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Operating segments (Details)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
segment
Dec. 31, 2021
MXN ($)
segment
Dec. 31, 2020
MXN ($)
Dec. 31, 2019
MXN ($)
Operating segments        
Number of geographic segments | segment 2 2    
Total operating revenues $ 2,169,803 $ 44,662,139 $ 22,159,591 $ 34,752,672
Non-derivatives financial instruments $ (21,110) (434,522) (411,222) (72,949)
Domestic (Mexico)        
Operating segments        
Total operating revenues   33,754,354 16,572,198 24,594,797
United States of America and Central America        
Operating segments        
Total operating revenues   11,342,307 $ 5,998,615 $ 10,230,824
United States of America        
Operating segments        
Total operating revenues   $ 5,343,692