Income Tax (Tables)

3 Months Ended

Mar. 31, 2026

Income Tax Disclosure [Abstract]

Schedule of Income Tax Reconciliation

Reconciliation of the difference between income tax expense and the amount computed by applying the prevailing statutory income tax rate to income before income taxes for the three months ended March 31, 2026 and 2025 is as follows:

	For the Three Months Ended March 31,
	Con Edison						CECONY
	2026			2025			2026			2025
(Millions of Dollars) (% of Pre-tax income)	$	%		$	%		$	%		$	%
U.S. Federal Statutory Tax Rate (a)	$258	21.0	%	$217	21.0	%	$202	21.0	%	$204	21.0	%
State Income Taxes:
State income taxes, net of federal income taxes (b)	64	5.2		55	5.4		51	5.3		51	5.3
MTA Surcredit amortization, net of federal income taxes	(10)	(0.8)		(13)	(1.3)		(9)	(1.0)		(12)	(1.3)
Tax Credits	(3)	(0.3)		(4)	(0.4)		(2)	(0.2)		(3)	(0.3)
Nontaxable or Nondeductible items	(1)	—		(1)	(0.1)		—	—		(1)	(0.1)
Changes in unrecognized tax benefits	—	—		1	0.1		—	—		1	0.1
Other Adjustments:
Amortization of excess deferred federal income taxes	(16)	(1.3)		(12)	(1.1)		(14)	(1.5)		(10)	(1.0)
Allowance for uncollectible accounts, net of regulatory recovery	(6)	(0.5)		(13)	(1.2)		(6)	(0.6)		(13)	(1.3)
Cost of removal	13	1.1		11	1.0		12	1.3		10	1.0
Other	4	0.3		1	0.1		(3)	(0.3)		—	—
Effective tax rate	$303	24.7	%	$242	23.5	%	$231	24.0	%	$227	23.4	%

(a)    Income before income tax expense is attributable to domestic operations.

(b)    State income taxes in New York account for the majority of the tax effect in this category.