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Intangible Assets - Disclosure of Detailed Information About Key Assumptions by CGU for Impairment Test (Detail) | Dec. 31, 2019 | Dec. 31, 2018
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Mexico [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 7.30% | 7.40%
Post-tax WACC | 5.20% | 5.30%
Guatemala [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 9.10% | 9.40%
Post-tax WACC | 7.10% | 7.50%
Nicaragua [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 21.10% | 21.20%
Post-tax WACC | 12.40% | 11.00%
Costa Rica [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 13.80% | 13.90%
Post-tax WACC | 9.70% | 9.20%
Panama [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 8.50% | 9.20%
Post-tax WACC | 6.60% | 7.00%
Colombia [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 8.90% | 7.80%
Post-tax WACC | 6.20% | 5.20%
Brazil [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 9.30% | 10.70%
Post-tax WACC | 5.60% | 6.60%
Argentina [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 21.60% | 19.60%
Post-tax WACC | 14.80% | 11.30%
Uruguay [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Pre-tax WACC | 9.40% |
Post-tax WACC | 6.80% |
2020-2029 [member] | Mexico [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 3.50% |
Expected volume growth rates | 0.70% |
2020-2029 [member] | Guatemala [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 4.00% |
Expected volume growth rates | 8.50% |
2020-2029 [member] | Nicaragua [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 4.40% |
Expected volume growth rates | 3.00% |
2020-2029 [member] | Costa Rica [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 2.20% |
Expected volume growth rates | 2.10% |
2020-2029 [member] | Panama [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 2.00% |
Expected volume growth rates | 5.40% |
2020-2029 [member] | Colombia [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 3.10% |
Expected volume growth rates | 4.00% |
2020-2029 [member] | Brazil [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 3.60% |
Expected volume growth rates | 2.00% |
2020-2029 [member] | Argentina [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 39.20% |
Expected volume growth rates | 3.70% |
2020-2029 [member] | Uruguay [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation | 7.40% |
Expected volume growth rates | 2.00% |
2019-2028 [member] | Mexico [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 4.00%
Expected volume growth rates |  | 1.40%
2019-2028 [member] | Guatemala [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 3.20%
Expected volume growth rates |  | 7.30%
2019-2028 [member] | Nicaragua [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 6.20%
Expected volume growth rates |  | 3.80%
2019-2028 [member] | Costa Rica [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 4.00%
Expected volume growth rates |  | 1.60%
2019-2028 [member] | Panama [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 2.40%
Expected volume growth rates |  | 3.00%
2019-2028 [member] | Colombia [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 3.10%
Expected volume growth rates |  | 4.00%
2019-2028 [member] | Brazil [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 3.80%
Expected volume growth rates |  | 1.70%
2019-2028 [member] | Argentina [member] |  |
Disclosure of detailed information about intangible assets [line items] |  |
Expected annual long term inflation |  | 21.90%
Expected volume growth rates |  | 2.70%

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