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Cash and Cash Equivalents - Additional Information (Detail)
$ in Millions, $ in Millions
Dec. 31, 2018
MXN ($)
Dec. 31, 2018
USD ($)
 [1]
Dec. 31, 2017
MXN ($)
Dec. 31, 2017
USD ($)
 [1]
Dec. 31, 2016
MXN ($)
 [2]
Dec. 31, 2015
MXN ($)
Cash and cash equivalents1 [line items]            
Cash and cash equivalents $ 62,047 $ 3,160 $ 96,944 [2] $ 4,937 $ 43,637 $ 29,396
Venezuela [member]            
Cash and cash equivalents1 [line items]            
Cash and cash equivalents     $ 170      
[1] Convenience translation to U.S. dollars ($) - See Note 2.2.3
[2] Revised to reflect the discontinued Philippines operations of Coca-Cola FEMSA - See Note 4.2.1