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Debt - Non-Recourse Debt Narrative (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 24 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 14, 2022 USD ($) | Dec. 13, 2022 USD ($) | Dec. 31, 2021 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | $ 5,199 | $ 1,784 |  |  |  |
Loss on extinguishment of debt | $ (1) | $ 0 |  | (11) | (1) |  |  |  |
Restricted Net Assets | 1,100 |  |  | 1,100 |  |  |  |  |
Restricted Cash And Debt Service Reserves | 441 |  |  | 441 |  | $ 341 |  |  |
Restricted Cash Held for Insurance | 116 |  |  | 116 |  | 90 |  |  |
Materiality Threshold for Sub Default to Trigger Cross Default | 200 |  |  | 200 |  |  |  |  |
Clean Energy | Nonrecourse Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | 1,760 |  |  |  |  |
AES Hispanola Holdings BV | Nonrecourse Debt [Member] | 350 Million Credit Agreement Due 2028 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  | 1 |  |  |  |
AES Hispanola Holdings BV | Nonrecourse Debt [Member] | 350 Million Credit Agreement Due 2028 | BID |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  | $ 300 |  |  |  |  |  |
Issued senior notes |  | $ 350 |  |  | $ 350 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.85% |  |  | 8.85% |  |  |  |
IPL Subsidiary [Member] | Nonrecourse Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | 1,350 |  |  |  |  |
AES Clean Energy Subsidiary | Revolving Credit Facilities, Joint and Several |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase (Decrease), Net |  |  |  | 1,200 |  |  |  |  |
Credit Facility, Commitments Used | 3,500 |  |  | 3,500 |  |  |  |  |
Colon | Nonrecourse Debt [Member] | 350 Million Credit Agreement Due 2028 | BID |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  | $ 50 |  |  |  |  |  |
AES Clean Energy and sPower (co-issuers) | Senior Notes [Member] | 6.55% Senior Notes Due 2047 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes |  |  |  |  |  |  | $ 647 | $ 647 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 6.55% |
AES Clean Energy Development | Master Indenture Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Increase (Decrease), Net |  |  |  | 300 |  |  |  |  |
AES Clean Energy Development | Nonrecourse Debt [Member] | Bellefield Financing Agreement due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit Facility, Commitments Used | $ 1,600 |  |  | $ 1,600 |  |  |  |  |
Credit facility, commitments |  |  |  |  |  | 2,400 |  |  |
AES Clean Energy Development | Nonrecourse Debt [Member] | AES Clean Energy Development due 2025 [Domain] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.59% |  |  | 6.59% |  |  |  |  |
Credit Facility, Commitments Used | $ 456 |  |  | $ 456 |  |  |  |  |
AES Clean Energy Development | Senior Notes [Member] | Master Indenture Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | 552 |  |  | 552 |  |  |  |  |
AES Clean Energy and sPower (co-borrowers) | Revolving Credit Facilities, Joint and Several |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | 3,800 |  |  | 3,800 |  |  |  |  | $ 1,200
Line of Credit Facility, Increase (Decrease), Net |  |  |  |  |  | $ 2,600 |  |  |
Credit Facility, Commitments Used | 3,700 |  |  | 3,700 |  |  |  |  |
AES Clean Energy and sPower (co-borrowers) | Senior Notes [Member] | Master Indenture Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | 1,400 |  |  | 1,400 |  |  |  |  |
AES Clean Energy and sPower (co-borrowers) | Senior Notes [Member] | 6.81% Senior Notes Due 2047 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | $ 491 |  |  | $ 491 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.81% |  |  | 6.81% |  |  |  |  |
AES Puerto Rico | Nonrecourse Debt [Member] | PR Series A Bond due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | $ 156 |  |  | $ 156 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.625% |  |  | 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 |  |  | $ 112 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.625% |  |  | 6.625% |  |  |  |  |
AES Puerto Rico | Nonrecourse Debt [Member] | Preferred Shares in AES Guayama Holdings |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | $ 44 |  |  | $ 44 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.125% |  |  | 3.125% |  |  |  |  |
AES Puerto Rico | Nonrecourse Debt [Member] | PR Bridge Loan due 2026 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | $ 23 |  |  | $ 23 |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 4.00% |  |  |  |  |
AES Indiana | Nonrecourse Debt [Member] | AES Indiana FM Bonds due 2054 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | $ 650 |  |  | $ 650 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.70% |  |  | 5.70% |  |  |  |  |
AES Indiana | Nonrecourse Debt [Member] | IPALCO Notes due 2034 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Issued senior notes | $ 400 |  |  | $ 400 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.75% |  |  | 5.75% |  |  |  |  |
AES Indiana | Nonrecourse Debt [Member] | IPL Term Loan Due 2024 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments of Debt |  |  |  | $ 300 |  |  |  |  |
AES Indiana | Nonrecourse Debt [Member] | AES Indiana Credit Agreement due 2027 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Repayments of Debt |  |  |  | $ 350 |  |  |  |  |
AES Indiana | Nonrecourse Debt [Member] | IPALCO Senior Notes due 2025 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.70% |  |  | 3.70% |  |  |  |  |
Repayments of Debt |  |  |  | $ 405 |  |  |  |  |
AES Andes | Nonrecourse Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | 1,191 |  |  |  |  |
AES Andes | Nonrecourse Debt [Member] | Andes Senior Notes due 2029 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | $ 500 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.30% |  |  | 6.30% |  |  |  |  |
AES Andes | Nonrecourse Debt [Member] | Andes Senior Unsecured Notes due 2079 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Redeemed notes |  |  |  | $ 100 |  |  |  |  |
AES Andes | Nonrecourse Debt [Member] | Andes Senior Unsecured Notes due 2025 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Redeemed notes |  |  |  | 43 |  |  |  |  |
AES Andes | Nonrecourse Debt [Member] | Andes Junior Notes due 2055 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | $ 530 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.15% |  |  | 8.15% |  |  |  |  |
AES Andes | Nonrecourse Debt [Member] | 7.125% Senior notes due 2079 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  | $ (8) |  |  |  |  |
AES Andes | Senior Notes [Member] | 6.35% Senior notes due 2079 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.35% |  |  | 6.35% |  |  |  |  |
AES Andes | Senior Notes [Member] | 5.00% Senior notes due 2025 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.00% |  |  | 5.00% |  |  |  |  |
AES Andes | Senior Notes [Member] | 7.125% Senior notes due 2079 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.125% |  |  | 7.125% |  |  |  |  |

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