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Significant Accounting Policies - Summary of Average Exchange Rate (Detail) | 12 Months Ended
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Dec. 31, 2020 $ / $ | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of foreign exchange rates [line items] |  |  |
Exchange rate | 19.8920 |  |
Mexican peso |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 1.00 | 1.00 | 1.00
Exchange rate | 1.00 | 1.00 |
Quetzal |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 2.78 | 2.50 | 2.56
Exchange rate | 2.56 | 2.45 |
Colon |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 0.04 | 0.03 | 0.03
Exchange rate | 0.03 | 0.03 |
Balboa |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 21.49 | 19.26 | 19.24
Exchange rate | 19.95 | 18.85 |
Colombian peso |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 0.01 | 0.01 | 0.01
Exchange rate | 0.01 | 0.01 |
Cordoba |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 0.63 | 0.58 | 0.61
Exchange rate | 0.57 | 0.56 |
Argentine peso |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 0.31 | 0.41 | 0.73
Exchange rate | 0.24 | 0.31 |
Real |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 4.18 | 4.89 | 5.29
Exchange rate | 3.84 | 4.68 |
Philippine peso |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate |  |  | 0.37
Uruguayan peso |  |  |
Disclosure of foreign exchange rates [line items] |  |  |
Average exchange rate | 0.51 | 0.55 | 0.63
Exchange rate | 0.47 | 0.51 |

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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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