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Income Tax - Income Tax Reconciliation (Details) | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
STATUTORY TAX RATE |  |
Federal | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |
State income tax | 4.00% | 4.00%
Amortization of excess deferred federal income taxes | (9.00%) | (9.00%)
Taxes attributable to non-controlling interests | 0.00% | (1.00%)
Cost of removal | 2.00% | 2.00%
Other plant-related items | (1.00%) | (1.00%)
Renewable energy credits | (1.00%) | (2.00%)
CARES Act NOL carryback | 0.00% | (1.00%)
Other | 0.00% | (1.00%)
Effective tax rate | 16.00% | 12.00%
CECONY |  |
STATUTORY TAX RATE |  |
Federal | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |
State income tax | 5.00% | 5.00%
Amortization of excess deferred federal income taxes | (7.00%) | (8.00%)
Taxes attributable to non-controlling interests | 0.00% | 0.00%
Cost of removal | 1.00% | 2.00%
Other plant-related items | 0.00% | (1.00%)
Renewable energy credits | 0.00% | 0.00%
CARES Act NOL carryback | 0.00% | 0.00%
Other | 0.00% | 0.00%
Effective tax rate | 20.00% | 19.00%

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