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Investment in associate - Schedule of Condensed Statements of Financial Position (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Disclosure Of Significant Investments In Associates [Line Items]        
Current assets $ 8,980,159 $ 5,998,574 $ 3,386,683  
Total 39,517,532 36,051,462 31,473,399  
Total liabilities 17,440,763 13,646,893 9,317,356  
Shareholders´ equity 22,076,769 22,404,569 22,156,043 $ 21,285,891
SCL Terminal Aerea De Santiago S. A. [Member]        
Disclosure Of Significant Investments In Associates [Line Items]        
Current assets 142,672 344,243 411,465  
Non – current assets   50,412 281,943  
Total 142,672 394,655 693,408  
Total liabilities 51,189 193,554 193,476  
Shareholders´ equity $ 91,483 $ 201,101 $ 499,932