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Equity (Equity Units) (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2022
Feb. 05, 2024
$ / shares
shares
Dec. 31, 2023
USD ($)
shares
Mar. 31, 2023
USD ($)
Mar. 04, 2021
$ / shares
Equity [Abstract]            
Equity Unit, Shares Issued | shares 10,430,500          
Corporate Equity Unit, Stated Value Per Share | $ / shares $ 100          
Preferred Stock, Beneficial Ownership Interest in One Share 0.10          
Preferred Stock, Dividend Rate, Percentage 0.00%          
Preferred Stock, Liquidation Preference Per Share | $ / shares $ 1,000          
Proceeds from Equity Units, net of underwriting costs and commissions, before offering expenses | $ $ 1,000          
Preferred Stock, Shares Issued | shares 1,043,050     1,043,050    
Preferred stock (without par value, 50,000,000 shares authorized; 1,043,050 issued and outstanding at December 31, 2023) | $ $ 0     $ 838    
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share | $ / shares $ 100          
Forward Contract Indexed to Issuer's Equity, Shares | shares 57,467,883          
Forward Contract Indexed to Issuer's Equity, Settlement Rate | shares     3.8859 3.864    
Shares Issued, Price Per Share | $ / shares     $ 25.73     $ 25.88
Forward Contract Indexed to Issuer's Equity, Interest Rate 0.06875          
Forward Contract Indexed to Issuer's Equity, Present Value of Interest Payments | $         $ 205  
Accretion Expense | $ $ 5          
Corporate Unit, Notional Value | $ $ 1,043          
Preferred Stock, Convertible, Shares Issuable | shares 40,531,845          
AES Gener            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Preferred Stock, Participation Rights   12 million