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Debt (Recourse Debt Narrative) (Details) - USD ($) $ in Millions | 6 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Sep. 30, 2024 | Dec. 31, 2024 | Mar. 31, 2024
Debt Instrument [Line Items] |  |  |  |
Commercial Paper, Average Outstanding |  |  | $ 611 |
Proceeds from (Repayments of) Commercial Paper | $ 690 | $ 611 | 57,900 |
Bridge Loan due Dec 2023 | Bridge Loan | AES Clean Energy Development |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt face amount |  |  | $ 500 |
Recourse Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of capital stock of foreign subsidiaries securing obligations |  |  | 65.00% |
Maximum ratio of debt to cash flow |  |  | 5.75 |
900 Million Senior Notes Due 2028 | Senior Notes [Member] | Corporate Other And Other Eliminations |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt face amount |  |  | $ 900 |
Stated interest rate |  |  | 5.45% |
Commercial Paper | Corporate Other And Other Eliminations |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Commercial Paper Maximum Borrowings |  |  |  | $ 750
Revolving Credit Facility due 2027 | Senior Notes [Member] | Corporate Segment and Other Operating Segment |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt face amount |  |  | $ 1,500 |
Revolving Credit Facility due 2026 | Senior Notes [Member] | Corporate Segment and Other Operating Segment |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt face amount |  |  | 300 |
Revolving Credit Facility [Member] | Senior Notes [Member] | Corporate and Other |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt face amount |  |  | $ 1,800 |

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