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Significant Accounting Policies - Summary of cumulative inflation (Detail) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Mexico |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 11.20% | 13.20% | 15.70%
Guatemala |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 10.90% | 11.80% | 12.20%
Costa Rica |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 4.50% | 5.80% | 5.70%
Panama |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | (1.50%) | 0.50% | 2.10%
Colombia |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 13.50% | 11.00% | 13.40%
Nicaragua |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 8.80% | 15.60% | 13.10%
Argentina |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 209.20% | 179.40% | 158.40%
Brazil |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 13.10% | 11.10% | 13.10%
Uruguay |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 28.50% | 22.00% | 25.30%
Philippines |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 11.90%

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