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Risks and Uncertainties (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Unusual Risk or Uncertainty [Line Items] |  |
Debt Default Amount | $ 998 |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 1,282 | $ 1,197
PUERTO RICO | Covenant Violation [Member] |  |
Unusual Risk or Uncertainty [Line Items] |  |
Debt Default Amount | 334 |
Alto Maipo [Member] | Covenant Violation [Member] |  |
Unusual Risk or Uncertainty [Line Items] |  |
Debt Default Amount | 629 |
AES llumina [Member] | Covenant Violation [Member] |  |
Unusual Risk or Uncertainty [Line Items] |  |
Debt Default Amount | 35 |
Alto Maipo [Member] |  |
Unusual Risk or Uncertainty [Line Items] |  |
Assets Carrying Amount Disclosure Nonrecurring | 1,500 |
Deferred Tax Assets, Net | 55 |
Project Budgeted Cost | $ 2,000 |

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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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