XML 195 R70.htm IDEA: XBRL DOCUMENT v3.23.2
Investments in associates and joint ventures - Narrative (Details)
£ in Millions
12 Months Ended
Jun. 30, 2023
GBP (£)
€ / £
Jun. 30, 2022
GBP (£)
€ / £
Jun. 30, 2021
€ / £
Disclosure of associates [line items]      
Cost of shares less goodwill written off on acquisitions £ 1,384 £ 1,340  
Group's share of post acquisition reserves £ 2,445 £ 2,312  
Moet Hennessy      
Disclosure of associates [line items]      
Ownership interest in associate 34.00%    
Country of incorporation France    
Average exchange rate (EUR per GBP) | € / £ 1.15 1.18 1.13