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Contingencies - Additional Information (Detail)
€ in Millions, R$ in Millions, $ in Millions, $ in Billions
 12 Months Ended
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2021
BRL (R$)
shares
Dec. 31, 2021
AUD ($)
shares
Dec. 31, 2021
EUR (€)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Jan. 24, 2019
USD ($)
Jan. 24, 2019
EUR (€)
Disclosure of detailed information about material tax [line items]                
Exposure to credit risk $ 18,258       $ 21,598      
Provisions recorded $ 605       $ 763 $ 911    
Number of shares issued | shares 1,972,000,000 1,972,000,000 1,972,000,000 1,972,000,000 1,959,000,000 1,957,000,000    
Disallowance Of Tax Paid Abroad [Member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss $ 2,000 R$ 11,300            
Deductibility Of IOC Expenses [Member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 1,900 10,500            
Grupo Modelo Tax Matters [Member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss     $ 0.4          
Interest Deduction On SAB Acquistions [Member]                
Disclosure of detailed information about material tax [line items]                
Tax assessment amount 300              
Provisions recorded 100              
Income taxes paid (refund), classified as financing activities 47              
Ambev [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss $ 900 R$ 4,900            
Ambev [member] | Legal proceedings contingent liability [member]                
Disclosure of detailed information about material tax [line items]                
Number of shares issued | shares 172,831,574 172,831,574 172,831,574 172,831,574        
Percentage of shares issued diluted 1.00%              
Arosuco [member] | Disallowance Of Tax Paid Abroad [Member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss $ 400 R$ 2,100            
Tax Assessment During 2005 [member] | Foreign subsidiaries [member] | In Bev Holding Brasil SA [member]                
Disclosure of detailed information about material tax [line items]                
Exposure to credit risk 1,300 7,500            
Tax Assessment During 2005 [member] | Ambev [member] | In Bev Holding Brasil SA [member]                
Disclosure of detailed information about material tax [line items]                
Provisions recorded 10 54            
Tax Assessment During 2005 [member] | Ambev [member] | Foreign subsidiaries [member] | In Bev Holding Brasil SA [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 900 5,000            
Tax Assessment in December 2011 [member] | Ambev [member] | In Bev Holding Brasil SA [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 1,900 10,400            
Tax Assessment in December 2011 [member] | Ambev [member] | In Bev Holding Brasil SA [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 200 1,000            
Tax Assessment in December 2011 [member] | Ambev [member] | CERVECERIA NACIONAL DOMINICANA S.A. [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 200 900            
Tax assessment in October 2013 [member] | Ambev [member] | Beverage Associates Holding Limited [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 400 2,300            
Tax Assessment in 2014 and 2015 [member] | Ambev [member] | IPI excise tax [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 300 1,600            
Tax Assessment in December 2015 [member] | Ambev [member] | Integration program social security financing levy [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 300 1,800            
Rio de Janeiro [member] | Arosuco [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 100 500            
Minas Gerais [member] | Ambev [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 1,500 8,400            
State Of Pernambuco [member] | Ambev [member]                
Disclosure of detailed information about material tax [line items]                
Estimate of possible loss 400 R$ 2,000            
Blocked account [member]                
Disclosure of detailed information about material tax [line items]                
Provisions recorded $ 77     € 68        
Deposits             $ 77 € 68