Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2022

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, 2022 and 2021, and changes to the obligation for the years then ended:

	Con Edison		CECONY
(Millions of Dollars)	2022	2021	2022	2021
Beginning Balance as of January 1,	$577	$577	$504	$508
ARO held for sale (a)	(77)	—	—	—
Changes in estimated cash flows	44	58	43	55
Accretion expense	18	18	14	15
Liabilities settled	(62)	(75)	(62)	(74)
Ending Balance as of December 31, (b)	$500	$577	$499	$504

(a)The asset retirement obligations of the Clean Energy Businesses are reflected in current liabilities held for sale on Con Edison's consolidated balance sheet as of December 31, 2022. See "Assets and Liabilities Held for Sale" in Note A and Note X.

(b)At December 31, 2022, Con Edison and CECONY recorded reductions of $78 million and $77 million, respectively, to the regulatory liability associated with cost of removal to reflect depreciation and interest expense. At December 31, 2021, Con Edison and CECONY recorded reductions of $87 million and $85 million, respectively, to the regulatory liability associated with cost of removal to reflect depreciation and interest expense.