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Changes in Equity and Earnings Per Share - Summary of Weighted Average Number of Ordinary and Restricted Shares (Detail) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of information about weighted average number of ordinary and restricted shares outstanding [line items] |  |  |
Issued ordinary and restricted shares at 1 January, net of treasury shares | 1,984 | 1,981 | 1,972
Effect of stock lending | 30 | 30 | 30
Effect of Delivery of Treasury Shares and Share Buyback Programs | 2 | 2 | 4
Weighted average number of ordinary and restricted shares at 31 December | 2,016 | 2,013 | 2,007
Effect of share options, PSUs and restricted stock units | 38 | 37 | 38
Weighted average number of ordinary and restricted shares (diluted) at 31 December | 2,054 | 2,050 | 2,045
Profit attributable to equity holders of AB InBev | $ 5,341 | $ 5,969 | $ 4,670
Net impact of exceptional items on profit (refer to Note 8) | 614 | 153 | 1,076
Profit before exceptional items, attributable to equity holders of AB InBev | 5,955 | 6,122 | 5,746
Hyperinflation impacts | 203 | (30) | 28
Underlying profit | $ 6,158 | $ 6,093 | $ 5,774
Ordinary restricted shares [member] |  |  |
Disclosure of information about weighted average number of ordinary and restricted shares outstanding [line items] |  |  |
Weighted average number of ordinary and restricted shares at 31 December | 2,016 | 2,013 | 2,007

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