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Schedule I - Condensed Financial Information of Parent (Statement of Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
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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
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION | $ (206) | $ 71 | $ 167 | $ 82 | $ 175 | $ (1,568) | $ 140 | $ 341 | $ 114 | $ (912) | $ 58
Available-for-sale securities activity: |  |  |  |  |  |  |  |  |  |  |
Change in fair value of available-for-sale securities, net of income tax (expense) benefit of $0, $0 and $0, respectively |  |  |  |  |  |  |  |  | (1) | 1 | 1
Reclassification to earnings, net of income tax (expense) benefit of $0, $0 and $0, respectively |  |  |  |  |  |  |  |  | 1 | (1) | (2)
Total change in fair value of available-for-sale securities |  |  |  |  |  |  |  |  | 0 | 0 | (1)
Foreign currency translation activity: |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustments, net of income tax (expense) benefit of $10, $0 and $18, respectively |  |  |  |  |  |  |  |  | (375) | (247) | (484)
Reclassification to earnings, net of income tax (expense) benefit of $0, $0 and $0, respectively |  |  |  |  |  |  |  |  | 41 | 37 | 188
Total foreign currency translation adjustments |  |  |  |  |  |  |  |  | (334) | (210) | (296)
Derivative activity: |  |  |  |  |  |  |  |  |  |  |
Change in derivative fair value, net of income tax (expense) benefit of $(31), $33 and $95, respectively |  |  |  |  |  |  |  |  | 108 | (134) | (379)
Reclassification to earnings, net of income tax (expense) benefit of $(32), $(51) and $(21), respectively |  |  |  |  |  |  |  |  | 139 | 177 | 137
Total change in fair value of derivatives |  |  |  |  |  |  |  |  | 247 | 43 | (242)
Pension activity: |  |  |  |  |  |  |  |  |  |  |
Prior service cost for the period, net of tax |  |  |  |  |  |  |  |  | 0 | (1) | 0
Net actuarial (loss) for the period, net of income tax (expense) benefit of $(42), $64 and $25, respectively |  |  |  |  |  |  |  |  | 379 | (587) | (223)
Amortization of net actuarial loss, net of income tax (expense) benefit of $(5), $(5) and $(1), respectively |  |  |  |  |  |  |  |  | 52 | 24 | 13
Total pension adjustments |  |  |  |  |  |  |  |  | 431 | (564) | (210)
OTHER COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | 344 | (731) | (749)
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | 895 | (1,088) | 781
Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) ATTRIBUTABLE TO THE AES CORPORATION |  |  |  |  |  |  |  |  | 114 | (912) | 58
Available-for-sale securities activity: |  |  |  |  |  |  |  |  |  |  |
Change in fair value of available-for-sale securities, net of income tax (expense) benefit of $0, $0 and $0, respectively |  |  |  |  |  |  |  |  | (1) | 1 | 1
Reclassification to earnings, net of income tax (expense) benefit of $0, $0 and $0, respectively |  |  |  |  |  |  |  |  | 1 | (1) | (2)
Total change in fair value of available-for-sale securities |  |  |  |  |  |  |  |  | 0 | 0 | (1)
Foreign currency translation activity: |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustments, net of income tax (expense) benefit of $10, $0 and $18, respectively |  |  |  |  |  |  |  |  | (263) | (127) | (297)
Reclassification to earnings, net of income tax (expense) benefit of $0, $0 and $0, respectively |  |  |  |  |  |  |  |  | 36 | 37 | 154
Total foreign currency translation adjustments |  |  |  |  |  |  |  |  | (227) | (90) | (143)
Derivative activity: |  |  |  |  |  |  |  |  |  |  |
Change in derivative fair value, net of income tax (expense) benefit of $(31), $33 and $95, respectively |  |  |  |  |  |  |  |  | 46 | (108) | (311)
Reclassification to earnings, net of income tax (expense) benefit of $(32), $(51) and $(21), respectively |  |  |  |  |  |  |  |  | 128 | 161 | 121
Total change in fair value of derivatives |  |  |  |  |  |  |  |  | 174 | 53 | (190)
Pension activity: |  |  |  |  |  |  |  |  |  |  |
Prior service cost for the period, net of tax |  |  |  |  |  |  |  |  | 0 | (1) | 0
Net actuarial (loss) for the period, net of income tax (expense) benefit of $(42), $64 and $25, respectively |  |  |  |  |  |  |  |  | 78 | (130) | (43)
Amortization of net actuarial loss, net of income tax (expense) benefit of $(5), $(5) and $(1), respectively |  |  |  |  |  |  |  |  | 13 | 6 | 2
Total pension adjustments |  |  |  |  |  |  |  |  | 91 | (125) | (41)
OTHER COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | 38 | (162) | (375)
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | $ 152 | $ (1,074) | $ (317)

X
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- Definition Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669646-108580 + Details
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