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Cost of Services - Summary of Cost of Services (Detail) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cost Of Service [Abstract]      
Employee cost (Note 24) $ 773,630 $ 663,360 $ 584,560
Maintenance 528,929 505,352 346,805
Safety, security and insurance 386,079 317,023 282,310
Utilities 334,994 278,895 222,891
Other 430,090 345,777 345,805
Cost of services $ 2,453,722 $ 2,110,407 $ 1,782,371