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Changes in Equity and Earnings per Share - Additional Information (Detail)
 6 Months Ended 12 Months Ended
Jan. 30, 2026
USD ($)
Oct. 29, 2025
USD ($)
shares
Apr. 30, 2025
EUR (€)
€ / shares
Jun. 30, 2026
USD ($)
shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
shares
Jun. 30, 2026
EUR (€)
€ / shares
shares
Apr. 29, 2026
EUR (€)
€ / shares
Feb. 27, 2026
USD ($)
Dec. 31, 2025
EUR (€)
€ / shares
Oct. 29, 2025
EUR (€)
€ / shares
shares
Disclosure of classes of share capital [line items]                      
Issued capital       $ 1,736,000,000   $ 1,736,000,000 € 1,238,608,344.12        
Dividend declared per share | € / shares                   € 1.15  
Dividend declared | €     € 1,986,000,000         € 1,972,000,000   € 2,268,000,000 € 296,000,000
Dividend paid date   Nov. 20, 2025 May 08, 2025                
Profit attributable to equity holders | $       $ 6,314,000,000 $ 3,824,000,000            
Number of antidilutive share options outstanding       17,000,000 25,000,000   17,000,000        
Consideration transferred, acquisition-date fair value | $                 $ 493,000,000    
Dividend payout date   Oct. 29, 2025 Apr. 30, 2025                
Dividend Proposed [Member]                      
Disclosure of classes of share capital [line items]                      
Dividend proposed per share | € / shares     € 1         € 1     € 0.15
Ambev [member]                      
Disclosure of classes of share capital [line items]                      
Share buyback for an amount | $       $ 511,000,000              
Stock Lending Arrangements [Member]                      
Disclosure of classes of share capital [line items]                      
Number Of Borrowed Shares Outstanding           26,700,000          
Treasury shares [member]                      
Disclosure of classes of share capital [line items]                      
Number of treasury shares owned by ABI & subsidiaries       47,676,768     47,676,768        
Restricted shares       222,037,958              
Par value per share | € / shares             € 0.61        
Treasury shares owned by company       $ 35,687,517     € 29,082,828        
Stock repurchase program, authorized amount | $   $ 6,000,000,000                  
SAB Combination [Member]                      
Disclosure of classes of share capital [line items]                      
Number of restricted shares issued       326,000,000              
Number of restricted shares converted into ordinary shares       104,000,000              
US Based Metal Container Plants [Member]                      
Disclosure of classes of share capital [line items]                      
Consideration transferred, acquisition-date fair value | $       $ 2,900,000,000              
Top of range [member]                      
Disclosure of classes of share capital [line items]                      
Tax withholding percentage       15.00%              
Parent [member]                      
Disclosure of classes of share capital [line items]                      
Issued capital | $       $ 1,736,000,000              
Number of treasury shares owned by ABI & subsidiaries       47,676,768     47,676,768        
Number of shares authorized       2,019,241,973     2,019,241,973        
Unissued capital | €             € 37,000,000        
Parent [member] | Treasury shares [member]                      
Disclosure of classes of share capital [line items]                      
Number of treasury shares owned by ABI       47,038,407     47,038,407        
Percentage of shares repurchased       1.19%     1.19%        
Stock repurchased during period, value | $   $ 1,701,000,000                  
Stock repurchased during period, shares   23,999,230                 23,999,230
Apollo [Member] | US Based Metal Container Plants [Member]                      
Disclosure of classes of share capital [line items]                      
Ownership interest 49.90%                    
Consideration transferred, acquisition-date fair value | $ $ 2,900,000,000