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Financial Risk Management - Summary of Sensitivity Analysis of the Company Financial Assets and Liabilities (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2019
MXN ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
MXN ($)
Dec. 31, 2017
MXN ($)
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets   $ 239,665    
Financial liabilities $ (735,729) (274,552) $ (730,361) $ (784,533)
Net liability position   (34,887)    
Accounts payable [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (1,215,264) (39,105) (1,181,049) (1,075,996)
Bank loans [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities   (235,447)    
Cash and Cash Equivalents [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 7,500,193 219,755 6,151,457 7,730,143
Trade Accounts Receivables [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 1,479,410 $ 19,910 $ 1,395,362 $ 997,370
Peso amounts at exchange rate of Ps. 19.7354 [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 4,516,540      
Financial liabilities (5,173,991)      
Net liability position (657,451)      
Peso amounts at exchange rate of Ps. 19.7354 [Member] | Accounts payable [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (736,948)      
Peso amounts at exchange rate of Ps. 19.7354 [Member] | Bank loans [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (4,437,043)      
Peso amounts at exchange rate of Ps. 19.7354 [Member] | Cash and Cash Equivalents [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 4,141,336      
Peso amounts at exchange rate of Ps. 19.7354 [Member] | Trade Accounts Receivables [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 375,204      
Exchange rate would depreciate 10% [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 4,105,945      
Financial liabilities (4,703,628)      
Net liability position (597,683)      
Exchange rate would depreciate 10% [Member] | Accounts payable [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (669,953)      
Exchange rate would depreciate 10% [Member] | Bank loans [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (4,033,675)      
Exchange rate would depreciate 10% [Member] | Cash and Cash Equivalents [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 3,764,850      
Exchange rate would depreciate 10% [Member] | Trade Accounts Receivables [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 341,095      
Exchange rate would appreciate 10% [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 4,968,194      
Financial liabilities (5,691,390)      
Net liability position (723,196)      
Exchange rate would appreciate 10% [Member] | Accounts payable [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (810,643)      
Exchange rate would appreciate 10% [Member] | Bank loans [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial liabilities (4,880,747)      
Exchange rate would appreciate 10% [Member] | Cash and Cash Equivalents [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets 4,555,469      
Exchange rate would appreciate 10% [Member] | Trade Accounts Receivables [Member]        
Disclosure Of Financial Assets And Liabilities Exchange Rate [Line Items]        
Financial assets $ 412,725