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Related Party Transactions (Houston Electric and CERC) | 12 Months Ended
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Dec. 31, 2024
Related Party Transactions [Abstract] |
Related Party Transactions (Houston Electric and CERC) | Related Party Transactions (Houston Electric and CERC) Houston Electric and CERC participate in CenterPoint Energy’s money pool through which they can borrow or invest on a short-term basis. Funding needs are aggregated and external borrowing or investing is based on the net cash position. The net funding requirements of the CenterPoint Energy money pool are expected to be met with borrowings under CenterPoint Energy’s revolving credit facility or the sale of CenterPoint Energy’s commercial paper. The table below summarizes CenterPoint Energy money pool activity for the periods presented:
| December 31, 2024 |  | December 31, 2023
| Houston Electric |  | CERC |  | Houston Electric |  | CERC
| (in millions, except interest rates)
Money pool investments (1) | $ | 368 |  |  | $ | — |  |  | $ | 238 |  |  | $ | 1 |
Weighted average interest rate | 4.65 | % |  | — | % |  | 5.59 | % |  | 5.59 | %
(1)Included in Accounts and notes receivable–affiliated companies in Houston Electric’s and CERC’s respective Consolidated Balance Sheets as of December 31, 2024 and 2023, as applicable. Houston Electric and CERC affiliate-related transactions were as follows:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| Houston Electric |  | CERC |  | Houston Electric |  | CERC |  | Houston Electric |  | CERC (1)
| (in millions)
Interest income (expense), net (2) | $ | 9 |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 10 |  |  | $ | — |  |  | $ | (18) |
(1)Includes affiliate-related net interest expense of Indiana Gas and CEOH to reflect the Restructuring. (2)Interest income is included in Other, net and interest expense is included in Interest expense and other finance charges on Houston Electric’s and CERC’s respective Statements of Consolidated Income. CenterPoint Energy provides some corporate services to Houston Electric and CERC. The costs of services have been charged directly to Houston Electric and CERC using methods that management believes are reasonable. These methods include usage rates, dedicated asset assignment and proportionate corporate formulas based on operating expenses, assets, gross margin, employees and a composite of assets, gross margin and employees. Houston Electric provides certain services to CERC. These services are billed at actual cost, either directly or as an allocation and include fleet services, shop services, geographic services, surveying and right-of-way services, radio communications, data circuit management and field operations. Additionally, CERC provides certain services to Houston Electric. These services are billed at actual cost, either directly or as an allocation and include line locating and other miscellaneous services. These charges are not necessarily indicative of what would have been incurred had Houston Electric and CERC not been affiliates. The table below presents amounts charged for these services, which are included primarily in Operation and maintenance expenses on Houston Electric’s and CERC’s respective Statements of Consolidated Income, for the periods presented:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| Houston Electric |  | CERC |  | Houston Electric |  | CERC |  | Houston Electric |  | CERC
| (in millions)
Corporate service charges | $ | 173 |  |  | $ | 213 |  |  | $ | 173 |  |  | $ | 236 |  |  | $ | 167 |  |  | $ | 237 |
Net affiliate service charges (billings) | (5) |  |  | 5 |  |  | (10) |  |  | 10 |  |  | 15 |  |  | (15) |
The table below presents transactions among Houston Electric, CERC and their parent, Utility Holding, for the periods presented:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| Houston Electric |  | CERC |  | Houston Electric |  | CERC |  | Houston Electric |  | CERC
| (in millions)
Cash dividends paid to parent | $ | 339 |  |  | $ | 442 |  |  | $ | 367 |  |  | $ | 496 |  |  | $ | 316 |  |  | $ | 124 |
Cash dividend paid to parent related to the sale of the Arkansas and Oklahoma Natural Gas businesses | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 720 |
Cash contribution from parent | 844 |  |  | 290 |  |  | 885 |  |  | 500 |  |  | 1,143 |  |  | 289 |
Net assets acquired in the Restructuring (1) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,345 |
Non-cash capital contribution from parent in payment for property, plant and equipment below | — |  |  | — |  |  | — |  |  | — |  |  | 38 |  |  | 54 |
Cash paid to parent for property, plant and equipment below | — |  |  | — |  |  | — |  |  | — |  |  | 65 |  |  | 61 |
Property, plant and equipment from parent (2) | — |  |  | — |  |  | — |  |  | — |  |  | 103 |  |  | 115 |
(1)The Restructuring was a common control transaction that required the recasting of financial information to the earliest period presented. Therefore, the net asset transfer was not reflected during the year ended December 31, 2022 on CERC’s Statements of Consolidated Changes in Equity. (2)Property, plant and equipment purchased from CenterPoint Energy at its net carrying value on the date of purchase.

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-5 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477968/946-235-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477968/946-235-50-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(g)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(e)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/850/tableOfContent Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-6 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 + Details
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