Related-Party Transactions (Schedule Of Related Party Transactions, Payables) (Detail) - Public Service Electric and Gas Company [Member] - USD ($) $ in Millions		Mar. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
Payable To PSEG Power	[1]	$ 311	$ 313
Payable To Services	[2]	85	98
Payable to PSEG	[3]	117	74
Accounts Payable - Affiliated Companies		513	485
Working Capital Advances to Services	[4]	33	33
Long-Term Accrued Taxes Payable		$ 9	$ 9

[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. Since June 1, 2022, PSEG Power had no contracts to supply energy, capacity and ancillary services to PSE&G through the BGS auction process. In addition, PSEG Power sells ZECs to PSE&G from its nuclear units under the ZEC program as approved by the BPU. 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. In addition, PSEG pays all payroll taxes and receives reimbursement from its affiliated companies for their respective portions.

[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.