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Equity - Dividends Declared and Paid (Details) - MXN ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of classes of share capital [line items]      
Dividend declared and paid $ 7,687 $ 10,360 $ 9,692
Repurchased shares $ 0 $ 0  
Series B shares.      
Disclosure of classes of share capital [line items]      
Dividend declared and paid per share $ 0.38333 $ 0.51667 $ 0.48333
Series D shares.      
Disclosure of classes of share capital [line items]      
Dividend declared and paid per share $ 0.47917 $ 0.64583 $ 0.60417
Coca-Cola FEMSA      
Disclosure of classes of share capital [line items]      
Dividend declared and paid $ 10,588 $ 10,210 $ 7,437