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, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Earnings per share [abstract] | |||
| Profit attributable to equity holders of AB InBev | $ 6,837 | $ 5,855 | $ 5,341 |
| Weighted average number of ordinary and restricted shares | 1,984 | 2,003 | 2,016 |
| Basic EPS | $ 3.45 | $ 2.92 | $ 2.65 |
| Profit attributable to equity holders of AB InBev | $ 6,837 | $ 5,855 | $ 5,341 |
| Weighted average number of ordinary and restricted shares (diluted) | 2,018 | 2,044 | 2,054 |
| Diluted EPS | $ 3.39 | $ 2.86 | $ 2.6 |
| Underlying profit | $ 7,410 | $ 7,061 | $ 6,158 |
| Weighted average number of ordinary and restricted shares | 1,984 | 2,003 | 2,016 |
| Underlying EPS | $ 3.73 | $ 3.53 | $ 3.05 |