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Equity Accounted Investees, Other Investments and Non-Current Accounts Receivable - Summary of Other Investments and Non-current Accounts Receivable (Parenthetical) (Detail) - MXN ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of subsidiaries [line items]      
Advances to suppliers of fixed assets $ 43,000,000 $ 52,000,000  
Contributions to private funds $ 0 0  
Costa Rica [member]      
Disclosure of subsidiaries [line items]      
Non-current accounts receivable   $ 21,000,000  
Egypt [member]      
Disclosure of subsidiaries [line items]      
Non-current accounts receivable     $ 71,000,000
Colombia [member]      
Disclosure of subsidiaries [line items]      
Non-current accounts receivable     $ 22,000,000