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Basis of Presentation - Schedule of Income and Expenses of Foreign Operations (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
USD [Member] |  |  |
Disclosure Of Basis Of Preparation [Line Items] |  |  |
Average exchange rate | 19.2357 | 18.9326 | 18.6568
Euro [Member] |  |  |
Disclosure Of Basis Of Preparation [Line Items] |  |  |
Average exchange rate | 1.1815 | 1.1293 | 1.1066

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- Definition The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The disclosure of basis of preparations. + References No definition available. + Details
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- Details
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- Details
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