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Investments in Other Entities - Additional Information (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Sep. 30, 2020
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of associates and joint ventures [line items]        
Impairment of investments   $ 143 $ 0 $ 250
Joint Ventures        
Disclosure of associates and joint ventures [line items]        
Equity earnings (loss) recognized   190 192 3
Promotora Mexicana de Embotelladores, S.A. de C.V. (PIASA)        
Disclosure of associates and joint ventures [line items]        
Dividend income   79    
Jugos del valle, S.A.P.I. de C.V.        
Disclosure of associates and joint ventures [line items]        
Capital contribution   466   44
Expense of restructuring activities   24    
Alimentos de Soja S.A.U        
Disclosure of associates and joint ventures [line items]        
Impairment of investments   143    
Planta Nueva Ecología De Tabasco, S.A. de C.V.        
Disclosure of associates and joint ventures [line items]        
Capital contribution   506 560  
Industria Envasadora de Quertaro, S.A. de C.V. (IEQSA)        
Disclosure of associates and joint ventures [line items]        
Dividend income     16  
Leao Alimentos y Bebidas LTDA        
Disclosure of associates and joint ventures [line items]        
Reduction of issued capital       46
Trop Frutas do Brasil, LTDA.        
Disclosure of associates and joint ventures [line items]        
Impairment of investments       250
Compañía Panameña de Bebidas, S.A.P.I. de C.V.        
Disclosure of associates and joint ventures [line items]        
Percentage of stock sold 100.00%      
Associates        
Disclosure of associates and joint ventures [line items]        
Equity earnings (loss) recognized   $ 25 $ 194 $ 85