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Regulatory Matters (Tables) | 6 Months Ended
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Jun. 30, 2024
Regulated Operations [Abstract] |
Schedule of Allowed Equity Return Not Recognized | The recoverable allowed equity return not yet recognized by the Registrants is as follows:
| June 30, 2024 |  | December 31, 2023
| CenterPoint Energy (1) |  | Houston Electric (2) |  | CERC (3) |  | CenterPoint Energy (1) |  | Houston Electric (2) |  | CERC (3)
| (in millions)
Unrecognized equity return | $ | 204 |  |  | $ | 61 |  |  | $ | 79 |  |  | $ | 204 |  |  | $ | 75 |  |  | $ | 69 |
(1)In addition to the amounts described in (2) and (3) below, represents CenterPoint Energy’s allowed equity return on post in-service carrying cost generally associated with investments in Indiana. (2)Represents Houston Electric’s allowed equity return on its true-up balance of stranded costs, other changes and related interest resulting from the formerly integrated electric utilities prior to Texas deregulation to be recovered in rates through 2024 and certain TEEEF costs and storm restoration costs. (3)Represents CERC’s allowed equity return on post in-service carrying cost associated with certain distribution facilities replacement expenditures in Texas and costs associated with investments in Indiana.
Schedule of Amount Allowed Equity Return Recognized in Period | The table below reflects the amount of allowed equity return recognized by each Registrant in its Condensed Statements of Consolidated Income:
| Three Months Ended June 30,
| 2024 |  | 2023
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Allowed equity return recognized | $ | 12 |  |  | $ | 11 |  |  | $ | — |  |  | $ | 10 |  |  | $ | 9 |  |  | $ | — |
| Six Months Ended June 30,
| 2024 |  | 2023
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Allowed equity return recognized | $ | 21 |  |  | $ | 19 |  |  | $ | 1 |  |  | $ | 18 |  |  | $ | 16 |  |  | $ | 1 |

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