Commitments And Contingent Liabilities (Minimum Fuel Purchase Requirements) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Nuclear Fuel [Member]
Long-term Purchase Commitment [Line Items]
Total minimum purchase requirements	$ 226
Nuclear Fuel Enrichment [Member]
Long-term Purchase Commitment [Line Items]
Total minimum purchase requirements	331
Nuclear Fuel Fabrication [Member]
Long-term Purchase Commitment [Line Items]
Total minimum purchase requirements	193
Natural Gas [Member]
Long-term Purchase Commitment [Line Items]
Total minimum purchase requirements	1,266	[1]
Obligation to be transferred
Long-term Purchase Commitment [Line Items]
Total minimum purchase requirements	$ 39
PSEG Power LLC [Member]
Long-term Purchase Commitment [Line Items]
Coverage percentage of nuclear fuel commitments of uranium, enrichment, and fabrication requirements	100.00%

[1] Approximately $39 million of commitments related to natural gas were transferred with the sale of PSEG Power’s fossil generation plants in February 2022