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Presentation of Financial Statements and Summary of Significant Accounting Policies - Summary of Foreign Subsidiaries (Detail) | 12 Months Ended
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Dec. 31, 2020
Oxiteno Mexico S.A. de C.V. [member] |
Disclosure of foreign subsidiaries [line items] |
Functional currency | Mexican Peso
Location | Mexico
Oxiteno servicios corporativos S.A. de C.V.[member] |
Disclosure of foreign subsidiaries [line items] |
Functional currency | Mexican Peso
Location | Mexico
Oxiteno servicios industriales S.A. de C.V.[member] |
Disclosure of foreign subsidiaries [line items] |
Functional currency | Mexican Peso
Location | Mexico
Oxiteno USA LLC [member] |
Disclosure of foreign subsidiaries [line items] |
Functional currency | U.S. Dollar
Location | United States
Oxiteno Uruguay [member] |
Disclosure of foreign subsidiaries [line items] |
Functional currency | U.S. Dollar
Location | Uruguay

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