v3.25.1
Financial Instruments - Company's Financial Instruments Used to Hedge Its Exposure to Foreign Exchange Rates, Interest Rates and Commodity Risks (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2024
MXN ($)
$ / T
$ / lb
Dec. 31, 2023
MXN ($)
$ / T
$ / lb
Dec. 31, 2023
USD ($)
$ / T
$ / lb
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 4,702,000,000 $ 96,000,000  
1-6 months | Average exchange rate MXN/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 18.79 18.42  
Asset $ 1,451,000,000 $ 3,045,000,000  
1-6 months | Average exchange rate MXN/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
1-6 months | Average exchange rate MXN/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 19.55    
Asset $ 568,000,000    
1-6 months | Average exchange rate BRL/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 5.50 5.10  
Asset $ 951,000,000 $ 2,486,000,000  
1-6 months | Average exchange rate BRL/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
1-6 months | Average exchange rate BRL/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 5.77    
Asset $ 472,000,000    
1-6 months | Average exchange rate COP/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 4,133.57 4,435.64  
Asset $ 275,000,000 $ 757,000,000  
1-6 months | Average exchange rate COP/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
1-6 months | Average exchange rate COP/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 4,313    
Asset $ 307,000,000    
1-6 months | Average exchange rate ARS/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 1,197.76 668.06  
Asset $ 517,000,000 $ 150,000,000  
1-6 months | Average exchange rate UYU/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 41.59 40.18  
Asset $ 169,000,000 $ 344,000,000  
1-6 months | Average exchange rate CRC/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 531.13 558.89  
Asset $ 240,000,000 $ 154,000,000  
1-6 months | Interest rate swaps | Interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0   $ 0
1-6 months | Aluminum price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 440,000,000 $ 298,000,000  
1-6 months | Average price (USD/Ton) 1 | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) 2,480.15 2,304.43 2,304.43
1-6 months | Diesel price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 11,000,000    
1-6 months | Average Price USD, Per Gallon | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) | $ / T 2.14    
1-6 months | PX+MEG price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 72,000,000    
1-6 months | Average price (USD/Ton) 2 | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) | $ / T 950.00    
1-6 months | Sugar price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 3,476,000,000 $ 1,703,000,000  
1-6 months | Average price (USD cent/Lb) | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) 19.38 22.43 22.43
6-12 months | Average exchange rate MXN/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 20.71 18.40  
Asset $ 126,000,000 $ 1,781,000,000  
6-12 months | Average exchange rate MXN/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
6-12 months | Average exchange rate MXN/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 20.61    
Asset $ 1,127,000,000    
6-12 months | Average exchange rate BRL/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 6.07 5.07  
Asset $ 45,000,000 $ 1,370,000,000  
6-12 months | Average exchange rate BRL/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
6-12 months | Average exchange rate BRL/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 6.04    
Asset $ 928,000,000    
6-12 months | Average exchange rate COP/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 4,163.63 4,316.13  
Asset $ 22,000,000 $ 334,000,000  
6-12 months | Average exchange rate COP/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
6-12 months | Average exchange rate COP/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 4,361.66    
Asset $ 299,000,000    
6-12 months | Average exchange rate ARS/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 1,286 0  
Asset $ 60,000,000 $ 0  
6-12 months | Average exchange rate UYU/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 44.13 40.66  
Asset $ 113,000,000 $ 163,000,000  
6-12 months | Average exchange rate CRC/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 540.05 556.00  
Asset $ 152,000,000 $ 117,000,000  
6-12 months | Interest rate swaps | Interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0   $ 0
6-12 months | Aluminum price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 389,000,000 $ 349,000,000  
6-12 months | Average price (USD/Ton) 1 | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) 2,542.39 2,363.73 2,363.73
6-12 months | Diesel price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 11,000,000    
6-12 months | Average Price USD, Per Gallon | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) | $ / T 2.14    
6-12 months | PX+MEG price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 0    
6-12 months | Average price (USD/Ton) 2 | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) | $ / T 0    
6-12 months | Sugar price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 1,500,000,000 $ 890,000,000  
6-12 months | Average price (USD cent/Lb) | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) 19.14 22.18 22.18
More than 12 | Average exchange rate MXN/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
More than 12 | Average exchange rate MXN/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 19.37 19.37  
Asset $ 14,330,000,000 $ 11,944,000,000  
More than 12 | Average exchange rate MXN/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0    
Asset $ 0    
More than 12 | Average exchange rate BRL/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
More than 12 | Average exchange rate BRL/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 5.05 5.05  
Asset $ 16,823,000,000 $ 14,022,000,000  
More than 12 | Average exchange rate BRL/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0    
Asset $ 0    
More than 12 | Average exchange rate COP/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
More than 12 | Average exchange rate COP/USD | Cross currency swaps and interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 3,550 3,550  
Asset $ 1,184,000,000 $ 987,000,000  
More than 12 | Average exchange rate COP/USD | Foreign exchange currency option contracts      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0    
Asset $ 0    
More than 12 | Average exchange rate ARS/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
More than 12 | Average exchange rate UYU/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
More than 12 | Average exchange rate CRC/USD | Forward agreements to purchase foreign currency      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0 0  
Asset $ 0 $ 0  
More than 12 | Interest rate swaps | Interest rate swaps      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Average exchange rate 0.0016 0.0016  
Asset $ 10,134,000,000   $ 8,447
More than 12 | Aluminum price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 0 $ 0  
More than 12 | Average price (USD/Ton) 1 | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) 0 0 0
More than 12 | Diesel price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 0    
More than 12 | Average Price USD, Per Gallon | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) | $ / T 0    
More than 12 | PX+MEG price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 0    
More than 12 | Average price (USD/Ton) 2 | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) | $ / T 0    
More than 12 | Sugar price contracts | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Asset $ 787,000,000 $ 745,000,000  
More than 12 | Average price (USD cent/Lb) | Notional amount (in millions of pesos)      
Disclosure Of Reasonably Possible Changes To Actuarial Assumptions [line items]      
Commodity risk, average price (in US dollars per ton or pound) 17.94 22.62 22.62