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Balances and Transactions in Foreign Currencies - Summary of Transactions Denominated in Foreign Currencies, Expressed in Mexican pesos (Detail)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2023
MXN ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
MXN ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2021
MXN ($)
Disclosure of Balances and Transactions in Foreign Currencies [line items]            
Total revenues   $ 245,088   $ 226,740   $ 194,804
Interest Expense   $ 7,102   $ 6,500   $ 6,192
U.S. Dollar            
Disclosure of Balances and Transactions in Foreign Currencies [line items]            
Total revenues $ 1,468   $ 830   $ 452  
Purchases of Raw Materials 18,075   17,285   14,420  
Interest Expense 1,257   1,148   1,749  
Other $ 4,065   $ 2,973   $ 2,509