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Asset Impairment Expense (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | May 15, 2024
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | $ 31,000,000 |  |  | $ 74,000,000 |  | $ (74,000,000) | $ 158,000,000 |  |
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic | 671,000,000 |  |  | $ 511,000,000 |  | 612,000,000 | $ 1,219,000,000 |  |
Gain (Loss) on Sale of Assets and Asset Impairment Charges | 10,000,000 |  |  |  |  |  |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4) |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  |  | 26.00% | 26.00% |  | 26.00% |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | AES Brasil [Domain] |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  |  |  |  |  |  | 47.30% |
Assets carrying amount disclosure nonrecurring, prior to impairment |  |  |  |  |  |  |  |  | $ 1,577,000,000
Fair Value, Net Asset (Liability) |  |  |  |  |  |  |  |  | $ 1,552,000,000
Other Subsidiaries [Member] |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | 0 |  |  | $ 1,000,000 |  | 4,000,000 | $ 3,000,000 |  |
AES Clean Energy Development |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | 15,000,000 |  |  | 7,000,000 |  | 132,000,000 | 21,000,000 |  |
AES Clean Energy Development | Clean Energy |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  |  |  |  | 51,000,000 |  |  |
Mong Duong held-for-sale |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of |  |  | $ 17,000,000 | 11,000,000 |  |  | 54,000,000 |  |
Impairment Charge on Reclassified Assets | 0 | $ 243,000,000 |  |  |  |  |  |  |
Mong Duong held-for-sale | Measurement Input, Cost to Sell |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment Charge on Reclassified Assets |  | 4,000,000 |  |  |  |  |  |  |
Mong Duong held-for-sale | Long Lived Assets held and Used |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment Charge on Reclassified Assets |  | $ 239,000,000 |  |  |  |  |  |  |
Mong Duong held-for-sale | Disposal Group, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment Charge on Reclassified Assets |  |  |  |  |  | 226,000,000 |  |  |
AES Brasil [Domain] |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | 0 |  |  | 55,000,000 | $ 25,000,000 | 0 | 80,000,000 |  |
AES Andes |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets to be Disposed of | $ 16,000,000 |  |  | $ 0 |  | $ 16,000,000 | $ 0 |  |

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