v3.26.1
Employee Benefits - Summary of Additional Fair value Disclosure About Plan Assets and Indicate Their Rank (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of fair value of plan assets [line items]      
Cash and cash equivalents $ 2,506,395 $ 113,020  
Debt instruments 2,243,958 2,080,727  
Plan Assets      
Disclosure of fair value of plan assets [line items]      
Cash and cash equivalents 2,506,395 113,020  
Debt instruments 2,243,958 2,080,727  
Total 4,750,353 2,193,747 $ 2,176,432
Quoted prices in active markets for identical assets (level 1)      
Disclosure of fair value of plan assets [line items]      
Cash and cash equivalents 2,506,395 113,020  
Debt instruments 2,243,958 2,080,727  
Quoted prices in active markets for identical assets (level 1) | Plan Assets      
Disclosure of fair value of plan assets [line items]      
Total 4,750,353 2,193,747  
Significant observable inputs (level 2)      
Disclosure of fair value of plan assets [line items]      
Cash and cash equivalents 0 0  
Debt instruments 0 0  
Significant observable inputs (level 2) | Plan Assets      
Disclosure of fair value of plan assets [line items]      
Total 0 0  
Significant unobservable inputs (level 3)      
Disclosure of fair value of plan assets [line items]      
Cash and cash equivalents 0 0  
Debt instruments 0 0  
Significant unobservable inputs (level 3) | Plan Assets      
Disclosure of fair value of plan assets [line items]      
Total $ 0 $ 0