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Intangible assets - Sensitivity to change in key assumptions (Details)
£ in Millions
 12 Months Ended
Jun. 30, 2022
GBP (£)
McDowell's No.1  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Carrying amount of asset or cash-generating unit £ 892
Bell's whisky  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Carrying amount of asset or cash-generating unit 145
Yenì Raki  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Carrying amount of asset or cash-generating unit 346
Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Carrying amount of asset or cash-generating unit 688
Headroom | McDowell's No.1  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Headroom 0
Headroom | Bell's whisky  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Headroom 0
Headroom | Yenì Raki  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Headroom 44
Headroom | Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Headroom £ 14
Increase in discount rate | McDowell's No.1  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 1.00%
Potential impairment loss £ 92
Increase in discount rate | Bell's whisky  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 3.00%
Potential impairment loss £ 27
Increase in discount rate | Yenì Raki  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 7.00%
Potential impairment loss £ 95
Increase in discount rate | Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 7.00%
Potential impairment loss £ 249
Decrease in terminal growth rate | Bell's whisky  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 1.00%
Potential impairment loss £ 9
Decrease in terminal growth rate | Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 1.00%
Potential impairment loss £ 13
Decrease in annual growth rate in forecast period 2023-2029 | McDowell's No.1  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 2.00%
Potential impairment loss £ 121
Decrease in cash flows | Bell's whisky  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 10.00%
Potential impairment loss £ 15
Decrease in cash flows | Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 10.00%
Potential impairment loss £ 88
Decrease in future volume forecast | Yenì Raki  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 4.00%
Potential impairment loss £ 20
Decrease in future volume forecast | Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 1.00%
Potential impairment loss £ 124
Further devaluation of local currency | Turkey  
Disclosure of intangible assets sensitivity to change in key assumptions [line items]  
Reasonably possible change 66.00%
Potential impairment loss £ 69