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Related Parties - Summary of Aggregate Amounts of AB InBev's Interest (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of joint ventures [line items]      
Non-current assets $ 193,678 $ 199,891  
Current assets 23,949 26,519  
Non-current liabilities 104,104 115,707  
Current liabilities 34,184 32,352  
Result from operations 13,824 9,620 $ 16,098
Profit attributable to equity holders of AB InBev 4,670 1,405 9,171
Jointly controlled entities [member]      
Disclosure of joint ventures [line items]      
Non-current assets 8 8 10
Current assets 2 2 3
Non-current liabilities 9 9 11
Current liabilities 2 12 10
Result from operations (3) 3 3
Profit attributable to equity holders of AB InBev $ (2) $ 3 $ 3