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Balances and Transactions with Related Parties and Affiliated Companies - Commitments (Details) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of transactions between related parties [line items]      
Commitment Supply    
Conditions Supply of all beer products in Mexico’s OXXO stores. The contract may be renewed for five years or additional periods. At the end of the contract OXXO will not hold an exclusive contract with another supplier of beer for the next 3 years. Commitment term, January 1st, 2010 to June 30, 2020.    
Short-term employee benefits paid $ 1,934 $ 2,112 $ 2,163
Postemployment benefits 52 45 48
Termination benefits 36 373 411
Share based payments $ 853 $ 575 $ 610
Heineken Group      
Disclosure of transactions between related parties [line items]      
Renewal option for supply contract 5 years    
Restriction period from holding exclusive contract with another supplier at the end of the contract term 3 years