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Changes in Equity and Earnings Per Share - Summary of EPS (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Earnings per share [abstract]      
Profit attributable to equity holders of AB InBev $ 5,341 $ 5,969 $ 4,670
Weighted average number of ordinary and restricted shares 2,016 2,013 2,007
Basic EPS $ 2.65 $ 2.97 [1] $ 2.33 [1]
Underlying profit $ 6,158 $ 6,093 $ 5,774
Weighted average number of ordinary and restricted shares 2,016 2,013 2,007
Underlying EPS $ 3.05 $ 3.03 $ 2.88
Profit attributable to equity holders of AB InBev $ 5,341 $ 5,969 $ 4,670
Weighted average number of ordinary and restricted shares (diluted) 2,054 2,050 2,045
Diluted EPS $ 2.6 $ 2.91 [1] $ 2.28 [1]
[1] As from 1 January 2023, mark-to-market gains/(losses) on derivatives related to the hedging of the share-based payment programs are reported in the exceptional net finance income/(cost). The 2021 and 2022 presentation were amended to conform to the 2023 presentation.