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Financial Risk Management - Summary of Variable Interest Rates to the Company is Exposed had been 100 Basis Points (Higher) or Lower Than the Interest Rate (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure Of Financia Liabilities Variable Rate [Line Items]      
Variable rate long term debt $ 4,110,846 $ 4,529,518 $ 421,363
Effect in case of interest rate increase in 100 basis points [Member]      
Disclosure Of Financia Liabilities Variable Rate [Line Items]      
Variable rate long term debt (112,134) (64,031) (40,370)
Effect in case of interest rate decrease in 100 basis points [Member]      
Disclosure Of Financia Liabilities Variable Rate [Line Items]      
Variable rate long term debt $ 112,134 $ 64,031 $ 40,370