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Commitments and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2024
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Long-term Purchase Commitment | As of June 30, 2024, other than discussed below, minimum purchase obligations were approximately:
| CenterPoint Energy |  | CERC
| Natural Gas Supply |  | Electric Supply (1) |  | Other (2) |  | Natural Gas Supply
| (in millions)
Remaining six months of 2024 | $ | 314 |  |  | $ | 84 |  |  | $ | 60 |  |  | $ | 311 |
2025 | 613 |  |  | 459 |  |  | 53 |  |  | 609 |
2026 | 551 |  |  | 111 |  |  | 55 |  |  | 547 |
2027 | 474 |  |  | 105 |  |  | 10 |  |  | 471 |
2028 | 431 |  |  | 68 |  |  | 7 |  |  | 427 |
2029 | 417 |  |  | 66 |  |  | 1 |  |  | 414 |
2030 and beyond | 1,446 |  |  | 701 |  |  | 242 |  |  | 1,424 |
(1)CenterPoint Energy’s undiscounted minimum payment obligations related to PPAs with commitments ranging from 15 years to 25 years and its purchase commitments under its BTA in Posey County, Indiana at the original contracted amount. (2)The undiscounted payment obligations relate primarily to technology hardware and software agreements.
Schedule of Environmental Loss Contingencies by Site | Total costs that may be incurred in connection with addressing these sites cannot be determined at this time. The estimated accrued costs are limited to CenterPoint Energy’s and CERC’s share of the remediation efforts and are therefore net of exposures of other PRPs. The estimated range of possible remediation costs for the sites for which CenterPoint Energy and CERC believe they may have responsibility was based on remediation continuing for the minimum time frame given in the table below:
| June 30, 2024
| CenterPoint Energy |  | CERC
| (in millions, except years)
Amount accrued for remediation | $ | 13 |  |  | $ | 11 |
Minimum estimated remediation costs | 8 |  |  | 7 |
Maximum estimated remediation costs | 47 |  |  | 40 |
Minimum years of remediation | 5 |  | 5
Maximum years of remediation | 50 |  | 50

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- Definition Tabular disclosure of key provisions of an arrangement under which the entity has agreed to purchase goods or services over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount. + References No definition available. + Details
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- Definition Tabular disclosure of environmental loss contingencies by individual site. Does not include loss contingencies that are not environmental in nature. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480102/450-20-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480102/450-20-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481931/410-30-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481931/410-30-50-10 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481931/410-30-50-10 + Details
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