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Held-for-Sale and Dispositions Dispositions (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Apr. 08, 2021 | Mar. 31, 2021 | Mar. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Gain (loss) on disposal and sale of businesses interests |  | $ 5 | $ 0
Equity Method Investment, Ownership Percentage |  | 10.00% |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Redondo Beach [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  |  | 24
Gain (Loss) on Disposition of Assets |  |  | 41
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax |  | $ 26 | 34
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Itabo Opco [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax |  | 6 | 11
Assets Carrying Amount Disclosure Nonrecurring |  | 201 |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  | $ 101 |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  | 43.00% |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | AES Tiete Inova Solucoes |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Assets Carrying Amount Disclosure Nonrecurring |  | $ 14 |
Proceeds from Divestiture of Businesses and Interests in Affiliates |  | 18 |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Mong Duong Subsidiary [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax |  | 15 | 15
Assets Carrying Amount Disclosure Nonrecurring |  | $ 503 |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  | 51.00% |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Estrella Del Mar I |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax |  | $ 0 | 3
Assets Carrying Amount Disclosure Nonrecurring |  | 16 |
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4) |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax |  | 5 | $ 5
Assets Carrying Amount Disclosure Nonrecurring |  | 159 |
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 |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Disposal Group Not Discontinued Operation Ownership Interest Sold |  | 51.00% |
Subsequent Event [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Itabo Opco [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Proceeds from Divestiture of Businesses and Interests in Affiliates | $ 88 |  |

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