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Equity (CenterPoint Energy) - Schedule of Dividends Declared and Dividends Paid (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Common stock, dividends declared per share (in dollars per share) | $ 0.830 | $ 0.780 | $ 0.720
Common Stock dividends paid per share (in dollars per share) | 0.810 | 0.770 | 0.700
Series A Preferred Stock |  |  |
Preferred stock, dividends declared (in dollars per share) | 0 | 30.625 | 61.250
Preferred stock dividends paid per share (in dollars per share) | $ 0 | $ 61.250 | $ 61.250

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