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Credit Losses (Details) - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accounts Receivable, Allowance for Credit Loss, Current $ 52,000,000 $ 15,000,000 $ 32 $ 22  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 58,000,000 40,000,000      
Accounts Receivable, Allowance for Credit Loss, Writeoff (13,000,000) (35,000,000)      
Accounts Receivable, Allowance for Credit Loss, Recovery (1,000,000) (1,000,000)      
Accounts receivable, allowance for credit loss, disposal 7,000,000        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (5,000,000) (23,000,000)      
Accounts and Financing Receivable, Allowance for Credit Loss 96,000,000 64,000,000     $ 83,000,000
AES Gilbert          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accounts Receivable, Allowance for Credit Loss, Current   0      
Mong Duong Subsidiary [Member]          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accounts Receivable, Allowance for Credit Loss, Current 23,000,000 25,000,000     28,000,000
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 0 0      
Accounts Receivable, Allowance for Credit Loss, Writeoff 0 0      
Accounts Receivable, Allowance for Credit Loss, Recovery (2,000,000) (3,000,000)      
Accounts receivable, allowance for credit loss, disposal 0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation 0 0      
AES Argentina [Member]          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accounts Receivable, Allowance for Credit Loss, Current 5,000,000 7,000,000     30,000,000
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 0 0      
Accounts Receivable, Allowance for Credit Loss, Writeoff 0 0      
Accounts Receivable, Allowance for Credit Loss, Recovery 0 0      
Accounts receivable, allowance for credit loss, disposal 0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (2,000,000) (23,000,000)      
Other Entity [Member]          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accounts Receivable, Allowance for Credit Loss, Current 16,000,000 17,000,000     2,000,000
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 15,000,000 17,000,000      
Accounts Receivable, Allowance for Credit Loss, Writeoff (6,000,000) 0      
Accounts Receivable, Allowance for Credit Loss, Recovery 0 0      
Accounts receivable, allowance for credit loss, disposal (7,000,000)        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (3,000,000) (2,000,000)      
Accounts Receivable          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accounts Receivable, Allowance for Credit Loss, Current 52,000,000 15,000,000     $ 3,000,000
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 43,000,000 23,000,000      
Accounts Receivable, Allowance for Credit Loss, Writeoff (7,000,000) (15,000,000)      
Accounts Receivable, Allowance for Credit Loss, Recovery (1,000,000) (2,000,000)      
Accounts receivable, allowance for credit loss, disposal 0        
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation $ 0 $ 2,000,000