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Asset Impairment Expense (Narrative) (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] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | $ 763 | $ 1,575 | $ 864
Other Asset Impairment Charges | $ 230 | $ 50 | $ 482 |  | $ 201 |  | $ 872 | $ 473 | 763 | 1,575 | 864
Long-Lived Assets | 23,395 |  |  |  | 20,183 |  |  |  | 23,395 | 20,183 | 23,103
Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount | 1,195 |  |  |  |  |  |  |  | 1,195 |  |
Hawaii Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  | $ 38 |  |  | 0 | 0 | 38
Angamos [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | 155 |  |  |  | 564 |  |  | 0 | 155 | 564
AES Gener |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  | 213 |  |  | 0 | 0 | 213
Buffalo Gap [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 29 |  |  |  |  |  |  |  | 0 | 29 | 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 III |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 91 |  |  |  |  |  |  |  | 0 | 91 | 0
Ventanas 3 & 4 |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | 649 |  |  |  |  |  |  | 0 | 649 | 0
Mountain View Power Partners |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  | 67 |  |  |  |  |  | 0 | 67 | 0
AES PR |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  | $ 475 |  |  |  |  | 0 | 475 | 0
Assets carrying amount |  |  |  | $ 73 |  |  |  |  |  |  |
AES Panama |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  | 11 |  |  |  | 30 |  |  | 0 | 11 | 30
AES Bulgaria |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  |  |  |  |  |  | 468 | 0 | $ 0
Long Lived Assets Held For Sale [Member] | AES Panama |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  | 51 |  |
Assets carrying amount |  | 216 |  |  |  |  |  |  |  |  |
Long Lived Assets Held For Sale [Member] | AES Panama | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  | 0 |  |  |  |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Hawaii Subsidiary [Member] | Level 3 |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount | 452 |  |  |  |  |  |  |  | 452 |  |
Long Lived Assets Held And Used [Member] | Kilroot and Ballylumford [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 11 |
Long Lived Assets Held And Used [Member] | Angamos [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 475 |
Long Lived Assets Held And Used [Member] | Angamos [Member] | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount | 311 | 86 |  |  | 73 | 306 |  |  | 311 | 73 |
Long Lived Assets Held And Used [Member] | Buffalo Gap [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 29 |
Long Lived Assets Held And Used [Member] | Buffalo Gap [Member] | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount | $ 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Long Lived Assets Held And Used [Member] | buffalo gap II [Member] [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 73 |
Long Lived Assets Held And Used [Member] | buffalo gap II [Member] [Member] | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  |  |  |  | 0 |  |  |  |  | 0 |
Long Lived Assets Held And Used [Member] | buffalo gap III |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  |  | 91 |
Long Lived Assets Held And Used [Member] | buffalo gap III | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  |  |  |  | 0 |  |  |  |  | 0 |
Long Lived Assets Held And Used [Member] | Ventanas 3 & 4 | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  | $ 12 |  |  |  |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Mountain View Power Partners |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  | 193 | 67 |
Long Lived Assets Held And Used [Member] | Mountain View Power Partners | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  |  | 504 |  |  |  |  |  |  |  |
Long Lived Assets Held And Used [Member] | Mountain View Power Partners | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  |  | $ 311 |  | $ 11 |  |  |  |  | $ 11 |
Long Lived Assets Held And Used [Member] | AES PR |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other Asset Impairment Charges |  |  |  |  |  |  |  |  | $ 468 |  |
Long Lived Assets Held And Used [Member] | AES Bulgaria | Level 3 | Fair Value |  |  |  |  |  |  |  |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |  |  |  |  |  |  |  |
Assets carrying amount |  |  |  |  |  | $ 452 |  |  |  |  |

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