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v3.21.1

Employee Benefits - Schedule of Plan Assets Invested (Detail) | Dec. 31, 2020 | Dec. 31, 2019
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Puerto Rico [member] |  |
Disclosure of fair value of plan assets [line items] |  |
Equity instruments | 43.00% | 41.00%
Debt instruments | 22.00% | 58.00%
Others | 35.00% | 1.00%
Total | 100.00% | 100.00%
Brazil [member] |  |
Disclosure of fair value of plan assets [line items] |  |
Debt instruments | 95.00% | 94.00%
Others | 5.00% | 6.00%
Total | 100.00% | 100.00%
Mexico [member] |  |
Disclosure of fair value of plan assets [line items] |  |
Equity instruments | 68.00% | 64.00%
Debt instruments | 32.00% | 36.00%
Total | 100.00% | 100.00%

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