Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2025

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

The following table represents the balance of asset retirement obligations as of December 31, 2025 and 2024, and changes to the obligation for the years then ended:

	Con Edison				CECONY
(Millions of Dollars)	2025	(a)	2024	(a)	2025	2024
Beginning Balance as of January 1,	$453		$522		$452	$520
Changes in estimated cash flows	84		(21)		82	(21)
Accretion expense	18		20		18	20
Liabilities settled	(77)		(68)		(76)	(67)
Ending Balance as of December 31, (b)	$478		$453		$476	$452

(a)The asset retirement obligations of Broken Bow II in 2024 are reflected in current liabilities held for sale on Con Edison's consolidated balance sheet as of December 31, 2024. For 2024, $3 million of asset retirement obligations related to Broken Bow II are not shown in the table above, as they are already excluded from the beginning balance as of January 1, 2024 for Con Edison. Broken Bow II was sold and transferred in January 2025. See Note A, Note W, and Note X.

(b)At December 31, 2025, Con Edison and CECONY recorded reductions of $64 million and $63 million, respectively, to the regulatory liability associated with cost of removal to reflect depreciation and interest expense. At December 31, 2024, Con Edison and CECONY recorded reductions of $85 million and $84 million, respectively, to the regulatory liability associated with cost of removal to reflect depreciation and interest expense.