v3.26.1
Subsequent Events (Details)
$ / shares in Units, $ in Millions, $ in Millions
 12 Months Ended
Mar. 27, 2026
$ / shares
Mar. 23, 2026
MXN ($)
$ / shares
Feb. 12, 2026
MXN ($)
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
MXN ($)
$ / shares
Dec. 31, 2023
$ / shares
Mar. 23, 2026
USD ($)
Mar. 23, 2026
MXN ($)
Mar. 12, 2026
Feb. 20, 2026
MXN ($)
Dec. 31, 2025
MXN ($)
Disclosure of non-adjusting events after reporting period [line items]                      
Market for a total | $         $ 67,218.0           $ 76,500.0
Total amount of final settlement       $ 4,685 [1] $ 83,629.0           $ 84,370.0
“D”                      
Disclosure of non-adjusting events after reporting period [line items]                      
Dividend declared (in pesos per share)       $ 0.95470 $ 0.91610 $ 0.76340          
“B”                      
Disclosure of non-adjusting events after reporting period [line items]                      
Dividend declared (in pesos per share)       $ 0.76380 $ 0.73290 $ 0.61070          
Dividend Transactions                      
Disclosure of non-adjusting events after reporting period [line items]                      
Market for a total | $     $ 10,000.0                
Fixed-rate notes                 19.00%    
Bonds issued | $                   $ 500.0  
Repurchase of financial institution an aggregate amount             $ 300 $ 2.5      
Average share price (in pesos per share)   $ 104.41                  
Total amount of final settlement | $             $ 260        
Contemplates an initial delivery | $   $ 591,774.0                  
Dividend Transactions | “D”                      
Disclosure of non-adjusting events after reporting period [line items]                      
Ordinary cash dividend (in pesos per share) $ 0.2475                    
Dividend declared (in pesos per share) 0.41975                    
Dividend Transactions | “B”                      
Disclosure of non-adjusting events after reporting period [line items]                      
Ordinary cash dividend (in pesos per share) 0.1980                    
Dividend declared (in pesos per share) 0.335825                    
Dividend Transactions | “BD” Units                      
Disclosure of non-adjusting events after reporting period [line items]                      
Ordinary cash dividend (in pesos per share) 4.7520                    
Dividend declared (in pesos per share) 8.0597                    
Dividend Transactions | American Depositary Shares                      
Disclosure of non-adjusting events after reporting period [line items]                      
Ordinary cash dividend (in pesos per share) 47.520                    
Dividend declared (in pesos per share) 80.597                    
Dividend Transactions | “B” Units                      
Disclosure of non-adjusting events after reporting period [line items]                      
Ordinary cash dividend (in pesos per share) 3.9600                    
Dividend declared (in pesos per share) $ 6.7165                    
Dividend Transactions | Nine Point One Two Percentage Debt Bonds                      
Disclosure of non-adjusting events after reporting period [line items]                      
Market for a total | $     $ 7,000.0                
Fixed-rate notes     9.12%                
Maturity     10-year                
Dividend Transactions | TIIE Plus Zero Point Three Eight Percentage Debt Bonds                      
Disclosure of non-adjusting events after reporting period [line items]                      
Market for a total | $     $ 3,000.0                
Fixed-rate notes     0.38%                
Maturity     3-year                
[1] Convenience translation to U.S. dollars ($) – See Note 2.2.4