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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Earnings per share [abstract] |  |  |
Profit attributable to equity holders of AB InBev | $ 4,670 | $ 1,405 | $ 9,171
Weighted average number of ordinary and restricted shares | 2,007 | 1,998 | 1,984
Basic EPS from continuing and discontinued operations | $ 2.33 | $ 0.70 | $ 4.62
Profit/(loss) from continuing operations attributable to equity holders of AB InBev | $ 4,670 | $ (650) | $ 8,748
Weighted average number of ordinary and restricted shares | 2,007 | 1,998 | 1,984
Basic EPS from continuing operations | $ 2.33 | $ (0.33) | $ 4.41
Profit from continuing operations before exceptional items and discontinued operations, attributable to equity holders of AB InBev | $ 5,723 | $ 3,807 | $ 8,086
Weighted average number of ordinary and restricted shares | 2,007 | 1,998 | 1,984
Basic EPS from continuing operations before exceptional items | $ 2.85 | $ 1.91 | $ 4.08
Profit before exceptional items, discontinued operations, mark-to-market gains/losses and hyperinflation impacts, attributable to equity holders of AB InBev | $ 5,774 | $ 5,022 | $ 7,196
Weighted average number of ordinary and restricted shares | 2,007 | 1,998 | 1,984
Underlying EPS | $ 2.88 | $ 2.51 | $ 3.63
Profit attributable to equity holders of AB InBev | $ 4,670 | $ 1,405 | $ 9,171
Weighted average number of ordinary and restricted shares (diluted) | 2,045 | 2,037 | 2,026
Diluted EPS from continuing and discontinued operations | $ 2.28 | $ 0.69 | $ 4.53
Profit/(loss) from continuing operations attributable to equity holders of AB InBev | $ 4,670 | $ (650) | $ 8,748
Weighted average number of ordinary and restricted shares (diluted) | 2,045 | 1,998 | 2,026
Diluted EPS from continuing operations | $ 2.28 | $ (0.33) | $ 4.32
Profit from continuing operations before exceptional items and discontinued operations, attributable to equity holders of AB InBev | $ 5,723 | $ 3,807 | $ 8,086
Weighted average number of ordinary and restricted shares (diluted) | 2,045 | 2,037 | 2,026
Diluted EPS from continuing operations before exceptional items | $ 2.80 | $ 1.87 | $ 3.99

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