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Reportable Segments (Tables) | 12 Months Ended
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Dec. 31, 2023
Segment Reporting [Abstract] |
Financial Data for Business Segments | Financial data for reportable segments is as follows, including Discontinued Operations for reconciliation purposes: CenterPoint Energy
| Revenues from External Customers |  | Intersegment Revenues |  | Depreciation and Amortization |  | Interest Income (1) |  | Interest Expense |  | Income Tax Expense (Benefit) |  | Net Income (Loss)
| (in millions)
For the year ended December 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |
Electric | $ | 4,290 |  |  | $ | — |  |  | $ | 872 |  |  | $ | 19 |  |  | $ | (303) |  |  | $ | 189 |  |  | $ | 654 |
Natural Gas | 4,276 |  |  | 3 |  |  | 513 |  |  | 10 |  |  | (188) |  |  | (25) |  |  | 533 |
Corporate and Other | 130 |  |  | — |  |  | 16 |  |  | 34 |  |  | (264) |  |  | 6 |  |  | (270) |
Eliminations | — |  |  | (3) |  |  | — |  |  | (54) |  |  | 54 |  |  | — |  |  | — |
Consolidated | $ | 8,696 |  |  | $ | — |  |  | $ | 1,401 |  |  | $ | 9 |  |  | $ | (701) |  |  | $ | 170 |  |  | 917 |
For the year ended December 31, 2022: |  |  |  |  |  |  |  |  |  |  |  |  |
Electric | $ | 4,108 |  |  | $ | — |  |  | $ | 793 |  |  | $ | 4 |  |  | $ | (235) |  |  | $ | 147 |  |  | $ | 603 |
Natural Gas | 4,946 |  |  | — |  |  | 466 |  |  | 2 |  |  | (137) |  |  | 243 |  |  | 492 |
Corporate and Other | 267 |  |  | — |  |  | 29 |  |  | 59 |  |  | (214) |  |  | (30) |  |  | (38) |
Eliminations | — |  |  | — |  |  | — |  |  | (62) |  |  | 62 |  |  | — |  |  | — |
Consolidated | $ | 9,321 |  |  | $ | — |  |  | $ | 1,288 |  |  | $ | 3 |  |  | $ | (524) |  |  | $ | 360 |  |  | 1,057 |
| Revenues from External Customers |  | Intersegment Revenues |  | Depreciation and Amortization |  | Interest Income (1) |  | Interest Expense |  | Income Tax Expense (Benefit) |  | Net Income (Loss)
| (in millions)
For the year ended December 31, 2021: |  |  |  |  |  |  |  |  |  |  |  |  |
Electric | $ | 3,763 |  |  | $ | — |  |  | $ | 775 |  |  | $ | — |  |  | $ | (226) |  |  | $ | 95 |  |  | $ | 475 |
Natural Gas | 4,336 |  |  | — |  |  | 527 |  |  | 1 |  |  | (141) |  |  | 80 |  |  | 403 |
Corporate and Other | 253 |  |  | — |  |  | 14 |  |  | 118 |  |  | (278) |  |  | (65) |  |  | (210) |
Eliminations | — |  |  | — |  |  | — |  |  | (116) |  |  | 116 |  |  | — |  |  | — |
Continuing Operations | $ | 8,352 |  |  | $ | — |  |  | $ | 1,316 |  |  | $ | 3 |  |  | $ | (529) |  |  | $ | 110 |  |  | 668 |
Discontinued Operations, net |  |  |  |  |  |  |  |  |  |  |  |  | 818 |
Consolidated |  |  |  |  |  |  |  |  |  |  |  |  | $ | 1,486 |
(1) Interest income from Securitization Bonds of $4 million, less than $1 million, and $1 million for the years ended December 31, 2023, 2022 and 2021, respectively, is included in Other income, net on both CenterPoint Energy’s and Houston Electric’s respective Statements of Consolidated Income.
| Total Assets |  | Expenditures for Long-lived Assets
| December 31, |  | December 31,
| 2023 |  | 2022 |  | 2023 |  | 2022 |  | 2021
| (in millions)
Electric | $ | 21,089 |  |  | $ | 19,024 |  |  | $ | 2,660 |  |  | $ | 2,611 |  |  | $ | 2,008 |
Natural Gas | 17,429 |  |  | 18,043 |  |  | 1,697 |  |  | 1,697 |  |  | 1,178 |
Corporate and Other, net of eliminations (1) | 1,197 |  |  | 1,479 |  |  | 13 |  |  | 107 |  |  | 42 |
Continuing Operations | 39,715 |  |  | 38,546 |  |  | 4,370 |  |  | 4,415 |  |  | 3,228 |
Divestitures/Discontinued Operations | — |  |  | — |  |  | — |  |  | 3 |  |  | 171 |
Consolidated | $ | 39,715 |  |  | $ | 38,546 |  |  | $ | 4,370 |  |  | $ | 4,418 |  |  | $ | 3,399 |
(1)Total assets included pension and other postemployment-related regulatory assets of $385 million and $405 million as of December 31, 2023 and 2022, respectively.
Schedule of Revenue by Major Customers by Reporting Segments | Houston Electric’s revenues from major external customers are as follows:
|  | Year Ended December 31,
|  | 2023 |  | 2022 |  | 2021
|  | (in millions)
Affiliates of NRG |  | $ | 1,106 |  |  | $ | 1,046 |  |  | $ | 905 |
Affiliates of Vistra Energy Corp. |  | 539 |  |  | 489 |  |  | 410 |
Revenues by Products and Services | Revenues by Products and Services
|  | Year Ended December 31,
|  | 2023 |  | 2022 |  | 2021
Revenues by Products and Services: |  | CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
|  | (in millions)
Electric delivery |  | $ | 3,701 |  |  | $ | 3,677 |  |  | $ | — |  |  | $ | 3,438 |  |  | $ | 3,412 |  |  | $ | — |  |  | $ | 3,158 |  |  | $ | 3,134 |  |  | $ | — |
Retail electric sales |  | 569 |  |  | — |  |  | — |  |  | 630 |  |  | — |  |  | — |  |  | 559 |  |  | — |  |  | — |
Wholesale electric sales |  | 20 |  |  | — |  |  | — |  |  | 40 |  |  | — |  |  | — |  |  | 46 |  |  | — |  |  | — |
Retail gas sales |  | 4,078 |  |  | — |  |  | 3,951 |  |  | 4,759 |  |  | — |  |  | 4,613 |  |  | 4,157 |  |  | — |  |  | 4,021 |
Gas transportation |  | 11 |  |  | — |  |  | 11 |  |  | 12 |  |  | — |  |  | 12 |  |  | 12 |  |  | — |  |  | 12 |
Energy products and services |  | 317 |  |  | — |  |  | 187 |  |  | 442 |  |  | — |  |  | 175 |  |  | 420 |  |  | — |  |  | 167 |
Total |  | $ | 8,696 |  |  | $ | 3,677 |  |  | $ | 4,149 |  |  | $ | 9,321 |  |  | $ | 3,412 |  |  | $ | 4,800 |  |  | $ | 8,352 |  |  | $ | 3,134 |  |  | $ | 4,200 |

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-40 + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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