v3.26.1
Post-employment Benefits - Changes in net post-employment (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Post-employment pension plans.    
Beginning of year $ 772,482 $ 733,049
Retirement of spun-off businesses 23,403 (84,067)
Net periodic cost 141,393 135,731
Benefits paid (71,737) (75,010)
End of year 954,248 772,482
Pensions    
Post-employment pension plans.    
Beginning of year 172,493  
Retirement of spun-off businesses 23,286  
Net periodic cost 35,934  
Remeasurement adjustments 27,412 (10,297)
Benefits paid (46,460)  
End of year 212,665 172,493
Seniority Premiums    
Post-employment pension plans.    
Beginning of year 599,989  
Retirement of spun-off businesses 117  
Net periodic cost 105,459  
Remeasurement adjustments 61,295 73,076
Benefits paid (25,277)  
End of year $ 741,583 $ 599,989