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v3.20.1

Significant Accounting Policies - Summary of cumulative inflation (Detail) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
2017-2019 [member] | Mexico [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 13.20% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Guatemala [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 11.80% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Costa Rica [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 5.80% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Panama [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 0.50% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Colombia [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 11.00% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Nicaragua [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 15.60% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Argentina [member] | Hyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 179.40% |  |
Type of Economy | Hyperinflationary |  |
2017-2019 [member] | Brazil [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 11.10% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Uruguay [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage | 22.00% |  |
Type of Economy | Non-hyperinflationary |  |
2017-2019 [member] | Philippinnes [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Type of Economy | Non-hyperinflationary |  |
2016- 2018 [member] | Mexico [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 15.70% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Guatemala [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 12.20% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Costa Rica [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 5.70% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Panama [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 2.10% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Colombia [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 13.40% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Nicaragua [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 13.10% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Argentina [member] | Hyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 158.40% |
Type of Economy |  | Hyperinflationary |
2016- 2018 [member] | Brazil [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 13.10% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Uruguay [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 25.30% |
Type of Economy |  | Non-hyperinflationary |
2016- 2018 [member] | Philippinnes [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  | 11.90% |
Type of Economy |  | Non-hyperinflationary |
2015-2017 [member] | Mexico [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 12.70%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Guatemala [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 13.50%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Costa Rica [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 2.50%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Panama [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 2.30%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Colombia [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 17.50%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Nicaragua [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 12.30%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Argentina [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 101.50%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Brazil [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 21.10%
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Uruguay [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Type of Economy |  |  | Non-hyperinflationary
2015-2017 [member] | Philippinnes [member] | Nonhyperinflationary [member] |  |  |
Disclosure Of Cumulative Inflation [line items] |  |  |
Cumulative inflation percentage |  |  | 7.50%
Type of Economy |  |  | Non-hyperinflationary

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