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Financial Instruments - Summary of Net Effects of Expired Contracts Met Hedging Criteria (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of net effects of expired contracts that met hedging criteria [line items]      
Interest Expense $ (7,102) $ (6,500) $ (6,192)
Foreign exchange (1,046) (324) 227
Derivatives designated as hedges | Cross currency swaps and interest rate swaps      
Disclosure of net effects of expired contracts that met hedging criteria [line items]      
Interest Expense (392) (1) 0
Foreign exchange (747) (5) 0
Derivatives designated as hedges | Forward agreements to purchase foreign currency      
Disclosure of net effects of expired contracts that met hedging criteria [line items]      
Net Effect Of Expired Contracts That Met Hedging Criteria On Cost Of Good Sold (1,834) (681) (788)
Derivatives designated as hedges | Commodity price contracts      
Disclosure of net effects of expired contracts that met hedging criteria [line items]      
Net Effect Of Expired Contracts That Met Hedging Criteria On Cost Of Good Sold $ 430 $ 614 $ 1,245