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Investment in associate - Schedule of Net Results of SCL Comprised (Detail) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure Of Significant Investments In Associates [Line Items]      
Net (loss) profit SCL $ 4,731,081 $ 3,353,559 $ 2,770,777
SCL Terminal Aerea De Santiago S. A. [Member]      
Disclosure Of Significant Investments In Associates [Line Items]      
Net (loss) profit SCL $ 19,330 $ (79,401) $ (92,783)
Percentage of stake by the company 14.77% 14.77% 14.77%
Share of (loss) profit of associate. $ 2,855 $ (11,728) $ (13,704)