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Financial Statement Presentation New Accounting Pronouncement Adopted (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2024
USD ($)
agreement
Jun. 30, 2023
USD ($)
Rate
Dec. 31, 2023
USD ($)
agreement
Rate
Dec. 31, 2022
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Cash and Cash Equivalents, at Carrying Value $ 1,773   $ 1,426  
Restricted Cash and Cash Equivalents, Current 299   370  
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 2,148 $ 2,010 1,990 $ 2,087
Accounts Receivable, Allowance for Credit Loss, Current 22   15  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 14 19    
Accounts Receivable, Allowance for Credit Loss, Writeoff (11) (27)    
Financing Receivable, Allowance for Credit Loss, Recovery (1) (1)    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (3) (10)    
Accounts and Financing Receivable, Allowance for Credit Loss 65 67 64 84
Preferred Stock, Value, Issued 0 838 838  
Additional Paid in Capital $ 7,067   6,355  
Obligations Number Of Agreements 131      
Guarantor Obligations, Maximum Exposure, Undiscounted $ 3,740      
Secured Debt [Member] | Standby Letters of Credit [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Obligations Number Of Agreements | agreement 4      
Guarantor Obligations, Maximum Exposure, Undiscounted $ 220      
Accounts Payable and Accrued Liabilities        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Supplier Finance Program, Obligation, Current $ 553   $ 974  
Obligations Number Of Agreements | agreement 26   28  
Accounts Payable and Accrued Liabilities | Supplier Finance Program [Domain]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Supplier Finance Program, Obligation, Current   344 $ 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   $ 96 $ 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   7.38% 7.51%  
Accounts Receivable [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current $ 22 $ 8 $ 15 3
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 10 10    
Accounts Receivable, Allowance for Credit Loss, Writeoff (4) (7)    
Financing Receivable, Allowance for Credit Loss, Recovery (1) (2)    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation 0    
Mong Duong Subsidiary [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 25 28 26 29
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 (1) (1)    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation 0 0    
Accounts Receivable, Allowance for Credit Loss 25   26  
AES Argentina [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 7 21 7 30
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 (1) 0    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (1) (9)    
Other Entity [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 11 10 $ 16 2
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 4 9    
Accounts Receivable, Allowance for Credit Loss, Writeoff (7) 0    
Financing Receivable, Allowance for Credit Loss, Recovery 0 0    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation $ (2) (1)    
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, Foreign Currency Translation   $ 0