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v3.21.1

Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Schedule of Estimate Impairment Evaluations (Detail) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Brazil [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 40.67% | 40.43%
Average margin on CAPEX | 25.36% | 23.50%
Average pre-tax discount rate (WACC) | 9.50% | 11.00%
Puerto Rico [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 23.06% | 21.94%
Average margin on CAPEX | 14.57% | 17.94%
Average pre-tax discount rate (WACC) | 3.53% | 4.39%
Dominican Republic [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 47.57% | 47.23%
Average margin on CAPEX | 13.71% | 16.17%
Average pre-tax discount rate (WACC) | 8.27% | 13.84%
Mexico [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 32.69% | 38.81%
Average margin on CAPEX | 11.01% | 9.84%
Average pre-tax discount rate (WACC) | 6.03% | 6.94%
Ecuador [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 49.23% | 44.98%
Average margin on CAPEX | 11.14% | 11.65%
Average pre-tax discount rate (WACC) | 17.50% | 19.85%
Peru [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 38.72% | 32.51%
Average margin on CAPEX | 15.43% | 18.51%
Average pre-tax discount rate (WACC) | 4.76% | 8.86%
El Salvador [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 45.92% | 44.04%
Average margin on CAPEX | 21.19% | 25.03%
Average pre-tax discount rate (WACC) | 14.63% | 16.05%
Chile [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 26.34% | 26.85%
Average margin on CAPEX | 13.18% | 18.00%
Average pre-tax discount rate (WACC) | 3.37% | 4.16%
Colombia [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 43.45% | 45.58%
Average margin on CAPEX | 18.19% | 19.25%
Average pre-tax discount rate (WACC) | 6.44% | 17.27%
Bottom of range [member] | Europe [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 32.20% | 29.40%
Average margin on CAPEX | 7.04% | 10.90%
Average pre-tax discount rate (WACC) | 3.88% | 5.77%
Bottom of range [member] | Other countries [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 10.07% | 7.40%
Average margin on CAPEX | 0.48% | 0.57%
Average pre-tax discount rate (WACC) | 3.42% | 6.41%
Top of range [member] | Europe [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 40.76% | 44.50%
Average margin on CAPEX | 19.39% | 19.30%
Average pre-tax discount rate (WACC) | 12.02% | 14.96%
Top of range [member] | Other countries [member] |  |
Disclosure of impairment of assets [line items] |  |
Average margin on EBIDTA | 47.23% | 52.40%
Average margin on CAPEX | 31.67% | 31.00%
Average pre-tax discount rate (WACC) | 21.85% | 34.75%

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