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Investments In and Advances To Affiliates (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract] |
Equity Ownership Interest And Carrying Values Of Investments Accounted For Under The Equity Method | The following table summarizes the relevant effective equity ownership interest and carrying values for the Company's investments accounted for under the equity method as of the periods indicated:
December 31, |  |  | 2017 |  | 2016 |  | 2017 |  | 2016
Affiliate | Country |  | Carrying Value (in millions) |  | Ownership Interest %
sPower | United States |  | $ | 508 |  |  | $ | — |  |  | 50 | % |  | — | %
Guacolda (1) | Chile |  | 357 |  |  | 362 |  |  | 33 | % |  | 33 | %
OPGC (2) | India |  | 269 |  |  | 195 |  |  | 49 | % |  | 49 | %
Elsta (3) | Netherlands |  | 38 |  |  | 41 |  |  | 50 | % |  | 50 | %
Equity method investments of Distributed Energy (3) | United States |  | 15 |  |  | 22 |  |  | 95 | % |  | 95 | %
Barry (3) | United Kingdom |  | — |  |  | — |  |  | 100 | % |  | 100 | %
Other affiliates | Various |  | 10 |  |  | 1 |  |  |  |  |
Total |  |  | $ | 1,197 |  |  | $ | 621 |  |  |  |  |
_____________________________
(1) | The Company's ownership in Guacolda is held through AES Gener, a 67%-owned consolidated subsidiary. AES Gener owns 50% of Guacolda, resulting in an AES effective ownership in Guacolda of 33%.
(2) | OPGC has one coal-fired project under development which is an expansion of our existing OPGC business. The project started construction in April 2014 and is expected to begin operations in 2019.
(3) | Represent VIEs in which the Company holds a variable interest, but is not the primary beneficiary.
Investments In and Advances to Affiliates Financial Information | The following tables summarize financial information of the Company's 50%-or-less-owned affiliates and majority-owned unconsolidated subsidiaries that are accounted for using the equity method (in millions):
| 50%-or-less Owned Affiliates |  | Majority-Owned Unconsolidated Subsidiaries
Years ended December 31, | 2017 |  | 2016 |  | 2015 |  | 2017 |  | 2016 |  | 2015
Revenue | $ | 762 |  |  | $ | 586 |  |  | $ | 641 |  |  | $ | 16 |  |  | $ | 23 |  |  | $ | 24 |
Operating margin | 165 |  |  | 145 |  |  | 152 |  |  | 5 |  |  | 9 |  |  | 11 |
Net income (loss) | 72 |  |  | 64 |  |  | 210 |  |  | (15 | ) |  | (2 | ) |  | 6 |
December 31, | 2017 |  | 2016 |  |  |  | 2017 |  | 2016 |  |
Current assets | $ | 418 |  |  | $ | 308 |  |  |  |  | $ | 70 |  |  | $ | 16 |  |  |
Noncurrent assets | 5,372 |  |  | 2,577 |  |  |  |  | 102 |  |  | 181 |  |  |
Current liabilities | 633 |  |  | 626 |  |  |  |  | 10 |  |  | 10 |  |  |
Noncurrent liabilities | 2,629 |  |  | 1,209 |  |  |  |  | 147 |  |  | 122 |  |  |
Stockholders' equity | 2,527 |  |  | 1,048 |  |  |  |  | 15 |  |  | 65 |  |  |

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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- Definition A tabular presentation of the information summarizing investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates, as prescribed by the SEC. It reflects specified information about ownership, financial results from, and financial position in such entities. Includes the tabular presentations that disaggregate investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates. + References No definition available. + Details
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