Income Tax (Tables)

9 Months Ended

Sep. 30, 2020

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 September 30, 2020 and 2019 is as follows:

	Con Edison				CECONY
(% of Pre-tax income)	2020		2019		2020		2019
STATUTORY TAX RATE
Federal	21	%	21	%	21	%	21	%
Changes in computed taxes resulting from:
State income tax	6		5		5		6
Amortization of excess deferred federal income taxes	(7)		(3)		(8)		(3)
Taxes attributable to non-controlling interest	(1)		(1)		—		—
Cost of removal	1		1		2		—
Other plant-related items	(1)		(1)		(1)		—
Renewable energy credits	(1)		(1)		—		—
Amortization of excess deferred state income taxes	—		(1)		—		(1)
Reserve for uncertain tax positions	—		1		—		—
Prior period federal income tax return adjustments	—		(2)		—		—
Other	1		—		—		(1)
Effective tax rate	19	%	19	%	19	%	22	%

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 nine months ended September 30, 2020 and 2019 is as follows:

	Con Edison				CECONY
(% of Pre-tax income)	2020		2019		2020		2019
STATUTORY TAX RATE
Federal	21	%	21	%	21	%	21	%
Changes in computed taxes resulting from:
State income tax	5		5		5		6
Amortization of excess deferred federal income taxes	(10)		(3)		(10)		(3)
Taxes attributable to non-controlling interest	(1)		(2)		—		—
Cost of removal	2		1		2		1
Other plant-related items	(1)		—		(2)		(1)
Renewable energy credits	(2)		(2)		—		—
Amortization of excess deferred state income taxes	—		(1)		—		(1)
Prior period federal income tax return adjustments	—		(1)		—		—
Other	—		—		1		(1)
Effective tax rate	14	%	18	%	17	%	22	%