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Related party transactions (Details) - Diageo Pension Trust Limited £ in Millions | Dec. 31, 2022 GBP (£) | Oct. 31, 2022 GBP (£) credit_agreement
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Disclosure of transactions between related parties [line items] |  |
Related party transactions, interim credit facility provided |  | £ 1,000
Related party transactions, number of agreements | credit_agreement |  | 2
Receivables due from related parties | £ 0 |
Diageo Lifestyle Plan |  |
Disclosure of transactions between related parties [line items] |  |
Related party transactions, interim credit facility provided |  | £ 150
Diageo Pension Scheme |  |
Disclosure of transactions between related parties [line items] |  |
Related party transactions, interim credit facility provided |  | £ 850

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- Definition Related Party Transactions, Interim Credit Facility Provided + References No definition available. + Details
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Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Related Party Transactions, Number Of Agreements + References No definition available. + Details
Name: | deo_RelatedPartyTransactionsNumberOfAgreements
Namespace Prefix: | deo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of receivables due from related parties. [Refer: Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_78_b&doctype=Standard -URIDate 2022-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |