v3.26.1
Equity Equity Transactions with Noncontrolling Interests (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2023
Feb. 23, 2026
Dec. 31, 2025
Dec. 31, 2024
Mar. 31, 2023
Noncontrolling Interest [Line Items]              
Contributions from noncontrolling interests $ 37 $ 73          
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 9,356       $ 9,105    
Payments to Noncontrolling Interests 488 84          
NET INCOME ATTRIBUTABLE TO THE AES CORPORATION 487 46          
Change from net income attributable to The AES Corporation and transfers (to) from noncontrolling interests 485 31          
Reclassifications of Temporary to Permanent Equity 0 (38)          
Net transfers (to) from noncontrolling interest 2 15          
Energy Infrastructure              
Noncontrolling Interest [Line Items]              
Noncontrolling Interest, Ownership Percentage by Parent       99.60%      
Cochrane Subsidiary [Member]              
Noncontrolling Interest [Line Items]              
Acquisitions of Noncontrolling Interests 29            
Chile Renovables SpA              
Noncontrolling Interest [Line Items]              
Sale of Stock, Consideration Received on Transaction   14          
Adjustments to Additional Paid in Capital, Other   (3)          
Noncontrolling Interest, Change in Redemption Value   17          
Proceeds from Issuance or Sale of Equity     $ 275        
Chile Renovables SpA | Global Infrastructure Management              
Noncontrolling Interest [Line Items]              
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners             49.00%
AES Indiana Pike County BESS              
Noncontrolling Interest [Line Items]              
Reclassifications of Temporary to Permanent Equity   38          
AES Clean Energy Development              
Noncontrolling Interest [Line Items]              
Noncontrolling Interest, Increase from Subsidiary Equity Issuance   82          
AES Indiana              
Noncontrolling Interest [Line Items]              
Noncontrolling Interest, Increase from Subsidiary Equity Issuance   150          
AES Indiana Petersburg Energy Center              
Noncontrolling Interest [Line Items]              
Sales to noncontrolling interests 120            
Additional Paid-in Capital [Member]              
Noncontrolling Interest [Line Items]              
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 5,885 5,888     $ 5,904 $ 5,913  
Sales to noncontrolling interests (1) (15)          
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests $ (1) $ 0