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Acquisition and sale of businesses and brands and purchase of non-controlling interests - Purchase of shares of non-controlling interests (Details) Ksh in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Mar. 23, 2023 | Jun. 30, 2024 USD ($) | Jan. 16, 2024 USD ($) | Mar. 24, 2023 USD ($) | Mar. 24, 2023 KES (Ksh) | Jun. 30, 2022 USD ($)
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |
Cash transferred | $ 373 | $ 0 |  | $ 0 |  |  |  | $ 116
Proportion of ownership interest in subsidiary |  |  |  | 100.00% |  |  |  |
DeLeon Holdco LLC |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  |  | 50.00% |  |  |
Diageo North America, Inc. | DeLeon Holdco LLC |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  |  | 50.00% |  |  |
Cash transferred |  |  |  |  | $ 223 |  |  |
Diageo Kenya Limited | East African Breweries Limited |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  |  |  | 14.97% | 14.97% |
Cash transferred |  |  |  |  |  | $ 173 | Ksh 22,732 |
Acquisition transaction cost | $ 5 |  |  |  |  |  |  |
DeLeon Holdco LLC |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary |  | 100.00% |  |  |  |  |  |
East African Breweries Limited |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |
Proportion of ownership interest in subsidiary | 65.00% |  | 50.03% |  |  |  |  |

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- Definition The amount of acquisition-related costs for transactions recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B64 -Subparagraph m -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_m&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
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