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Reportable Segments (Tables) | 9 Months Ended
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Sep. 30, 2024
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information, by Segment | The following table provides financial data for CenterPoint Energy’s reportable segments. Each of Houston Electric and CERC consist of a single reportable segment; therefore, a tabular reportable segment presentation has not been included for Houston Electric or CERC. CenterPoint Energy
| Three Months Ended September 30, |  |  |  |  |  |  |
| 2024 |  | 2023 |  |  |  |  |  |  |
| Revenues from External Customers |  |  |  | Net Income (Loss) |  | Revenues from External Customers |  |  |  | Net Income (Loss) |  |  |  |  |  |  |
| (in millions) |  |  |  |  |  |  |
Electric | $ | 1,243 |  |  |  |  | $ | 226 |  |  | $ | 1,261 |  |  |  |  | $ | 290 |  |  |  |  |  |  |  |
Natural Gas | 611 |  |  |  |  | 30 |  |  | 597 |  |  |  |  | 27 |  |  |  |  |  |  |  |
Corporate and Other | 2 |  |  |  |  | (63) |  |  | 2 |  |  |  |  | (35) |  |  |  |  |  |  |  |
Consolidated | $ | 1,856 |  |  |  |  | $ | 193 |  |  | $ | 1,860 |  |  |  |  | $ | 282 |  |  |  |  |  |  |  |
| Nine Months Ended September 30, |  |  |  |  |  |  |
| 2024 |  | 2023 |  |  |  |  |  |  |
| Revenues from External Customers |  |  |  | Net Income (Loss) |  | Revenues from External Customers |  |  |  | Net Income (Loss) |  |  |  |  |  |  |
| (in millions) |  |  |  |  |  |  |
Electric | $ | 3,499 |  |  |  |  | $ | 562 |  |  | $ | 3,250 |  |  |  |  | $ | 593 |  |  |  |  |  |  |  |
Natural Gas | 2,876 |  |  |  |  | 360 |  |  | 3,136 |  |  |  |  | 296 |  |  |  |  |  |  |  |
Corporate and Other | 6 |  |  |  |  | (151) |  |  | 128 |  |  |  |  | (164) |  |  |  |  |  |  |  |
Consolidated | $ | 6,381 |  |  |  |  | $ | 771 |  |  | $ | 6,514 |  |  |  |  | $ | 725 |  |  |  |  |  |  |  |
| Total Assets
| September 30, 2024 |  | December 31, 2023
| (in millions)
Electric | $ | 23,458 |  |  | $ | 21,089 |
Natural Gas | 17,966 |  |  | 17,429 |
Corporate and Other, net of eliminations (1) | 1,469 |  |  | 1,197 |
Consolidated | $ | 42,893 |  |  | $ | 39,715 |
(1)Total assets included pension and other postemployment-related regulatory assets of $368 million and $385 million as of September 30, 2024 and December 31, 2023, respectively.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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