Share-Based Payments - Summary of Number of Outstanding Deferred and Restricted stock Units (Detail) - Restricted Stock Units And Performance Stock Units [Member] Unit_pure in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| AB InBev [member] | |||
| Disclosure of other equity instruments [line items] | |||
| RSUs and PSUs outstanding at 1 January | 31.2 | 29.0 | 28.7 |
| RSUs and PSUs issued during the year | 9.7 | 7.3 | 5.9 |
| RSUs and PSUs vested during the year | (14.9) | (4.1) | (4.3) |
| RSUs and PSUs forfeited during the year | (0.8) | (1.1) | (1.3) |
| RSUs and PSUs outstanding at the end of December | 25.2 | 31.2 | 29.0 |
| Brazil [Member] | Ambev [member] | |||
| Disclosure of other equity instruments [line items] | |||
| RSUs and PSUs outstanding at 1 January | 120.4 | 120.0 | 109.8 |
| RSUs and PSUs issued during the year | 33.9 | 25.6 | 33.7 |
| RSUs and PSUs vested during the year | (48.7) | (20.3) | (18.3) |
| RSUs and PSUs forfeited during the year | (4.8) | (4.9) | (5.2) |
| RSUs and PSUs outstanding at the end of December | 100.8 | 120.4 | 120.0 |