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Income Tax - Schedule of Income Tax Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
STATUTORY TAX RATE |  |  |
Federal | 21.00% | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |  |
State income taxes, net of federal income taxes | 5.00% | 5.00% | 6.00%
Cost of removal | 1.00% | 1.00% | 1.00%
Allowance for uncollectible accounts, net of COVID-19 assistance | (1.00%) | 0.00% | 0.00%
Amortization of excess deferred federal income taxes | (10.00%) | (6.00%) | (9.00%)
Other | (1.00%) | 0.00% | (1.00%)
Changes in state apportionments, net of federal income taxes | 0 | (0.01) | 0.06
Deferred unamortized ITC recognized on sale of subsidiary | 0 | (0.04) | 0
Effective tax rate | 15.00% | 16.00% | 24.00%
CECONY |  |  |
STATUTORY TAX RATE |  |  |
Federal | 21.00% | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |  |
State income taxes, net of federal income taxes | 5.00% | 5.00% | 5.00%
Cost of removal | 1.00% | 2.00% | 1.00%
Allowance for uncollectible accounts, net of COVID-19 assistance | (1.00%) | (1.00%) | 0.00%
Amortization of excess deferred federal income taxes | (10.00%) | (8.00%) | (10.00%)
Other | (1.00%) | (1.00%) | (1.00%)
Changes in state apportionments, net of federal income taxes | 0 | 0 | 0
Deferred unamortized ITC recognized on sale of subsidiary | 0 | 0 | 0
Effective tax rate | 15.00% | 18.00% | 16.00%

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