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Equity Accounted Investees - Reconciliation from Equity of Associate to Investment of Company (Detail)
€ in Millions, $ in Millions
12 Months Ended
Apr. 30, 2010
Dec. 31, 2019
MXN ($)
Dec. 31, 2018
MXN ($)
Dec. 31, 2019
EUR (€)
Dec. 31, 2018
EUR (€)
Disclosure of associates and joint ventures [line items]          
Economic ownership percentage   14.80% 14.80%    
Goodwill   $ 0      
Heineken [member]          
Disclosure of associates and joint ventures [line items]          
Equity attributable to equity holders of Heineken   $ 341,062 $ 323,608 € 16,147 € 14,358
Economic ownership percentage 20.00% 14.76% 14.76%    
Investment in Heineken investment exclusive of goodwill and other adjustments   $ 50,341 $ 47,765 2,383 2,119
Effects of fair value determined by purchase price allocation   14,839 15,846 703 703
Goodwill   18,609 19,850 881 881
Heineken investment   $ 83,789 $ 83,461 € 3,967 € 3,703