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General and Summary of Significant Accounting Policies New Accounting Pronouncements Adopted (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Financing Receivable, after Allowance for Credit Loss $ 193 $ 303    
Other assets 3,259 4,030    
Operating Lease, Right-of-Use Asset 380 356    
Revenues 12,668 12,617 $ 11,141  
Cost of Goods and Services Sold (10,164) (10,069) (8,430)  
Gross Profit 2,504 2,548 2,711  
Interest income 551 389 298  
Other Assets, Current 1,387 1,533    
Assets 44,799 38,363 32,963  
Retained Earnings (Accumulated Deficit) (1,386) (1,635)    
Cash and Cash Equivalents, at Carrying Value 1,426 1,374    
Restricted Cash and Cash Equivalents, Current 370 536    
Other Comprehensive Income (Loss), Effect of Change in Accounting Principle, Net of Taxes 69 748 292  
Debt service reserves and other deposits 194 177    
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 1,990 2,087 1,484 $ 1,827
Accumulated Other Comprehensive Income (Loss), Net of Tax (1,514) (1,640) (2,220)  
Stockholders' Equity Attributable to Noncontrolling Interest 3,497 2,067    
Liabilities and Equity 44,799 38,363    
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest 104 (169) (1,064)  
Income (Loss) from Continuing Operations, net of Tax (189) (505) (955)  
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest (182) (505) (951)  
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION 249 (546) (409)  
Accrued and other liabilities 1,334 1,489    
Other long-term liabilities 3,114 3,168    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value 792 1,384    
Financing Receivable, before Allowance for Credit Loss 193 303    
Accounts and Financing Receivable, Allowance for Credit Loss 64 83 63  
Financing Receivable, Allowance for Credit Loss 0 0    
Accounts Receivable, Allowance for Credit Loss, Current 15 5    
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 40 53    
Accounts Receivable, Allowance for Credit Loss, Writeoff (35) (19)    
Accounts Receivable, Allowance for Credit Loss, Recovery (1) 0    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (23) (14)    
Adjustments to Additional Paid in Capital, Other 13      
Purchases under supplier financing arrangements 1,858 (1,042) (91)  
Repayments of obligations under supplier financing arrangements 1,491 432 35  
Accounts payable 2,199 1,730    
Supplier financing arrangements 974 662    
Minimum        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Supplier financing arrangements 1 1    
Leasing Arrangement        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Loans and Leases Receivable, Allowance   1    
Property, Plant and Equipment [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Operating Lease, Right-of-Use Asset 1,227 1,319    
Accumulated Amortization on PP&E [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Operating Lease, Right-of-Use Asset 182 139    
Accounts Receivable        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 15 3 9  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 23 10    
Accounts Receivable, Allowance for Credit Loss, Writeoff (15) (19)    
Accounts Receivable, Allowance for Credit Loss, Recovery (2) (3)    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation 2 0    
Mong Duong Subsidiary [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 25 28 30  
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 (3) (2)    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation 0 0    
AES Argentina [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 7 30 23  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 0 22    
Accounts Receivable, Allowance for Credit Loss, Writeoff 0 0    
Accounts Receivable, Allowance for Credit Loss, Recovery 0 (1)    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (23) (14)    
Other Entity [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Accounts Receivable, Allowance for Credit Loss, Current 17 2 1  
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 17 1    
Accounts Receivable, Allowance for Credit Loss, Writeoff 0 0    
Accounts Receivable, Allowance for Credit Loss, Recovery 0 0    
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation (2) 0    
ARGENTINA        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Revenues $ 407 $ 501 $ 390