Related-Party Transactions (Schedule Of Related Party Transactions, Payables) (Detail) - Public Service Electric and Gas Company [Member] - USD ($) $ in Millions		Jun. 30, 2022	Dec. 31, 2021
Related Party Transaction [Line Items]
Payable To PSEG Power	[1]	$ 144	$ 244
Payable To Services	[2]	81	111
Payable to PSEG	[3]	26	63
Accounts Payable - Affiliated Companies		251	418
Noncurrent Payable to PSEG Power	[1]	9	0
Working Capital Advances to Services	[4]	33	33
Long-Term Accrued Taxes Payable		$ 7	$ 6

[1] PSE&G has entered into a requirements contract with PSEG Power under which PSEG Power provides the gas supply services needed to meet PSE&G’s BGSS and other contractual requirements. PSEG Power has also entered into contracts to supply energy, capacity and ancillary services to PSE&G through the BGS auction process and sells ZECs to PSE&G under the ZEC program. As of June 1, 2022, PSEG Power has no BGS contracts supplying PSE&G. The rates in the BGS and BGSS contracts and for the ZEC sales are prescribed by the BPU. BGS and BGSS sales are billed and settled on a monthly basis. ZEC sales are billed on a monthly basis and settled annually following completion of each energy year. In addition, PSEG Power and PSE&G provide certain technical services for each other generally at cost in compliance with FERC and BPU affiliate rules.

[2] Services provides and bills administrative services to PSE&G at cost. In addition, PSE&G has other payables to Services, including amounts related to certain common costs, which Services pays on behalf of PSE&G.

[3] 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 NOLs 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.

[4] PSE&G has advanced working capital to Services. The amount is included in Other Noncurrent Assets on PSE&G’s Condensed Consolidated Balance Sheets