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v3.20.1

Activities of the Company - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2019
Series L Ordinary Shares [Member] |
Disclosure of Parent Entity Information [line items] |
Percentage of ownership | 15.60%
Series B Share [Member] |
Disclosure of Parent Entity Information [line items] |
Percentage of ownership | 9.40%
Fomento Economico Mexicano S.A.B. de C.V. [member] |
Disclosure of Parent Entity Information [line items] |
Percentage of ownership | 47.20%
Percentage of voting rights | 56.00%
The Coca-Cola Company [member] |
Disclosure of Parent Entity Information [line items] |
Percentage of ownership | 27.80%
Percentage of voting rights | 32.90%

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