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v3.20.2

Acquisitions (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2020 USD ($)
Penonome Wind [Member] |
Business Acquisition [Line Items] |
Asset Acquisition, Purchase Price | $ 80

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- Definition Asset Acquisition, Purchase Price + References No definition available. + Details
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Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=aes_PenonomeWindMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |