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v3.21.1

Subsequent Events (Details) $ in Millions | Apr. 30, 2021 USD ($)
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Subsequent Event [Member] | Cubico Wind Complex |
Subsequent Event [Line Items] |
Asset Acquisition, Price of Acquisition, Expected | $ 109

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- Definition Purchase price of expected asset acquisition prior to consideration being transferred. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 50 -Section 15 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6911878&loc=d3e8732-128492 + Details
Name: | us-gaap_AssetAcquisitionPriceOfAcquisitionExpected
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_AssetAcquisitionAxis=aes_CubicoWindComplexMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |