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Income Tax - Income Tax Reconciliation (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
STATUTORY TAX RATE |  |  |  |
Federal | 21.00% | 21.00% | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |  |  |
State income tax | 6.00% | 6.00% | 5.00% | 5.00%
Amortization of excess deferred federal income taxes | (20.00%) | (9.00%) | (12.00%) | (4.00%)
Taxes attributable to non-controlling interest | (2.00%) | (4.00%) | (1.00%) | (1.00%)
Cost of removal | 4.00% | 2.00% | 2.00% | 1.00%
Other plant-related items | (3.00%) | (1.00%) | (2.00%) | (1.00%)
Allowance for uncollectible accounts | 1.00% | 0.00% |  |
Renewable energy credits | (4.00%) | (4.00%) | (3.00%) | (2.00%)
Amortization of excess deferred state income taxes | 0.00% | (2.00%) | 0.00% | (1.00%)
CARES Act NOL carryback |  |  | (1.00%) | 0.00%
Other | 1.00% | 1.00% | 1.00% | (1.00%)
Effective tax rate | 4.00% | 10.00% | 10.00% | 17.00%
CECONY |  |  |  |
STATUTORY TAX RATE |  |  |  |
Federal | 21.00% | 21.00% | 21.00% | 21.00%
Changes in computed taxes resulting from: |  |  |  |
State income tax | 6.00% | 5.00% | 5.00% | 5.00%
Amortization of excess deferred federal income taxes | (25.00%) | (9.00%) | (12.00%) | (4.00%)
Taxes attributable to non-controlling interest | 0.00% | 0.00% | 0.00% | 0.00%
Cost of removal | 5.00% | 2.00% | 2.00% | 1.00%
Other plant-related items | (4.00%) | (1.00%) | (2.00%) | 0.00%
Allowance for uncollectible accounts | 1.00% | 0.00% |  |
Renewable energy credits | 0.00% | 0.00% | 0.00% | 0.00%
Amortization of excess deferred state income taxes | 0.00% | (2.00%) | 0.00% | (1.00%)
CARES Act NOL carryback |  |  | 0.00% | 0.00%
Other | 0.00% | (1.00%) | 1.00% | (1.00%)
Effective tax rate | 4.00% | 15.00% | 15.00% | 21.00%

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