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Equity (Transactions with Noncontrolling Interests) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Noncontrolling Interest [Abstract]                      
Net income (loss) attributable to The AES Corporation $ (206) $ 71 $ 167 $ 82 $ 175 $ (1,568) $ 140 $ 341 $ 114 $ (912) $ 58
Net increase in The AES Corporation's paid-in capital for sale of subsidiary shares                 16 7  
Increase (decrease) in The AES Corporation's paid-in capital for purchase of subsidiary shares                 (6) 4  
Net Transfers To From Noncontrolling Interests                 10 11  
Change In Net Income Attributable To Parent Due To Transfers To From Noncontrolling Interests                 124 (901)  
Chile
                      
Transfers To Noncontrolling Interests Table [Line Items]                      
Number of projects under development 2               2    
Gain (loss) on disposition of stock in subsidiary or equity method investee                 $ (16)