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Income Tax (Tables) | 9 Months Ended
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Sep. 30, 2025
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, 2025 and 2024 is as follows:
| For the Three Months Ended September 30,
| Con Edison | CECONY
| 2025 | 2024 | 2025 | 2024
(Millions of Dollars) (% of Pre-tax income) | $ | % | $ | % | $ | % | $ | %
STATUTORY TAX RATE |  |  |  |  |  |  |  |
Federal | $187 | 21.0 | % | $152 | 21.0 | % | $173 | 21.0 | % | $138 | 21.0 | %
Changes in computed taxes resulting from: |  |  |  |  |  |  |  |
State income taxes, net of federal income taxes (a) | 47 | 5.3 |  | 39 | 5.5 |  | 43 | 5.2 |  | 34 | 5.2 |
MTA Surcredit amortization, net of federal taxes | (5) | (0.6) |  | — | — |  | (5) | (0.6) |  | 1 | 0.2 |
Tax Credits | (4) | (0.5) |  | (7) | (1.0) |  | (3) | (0.4) |  | (4) | (0.6) |
Changes in unrecognized tax benefits | 1 | 0.1 |  | 1 | 0.1 |  | 1 | 0.1 |  | 1 | 0.1 |
Amortization of excess deferred federal income taxes (b) | (11) | (1.3) |  | (50) | (6.9) |  | (9) | (1.1) |  | (48) | (7.4) |
Allowance for uncollectible accounts, net of regulatory recovery | (15) | (1.6) |  | (10) | (1.4) |  | (15) | (1.8) |  | (9) | (1.4) |
Cost of removal | 10 | 1.1 |  | 10 | 1.4 |  | 9 | 1.1 |  | 9 | 1.4 |
Other | (8) | (0.8) |  | (2) | (0.2) |  | (7) | (0.8) |  | (3) | (0.3) |
Effective tax rate | $202 | 22.7 | % | $133 | 18.5 | % | $187 | 22.7 | % | $119 | 18.2 | %
(a) State income taxes in New York account for the majority of the tax eﬀect in this category. (b) For CECONY, the amortization of excess deferred federal income taxes is lower in the three months ended September 30, 2025, due to the completion of regulatory amortization of non-plant and certain plant-related excess deferred federal income taxes as of December 31, 2024, representing an accelerated refund of the related regulatory liability under its current New York electric and gas rate plans. Con Edison’s income tax expense was $493 million and $307 million for the nine months ended September 30, 2025 and 2024, respectively. CECONY’s income tax expense was $462 million and $301 million for the nine months ended September 30, 2025 and 2024, respectively. 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, 2025 and 2024 is as follows:
| For the Nine Months Ended September 30,
| Con Edison | CECONY
| 2025 | 2024 | 2025 | 2024
(Millions of Dollars) (% of Pre-tax income) | $ | % | $ | % | $ | % | $ | %
STATUTORY TAX RATE |  |  |  |  |  |  |  |
Federal | $466 | 21.0 | % | $382 | 21.0 | % | $434 | 21.0 | % | $361 | 21.0 | %
Changes in computed taxes resulting from: |  |  |  |  |  |  |  |
State income taxes, net of federal income taxes (a) | 116 | 5.2 |  | 91 | 5.0 |  | 108.0 | 5.2 |  | 89.0 | 5.2 |
MTA Surcredit amortization, net of federal taxes | (26) | (1.2) |  | (2) | (0.1) |  | (25.0) | (1.2) |  | (1.0) | (0.1) |
Tax Credits | (13) | (0.6) |  | (20) | (1.1) |  | (10.0) | (0.5) |  | (10.0) | (0.6) |
Changes in unrecognized tax benefits | 2 | 0.1 |  | 2 | 0.1 |  | 2.0 | 0.2 |  | 2.0 | 0.1 |
Amortization of excess deferred federal income taxes (b) | (34) | (1.5) |  | (152) | (8.3) |  | (28.0) | (1.3) |  | (147.0) | (8.5) |
Allowance for uncollectible accounts, net of regulatory recovery | (36) | (1.6) |  | (14) | (0.8) |  | (36.0) | (1.8) |  | (13.0) | (0.8) |
Cost of removal | 29 | 1.3 |  | 30 | 1.7 |  | 26.0 | 1.3 |  | 27.0 | 1.6 |
Other | (11) | (0.5) |  | (10) | (0.6) |  | (9) | (0.5) |  | (7) | (0.4) |
Effective tax rate | $493 | 22.2 | % | $307 | 16.9 | % | $462 | 22.4 | % | $301 | 17.5 | %
(a) State income taxes in New York account for the majority of the tax eﬀect in this category. (b) For CECONY, the amortization of excess deferred federal income taxes is lower in the nine months ended September 30, 2025, due to the completion of regulatory amortization of non-plant and certain plant-related excess deferred federal income taxes as of December 31, 2024, representing an accelerated refund of the related regulatory liability under its current New York electric and gas rate plans.

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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