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Income Taxes (Tables) | 9 Months Ended
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Sep. 30, 2023
Income Tax Disclosure [Abstract] |
Schedule of Effective Income Tax Rate Reconciliation | The Registrants reported the following effective tax rates:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
CenterPoint Energy (1) (2) | 19 | % |  | 27 | % |  | 25 | % |  | 26 | %
Houston Electric (3) | 22 | % |  | 21 | % |  | 22 | % |  | 21 | %
CERC (4) (5) | 25 | % |  | 170 | % |  | 22 | % |  | 25 | %
(1)CenterPoint Energy’s lower effective tax rate for the three months ended September 30, 2023 compared to the same period ended September 30, 2022 was primarily due to the tax impacts of the absence of non-deductible goodwill associated with the sale of the Natural Gas business in Arkansas and Oklahoma in 2022 and an increase in EDIT amortization of the net regulatory liability for EDIT. (2)CenterPoint Energy’s lower effective tax rate for the nine months ended September 30, 2023 compared to the same period ended September 30, 2022 was primarily due to the tax impacts of the absence of non-deductible goodwill associated with the sale of the Natural Gas businesses in Arkansas and Oklahoma in 2022, partially offset by the tax impacts of the sale of Energy Systems Group and an increase in state income taxes. (3)Houston Electric’s higher effective tax rate for the three and nine months ended September 30, 2023 compared to the same periods ended September 30, 2022 was primarily driven by an increase in state income taxes. (4)CERC’s lower effective tax rate for the three months ended September 30, 2023 compared to the same period ended September 30, 2022 was primarily driven by the tax impact of the absence of non-deductible goodwill associated with the sale of the Natural Gas businesses in Arkansas and Oklahoma in 2022 and an increase in the favorable impact of amortization of the net regulatory liability for EDIT. (5)CERC’s lower effective tax rate for the nine months ended September 30, 2023 compared to the same period ended September 30, 2022 was primarily driven by the tax impact of the absence of non-deductible goodwill associated with the sale of the Natural Gas businesses in Arkansas and Oklahoma in 2022 and increase in the favorable impact of amortization of the net regulatory liability for EDIT, partially offset by an increase in state income taxes.

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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://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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