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Subsequent Events (CenterPoint Energy) (Tables) | 3 Months Ended
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Mar. 31, 2023
Subsequent Events [Abstract] |
Schedule of Dividends Declared | Dividends Declared and Paid (CenterPoint Energy)
|  |  |  |  |  | Dividends Declared Per Share |  |  |  |  | Dividends Paid Per Share
|  |  |  | Three Months Ended March 31, |  |  |  | Three Months Ended March 31,
|  |  |  |  |  | 2023 |  | 2022 |  |  |  |  |  | 2023 |  | 2022
Common Stock |  |  |  |  |  | $ | — |  |  | $ | — |  |  |  |  |  |  | $ | 0.190 |  |  | $ | 0.170 |
Series A Preferred Stock |  |  |  |  |  | — |  |  | — |  |  |  |  |  |  | 30.625 |  |  | 30.625 |
Equity Instrument |  | Declaration Date |  | Record Date |  | Payment Date |  | Per Share
Common Stock |  | April 20, 2023 |  | May 18, 2023 |  | June 8, 2023 |  | $ | 0.1900 |

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