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Contingencies - Additional Information (Detail)
€ in Millions, R$ in Millions, $ in Millions, Tsh in Billions, S/ in Billions, R in Billions
 1 Months Ended 12 Months Ended
Feb. 28, 2025
USD ($)
Feb. 28, 2025
BRL (R$)
Feb. 29, 2024
USD ($)
Feb. 29, 2024
BRL (R$)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2025
BRL (R$)
Dec. 31, 2025
TZS (Tsh)
Dec. 31, 2025
ZAR (R)
Dec. 31, 2025
PEN (S/)
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. 24, 2019
USD ($)
Jan. 24, 2019
EUR (€)
Disclosure of detailed information about material tax [line items]                                          
Exposure to credit risk         $ 5,406 $ 4,714                              
Provisions recorded         617 $ 576 $ 589                            
Aggregate exceptional charge for tax audit claim         86                                
Exceptional charge for Tax audit claim         20   $ 66                            
Tax litigation minas gerais law impact                             $ 200 R$ 1,000          
Tax penalty limit applied percent                             50.00% 50.00%          
Tax litigation maranhao new claims                       $ 300 R$ 1,400                
Reduction Contingent Liabilities     $ 500 R$ 2,800                                  
Amount In Respect Of Which Party Favourable Judgement Is Given By Lower Administrative Court     $ 18 R$ 100                                  
Disallowance Of Tax Paid Abroad [Member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         3,500     R$ 19,100                          
Deductibility Of IOC Expenses [Member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         5,600     30,800                          
AB INBEV'S PERUVIAN TAX MATTERS [Member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         600           S/ 2.1                    
Claim on dividends of shares         900           3.0                    
Assessment amount of prepaid by subsidiaries         100           S/ 0.5                    
AB INBEVS SOUTH AFRICA TAX MATTERS [Member]                                          
Disclosure of detailed information about material tax [line items]                                          
Amount payable in respect of tax matters settled gross         300         R 4.5                      
Original assessment from SARS (already settled)         1,000         17.7                      
Original assessment from SARS to CCBA (already settled)         500         8.9                      
Original assessment from SARS - excluding penalties and fees (already settled)         400         R 6.4                      
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     1,000                          
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%                            
Ambev [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Proportion of ownership interest in subsidiary         61.73% 61.73%                              
Ambev [member] | IPI excise tax [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         $ 200     1,300                          
Percentage reduction in the amount payable to tax authorities         98.00%                                
Ambev [member] | Manaus free trade zone IPI social contributions [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         $ 1,300     7,300                          
Arosuco [member] | Disallowance Of Tax Paid Abroad [Member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         $ 35     192                          
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]                                          
Tax assessment amount which were cancelled since Sep 2024                                 $ 200 R$ 1,000      
Tax Assessment During 2005 [member] | Foreign subsidiaries [member] | In Bev Holding Brasil SA [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Exposure to credit risk         $ 1,500     8,000                          
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         1,400     7,700                          
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     1,600                          
Tax Assessment in December 2015 [member] | Ambev [member] | Integration program social security financing levy [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         100     600                          
Tax Assessment in December [Member] | Ambev [member] | MAG [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         100     300                          
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     1,000                          
Rio de Janeiro [member] | Arosuco [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         $ 100     600                          
Tanzania [member] | TANZANIA BREWERIES PLC [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Proportion of ownership interest in subsidiary         39.65%                                
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     900                          
ICMS-ST Trigger [member] | Ambev [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         2,200     12,000                          
Amount of reclassification of remote loss $ 200 R$ 800                                      
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] | Ambev [member]                                          
Disclosure of detailed information about material tax [line items]                                          
Estimate of possible loss         $ 200     R$ 900