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Derivative Instruments and Hedging Activities (Outstanding Derivative Notionals and Terms by Type) (Details) - USD ($) | Dec. 31, 2024 | Dec. 31, 2023
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Derivative [Line Items] |  |
Derivative Liability, Noncurrent | $ 118,000,000 | $ 294,000,000
Derivative Asset, Noncurrent | 319,000,000 | 170,000,000
Derivative, notional amount | 3,700,000,000 |
AES Brasil [Domain] |  |
Derivative [Line Items] |  |
Disposal Group, Including Discontinued Operation, Liabilities |  | $ 386,000,000
Libor and Euribor [Member] | Interest Rate Contract |  |
Derivative [Line Items] |  |
Derivative, notional amount | 9,566,000,000 |
Chilean Peso CLP [Member] | Foreign Exchange Contract [Member] |  |
Derivative [Line Items] |  |
Derivative, notional amount | 133,000,000 |
Colombian Peso COP [Member] | Foreign Exchange Contract [Member] |  |
Derivative [Line Items] |  |
Derivative, notional amount | 68,000,000 |
Mexico, Pesos | Foreign Exchange Contract [Member] |  |
Derivative [Line Items] |  |
Derivative, notional amount | 39,000,000 |
Natural Gas and Natural Gas Liquids (NGL) [Member] |  |
Derivative [Line Items] |  |
Commodity Contract Asset, Current | 303,000,000 |
Energy [Domain] |  |
Derivative [Line Items] |  |
Commodity Contract Asset, Current | 62,000,000 |
Coal [Member] |  |
Derivative [Line Items] |  |
Commodity Contract Asset, Current | $ 7,000,000 |

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