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Early Plant Retirements/Asset Dispositions Early Plant Retirements/Asset Dispositions (Details) - PSEG Power [Member]	3 Months Ended
	Mar. 31, 2021 USD ($)
Early Plant Retirements/Asset Dispositions [Line Items]
ZEC Charge per kwh	$ 0.004
ZEC Charge per MWh	10
Fossil Fuel Plant
Early Plant Retirements/Asset Dispositions [Line Items]
Property, Plant and Equipment, Net Book value (net of eligible ITC)	4,500,000,000
Other Production-Solar
Early Plant Retirements/Asset Dispositions [Line Items]
Property, Plant and Equipment, Net Book value (net of eligible ITC)	550,000,000
Carrying value of assets and liabilities to be sold	$ 500,000,000

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Amount of assets held-for-sale that are not part of a disposal group.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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