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Accounts receivable - Net: (Details 1) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2016
Allowance account for credit losses of financial assets $ 179,639 $ 173,398   $ 179,639 $ 173,398  
Allowance account for credit losses of financial assets 179,639 173,398        
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets 128,000          
Trade receivables [member]            
Allowance account for credit losses of financial assets   173,398     173,398 $ 128,221
Allowance account for credit losses of financial assets   173,398        
Utilisation, allowance account for credit losses of financial assets (35,403) 36,621 $ (510)      
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets 20,128 6,690        
Utilisation Of valuation Provision Due To Adoption Of IFRS 9 18,284          
Trade receivables [member] | Airplan [Member]            
Additional allowance recognised in profit or loss, allowance account for credit losses of financial assets $ 3,232 2,376        
Trade receivables [member] | Financial assets past due but not impaired [member]            
Current trade receivables       $ 275,490 192,805  
Trade receivables [member] | Not later than three months [member]            
Current trade receivables         137,155  
Trade receivables [member] | Later than three months and not later than six months [member]            
Current trade receivables         71,049  
Trade receivables [member] | Later than six months and not later than one year [member]            
Current trade receivables         157,999  
Trade receivables [member] | Current [member]            
Current trade receivables         366,203  
Allowance account for credit losses of financial assets   173,398     $ 173,398  
Allowance account for credit losses of financial assets   $ 173,398