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Revenue Recognition and Allowance for Credit Losses (Tables) | 9 Months Ended
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Sep. 30, 2024
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following tables disaggregate revenues by reportable segment and major source: CenterPoint Energy
| Three Months Ended September 30, 2024
| Electric |  | Natural Gas |  | Corporate and Other |  | Total
| (in millions)
Revenue from contracts with customers | $ | 1,245 |  |  | $ | 603 |  |  | $ | 1 |  |  | $ | 1,849 |
Other (1) | (2) |  |  | 8 |  |  | 1 |  |  | 7 |
Total revenues | $ | 1,243 |  |  | $ | 611 |  |  | $ | 2 |  |  | $ | 1,856 |
| Nine Months Ended September 30, 2024
| Electric |  | Natural Gas |  | Corporate and Other |  | Total
| (in millions)
Revenue from contracts with customers | $ | 3,504 |  |  | $ | 2,842 |  |  | $ | 3 |  |  | $ | 6,349 |
Other (1) | (5) |  |  | 34 |  |  | 3 |  |  | 32 |
Total revenues | $ | 3,499 |  |  | $ | 2,876 |  |  | $ | 6 |  |  | $ | 6,381 |
| Three Months Ended September 30, 2023
| Electric |  | Natural Gas |  | Corporate and Other |  | Total
| (in millions)
Revenue from contracts with customers | $ | 1,274 |  |  | $ | 589 |  |  | $ | 1 |  |  | $ | 1,864 |
Other (1) | (13) |  |  | 8 |  |  | 1 |  |  | (4) |
Total revenues | $ | 1,261 |  |  | $ | 597 |  |  | $ | 2 |  |  | $ | 1,860 |
| Nine Months Ended September 30, 2023
| Electric |  | Natural Gas |  | Corporate and Other |  | Total
| (in millions)
Revenue from contracts with customers | $ | 3,272 |  |  | $ | 3,100 |  |  | $ | 125 |  |  | $ | 6,497 |
Other (1) | (22) |  |  | 36 |  |  | 3 |  |  | 17 |
Total revenues | $ | 3,250 |  |  | $ | 3,136 |  |  | $ | 128 |  |  | $ | 6,514 |
(1)Primarily consists of income from ARPs and leases. Total lease income was $1 million and $2 million for the three months ended September 30, 2024 and 2023, respectively, and $5 million and $6 million for the nine months ended September 30, 2024 and 2023, respectively. Houston Electric
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
| (in millions)
Revenue from contracts with customers | $ | 1,065 |  |  | $ | 1,100 |  |  | $ | 3,024 |  |  | $ | 2,821 |
Other (1) | (7) |  |  | (17) |  |  | (21) |  |  | (37) |
Total revenues | $ | 1,058 |  |  | $ | 1,083 |  |  | $ | 3,003 |  |  | $ | 2,784 |
(1)Primarily consists of income from ARPs and leases. Lease income was not significant for the three and nine months ended September 30, 2024 and 2023. CERC
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
| (in millions)
Revenue from contracts with customers | $ | 593 |  |  | $ | 575 |  |  | $ | 2,760 |  |  | $ | 3,012 |
Other (1) | 7 |  |  | 8 |  |  | 31 |  |  | 33 |
Total revenues | $ | 600 |  |  | $ | 583 |  |  | $ | 2,791 |  |  | $ | 3,045 |
(1)Primarily consists of income from ARPs and leases. Lease income was $1 million and $1 million for the three months ended September 30, 2024 and 2023, respectively, and $3 million and $3 million for the nine months ended September 30, 2024 and 2023, respectively.
Schedule of Contract with Customer, Contract Asset, Contract Liability and Receivable | The opening and closing balances of accounts receivable, accrued unbilled revenues and contract liabilities from contracts with customers are as follows: CenterPoint Energy
| Accounts Receivable |  | Accrued Unbilled Revenues |  | Contract Liabilities
| (in millions)
Opening balance as of December 31, 2023 | $ | 652 |  |  | $ | 516 |  |  | $ | 2 |
Closing balance as of September 30, 2024 | 650 |  |  | 349 |  |  | 5 |
Increase (decrease) | $ | (2) |  |  | $ | (167) |  |  | $ | 3 |
The amount of revenue recognized during the nine months ended September 30, 2024 that was included in the opening contract liability was $2 million. The difference between the opening and closing balances of the contract liabilities primarily results from the timing difference between CenterPoint Energy’s performance and the customer’s payment. Houston Electric
| Accounts Receivable |  | Accrued Unbilled Revenues |  |  |  | Contract Liabilities
| (in millions)
Opening balance as of December 31, 2023 | $ | 275 |  |  | $ | 142 |  |  |  |  | $ | 2 |
Closing balance as of September 30, 2024 | 421 |  |  | 191 |  |  |  |  | 5 |
Increase | $ | 146 |  |  | $ | 49 |  |  |  |  | $ | 3 |
The amount of revenue recognized during the nine months ended September 30, 2024 that was included in the opening contract liability was $2 million. The difference between the opening and closing balances of the contract liabilities primarily results from the timing difference between Houston Electric’s performance and the customer’s payment. CERC
| Accounts Receivable |  | Accrued Unbilled Revenues |  |  |  |
| (in millions) |  |
Opening balance as of December 31, 2023 | $ | 330 |  |  | $ | 329 |  |  |  |  |  |  |
Closing balance as of September 30, 2024 | 183 |  |  | 122 |  |  |  |  |  |  |
Decrease | $ | (147) |  |  | $ | (207) |  |  |  |  |  |  |
CERC does not have any opening or closing contract asset or contract liability balances.

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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