Income Tax (Tables)

6 Months Ended

Jun. 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 six months ended June 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		5
Amortization of excess deferred federal income taxes	(12	)	(4	)	(12	)	(4	)
Taxes attributable to non-controlling interest	(1	)	(1	)	—		—
Cost of removal	2		1		2		1
Other plant-related items	(2	)	(1	)	(2	)	—
Renewable energy credits	(3	)	(2	)	—		—
CARES Act NOL carryback	(1	)	—		—		—
Amortization of excess deferred state income taxes	—		(1	)	—		(1	)
Other	1		(1	)	1		(1	)
Effective tax rate	10	%	17	%	15	%	21	%

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 June 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		6		6		5
Amortization of excess deferred federal income taxes	(20	)	(9	)	(25	)	(9	)
Taxes attributable to non-controlling interest	(2	)	(4	)	—		—
Cost of removal	4		2		5		2
Other plant-related items	(3	)	(1	)	(4	)	(1	)
Allowance for uncollectible accounts	1		—		1		—
Renewable energy credits	(4	)	(4	)	—		—
Amortization of excess deferred state income taxes	—		(2	)	—		(2	)
Other	1		1		—		(1	)
Effective tax rate	4	%	10	%	4	%	15	%