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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Income Tax Disclosures [Line Items]        
Effective Income Tax Rate Reconciliation, Percent 24.00% 22.00% 26.00% 16.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     21.00%  
Income Tax Expense (Benefit) $ 145 $ 126 $ 186 $ 75
AES Argentina [Member]        
Income Tax Disclosures [Line Items]        
Income Tax Expense (Benefit)     $ 19  
AES Brasil [Domain]        
Income Tax Disclosures [Line Items]        
Income Tax Expense (Benefit)       96
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount       $ 44