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Share-Based Payments - Summary of Weighted Average Exercise Price of Options (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Brazil [Member] | Ambev [member]      
Disclosure of options weighted average exercise price [line items]      
Options outstanding at 1 January $ 2.95 $ 3.89 $ 3.72
Forfeited during the year 3.34 3.6 4.68
Outstanding at the end of December 3.44 2.95 3.89
Exercisable at the end of December 3.44 2.95 3.94
AB InBev [member]      
Disclosure of options weighted average exercise price [line items]      
Options outstanding at 1 January 71.59 79.46 76.04
Exercised during the year 47.47 0 29.96
Forfeited during the year 113 75.45 67.66
Lapsed during the year 129.02 102.1 96.27
Outstanding at the end of December 71.06 71.59 79.46
Exercisable at the end of December $ 71.06 $ 93.25 $ 108.11