v3.26.1
Financial Instruments - Impact of Hedging on Equity (Details)
$ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
MXN ($)
Dec. 31, 2024
MXN ($)
Dec. 31, 2023
MXN ($)
Disclosure of detailed information about hedged items [line items]        
Beginning balance   $ 381,131 $ 378,369 $ 337,801
Foreign currency revaluation of the net foreign operations $ 0 [1] 0 0 (5,153)
Ending balance $ 18,291 [2] 329,352 381,131 378,369
Equity attributable to equity holders of the parent        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   297,502 303,860 262,604
Ending balance   244,982 297,502 303,860
Non-controlling interest        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   83,629 74,509 75,197
Ending balance   84,370 83,629 74,509
Impact Of Hedging Instruments        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   3,121 956  
Financial instruments – purchases   (676) 278  
Change in fair value of financial instruments recognized in OCI   (9,194) 11,031  
Amount reclassified from OCI to profit or loss   2,195 (4,228)  
Foreign currency revaluation of the net foreign operations   3,491 (5,036)  
Effects of changes in foreign exchange rates   (55) (13)  
Tax effect   1,062 133  
Ending balance   (56) 3,121 956
Impact Of Hedging Instruments | Equity attributable to equity holders of the parent        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   2,536 1,260  
Financial instruments – purchases   (409) (54)  
Change in fair value of financial instruments recognized in OCI   (5,874) 7,082  
Amount reclassified from OCI to profit or loss   1,728 (4,103)  
Foreign currency revaluation of the net foreign operations   1,535 (2,194)  
Effects of changes in foreign exchange rates   (24) (3)  
Tax effect   695 548  
Ending balance   187 2,536 1,260
Impact Of Hedging Instruments | Treasury Lock contracts        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   0 0  
Financial instruments – purchases   7    
Amount reclassified from OCI to profit or loss   (7)    
Ending balance   0 0 0
Impact Of Hedging Instruments | Foreign exchange forward contracts        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   (25) (273)  
Financial instruments – purchases   (176) 41  
Change in fair value of financial instruments recognized in OCI   (403) 345  
Amount reclassified from OCI to profit or loss   150 (45)  
Effects of changes in foreign exchange rates   22 12  
Tax effect   127 (105)  
Ending balance   (305) (25) (273)
Impact Of Hedging Instruments | Foreign currency option        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   64 0  
Financial instruments – purchases   (34) 77  
Change in fair value of financial instruments recognized in OCI   (264) 36  
Amount reclassified from OCI to profit or loss   144 (18)  
Effects of changes in foreign exchange rates   10    
Tax effect   45 (31)  
Ending balance   (35) 64 0
Impact Of Hedging Instruments | Cross-currency swaps        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   2,348 1,225  
Financial instruments – purchases   (219) (261)  
Change in fair value of financial instruments recognized in OCI   (5,064) 6,898  
Amount reclassified from OCI to profit or loss   1,339 (4,039)  
Foreign currency revaluation of the net foreign operations   1,535 (2,194)  
Effects of changes in foreign exchange rates   (37) (14)  
Tax effect   525 733  
Ending balance   427 2,348 1,225
Impact Of Hedging Instruments | Interest rate swaps        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   229 357  
Change in fair value of financial instruments recognized in OCI   (30) (64)  
Tax effect   (8) (64)  
Ending balance   191 229 357
Impact Of Hedging Instruments | Commodity price contracts        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   (80) (48)  
Financial instruments – purchases   13 88  
Change in fair value of financial instruments recognized in OCI   (113) (133)  
Amount reclassified from OCI to profit or loss   102 (1)  
Effects of changes in foreign exchange rates   (19) (1)  
Tax effect   6 15  
Ending balance   (91) (80) (48)
Impact Of Hedging Instruments | Non-controlling interest        
Disclosure of detailed information about hedged items [line items]        
Beginning balance   585 (304)  
Financial instruments – purchases   (267) 332  
Change in fair value of financial instruments recognized in OCI   (3,320) 3,949  
Amount reclassified from OCI to profit or loss   467 (125)  
Foreign currency revaluation of the net foreign operations   1,956 (2,842)  
Effects of changes in foreign exchange rates   (31) (10)  
Tax effect   367 (415)  
Ending balance   $ (243) $ 585 $ (304)
[1] Convenience translation to U.S. dollars ($) – See Note 2.2.4
[2] Convenience translation to U.S. dollars ($) – See Note 2.2.4