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Debt (Subsidiary Non-Recourse Debt in Default or Accelerated) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014
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Debt Details [Line Items] |
Debt default amount | $ 858 aes_DebtDefaultAmount
Maritza |
Debt Details [Line Items] |
Net assets | 581 us-gaap_AssetsNet / aes_DebtDefaultBySubsidiaryAxis = aes_MaritzaMember
Maritza | Covenant Violation |
Debt Details [Line Items] |
Debt default amount | 690 aes_DebtDefaultAmount / aes_DebtDefaultBySubsidiaryAxis = aes_MaritzaMember / aes_TypeOfDebtDefaultAxis = aes_CovenantViolationMember
Kavarna |
Debt Details [Line Items] |
Net assets | 75 us-gaap_AssetsNet / aes_DebtDefaultBySubsidiaryAxis = aes_KavarnaMember
Kavarna | Covenant Violation |
Debt Details [Line Items] |
Debt default amount | $ 168 aes_DebtDefaultAmount / aes_DebtDefaultBySubsidiaryAxis = aes_KavarnaMember / aes_TypeOfDebtDefaultAxis = aes_CovenantViolationMember

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- Definition Amount of outstanding debt or borrowing associated with any securities or credit agreement for which there has been a default in principal, interest, sinking fund, or redemption provisions, or any breach of covenant that existed at the end of the period and subsequently has not been cured. + References No definition available. + Details
Name: | aes_DebtDefaultAmount
Namespace Prefix: | aes_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | aes_DebtDetailsLineItems
Namespace Prefix: | aes_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of net assets (liabilities). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09.6,7) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606914-122999 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35686370&loc=SL35686385-199418 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 2 -Subparagraph (SX 210.6-05.4) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e604008-122996 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 05 -Paragraph 4 -Article 6 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Paragraph 19 -Article 6 + Details
Name: | us-gaap_AssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | aes_DebtDefaultBySubsidiaryAxis=aes_KavarnaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | aes_DebtDefaultBySubsidiaryAxis=aes_MaritzaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |