v3.25.1
Post-employment Benefits - Fair value of plan assets (Details) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Post-employment pension plans.    
Beginning of year $ (733,049) $ (771,468)
Retirement of spun-off businesses (84,067)  
Return on plan assets 35,596 40,646
Remeasurement on plan assets (62,779) 83,935
Benefits paid 75,010 42,141
End of year (772,482) (733,049)
Pensions    
Post-employment pension plans.    
Beginning of year (243,131)  
Retirement of spun-off businesses (64,142)  
Remeasurement on plan assets 10,297  
Benefits paid 40,360  
End of year (172,493) (243,131)
Seniority Premiums    
Post-employment pension plans.    
Beginning of year (489,918)  
Retirement of spun-off businesses (19,925)  
Remeasurement on plan assets (73,076)  
Benefits paid 34,650  
End of year (599,989) (489,918)
Plan assets    
Post-employment pension plans.    
Beginning of year 474,479 505,765
Retirement of spun-off businesses (1,888)  
Return on plan assets 35,596 40,646
Remeasurement on plan assets 7,310 (40,429)
Benefits paid (83,515) (31,503)
End of year 431,982 474,479
Plan assets | Pensions    
Post-employment pension plans.    
Beginning of year 436,091  
Retirement of spun-off businesses (907)  
Return on plan assets 32,003  
Remeasurement on plan assets 5,573  
Benefits paid (83,057)  
End of year 389,703 436,091
Plan assets | Seniority Premiums    
Post-employment pension plans.    
Beginning of year 38,388  
Retirement of spun-off businesses (981)  
Return on plan assets 3,593  
Remeasurement on plan assets 1,737  
Benefits paid (458)  
End of year $ 42,279 $ 38,388