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Property, Machinery and Equipment, Net - Summary of Recognized Impairment Losses (Detail) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses $ 984 $ 1,899 $ 1,145
Spain [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 452 0 392
Czech Republic [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 157 0 0
United States [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 153 277 269
Panama [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 56 0 118
France [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 50 0 0
Latvia [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 46 0 126
Mexico [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 45 46 46
Puerto Rico [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 0 1,087 172
Colombia [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses 0 454 0
Other countries [member]      
Disclosure of impairment loss and reversal of impairment loss [line items]      
Impairment losses $ 25 $ 35 $ 22