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Intangible Assets, Net and Goodwill - Summary of Aggregate Carrying Amount of Goodwill (Detail)
$ in Thousands, $ in Millions
Dec. 31, 2023
MXN ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
MXN ($)
Dec. 31, 2021
MXN ($)
Disclosure of carrying value of goodwill [line items]        
Goodwill $ 146,078,897 $ 8,647 $ 141,121,365 $ 136,578,194
Europe [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 55,414,076   49,465,916  
Brazil [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 29,437,800   31,085,202  
Puerto Rico [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 17,463,394   17,463,394  
Dominican Republic [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 14,186,723   14,186,723  
Colombia [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 9,304,613   8,495,090  
Mexico [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 9,186,415   9,233,694  
Peru [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 2,448,614   2,523,467  
El Salvador [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 2,522,768   2,522,768  
Ecuador [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 2,155,384   2,155,384  
Guatemala [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill 2,212,615   2,245,161  
Other countries [member]        
Disclosure of carrying value of goodwill [line items]        
Goodwill $ 1,746,495   $ 1,744,566