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Financial instruments and risk management - Credit risk - Narrative (Details) £ in Millions, $ in Millions | Jun. 30, 2023 GBP (£) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 GBP (£) | Jun. 30, 2022 USD ($)
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Disclosure of detailed information about financial instruments [abstract] |  |  |  |
Maximum exposure to credit risk | £ 4,637 |  | £ 5,445 |
Credit support obligations | £ (15) | $ (19) | £ 19 | $ 23

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- Definition Credit support obligations. + References No definition available. + Details
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Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinancialInstrumentsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 36 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_a&doctype=Standard&book=b -URIDate 2022-03-24 + Details
Name: | ifrs-full_MaximumExposureToCreditRisk
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant