Asset Retirement Obligations (AROs) - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024
Asset Retirement Obligation [Line Items]
Revision to Present Values of Estimated Cash Flows		$ (170)	$ (7)
PSEG Power
Asset Retirement Obligation [Line Items]
Revision to Present Values of Estimated Cash Flows	$ 160		59
PSE&G
Asset Retirement Obligation [Line Items]
Revision to Present Values of Estimated Cash Flows		(10)	$ 52
Impact of change in ARO in operations		$ 0