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Document And Entity Information - $ / shares
 9 Months Ended
Sep. 30, 2015
Nov. 02, 2015
Dec. 31, 2014
Document and Entity Information [Abstract]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 30, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q3    
Trading Symbol AES    
Entity Registrant Name AES CORP    
Entity Central Index Key 0000874761    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   672,862,161  
Common Stock, Par or Stated Value Per Share $ 0.01   $ 0.01