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Contingencies - Additional Information (Detail) € in Millions, $ in Millions, Tsh in Billions, S/ in Billions, R$ in Billions | 1 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 28, 2025 USD ($) | Feb. 28, 2025 BRL (R$) | Jun. 30, 2026 USD ($) | Dec. 31, 2025 USD ($) | Jun. 30, 2026 BRL (R$) | Jun. 30, 2026 TZS (Tsh) | Jun. 30, 2026 PEN (S/) | Mar. 31, 2026 USD ($) | Mar. 31, 2026 BRL (R$) | Nov. 30, 2025 USD ($) | Nov. 30, 2025 BRL (R$) | Oct. 31, 2025 | Jul. 31, 2025 USD ($) | Jul. 31, 2025 BRL (R$) | Sep. 30, 2024 USD ($) | Sep. 30, 2024 BRL (R$) | Nov. 30, 2023 | Jan. 31, 2019 USD ($) | Jan. 31, 2019 EUR (€)
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exposure to credit risk |  |  | $ 6,494 | $ 5,406 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessments Under Appeal |  |  |  | 71 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate Exceptional Charge For Tax Audit Claim |  |  |  | 86 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Litigation Maranhao New Claims |  |  |  |  |  |  |  |  |  | $ 300 | R$ 1.4 |  |  |  |  |  |  |  |
Tax Litigation Minas Gerais Law Impact |  |  |  |  |  |  |  |  |  |  |  |  | $ 200 | R$ 1.0 |  |  |  |  |
Tax Penalty Limit Applied Percent |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |  |
Exceptional charge for tax audit claim |  |  |  | $ 20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disallowance Of Tax Paid Abroad [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 4,600 |  | R$ 236.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deductibility Of IOC Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 6,300 |  | 328.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
SOUTH KOREAN TAX MATTERS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exceptional charge for tax audit claim |  |  | 66 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
AB INBEV'S PERUVIAN TAX MATTERS [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 600 |  |  |  | S/ 21.0 |  |  |  |  |  |  |  |  |  |  |  |
Claim on dividends of shares |  |  | 900 |  |  |  | 30.0 |  |  |  |  |  |  |  |  |  |  |  |
Assessment amount of prepaid by subsidiaries |  |  | 100 |  |  |  | S/ 0.5 |  |  |  |  |  |  |  |  |  |  |  |
Tax contingent liability [member] | TANZANIA BREWERIES PLC [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original assessment from SARS to CCBA (already settled) |  |  | 300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
European commission decision [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provisions recorded |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 80 | € 68
Deposits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 80 | € 68
Ambev [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 200 |  | 1.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ambev [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 200 |  | 0.8 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ambev [member] | IPI excise tax [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 200 |  | 1.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ambev [member] | Manaus free trade zone IPI social contributions [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | $ 1,400 |  | 75.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ambev [member] | MAG [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revised penalty payable in percentage |  |  |  |  |  |  |  |  |  |  |  | 75.00% |  |  |  |  | 100.00% |  |
Penalty payable in percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150.00% |  |
Cerbuco Brewing Inc [Member] | Cerveceria Bucanero S.A [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessment During 2005 [member] | Foreign subsidiaries [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exposure to credit risk |  |  | $ 1,400 |  | 7.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax assessment amount which were cancelled since Sep 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 200 | R$ 10.0 |  |  |
Tax Contingency Amount Related To Tax Return |  |  |  |  |  |  |  | $ 40 | R$ 0.2 |  |  |  |  |  |  |  |  |  |
Tax Assessment in December 2011 [member] | Ambev [member] | In Bev Holding Brasil SA [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 1,500 |  | 79.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax assessment in October 2013 [member] | Ambev [member] | Beverage Associates Holding Limited [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 300 |  | 1.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessment in December [Member] | Ambev [member] | MAG [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 100 |  | 3.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax Assessment in November 2017 [member] | Ambev [member] | CND Holdings [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 200 |  | 11.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rio de Janeiro [member] | Arosuco [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 100 |  | 6.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tanzania [member] | Tax contingent liability [member] | TANZANIA BREWERIES PLC [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original assessment from SARS to CCBA (already settled) | Tsh |  |  |  |  |  | Tsh 850 |  |  |  |  |  |  |  |  |  |  |  |  |
ICMS-PRODEPE [Member] | Ambev [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 200 |  | 9.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
ICMS-ST Trigger [member] | Ambev [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | 2,400 |  | 125.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of reclassification of remote loss | $ 200 | R$ 8.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of maximum limit for late fines | 20.00% | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ICMS Tax Credits For Rio Grande do Sul and Sao Paulo [Member] | Tax Assessment in 2018 and 2021 [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about material tax [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | $ 200 |  | R$ 10.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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