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Significant Accounting Policies - Disclosure of Exchange Rates of Local Currencies Translated to Mexican Pesos (Detail) | 12 Months Ended
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Dec. 31, 2019 $ / $ | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of significant accounting policies [line items] |  |  |
Exchange Rate as of | 18.8600 |  |
Guatemala [member] | Guatemala, Quetzal [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Quetzal |  |
Average Exchange Rate for | 250 | 256 | 257
Exchange Rate as of | 2.45 | 2.54 |
Costa Rica [member] | Costa Rica, Colon [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Colon |  |
Average Exchange Rate for | 3 | 3 | 3
Exchange Rate as of | 0.03 | 0.03 |
Panama [member] | U S dollar [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | U.S. dollar |  |
Average Exchange Rate for | 1,926 | 1,924 | 1,893
Exchange Rate as of | 18.85 | 19.68 |
Colombia [member] | Colombian peso [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Colombian peso |  |
Average Exchange Rate for | 1 | 1 | 1
Exchange Rate as of | 0.01 | 0.01 |
Nicaragua [member] | Nicaragua, Cordoba [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Cordoba |  |
Average Exchange Rate for | 58 | 62 | 63
Exchange Rate as of | 0.56 | 0.61 |
Argentina [member] | Argentine peso [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Argentine peso |  |
Average Exchange Rate for | 41 | 73 | 115
Exchange Rate as of | 0.31 | 0.52 |
Venezuela [member] | Venezuelan bolivar fuerte [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Bolivar |  |
Average Exchange Rate for | 0 |  |
Exchange Rate as of | 0 |  |
Brazil [member] | Brazilian reais [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Reais |  |
Average Exchange Rate for | 489 | 529 | 594
Exchange Rate as of | 4.68 | 5.08 |
Chile [member] | Chilean peso [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Chilean peso |  |
Average Exchange Rate for | 3 | 3 | 3
Exchange Rate as of | 0.03 | 0.03 |
Euro Zone [member] | Euro [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Euro (€) |  |
Average Exchange Rate for | 2,156 | 2,271 | 2,132
Exchange Rate as of | 21.12 | 22.54 |
Peru [member] | Peru, Nuevo Sol [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Nuevo Sol |  |
Average Exchange Rate for | 577 | 585 | 578
Exchange Rate as of | 5.68 | 5.83 |
Ecuador [member] | U S dollar [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | U.S. dollar |  |
Average Exchange Rate for | 1,926 | 1,924 | 1,893
Exchange Rate as of | 18.85 | 19.68 |
Philippines [member] | Philippine peso [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Philippine peso |  |
Average Exchange Rate for | 0 | 37 | 38
Exchange Rate as of | 0 | 0.37 |
Uruguay [member] | Uruguay Peso en Unidades Indexadas (UPUI) [member] |  |  |
Disclosure of significant accounting policies [line items] |  |  |
Functional / Recording Currency | Uruguayan peso |  |
Average Exchange Rate for | 55 | 63 | 66
Exchange Rate as of | 0.51 | 0.61 |

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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 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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- 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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- Definition The description of the currency of the primary economic environment in which the entity operates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2019-01-01 -Paragraph 53 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2019-en-r&anchor=para_53&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2019-01-01 -Paragraph 57 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2019-en-r&anchor=para_57_c&doctype=Standard -URIDate 2019-03-27 + Details
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