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Revenue (Notes) | 6 Months Ended
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Jun. 30, 2026
Revenue from Contracts with Customers [Abstract] |
Revenue from Contract with Customer [Text Block] | REVENUE The following table presents our revenue from contracts with customers and other revenue for the periods indicated (in millions):
| Three Months Ended June 30, 2026
| Renewables SBU |  | Utilities SBU |  | Energy Infrastructure SBU |  | New Energy Technologies SBU |  | Corporate, Other and Eliminations |  | Total
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 849 |  |  | $ | 23 |  |  | $ | 1,435 |  |  | $ | — |  |  | $ | (31) |  |  | $ | 2,276 |
Other non-regulated revenue (1) | 90 |  |  | — |  |  | 61 |  |  | — |  |  | — |  |  | 151 |
Total non-regulated revenue | 939 |  |  | 23 |  |  | 1,496 |  |  | — |  |  | (31) |  |  | 2,427 |
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | — |  |  | 987 |  |  | — |  |  | — |  |  | — |  |  | 987 |
Other regulated revenue | — |  |  | 8 |  |  | — |  |  | — |  |  | — |  |  | 8 |
Total regulated revenue | — |  |  | 995 |  |  | — |  |  | — |  |  | — |  |  | 995 |
Total revenue | $ | 939 |  |  | $ | 1,018 |  |  | $ | 1,496 |  |  | $ | — |  |  | $ | (31) |  |  | $ | 3,422 |
| Three Months Ended June 30, 2025
| Renewables SBU |  | Utilities SBU |  | Energy Infrastructure SBU |  | New Energy Technologies SBU |  | Corporate, Other and Eliminations |  | Total
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 638 |  |  | $ | 20 |  |  | $ | 1,236 |  |  | $ | — |  |  | $ | (49) |  |  | $ | 1,845 |
Other non-regulated revenue (1) | 6 |  |  | 1 |  |  | 70 |  |  | — |  |  | — |  |  | 77 |
Total non-regulated revenue | 644 |  |  | 21 |  |  | 1,306 |  |  | — |  |  | (49) |  |  | 1,922 |
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | — |  |  | 927 |  |  | — |  |  | — |  |  | — |  |  | 927 |
Other regulated revenue | — |  |  | 6 |  |  | — |  |  | — |  |  | — |  |  | 6 |
Total regulated revenue | — |  |  | 933 |  |  | — |  |  | — |  |  | — |  |  | 933 |
Total revenue | $ | 644 |  |  | $ | 954 |  |  | $ | 1,306 |  |  | $ | — |  |  | $ | (49) |  |  | $ | 2,855 |
| Six Months Ended June 30, 2026
| Renewables SBU |  | Utilities SBU |  | Energy Infrastructure SBU |  | New Energy Technologies SBU |  | Corporate, Other and Eliminations |  | Total
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 1,603 |  |  | $ | 44 |  |  | $ | 2,592 |  |  | $ | — |  |  | $ | (63) |  |  | $ | 4,176 |
Other non-regulated revenue (1) | 156 |  |  | 1 |  |  | 160 |  |  | — |  |  | — |  |  | 317 |
Total non-regulated revenue | 1,759 |  |  | 45 |  |  | 2,752 |  |  | — |  |  | (63) |  |  | 4,493 |
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | — |  |  | 2,092 |  |  | — |  |  | — |  |  | — |  |  | 2,092 |
Other regulated revenue | — |  |  | 17 |  |  | — |  |  | — |  |  | — |  |  | 17 |
Total regulated revenue | — |  |  | 2,109 |  |  | — |  |  | — |  |  | — |  |  | 2,109 |
Total revenue | $ | 1,759 |  |  | $ | 2,154 |  |  | $ | 2,752 |  |  | $ | — |  |  | $ | (63) |  |  | $ | 6,602 |
| Six Months Ended June 30, 2025
| Renewables SBU |  | Utilities SBU |  | Energy Infrastructure SBU |  | New Energy Technologies SBU |  | Corporate, Other and Eliminations |  | Total
Non-Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | $ | 1,258 |  |  | $ | 43 |  |  | $ | 2,458 |  |  | $ | — |  |  | $ | (118) |  |  | $ | 3,641 |
Other non-regulated revenue (1) | 52 |  |  | 2 |  |  | 168 |  |  | — |  |  | — |  |  | 222 |
Total non-regulated revenue | 1,310 |  |  | 45 |  |  | 2,626 |  |  | — |  |  | (118) |  |  | 3,863 |
Regulated Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from contracts with customers | — |  |  | 1,903 |  |  | — |  |  | — |  |  | — |  |  | 1,903 |
Other regulated revenue | — |  |  | 15 |  |  | — |  |  | — |  |  | — |  |  | 15 |
Total regulated revenue | — |  |  | 1,918 |  |  | — |  |  | — |  |  | — |  |  | 1,918 |
Total revenue | $ | 1,310 |  |  | $ | 1,963 |  |  | $ | 2,626 |  |  | $ | — |  |  | $ | (118) |  |  | $ | 5,781 |
_______________________________ (1) Other non-regulated revenue primarily includes lease and derivative revenue not accounted for under ASC 606. Contract Balances — The timing of revenue recognition, billings, and cash collections results in accounts receivable and contract liabilities. The contract liabilities from contracts with customers were $246 million and $374 million as of June 30, 2026 and December 31, 2025, respectively. During the six months ended June 30, 2026 and 2025, we recognized revenue of $162 million and $15 million, respectively, that was included in the corresponding contract liability balance at the beginning of the periods. A significant financing arrangement exists for our Mong Duong plant in Vietnam. The plant was constructed under a BOT contract and sold to the Vietnamese government, while we remain the operator for the duration of the 25-year PPA. The performance obligation to construct the facility was substantially completed in 2015. Contract consideration related to the construction, but not yet collected through the 25-year PPA, was reflected on the Condensed Consolidated Balance Sheet. As of June 30, 2026 and December 31, 2025, the loan receivable balance was $806 million and $862 million, respectively. Of these amounts, $96 million and $107 million were classified in Other current assets, and $710 million and $755 million in Loan receivable on the Condensed Consolidated Balance Sheets, respectively. Remaining Performance Obligations — The transaction price allocated to remaining performance obligations represents future revenue for unsatisfied (or partially unsatisfied) performance obligations at the end of the reporting period. As of June 30, 2026, the aggregate amount of transaction price allocated to remaining performance obligations was $258 million, primarily consisting of fixed consideration in development services contracts in the U.S., of which $120 million has been collected. We expect to recognize revenue of approximately $127 million in the remainder of 2026, $127 million in 2027, and the remainder thereafter

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-15 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-12 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-13 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org/606/tableOfContent + Details
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