Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Name:	us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Commitments And Contingent Liabilities (Litigation) (Detail) - PSEG Power [Member] - Sewaren 7 Litigation [Member] - USD ($) $ in Millions	Sep. 30, 2022	Jan. 31, 2021
Loss Contingencies [Line Items]
Original Claim Amount	$ 93
Maximum [Member]
Loss Contingencies [Line Items]
Complaint amount		$ 68