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Debt (Non-recourse Debt Narrative) (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | 24 Months Ended |
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Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) agreement | Dec. 31, 2023 USD ($) | Mar. 31, 2024 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt | $ 1 | $ 9 |  |  | $ 10 | $ 11 | $ 17 | $ 63 | $ 15 |  |
Restricted cash and debt service reserves |  |  |  |  |  |  | 515 |  |  |  |
Restricted net assets |  |  |  |  |  |  | 885 |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  | 3,798 | 5,199 | 7,236 | 4,521 | $ 5,788 |  |
Restricted Cash Held for Insurance |  |  |  |  |  |  | $ 155 | 90 |  | $ 90 |
Materiality threshold for cash distribution from business to Parent |  |  |  |  |  |  | 20.00% |  |  |  |
Number Of Credit Agreements | agreement |  |  |  |  |  |  |  |  | 2 |  |
Nonrecourse [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and debt service reserves |  |  |  |  |  |  | $ 147 | 341 |  | 341 |
Finance Lease, Liability, Current |  |  |  |  |  |  | 18 | 8 |  | 8 |
Consolidated Variable Interest Entities [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and debt service reserves |  |  |  |  |  |  | 245 |  |  |  |
Consolidated Variable Interest Entities [Member] | Nonrecourse [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  |  |  | 8,200 |  |  |  |
Short-Term Debt |  |  |  |  |  |  | 650 |  |  |  |
Restricted Cash |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and debt service reserves |  |  |  |  |  |  | 79 | 158 |  | 158 |
Debt Service Reserves |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Restricted cash and debt service reserves |  |  |  |  |  |  | $ 68 | 183 |  | 183 |
AES Clean Energy Development |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Internal Rate of Return |  |  |  |  |  |  | 10 |  |  |  |
AES Clean Energy Development | Bridge Loan due Dec 2023 | Bridge Loan |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 500 |  |  |  |
Debt face amount |  |  |  |  |  |  | 500 |  |  |  |
Corporate and Other |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Materiality Threshold for Sub Default to Trigger Cross Default |  |  |  |  |  |  | 200 |  |  |  |
TEG TEP |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Materiality Threshold for Sub Default to Trigger Cross Default |  |  |  |  |  |  | 128 |  |  |  |
Nonrecourse Debt | AES Clean Energy |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | 3,219 |  |  |  |
Nonrecourse Debt | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | 1,248 |  |  |  |
Nonrecourse Debt | IPL Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | 1,450 |  |  |  |
Senior unsecured notes due 2025 [Member] | AES Indiana | Nonrecourse Debt |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | 400 |  |  |  |
Proceeds from (Repayments of) Debt | 300 |  | $ 100 |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | 400 |  |  |  |
DPL First Mortgage Bonds Total | Nonrecourse Debt | DPL Subsidiary |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | $ 200 |  |  |  |
DPL First Mortgage Bonds due 2028 | Nonrecourse Debt | DPL Subsidiary |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 5.49% |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | $ 92 |  |  |  |
DPL First Mortgage Bonds due 2033 | Nonrecourse Debt | DPL Subsidiary |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 5.70% |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | $ 108 |  |  |  |
Master Indenture Notes | Senior Notes [Member] | AES Clean Energy Development |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | 1,400 |  |  |  |
Subordinated Liabilities, Period Increase (Decrease) |  |  |  |  |  |  | 1,100 |  |  |  |
Debt face amount |  |  |  |  |  |  | 1,400 |  |  |  |
Master Indenture Notes | Senior Notes [Member] | AES Clean Energy and sPower (Co-Issuers) |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt face amount | 842 | 491 |  |  | 491 | 842 | 2,200 |  |  |  |
Debt face amount | $ 842 | $ 491 |  |  | $ 491 | $ 842 | 2,200 |  |  |  |
350 Million Credit Agreement Due 2028 | Nonrecourse Debt | AES Hispanola Holdings BV |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | (1) |  |  |  |
350 Million Credit Agreement Due 2028 | Nonrecourse Debt | AES Hispanola Holdings BV | BID |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 8.85%
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | $ 300 |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  |  |  |  |  | $ 350
Debt face amount |  |  |  |  |  |  |  |  |  |  | $ 350
350 Million Credit Agreement Due 2028 | Nonrecourse Debt | Colon | BID |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  | $ 50 |  |  |  |  |  |  |
IPL Term Loan due 2024 | IPL Subsidiary [Member] | Nonrecourse Debt |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  |  | 300 |  |  |
Bellefield Financing Agreement due 2026 | Nonrecourse Debt | AES Clean Energy Development |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Credit Facility, Commitments Used |  |  |  |  |  |  | 394 | 1,700 |  | 1,700 |
Credit facility, commitments |  |  |  |  |  |  | $ 1,700 | $ 2,400 |  | 2,400 |
Bellefield Financing Agreement due 2026 | Senior Notes [Member] | AES Clean Energy Development |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 5.70% |  |  |  |
Rexford Bridge Loan due 2024 | AES Renewable Holdings | Nonrecourse Debt |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | $ 300 |  |  |  |
Revolving Credit Facilities, Initial Commitments | AES Clean Energy |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Credit Facility, Commitments Used |  |  |  |  |  |  | 2,900 |  |  |  |
Line of Credit Facility, Increase (Decrease), Net |  |  |  |  |  |  | 638 |  |  |  |
Revolving Credit Facilities, Initial Commitments | AES Clean Energy and sPower (Co-Borrowers) |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | 3,800 |  | $ 1,200 |  |
Credit Facility, Commitments Used |  |  |  |  |  |  | 3,100 |  |  |  |
Line of Credit Facility, Increase (Decrease), Net |  |  |  |  |  |  |  |  |  | $ 2,600 |
Debt face amount |  |  |  |  |  |  | $ 3,800 |  | $ 1,200 |  |
PR Bridge Loan due 2026 | Nonrecourse Debt | AES Puerto Rico |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  |  |  |  |  | 4.00% |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 23 |  |  |  |
Debt face amount |  |  |  |  |  |  | 23 |  |  |  |
7.125% Senior notes due 2079 | Nonrecourse Debt | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  |  |  | $ 8 |  |  |  |
7.125% Senior notes due 2079 | Senior Notes [Member] | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 7.125% |  |  |  |
AES Indiana FM Bonds due 2054 | Nonrecourse Debt | AES Indiana |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 5.70%
Debt face amount |  |  |  |  |  |  |  |  |  |  | $ 650
Debt face amount |  |  |  |  |  |  |  |  |  |  | $ 650
IPALCO Notes due 2034 | Nonrecourse Debt | AES Indiana |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 5.75%
Debt face amount |  |  |  |  |  |  |  |  |  |  | $ 400
Debt face amount |  |  |  |  |  |  |  |  |  |  | $ 400
IPALCO Senior Notes due 2024 | Nonrecourse Debt | AES Indiana |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 3.70% |  |  |  |
Repayments of Debt |  |  |  |  |  |  | $ 405 |  |  |  |
Andes Senior Notes due 2029 | Nonrecourse Debt | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 6.30% |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | $ 500 |  |  |  |
6.35% Senior notes due 2079 | Senior Notes [Member] | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 6.35% |  |  |  |
5.00% Senior notes due 2025 | Senior Notes [Member] | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 5.00% |  |  |  |
Andes Junior Notes due 2055 | Nonrecourse Debt | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 8.15% |  |  |  |
Proceeds From Issuance Of Nonrecourse Debt |  |  |  |  |  |  | $ 530 |  |  |  |
PR Senior Secured Bonds due 2028 | Nonrecourse Debt | AES Puerto Rico |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt face amount |  |  |  |  |  |  | 112 |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 112 |  |  |  |
Preferred Shares in AES Guayama Holdings | Nonrecourse Debt | AES Puerto Rico |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 3.125% |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 44 |  |  |  |
Debt face amount |  |  |  |  |  |  | 44 |  |  |  |
Andes Senior Unsecured Notes due 2025 | Nonrecourse Debt | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  |  |  |  | $ 43 |  |  |  |
PR Series A Bond due 2026 | Nonrecourse Debt | AES Puerto Rico |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 6.625% |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 156 |  |  |  |
Preferred Shares Conversion Option |  |  |  |  |  |  | 0.999 |  |  |  |
Debt face amount |  |  |  |  |  |  | $ 156 |  |  |  |
AES Indiana Credit Agreement due 2027 | Nonrecourse Debt | AES Indiana |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Repayments of Debt |  |  |  |  |  |  | 350 |  |  |  |
Andes Senior Unsecured Notes due 2079 | Nonrecourse Debt | AES Andes |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  |  |  |  | $ 100 |  |  |  |
6.81% Senior Notes Due 2047 | Senior Notes [Member] | AES Clean Energy and sPower (Co-Borrowers) |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  | 6.81% |  |  |  |

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