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Financial instruments and risk management - Fair value measurement - Narrative (Details) - GBP (£) £ in Millions | 12 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Business combinations |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Contingent consideration payment period | 8 years |  |
Level 3 |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | £ 587 | £ 578 |
Movement in financial assets - other | 46 | 22 |
Zacapa put option | Level 3 |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | 216 | 149 | £ 167
Contingent consideration recognised on acquisition of businesses | Business combinations | Undiscounted amount |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | 381 |  |
Contingent consideration recognised on acquisition of businesses | Level 3 |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | £ 371 | 429 | £ 249
Industrias Licoreras de Guatemala |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Proportion of ownership interest in investment by external party | 50.00% |  |
Industrias Licoreras de Guatemala | Option exercised at 30 June 2024 |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Increase (decrease) in fair value liability | £ 69 |  |
Industrias Licoreras de Guatemala | Zacapa put option | Level 3 |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Other financial liabilities | £ 216 | £ 149 |

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