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Asset Impairment Expense (Impairment of Long-Lived Assets Held and Used by Asset) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Asset impairment expense | $ (230) | $ (50) | $ (482) |  | $ (201) |  | $ (872) | $ (473) | $ (763) | $ (1,575) | $ (864)
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | $ 763 | 1,575 | 864
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  |  |  |  |  | Asset impairment expense |  |
Hawaii Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  | $ 38 |  |  | $ 0 | 0 | 38
Other |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | 26 | 25 | 19
AES Gener |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  | 213 |  |  | 0 | 0 | 213
AES Panama |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | 11 |  |  |  | 30 |  |  | 0 | 11 | 30
Ventanas 3 & 4 |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | 649 |  |  |  |  |  |  | 0 | 649 | 0
AES PR |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  | $ 475 |  |  |  |  | 0 | 475 | 0
Angamos [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | $ 155 |  |  |  | $ 564 |  |  | 0 | 155 | 564
buffalo gap III |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 91 |  |  |  |  |  |  |  | 0 | 91 | 0
buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 73 |  |  |  |  |  |  |  | 0 | 73 | 0
Buffalo Gap [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | $ 29 |  |  |  |  |  |  |  | 0 | 29 | 0
Mountain View Power Partners |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  | $ 67 |  |  |  |  |  | 0 | 67 | 0
AES Jordan |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | 76 | 0 | 0
AES Bulgaria |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | 468 | 0 | 0
TEG TEP |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | $ 193 | $ 0 | $ 0

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