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Held-for-Sale and Dispositions Dispositions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2022 | Jun. 30, 2021
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  |  |  | $ 1 | $ 58
Gain (loss) on disposal and sale of businesses interests | $ 2 | $ (64) |  | 1 | $ (59)
Itabo Opco [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  | 43.00% |  |  | 43.00%
Jordan (IPP1 & IPP4) |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 10.00% |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Itabo Opco [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  |  |  |  | $ 88
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | AES Tiete Inova Solucoes |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  |  |  |  | 20
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax | 22 | $ 20 |  | 52 | 40
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Subsidiary [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax | 16 | 15 |  | 41 | 30
Assets Carrying Amount Disclosure Nonrecurring |  |  | $ 552 |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  | 51.00% |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4) |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax | 6 | 5 |  | 11 | 10
Assets Carrying Amount Disclosure Nonrecurring | $ 203 |  |  | $ 203 |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  |  | $ 58 |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  | 26.00% |  |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Financing SPV |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  |  | 51.00% |  |
AES Tiete Inova Solucoes | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |  |  |  |  | (1)
Itabo Opco [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |  |  |  |  | 4
Itabo Opco [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |  |  |
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract] |  |  |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax |  | $ 1 |  |  | $ 5

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