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v3.21.1

Basis of Preparation (Detail) - $ / $ | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Apr. 09, 2021 | Dec. 31, 2019
Disclosure of detailed information about investment property [line items] |  |  |
Conversion rate of Mexican pesos to U.S. dollars | 19.8920 |  |
Description of significant influence | If the Company holds, directly or indirectly, 20 per cent or more of the voting power of the investee, it is presumed that it has significant influence, unless it can be clearly demonstrated that this is not the case. If the Company holds, directly or indirectly, less than 20 per cent of the voting power of the investee, it is presumed that the Company does not have significant influence, unless such influence can be clearly demonstrated. |  |
Weighted average incremental borrowing rate | 9.49% |  | 10.18%
Changes in foreign exchange rates [member] |  |  |
Disclosure of detailed information about investment property [line items] |  |  |
Conversion rate of Mexican pesos to U.S. dollars |  | 20.1620 |
Increase decrease in foreign currency exchange rate |  | 1.00% |

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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 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The explanation of the nature and amount of individually significant transactions with a government that has control, joint control or significant influence over the reporting entity and entities under control, joint control or significant influence of that government. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2020-01-01 -Paragraph 26 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_26_b_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2020-01-01 + Details
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