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v3.26.1

Financing Receivables (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025 | Dec. 31, 2024
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 847 |  | $ 893 |
Financing Receivable, Allowance for Credit Loss | 40 |  | 38 |
Financing receivable | 807 |  | 855 |
Accounts Receivable, Allowance for Credit Loss, Current | 37 |  | 39 |
Other current assets, net of allowance of $2 and $2, respectively | 1,351 |  | 1,723 |
Other noncurrent assets, net of allowance of $26 and $24, respectively | 2,799 |  | 2,821 |
Accounts Receivable, after Allowance for Credit Loss, Current | 1,934 |  | 1,683 |
Accounts and Financing Receivable, Allowance for Credit Loss | 83 | $ 98 | 83 | $ 96
Chile Renovables SpA |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Adjustments to Additional Paid in Capital, Other |  | (3) |  |
Mong Duong held-for-sale |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 728 |  | 774 |
Mong Duong Subsidiary [Member] |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing receivable | 806 |  |  |
Other current assets, net of allowance of $2 and $2, respectively | 96 |  |  |
Proceeds from Sale and Collection of Receivables | 57 | $ 59 |  |
Financing Receivable, Accrued Interest, after Allowance for Credit Loss | 710 |  |  |
Chile [Member] |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 58 |  | 61 |
Financing Receivable, Allowance for Credit Loss | 0 |  | 0 |
Financing receivable | 58 |  | 61 |
Other Entity [Member] |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 7 |  | 7 |
Financing Receivable, Allowance for Credit Loss | 0 |  | 0 |
Financing receivable | 7 |  | 7 |
UNITED STATES |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing Receivable, before Allowance for Credit Loss | 54 |  | 51 |
Financing Receivable, Allowance for Credit Loss | 22 |  | 19 |
Financing receivable | 32 |  | 32 |
Mong Duong held-for-sale |  |  |  |
Financing Receivable Recorded Investment [Line Items] |  |  |  |
Financing Receivable, Allowance for Credit Loss | 18 |  | 19 |
Financing receivable | $ 710 |  | $ 755 |

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

X
- Details
Name: | srt_StatementGeographicalAxis=country_CL
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=aes_OtherEntityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementGeographicalAxis=aes_MongDuongHeldForSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |