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Equity (CenterPoint Energy) - Schedule of Income Allocated to Series A Preferred Shareholders (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Series A Preferred Stock
Series A Preferred Stock	$ 0	$ 50	$ 49

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- Definition

The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

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- Details

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Namespace Prefix:
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Balance Type:
Period Type: