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Held-for-Sale and Dispositions Dispositions (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | $ 31,000,000 |  | $ 74,000,000 |  | $ (74,000,000) | $ 158,000,000 |  |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  |  |  |  | 105,000,000 | 11,000,000 |  |
Gain (loss) on disposal and sale of businesses interests | (1,000,000) |  | $ 1,000,000 |  | (70,000,000) | $ (43,000,000) |  |
Property, Plant and Equipment, Net | $ 36,511,000,000 |  |  |  | $ 36,511,000,000 |  |  | $ 33,166,000,000
Hoosier Wind |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Business Combination, Voting Equity Interest Acquired, Percentage | 100.00% |  |  |  | 100.00% |  |  |
Jordan (IPP1 & IPP4) |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 10.00% |  |  | 10.00% |  |
Mong Duong held-for-sale |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Debt, Long-Term and Short-Term, Combined Amount | $ 466,000,000 |  |  |  | $ 466,000,000 |  |  |
JK Projects |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | 33,000,000 |  |  |  | 33,000,000 |  |  |
Property, Plant and Equipment, Net | 14,000,000 |  |  |  | 14,000,000 |  |  |
Deferred Tax Assets, Goodwill and Intangible Assets | 19,000,000 |  |  |  | 19,000,000 |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4) |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Gain (loss) on disposal and sale of businesses interests |  |  |  | $ (10,000,000) |  |  |  |
Net proceeds received from sale of businesses |  |  |  | 45,000,000 |  |  |  |
Divestiture of Business, sales price |  |  |  | 58,000,000 |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Dominican Republic Renewables |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Gain (loss) on disposal and sale of businesses interests |  |  |  | (70,000,000) |  |  |  |
Net proceeds received from sale of businesses |  |  |  | $ 100,000,000 |  |  |  |
Divestiture of Business, sales price | 103,000,000 |  |  |  | 103,000,000 |  |  |
Retained Interest, Fair Value Disclosure | $ 37,000,000 |  |  |  | $ 37,000,000 |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Ventanas |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Divestiture of Business, sales price |  |  |  |  |  |  | $ 5,000,000 |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4) |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  | 26.00% | 26.00% |  | 26.00% |  |
Sale of Stock, Percentage of Ownership after Transaction |  |  |  |  | 10.00% |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | AES Brasil [Domain] |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  |  |  |  |  |  | 47.30%
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Dominican Republic Renewables |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold | 50.00% |  |  |  | 50.00% |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Ventanas |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  |  |  |  |  | 100.00% |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | JK Projects |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Assets Carrying Amount Disclosure Nonrecurring | $ 0.51 |  |  |  | $ 0.51 |  |  |
Disposal Group, Held-for-Sale or Disposed of by Sale, Not Discontinued Operations | Mong Duong Subsidiary [Member] |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold | 51.00% |  |  |  | 51.00% |  |  |
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff | Mong Duong held-for-sale |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Long term Concession receivable | $ 874,000,000 |  |  |  | $ 874,000,000 |  |  |
Other Subsidiaries [Member] |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | $ 0 |  | $ 1,000,000 |  | $ 4,000,000 | $ 3,000,000 |  |
Mong Duong held-for-sale |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  | $ 17,000,000 | $ 11,000,000 |  |  | $ 54,000,000 |  |
Dominican Republic Renewables |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |  |  |  |
Discontinued Operation, Equity Method Investment Retained after Disposal, Ownership Interest before Disposal | 33.00% |  |  |  |  |  |  |

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