v3.26.1
Investments in associates and joint ventures - Narrative (Details)
$ in Millions
12 Months Ended
Jun. 30, 2026
£ / $
Jun. 30, 2026
£ / $
Jun. 30, 2026
€ / $
£ / $
Jun. 30, 2026
£ / $
Jun. 30, 2026
USD ($)
£ / $
Jun. 30, 2025
£ / $
Jun. 30, 2025
£ / $
€ / $
Jun. 30, 2025
USD ($)
£ / $
Jun. 30, 2024
£ / $
Jun. 30, 2024
€ / $
£ / $
Jun. 30, 2026
€ / $
Jun. 30, 2026
USD ($)
Jun. 30, 2025
€ / $
Jun. 30, 2025
USD ($)
Jun. 30, 2024
€ / $
Disclosure of associates [line items]                              
Loans and preference shares invested in associates                       $ 32   $ 37  
Impairment charged during the year         $ (29)     $ (308)              
Average exchange rate (EUR per USD)   0.75 0.86     0.77 0.92   0.80 0.93          
Assets and liabilities 0.76 0.76 0.76 0.76 0.76 0.73 0.73 0.73 0.79 0.79 0.88   0.85   0.93
Decrease in EBIDTA multiple | Moet Hennessy                              
Disclosure of associates [line items]                              
Potential impairment charge         $ 312                    
Decrease in maintainable EBIDTA | Moet Hennessy                              
Disclosure of associates [line items]                              
Potential impairment charge         388                    
Moet Hennessy                              
Disclosure of associates [line items]                              
Ownership interest in associate       34.00%                      
Country of incorporation France                            
Impairment charged during the year         0     $ 0              
Average exchange rate (EUR per USD) | € / $     0.86       0.92     0.93          
Moet Hennessy | Fair value                              
Disclosure of associates [line items]                              
Assets and liabilities | € / $                     0.88   0.85    
Other joint ventures and associates                              
Disclosure of associates [line items]                              
Impairment charged during the year         (29)     $ (308)              
Additional operational funding         $ (25)