Commitments and Contingent Liabilities - Schedule of Total Minimum Purchase Commitments (Details) - PSEG Power $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Nuclear Fuel Uranium [Member]
Long-term Purchase Commitment [Line Items]
Total five-year minimum purchase requirements	$ 396
Nuclear Fuel Enrichment [Member]
Long-term Purchase Commitment [Line Items]
Total five-year minimum purchase requirements	287
Nuclear Fuel Fabrication [Member]
Long-term Purchase Commitment [Line Items]
Total five-year minimum purchase requirements	179
Natural Gas [Member]
Long-term Purchase Commitment [Line Items]
Total five-year minimum purchase requirements	$ 1,286