.

[2] PSEG files a consolidated federal income tax return with its affiliated companies. A tax allocation agreement exists between PSEG and each of its affiliated companies. The general operation of these agreements is that the subsidiary company will compute its taxable income on a stand-alone basis. If the result is a net tax liability, such amount shall be paid to PSEG. If there are net operating losses and/or tax credits, the subsidiary shall receive payment for the tax savings from PSEG to the extent that PSEG is able to utilize those benefits.

[3] Power's short-term loans with PSEG are for working capital and other short-term needs. Interest Income and Interest Expense relating to these short-term funding activities were immaterial.

[4] Power and PSE&G have advanced working capital to Services. The amounts are included in Other Noncurrent Assets on Power's and PSE&G's Condensed Consolidated Balance Sheets.