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Asset Impairment Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | $ 29 | $ 849 | $ 1,374 | $ 855
Other Asset Impairment Charges | 29 | 849 | 1,374 | 855
AES Hawaii |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 0 | 38 | 0 | 38
AES Hawaii | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges |  |  |  | 38
AES Panama |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 11 | 30 | 11 | 30
AES Panama | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges |  |  | 11 | 30
Other Subsidiaries [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 18 | 4 | 17 | 10
AES Puerto Rico |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use | 0 | 0 | 475 | 0
Assets Carrying Amount Disclosure Nonrecurring | 73 |  | 73 |
AES Puerto Rico | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges |  |  | 475 |
Mountain View Power Partners |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  | 67 |
Mountain View Power Partners | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges | 0 | 0 | 67 | 0
Angamos [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  | 155 | 564
Angamos [Member] | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges | 0 | 564 | 155 | 564
Ventanas [Domain] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  |  | 213
Ventanas [Domain] | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges | 0 | 213 | 0 | 213
Ventanas 3 & 4 |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Impairment of Long-Lived Assets Held-for-use |  |  | 649 |
Ventanas 3 & 4 | Long Lived Assets Held And Used [Member] |  |  |  |
Asset Impairment Expense [Line Items] |  |  |  |
Other Asset Impairment Charges | $ 0 | $ 0 | $ 649 | $ 0

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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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