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Bonus Programs - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Dec. 31, 2015
MXN ($)
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Description of quantitative, qualitative objectives and special projects of bonus program The quantitative objectives represent approximately 50% of the bonus, and are based on the Economic Value Added ("EVA") methodology. The objective established for the executives at each entity is based on a combination of the EVA generated per entity and by our Company and the EVA generated by our parent Company FEMSA. The qualitative objectives and special projects represent the remaining 50% of the annual bonus and are based on the critical success factors established at the beginning of the year for each executive.    
Bonus expense $ 701 $ 706 $ 549
Vesting requirements, Description The acquired shares or options are deposited in a trust, and the executives may access them one year after they are vested at 33% per year. The 50% of Coca-Cola FEMSA’s annual executive bonus is to be used to purchase FEMSA shares or options and the remaining 50% to purchase Coca-Cola FEMSA shares or options. For the years ended December 31, 2017, 2016, 2015 and 20142015, no stock options have been granted to employees. Until 2015 the shares were vested ratably over a five year period. Beginning with January 1, 2016 onwards they will ratably vest over a three year period.    
Vesting percentage 33.00%    
Number of options granted 0 0 0
The total expense recognized for the period arising from share-based payment transactions $ 174 $ 206 $ 264
Share based payments $ 151 168  
Coca-Cola FEMSA [member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Annual bonus percentage 50.00%    
Share based payments $ 151 $ 168  
FEMSA [member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Annual bonus percentage 50.00%    
Number of options granted 2,380,522