Income Tax (Tables)

3 Months Ended

Mar. 31, 2023

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, 2023 and 2022 is as follows:

	Con Edison				CECONY
(% of Pre-tax income)	2023		2022		2023		2022
STATUTORY TAX RATE
Federal	21	%	21	%	21	%	21	%
Changes in computed taxes resulting from:
State income tax, net of federal income tax benefit	5		5		5		5
Amortization of excess deferred federal income taxes	(3)		(6)		(6)		(7)
Taxes attributable to non-controlling interest	—		2		—		—
Cost of removal	—		1		1		1
Renewable energy credits	—		(1)		—		—
Allowance for uncollectible accounts, net of COVID-19 assistance	—		—		(1)		—
Impacts from the sale of Clean Energy Businesses:
Deferred unamortized ITC recognized on sale of subsidiary	(7)		—		—		—
Changes in state apportionments, net of federal income taxes	(3)		—		—		—
Valuation allowance on state NOLs, net of federal income tax	1		—		—		—
Effective tax rate	14	%	22	%	20	%	20	%