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Foreign Currency Transactions - Summary of Exchange Rate in Effect (Detail) | May 22, 2020 Exchange_Rate | Dec. 31, 2019 Exchange_Rate | Dec. 04, 2019 $ / $ | Dec. 31, 2018 Exchange_Rate | Jun. 12, 2018 $ / $ | Dec. 31, 2017 Exchange_Rate | Mar. 23, 2017 $ / $
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Foreign currency transactions [Line Items] |  |  |  |  |  |  |
Mexican pesos per one U.S. dollar |  | 18.8452 | 19.1785 | 19.6829 | 19.0115 | 19.7354 | 19.4942
Exchange rates in effect [Member] |  |  |  |  |  |  |
Foreign currency transactions [Line Items] |  |  |  |  |  |  |
Mexican pesos per one U.S. dollar | 23.2962 |  |  |  |  |  |

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- Definition The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard -URIDate 2019-03-27 + Details
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