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Goodwill - Additional Information (Detail) - USD ($)
$ in Billions
 3 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2021
Disclosure of reconciliation of changes in goodwill [line items]    
Cost to sell expected to reach as percentage of entity value   2.00%
Adverse change in WACC   1.00%
Non cash goodwill impairment charge $ 2.5  
Probability of worst case scenario    
Disclosure of reconciliation of changes in goodwill [line items]    
Percentage of probability of occurrence of the worst case scenario. 30.00%  
Bottom of range [member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Growth rate used to extrapolate cash flow projections   2.00%
Top of range [member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Growth rate used to extrapolate cash flow projections   5.00%
AB inBev [member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Percentage of goodwill to total assets   53.00%