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Income Tax - Income Tax Reconciliation (Details) | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
STATUTORY TAX RATE |  |
Federal | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |
State income tax | 4.00% | 4.00%
Taxes attributable to non-controlling interest | (1.00%) | (1.00%)
Cost of removal | 2.00% | 1.00%
Other plant-related items | (1.00%) | 0.00%
Renewable energy credits | (2.00%) | (1.00%)
CARES Act NOL carryback | (1.00%) | 0.00%
Amortization of excess deferred federal income taxes | (9.00%) | (3.00%)
Other | (1.00%) | (1.00%)
Effective tax rate | 12.00% | 20.00%
CECONY |  |
STATUTORY TAX RATE |  |
Federal | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |
State income tax | 5.00% | 5.00%
Taxes attributable to non-controlling interest | 0.00% | 0.00%
Cost of removal | 2.00% | 1.00%
Other plant-related items | (1.00%) | 0.00%
Renewable energy credits | 0.00% | 0.00%
CARES Act NOL carryback | 0.00% | 0.00%
Amortization of excess deferred federal income taxes | (8.00%) | (3.00%)
Other | 0.00% | (1.00%)
Effective tax rate | 19.00% | 23.00%

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