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Machinery, Equipment and Improvements on Leased Assets - Summary of Net Balances of Machinery, Equipment and Improvements on Leased Assets (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment $ 1,905,684 $ 1,906,233 $ 1,655,688 $ 1,630,393
Machinery and equipment [Member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment 1,393,985 1,426,828 1,197,349  
Office furniture and equipment [Member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment 196,928 165,061 123,805  
Computer equipment [Member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment 225,984 228,427 251,071  
Transportation equipment [Member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment 25,058 18,236 12,510  
Communication equipment [Member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment 11,637 12,810 13,656  
Improvements on leased assets [Member]        
Disclosure of detailed information about property, plant and equipment [Line Items]        
Property plant and equipment $ 52,092 $ 54,871 $ 57,297