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Financial Statement Presentation New Accounting Pronouncement Adopted (Details)
$ in Millions
 1 Months Ended 9 Months Ended
Oct. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
agreement
Sep. 30, 2023
USD ($)
Rate
Dec. 31, 2023
USD ($)
Rate
Jun. 30, 2023
Dec. 31, 2022
USD ($)
Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Cash and Cash Equivalents, at Carrying Value   $ 1,919   $ 1,426      
Restricted Cash and Cash Equivalents, Current   563   370      
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents   2,559 $ 2,335 1,990   $ 2,087  
Accounts Receivable, Allowance for Credit Loss, Current   32   15      
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)   27 25        
Accounts Receivable, Allowance for Credit Loss, Writeoff   (13) (32)        
Financing Receivable, Allowance for Credit Loss, Recovery   (1) 0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation   (3) (15)        
Accounts and Financing Receivable, Allowance for Credit Loss   74 62 64   84  
Preferred Stock, Value, Issued   0 $ 838 838      
Additional Paid in Capital   $ 6,949   6,355      
Obligations Number Of Agreements   140          
Guarantor Obligations, Maximum Exposure, Undiscounted   $ 4,840          
Supplier Finance Program, Obligation   698   974      
Investment Tax Credit   351          
Proceeds Investment Tax Credits   227          
Subsequent Event [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Proceeds Investment Tax Credits $ 124            
Income Tax Benefit              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Investment Tax Credit   173          
Contribution From Noncontrolling Interest              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Investment Tax Credit   $ 178          
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Jordan (IPP1 & IPP4)              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Disposal Group Not Discontinued Operation Ownership Interest Sold   26.00% 24.00%   49.00%   26.00%
Secured Debt [Member] | Standby Letters of Credit [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Obligations Number Of Agreements | agreement   8          
Guarantor Obligations, Maximum Exposure, Undiscounted   $ 290          
Accounts Payable and Accrued Liabilities | Supplier Finance Program [Domain]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Supplier Finance Program, Obligation, Current     $ 447 814      
Accounts Payable and Accrued Liabilities | Minimum [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Supplier Finance Program, Obligation, Current       1      
Accounts Payable and Accrued Liabilities | Maximum [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Supplier Finance Program, Obligation, Current     $ 62 $ 69      
Accounts Payable and Accrued Liabilities | Weighted Average [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Debt, Weighted Average Interest Rate | Rate     6.93% 7.51%      
Mong Duong Subsidiary [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Accounts Receivable, Allowance for Credit Loss, Current   24 $ 26 $ 26   28  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)   0 0        
Accounts Receivable, Allowance for Credit Loss, Writeoff   0 0        
Financing Receivable, Allowance for Credit Loss, Recovery   (2) (2)        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation   0 0        
Accounts Receivable, Allowance for Credit Loss   24   26      
AES Argentina [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Accounts Receivable, Allowance for Credit Loss, Current   6 16 7   31  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)   0 0        
Accounts Receivable, Allowance for Credit Loss, Writeoff   0 0        
Financing Receivable, Allowance for Credit Loss, Recovery   0 0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation   (1) (15)        
Other Entity [Member]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Accounts Receivable, Allowance for Credit Loss, Current   12 12 16   $ 1  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)   5 11        
Accounts Receivable, Allowance for Credit Loss, Writeoff   (8) 0        
Financing Receivable, Allowance for Credit Loss, Recovery   0 0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation   (1) 0        
AES Gilbert              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Accounts Receivable, Allowance for Credit Loss, Current     0 $ 20      
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease)     0        
Accounts Receivable, Allowance for Credit Loss, Writeoff     (20)        
Financing Receivable, Allowance for Credit Loss, Recovery     0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation     $ 0        
AES Brasil [Domain]              
New Accounting Pronouncements or Change in Accounting Principle [Line Items]              
Selling Expense   $ 13