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Derivative financial instruments
 12 Months Ended
Dec. 31, 2025
Derivative financial instruments [Abstract]  
Derivative financial instruments
Note 7. Derivative financial instruments
 
In an attempt to mitigate the risks of future increases in interest rates and foreign exchange rates for the servicing of its debt, the Company has entered into derivative contracts in over-the-counter transactions carried out with financial institutions. In 2025 the weighted-average interest rate of the total debt including the impact of interest rate derivatives held by the Company is 5.7% (5.8% and 5.6% in 2024 and 2023, respectively).

An analysis of the derivative financial instruments contracted by the Company at December 31, 2024 and 2025 is as follows:

   
At December 31,
  
   
2024
    
2025
  
Instrument
  
Notional amount in
millions
    
Fair Value
    
Notional amount in
millions
    
Fair Value
  
Assets:
                        
XCS US Dollar – Mexican Peso
   US$ 2,700    
Ps.
 8,538,837    
US$
1,700    
Ps.
 1,891,249  
XCS Mexican Peso – US Dollar
     -       -     MXN$ 2,018       249,617  
XCS US Dollar – Euro
   US$ 800      
582,620
    

-      
-
  
XCS US Dollar – Chilean Peso
   US$
400
      
1,529,257
    

-      
-
  
Interest Rate Swaps US Dollar – Chilean Peso
   US$ 392       5,373    

-      
-
  
Interest Rate Swaps Chilean Peso – US Dollar
   CLP$ 306,554       12,372    

-      
-
  
Forwards Brazilian Real – US Dollar
  
-
      
-
     R$
5,843
      
159,834
  
Forwards Euro – US Dollar
  

-
      
-
    
€
681
      
116,310
  
Total Assets
          
Ps.
 10,668,460            
Ps.
2,417,009  

 
At December 31,
  
 
2024
  
2025
  
Instrument
 
Notional amount in
millions
  
Fair Value
  
Notional amount in
millions
  
Fair Value
  
Liabilities:
                
XCS US Dollar – Mexican Peso
US$ 2,190  
Ps. (4,076,647 )
US$ 3,190  
Ps. (4,314,948 )
XCS Mexican Peso – US Dollar
MXN$
8,094
      
(254,549
)
  -      
-
  
XCS US Dollar – Euro
US$
 150      
(158,661
)
US$ 950      
(1,038,355
)
XCS Yen – US Dollar
  
¥
13,000
      
(493,179
)
  
¥
13,000
      
(617,460
)
XCS Pound Sterling – Euro
  
£
640
      
(1,259,750
)
  
£
640
      
(1,685,044
)
XCS Pound Sterling – US Dollar
  
£
1,560
      
(11,184,561
)
  
£
1,560
      
(7,543,817
)
XCS Euro – US Dollar
  
€
802
      
(2,793,689
)
  
€
802
      
(858,748
)
Interest Rate Swaps US Dollar – Chilean Peso
US$ 385       (19,872 )
US$ 385      
(27,862
)
Interest Rate Swaps Chilean Peso – US Dollar
CLP$ 384,948       (12,613 )
CLP$ 306,554      
(26,305
)
Forwards US Dollar – Mexican Peso
  -      
-
  
US$
100
      
(12,620
)
Forwards Brazilian Real – US Dollar
R$
6,155
      
(1,401,460
)
 
-
      
-
  
Forwards Euro – US Dollar
  
€
1,036
      
(530,728
)
  
€
108
      
(7,023
)
Total Liabilities
    
 
Ps. (22,185,709 )    

 
Ps. (16,132,182 )

*Totals may not sum due to rounding
**XCS stands for Cross Currency Swaps

The changes in the fair value of these derivative financial instruments for the years ended December 31, 2023, 2024 and 2025  were equivalent to a loss of Ps.(10,268,520), Ps.(2,141,802) and Ps.(697,393), respectively. Such amounts are included in the consolidated statements of comprehensive income as part of the caption “Valuation of derivatives interest cost from labor obligations and other financial items, net”. See Note 22.

The maturities of the notional amount of the derivatives are as follows:

Instrument
  
Notional
amount in
millions
    
2026
    
2027
    
2028
    
2029
    
2030
Thereafter
  
Assets
                                     
XCS US Dollar – Mexican Peso
    
US$
      
-
      
-
      
-
      
1,000
      
700
  
XCS Mexican Peso – US Dollar
    
MXN$
       -


-


-


2,018


-  
Forwards Brazilian Real – US Dollar
    
R$
       5,843


-


-


-


-  
Forwards Euro – US Dollar
    
€
      681


-


-


-


-  
                                                 
Liabilities
                                                
XCS US Dollar – Mexican Peso
    
US$
      
-
      
-
      
-
      
-
      
3,190
  
XCS US Dollar - Euro
    
US$
      
-
      
-
      
-
      
-
      
950
  
XCS Euro – US Dollar
    
€
   

-
      
402
      
400
      
-
      
-
  
XCS Yen – US Dollar
     ¥
   

-
      
-
      
-
      
-
      
13,000
  
XCS Sterling Pound – Euro
     £
   

390
      
-
      
-
      
-
      
250
XCS Sterling Pound – US Dollar
     £
   

110
      
-
      
-
      
-
      
1,450
  
Interest Rate Swaps US Dollar – Chilean Peso
    
US$
      
385
      
-
      
-
      
-
      
-
  
Interest Rate Swaps Chilean Peso – US Dollar
    
CLP$
      
306,554
      
-
      
-
      
-
      
-
  
Forwards Euro – US Dollar
     €
   

108
      
-
      
-
      
-
      
-
  
Forwards US Dollar – Mexican Peso
    
US$
       100
       -
       -
       -
       -