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Information by Segment - Summary of Geographic Disclosure (Parenthetical) (Detail) - MXN ($)
Dec. 31, 2018
Dec. 31, 2017
Disclosure of geographical areas [line items]    
Total Non Current Assets $ 398,774,000,000 $ 407,353,000,000
Mexico [member]    
Disclosure of geographical areas [line items]    
Total Non Current Assets 185,857,000,000 170,547,000,000
Brazil [member]    
Disclosure of geographical areas [line items]    
Total Non Current Assets 76,869 89,137
Colombia [member]    
Disclosure of geographical areas [line items]    
Total Non Current Assets 16,664 18,396
Argentina [member]    
Disclosure of geographical areas [line items]    
Total Non Current Assets 4,538 3,052
Chile [member]    
Disclosure of geographical areas [line items]    
Total Non Current Assets 16,787 $ 19,590
Uruguay [member]    
Disclosure of geographical areas [line items]    
Total Non Current Assets $ 5,145