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Debt - Non-Recourse Debt Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Mar. 31, 2025 USD ($) Rate | Mar. 31, 2024 USD ($) | Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2021 agreement
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  | $ 1,424 | $ 2,332 |  |  |
Loss on extinguishment of debt | $ (6) | $ (5) |  |  | (14) | $ (13) |  |  |
Restricted Net Assets | 2,000 |  |  |  | 2,000 |  |  |  |
Restricted Cash And Debt Service Reserves | 583 |  |  |  | 583 |  | $ 531 |  |
Restricted Cash Held for Insurance | 159 |  |  |  | 159 |  | 153 |  |
Materiality Threshold for Sub Default to Trigger Cross Default | 200 |  |  |  | 200 |  |  |  |
Number of Credit Agreements | agreement |  |  |  |  |  |  |  |  | 2
Restricted Cash [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Restricted Cash And Debt Service Reserves | 330 |  |  |  | 330 |  | 451 |  |
Debt Service Reserves [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Restricted Cash And Debt Service Reserves | 40 |  |  |  | 40 |  | 80 |  |
Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Restricted Cash And Debt Service Reserves | 370 |  |  |  | 370 |  |  |  |
Long-Term Debt | 22,855 |  |  |  | 22,855 |  | 21,681 |  |
Consolidated Variable Interest Entities [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Restricted Cash And Debt Service Reserves | 260 |  |  |  | 260 |  |  |  |
Variable Rate [Domain] | Notes Payable to Banks |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Non-recourse debt | 2,000 |  |  |  | 2,000 |  |  |  |
Notes Payable to Banks | Variable Rate [Domain] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Non-recourse debt | 11,700 |  |  |  | 11,700 |  |  |  |
Clean Energy | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit Facility, Commitments Used | 513 |  |  |  | 513 |  |  |  |
Credit facility, commitments | 2,200 |  |  |  | 2,200 |  |  |  |
AES Clean Energy Subsidiary | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  | 689 |  |  |  |
AES Clean Energy Subsidiary | Revolving Credit Facilities, Joint and Several |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit Facility, Commitments Used | 2,500 |  |  |  | 2,500 |  |  |  |
AES Clean Energy and sPower (co-issuers) | Master Indenture Notes | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-Term Debt | 3,300 |  |  |  | 3,300 |  |  |  |
AES Clean Energy Development | Revolving Credit Facilities, Joint and Several |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase (Decrease), Net |  |  |  |  | 841 |  |  |  |
Credit Facility, Commitments Used | 2,600 |  |  |  | 2,600 |  |  |  |
AES Clean Energy Development | Bellefield Financing Agreement due 2026 | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit Facility, Commitments Used | 1,400 |  |  |  | 1,400 |  |  |  |
Credit facility, commitments |  |  |  |  |  |  |  | $ 1,700 |
AES Clean Energy Development | Senior Notes [Member] | Master Indenture Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Subordinated Liabilities, Period Increase (Decrease) |  |  |  |  | 34 |  |  |  |
AES Clean Energy and sPower (co-borrowers) | Revolving Credit Facilities, Joint and Several |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | 4,000 |  |  |  | 4,000 |  |  |  |
AES Clean Energy and sPower (co-borrowers) | Master Indenture Notes | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-Term Debt | 2,500 |  |  |  | 2,500 |  |  |  |
AES Puerto Rico | Nonrecourse Debt [Member] | PR Series A Bond due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes |  |  |  | $ 156 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 6.625% |  |  |  |  |
Preferred Shares Conversion Option |  |  |  | 0.999 |  |  |  |  |
AES Puerto Rico | Nonrecourse Debt [Member] | PR Senior Secured Bonds due 2028 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes |  |  |  | $ 112 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 6.625% |  |  |  |  |
AES Puerto Rico | Nonrecourse Debt [Member] | Preferred Shares in AES Guayama Holdings |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes |  |  |  | $ 44 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 3.125% |  |  |  |  |
AES Andes | Andes Senior Notes due 2032 | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 6.25% |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 400 |  |  |  |  |  |
AES Andes | Andes Senior Notes due 2079 | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  | $ 3 |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | Rate |  |  | 6.35% |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 228 |  |  |  |  |  |
AES Puerto Rico Solar |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loan Guarantee from government |  |  |  |  |  |  |  | 861 |
Outstanding Borrowings |  |  |  |  |  |  |  | 877 |
AES Puerto Rico Solar | Puerto Rico Solar Tax Credit Transfer Bridge Loan Agreement | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | 230 |  |  |  | 230 |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 212 |  |  |  | $ 212 |  |  |  |
AES Puerto Rico Solar | Puerto Rico Solar Tax Credit Transfer Bridge Loan Agreement | Nonrecourse [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 1.25% |  |  |  | 1.25% |  |  |  |
AES Puerto Rico Solar | Puerto Rico Solar Tax Credit Transfer Bridge Loan Agreement | Nonrecourse [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.25% |  |  |  | 2.25% |  |  |  |
AES Pacifico |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  |  |  |  | $ 1,300 |
AES Pacifico | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes |  |  |  |  |  |  | $ 1,700 |  |
AES Pacifico Chile | Nonrecourse [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  | $ 407 |  |  |  |

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