v3.26.1
Acquisition and sale of businesses and brands and purchase of non-controlling interests - Sales of businesses and brands narrative (Details)
$ in Millions, ₩ in Billions
12 Months Ended
Jan. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Jul. 03, 2025
USD ($)
Jul. 01, 2025
USD ($)
Jan. 23, 2025
USD ($)
Oct. 15, 2024
USD ($)
Sep. 30, 2024
USD ($)
Sep. 19, 2024
USD ($)
Oct. 27, 2023
USD ($)
Oct. 27, 2023
KRW (₩)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Non-operating items                     $ 6 $ (220) $ (70)  
Net sales                     19,643 20,245 20,269  
Operating profit                     3,156 4,335 6,001  
Sheridan sale                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Consideration paid (received) $ (48)                          
Non-operating items                     46      
EABL and Kenyan spirits prospective sale                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Non-operating items                     (43)      
Diageo Operations Italy S.p.A.                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Non-operating items                     (7) (29)    
Portion of consideration paid (received) consisting of cash and cash equivalents   $ (120)                        
Exchange recycled from other comprehensive income                     (6)      
Guinness Ghana Breweries Plc                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Non-operating items                     (49)      
Portion of consideration paid (received) consisting of cash and cash equivalents     $ (81)                      
Exchange recycled from other comprehensive income                     (94)      
Sale of businesses     $ 64                      
Net sales                       322 151  
Operating profit                       45 (5)  
Hyperinflationary adjustment recycled from other comprehensive income                     22      
Seychelles Breweries Limited                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Non-operating items                     62      
Portion of consideration paid (received) consisting of cash and cash equivalents       $ (89)                    
Exchange recycled from other comprehensive income                     $ (8)      
Sale of businesses       $ 32                    
Guinness Nigeria plc                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Consideration paid (received)             $ (64)              
Non-operating items                       (125)    
Exchange recycled from other comprehensive income                       (175)    
Sale of businesses             $ 20              
Net sales                       65 296 $ 504
Operating profit                       (10) (60) $ (14)
Cacique brand disposal                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Consideration paid (received)         $ (68)                  
Non-operating items                       (20)    
Pampero Brand and Inventory                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Consideration paid (received)           $ (57)                
Non-operating items                       53    
Safari brand                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Consideration paid (received)               $ (16)            
Non-operating items                       $ 15    
Windsor business                            
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations1 [Line Items]                            
Consideration paid (received)                 $ (152) ₩ (206)        
Non-operating items                         (58)  
Exchange recycled from other comprehensive income                         $ (26)