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Investments In and Advances To Affiliates (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Investments in and Advances to Affiliates [Line Items] |  |
Operating margin | $ 721 us-gaap_GrossProfit | $ 794 us-gaap_GrossProfit
Net income | 254 us-gaap_ProfitLoss | 66 us-gaap_ProfitLoss
Acquisitions, net of cash acquired | (17)us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates | 0 us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates
Proceeds from Interests in Affiliate | 0 us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates | 29 us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates
Minority Owned Affiliates [Member] |  |
Investments in and Advances to Affiliates [Line Items] |  |
Revenue | 184 us-gaap_Revenues / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = aes_MinorityOwnedAffiliatesMember | 277 us-gaap_Revenues / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = aes_MinorityOwnedAffiliatesMember
Operating margin | 56 us-gaap_GrossProfit / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = aes_MinorityOwnedAffiliatesMember | 77 us-gaap_GrossProfit / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = aes_MinorityOwnedAffiliatesMember
Net income | $ 36 us-gaap_ProfitLoss / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = aes_MinorityOwnedAffiliatesMember | $ 49 us-gaap_ProfitLoss / us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis = aes_MinorityOwnedAffiliatesMember

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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The cash outflow associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with the amount received from the sale of a business segment or subsidiary or sale of an entity that is related to it but not strictly controlled during the period (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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