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Mergers and Acquisitions - Additional Information (Detail)
$ / shares in Units, $ in Thousands, shares in Millions, R$ / shares in Millions, R$ in Millions
 1 Months Ended 12 Months Ended
Jan. 25, 2017
Dec. 06, 2016
MXN ($)
$ / shares
shares
Dec. 06, 2016
BRL (R$)
R$ / shares
Jan. 31, 2013
Dec. 31, 2017
MXN ($)
Dec. 06, 2016
MXN ($)
shares
Dec. 06, 2017
MXN ($)
Dec. 31, 2016
MXN ($)
Dec. 06, 2016
BRL (R$)
shares
Disclosure of Detailed Information About Business Combination [Line Items]                  
Name of acquire           Vonpar S.A.      
Goodwill         $ 118,130,000     $ 118,920,000  
Term of of decision making authority       4 years          
Description of control changes in CCFPI Since January 25, 2017, the Company controls CCFPI's as all decisions relating to the day-to-day operation and management of CCFPI's business, including its annual normal operations plan                
Vonpar [member]                  
Disclosure of Detailed Information About Business Combination [Line Items]                  
Date of acquisition           Dec. 06, 2016      
Business acquisition, percentage of voting equity interests acquired   100.00%       100.00%     100.00%
Business acquisition, consideration transferred   $ 20,992,000       $ 20,992,000     R$ 3,508
Business acquisition, cash paid   13,198,000       13,198,000     R$ 1,730
Business acquisition, additionally cash paid   4,124,000 R$ 688            
Business acquisition, capitalized amount   4,082,000              
Equity interests of acquirer   485,000       485,000      
Transaction related costs   35,000              
Goodwill   $ (2,173,000)       $ (2,173,000) $ 1,667,000    
Vonpar [member] | Series L share [member]                  
Disclosure of Detailed Information About Business Combination [Line Items]                  
Shares issued as consideration for business acquisition | shares   27.9       27.9     27.9
Business acquisition, implicit value   $ 146,270       $ 146,270      
Strike price per share | $ / shares   $ 128.88              
Equity interests of acquirer   $ 485,000       485,000      
Vonpar [member] | Promissory notes [member]                  
Disclosure of Detailed Information About Business Combination [Line Items]                  
Remaining balance paid   $ 6,534,000     $ 6,503,000 $ 6,534,000   $ 7,022,000 R$ 1,090
Annual rate   0.375%     0.375% 0.375%     0.375%
Maturity period   Three-year Three-year            
Vonpar [member] | Promissory notes [member] | Series L share [member]                  
Disclosure of Detailed Information About Business Combination [Line Items]                  
Strike price per share | (per share)   $ 178.5 R$ 178.5            
Coca-Cola FEMSA Philippines, Inc. [member]                  
Disclosure of Detailed Information About Business Combination [Line Items]                  
Business acquisition, percentage of voting equity interests acquired       51.00%          
Gain on derecognition of other comnprehensive income recognized in income statement         $ 2,996,000        
Coca-Cola FEMSA Philippines, Inc. [member] | Call Options [member]                  
Disclosure of Detailed Information About Business Combination [Line Items]                  
Percentage of non-controlling interest acquirable       49.00%          
Non-controlling interest acquirable period       7 years