v3.26.1
Equity Reclassifications Out of AOCL (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Cost of Product and Service Sold $ (2,540) $ (2,485)
General and Administrative Expense (55) (77)
Other expense (58) (52)
Interest expense (353) (342)
Loss on disposal and sale of business interests 0 (1)
Impairment expense (12) (49)
Foreign currency transaction gains (losses) 11 (10)
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES 242 (22)
Income tax benefit (expense) 41 (17)
Income (Loss) from Equity Method Investments (8) (34)
Net income (loss) 275 (73)
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION 487 46
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (4)  
Net Income (Loss) Attributable to Noncontrolling Interest 212 119
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0  
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 0  
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income [Member]    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Cost of Product and Service Sold (2) 1
Interest expense (2) 16
Foreign currency transaction gains (losses) 2 3
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES AND EQUITY IN EARNINGS OF AFFILIATES (1) 20
Income tax benefit (expense) (1) (6)
Net income (loss) (2)  
Net Income (Loss) Attributable to Noncontrolling Interest   1
Accumulated Gain (Loss), Net, Cash Flow Hedge, Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income [Member]    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Less: Net loss attributable to noncontrolling interests and redeemable stock of subsidiaries 6  
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION 4  
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION   15
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (4)  
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent | Reclassification out of Accumulated Other Comprehensive Income [Member]    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Non-regulated revenue 1 0
INCOME FROM CONTINUING OPERATIONS   14
Income Statement Location [Axis]: us-gaap:OtherExpenses    
Reclassifications Out Of Accumulated Other Comprehensive Income [Line Items]    
Other expense $ (58) $ (52)