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Leases (Tables) | 12 Months Ended
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Dec. 31, 2024
Leases [Abstract] |
Schedule of Lease Cost | The components of lease cost, included in Operation and maintenance expense on the Registrants’ respective Statements of Consolidated Income, are as follows for the periods presented:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Operating lease cost | $ | 6 |  |  | $ | 3 |  |  | $ | 2 |  |  | $ | 6 |  |  | $ | 3 |  |  | $ | 2 |  |  | $ | 6 |  |  | $ | 1 |  |  | $ | 2 |
Short-term lease cost | 12 |  |  | 11 |  |  | — |  |  | 31 |  |  | 30 |  |  | — |  |  | 167 |  |  | 166 |  |  | 1 |
Total lease cost (1) | $ | 18 |  |  | $ | 14 |  |  | $ | 2 |  |  | $ | 37 |  |  | $ | 33 |  |  | $ | 2 |  |  | $ | 173 |  |  | $ | 167 |  |  | $ | 3 |
(1) CenterPoint Energy and Houston Electric defer finance lease costs for TEEEF to Regulatory assets for recovery rather than to Depreciation and Amortization in the Statements of Consolidated Income.
Schedule of Lease Income | The components of lease income were as follows for the periods presented:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Operating lease income | $ | 7 |  |  | $ | — |  |  | $ | 5 |  |  | $ | 6 |  |  | $ | 1 |  |  | $ | 4 |  |  | $ | 5 |  |  | $ | 1 |  |  | $ | 3 |
Variable lease income | 1 |  |  | — |  |  | — |  |  | 2 |  |  | — |  |  | — |  |  | 2 |  |  | — |  |  | — |
Total lease income | $ | 8 |  |  | $ | — |  |  | $ | 5 |  |  | $ | 8 |  |  | $ | 1 |  |  | $ | 4 |  |  | $ | 7 |  |  | $ | 1 |  |  | $ | 3 |
Schedule of Supplemental Balance Sheet and Weighted-Average | Supplemental balance sheet information related to leases was as follows for the periods presented:
| December 31, 2024 |  | December 31, 2023 |  |
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  |  |  |  |  |
| (in millions)
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating ROU assets (1) | $ | 27 |  |  | $ | 5 |  |  | $ | 15 |  |  | $ | 13 |  |  | $ | 6 |  |  | $ | 4 |  |  |  |  |  |  |
Finance ROU assets (2) | 430 |  |  | 430 |  |  | — |  |  | 526 |  |  | 526 |  |  | — |  |  |  |  |  |  |
Total leased assets | $ | 457 |  |  | $ | 435 |  |  | $ | 15 |  |  | $ | 539 |  |  | $ | 532 |  |  | $ | 4 |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current operating lease liability (3) | $ | 3 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 1 |  |  | $ | 1 |  |  |  |  |  |  |
Non-current operating lease liability (4) | 25 |  |  | 3 |  |  | 14 |  |  | 10 |  |  | 5 |  |  | 3 |  |  |  |  |  |  |
Total leased liabilities (5) | $ | 28 |  |  | $ | 4 |  |  | $ | 15 |  |  | $ | 13 |  |  | $ | 6 |  |  | $ | 4 |  |  |  |  |  |  |
(1)Included in Other assets in the Registrants’ respective Consolidated Balance Sheets, net of accumulated amortization. (2)Included in Property, Plant and Equipment in the Registrants’ respective Consolidated Balance Sheets, net of accumulated amortization. (3)Included in Current other liabilities in the Registrants’ respective Consolidated Balance Sheets. (4)Included in Other non-current liabilities in the Registrants’ respective Consolidated Balance Sheets. (5)Finance lease liabilities were not material as of December 31, 2024 or 2023. As of December 31, 2024 and 2023, the weighted-average remaining lease term and weighted-average discount rate for the Registrants’ finance and operating leases were as follows:
| December 31, 2024 |  | December 31, 2023 |  |
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  |  |  |  |  |
Weighted-average remaining lease term (in years) - operating leases | 17.7 |  | 2.9 |  | 20.6 |  | 4.7 |  | 3.9 |  | 3.1 |  |  |  |  |  |
Weighted-average discount rate - operating leases | 4.92 | % |  | 4.11 | % |  | 5.03 | % |  | 4.13 | % |  | 4.09 | % |  | 3.60 | % |  |  |  |  |  |
Weighted-average remaining lease term (in years) - finance leases | 4.5 |  | 4.5 |  | — |  |  | 5.5 |  | 5.5 |  | — |  |  |  |  |  |  |
Weighted-average discount rate - finance leases | 3.60 | % |  | 3.60 | % |  | — |  |  | 3.60 | % |  | 3.60 | % |  | — |  |  |  |  |  |  |
Schedule of Maturities of Operating Lease Liabilities | As of December 31, 2024, finance lease liabilities were not significant to the Registrants. As of December 31, 2024, maturities of operating lease liabilities were as follows:
| CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
2025 | $ | 4 |  |  | $ | 2 |  |  | $ | 2 |
2026 | 4 |  |  | 1 |  |  | 2 |
2027 | 3 |  |  | 1 |  |  | 1 |
2028 | 2 |  |  | — |  |  | 1 |
2029 | 2 |  |  | — |  |  | 1 |
Thereafter | 30 |  |  | — |  |  | 19 |
Total lease payments | 45 |  |  | 4 |  |  | 26 |
Less: Interest | 17 |  |  | — |  |  | 11 |
Present value of lease liabilities | $ | 28 |  |  | $ | 4 |  |  | $ | 15 |
Schedule of Maturities of Undiscounted Operating Lease Payments | As of December 31, 2024, maturities of undiscounted operating lease payments to be received were as follows:
| CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
2025 | $ | 9 |  |  | $ | 1 |  |  | $ | 6 |
2026 | 9 |  |  | — |  |  | 6 |
2027 | 8 |  |  | — |  |  | 7 |
2028 | 4 |  |  | — |  |  | 2 |
2029 | 1 |  |  | — |  |  | — |
Thereafter | 1 |  |  | — |  |  | — |
Total lease payments to be received | $ | 32 |  |  | $ | 1 |  |  | $ | 21 |
Schedule of Other Information Related To Leases | Other information related to leases is as follows for the periods presented:
| Year Ended December 31,
| 2024 |  | 2023 |  | 2022
| CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC |  | CenterPoint Energy |  | Houston Electric |  | CERC
| (in millions)
Operating cash flows from operating leases included in the measurement of lease liabilities | $ | 5 |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 5 |  |  | $ | 2 |  |  | $ | 2 |  |  | $ | 6 |  |  | $ | 1 |  |  | $ | 2 |
Financing cash flows from finance leases included in the measurement of lease liabilities | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 485 |  |  | 485 |  |  | — |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Tabular disclosure of maturity of undiscounted cash flows to be received by lessor on annual basis for operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-12 + Details
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