v3.26.1
Financial Instruments - Interest Rate Swaps (Details) - MXN ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount $ 76,500 $ 67,218
2028    
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount 9,043  
2026    
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount 5,541  
2031 and thereafter    
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount 45,620  
Interest rate swaps | 2028    
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount 2,278  
Fair value Liability (29)  
Fair Value Asset 0  
Interest rate swaps | 2026    
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount   2,339
Fair value Liability   0
Fair Value Asset   1
Interest rate swaps | 2031 and thereafter    
Disclosure of Financial Assets and Financial Liabilities [Line Items]    
Notional Amount 8,983 10,134
Fair value Liability 1,200 1,784
Fair Value Asset $ 0 $ 0