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Reportable Segments | 9 Months Ended
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Sep. 30, 2023
Segment Reporting [Abstract] |
Reportable Segments | Reportable Segments The Registrants’ determination of reportable segments considers the strategic operating units under which its CODM manages sales, allocates resources and assesses performance of various products and services to wholesale or retail customers in differing regulatory environments. Each Registrant’s CODM views net income as the measure of profit or loss for the reportable segments. As of September 30, 2023, reportable segments by Registrant were as follows: CenterPoint Energy •CenterPoint Energy’s Electric reportable segment consisted of electric transmission and distribution services in the Texas gulf coast area in the ERCOT region and electric transmission and distribution services primarily to southwestern Indiana and includes power generation and wholesale power operations in the MISO region. •CenterPoint Energy’s Natural Gas reportable segment consists of (i) intrastate natural gas sales to, and natural gas transportation and distribution for residential, commercial, industrial and institutional customers in Indiana, Louisiana, Minnesota, Mississippi, Ohio and Texas; and (ii) permanent pipeline connections through interconnects with various interstate and intrastate pipeline companies through CEIP. •CenterPoint Energy’s Corporate and Other category consists of energy performance contracting and sustainable infrastructure services through Energy Systems Group through June 30, 2023, the date of the sale of Energy Systems Group, and corporate operations which support all of the business operations of CenterPoint Energy. Houston Electric •Houston Electric’s single reportable segment consisted of electric transmission services to transmission service customers in the ERCOT region and distribution services to REPs serving the Texas gulf coast area. CERC •CERC’s single reportable segment following the Restructuring consisted of (i) intrastate natural gas sales to, and natural gas transportation and distribution for, residential, commercial, industrial and institutional customers in Indiana, Louisiana, Minnesota, Mississippi, Ohio and Texas; and (ii) permanent pipeline connections through interconnects with various interstate and intrastate pipeline companies through CEIP. Financial data for reportable segments is as follows: CenterPoint Energy
| Three Months Ended September 30, |  |  |  |  |  |  |
| 2023 |  | 2022 |  |  |  |  |  |  |
| Revenues from External Customers |  |  |  | Net Income (Loss) |  | Revenues from External Customers |  |  |  | Net Income (Loss) |  |  |  |  |  |  |
| (in millions) |  |  |  |  |  |  |
Electric | $ | 1,261 |  | (1) |  |  | $ | 290 |  |  | $ | 1,146 |  | (1) |  |  | $ | 234 |  |  |  |  |  |  |  |
Natural Gas | 597 |  |  |  |  | 27 |  |  | 692 |  |  |  |  | (10) |  |  |  |  |  |  |  |
Corporate and Other | 2 |  |  |  |  | (35) |  |  | 65 |  |  |  |  | (22) |  |  |  |  |  |  |  |
Consolidated | $ | 1,860 |  |  |  |  | $ | 282 |  |  | $ | 1,903 |  |  |  |  | $ | 202 |  |  |  |  |  |  |  |
| Nine Months Ended September 30, |  |  |  |  |  |  |
| 2023 |  | 2022 |  |  |  |  |  |  |
| Revenues from External Customers |  |  |  | Net Income (Loss) |  | Revenues from External Customers |  |  |  | Net Income |  |  |  |  |  |  |
| (in millions) |  |  |  |  |  |  |
Electric | $ | 3,250 |  | (1) |  |  | $ | 593 |  |  | $ | 3,092 |  | (1) |  |  | $ | 489 |  |  |  |  |  |  |  |
Natural Gas | 3,136 |  |  |  |  | 296 |  |  | 3,334 |  |  |  |  | 416 |  |  |  |  |  |  |  |
Corporate and Other | 128 |  |  |  |  | (164) |  |  | 184 |  |  |  |  | 18 |  |  |  |  |  |  |  |
Consolidated | $ | 6,514 |  |  |  |  | $ | 725 |  |  | $ | 6,610 |  |  |  |  | $ | 923 |  |  |  |  |  |  |  |
(1)Houston Electric revenues from major external customers are as follows (CenterPoint Energy and Houston Electric):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2023 |  | 2022 |  | 2023 |  | 2022
|  | (in millions)
Affiliates of NRG |  | $ | 370 |  |  | $ | 327 |  |  | $ | 826 |  |  | $ | 797 |
Affiliates of Vistra Energy Corp. |  | 177 |  |  | 153 |  |  | 403 |  |  | 372 |
| Total Assets
| September 30, 2023 |  | December 31, 2022
| (in millions)
Electric | $ | 21,130 |  |  | $ | 19,024 |
Natural Gas | 16,802 |  |  | 18,043 |
Corporate and Other, net of eliminations (1) | 1,069 |  |  | 1,479 |
Consolidated | $ | 39,001 |  |  | $ | 38,546 |
(1)Total assets included pension and other postemployment-related regulatory assets of $379 million and $405 million as of September 30, 2023 and December 31, 2022, respectively. Houston Electric Houston Electric consists of a single reportable segment; therefore, a tabular reportable segment presentation has not been included. CERC CERC consists of a single reportable segment; therefore, a tabular reportable segment presentation has not been included.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-40 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//280/tableOfContent Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 26 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-26 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-34 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 + Details
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