Contingent liabilities and legal proceedings - Tax (Details) $ in Millions	Jun. 30, 2025 USD ($)
Maximum \| Tax contingent liability \| Brazil
Disclosure of contingent liabilities [line items]
Potential liability	$ 906
Maximum \| Tax contingent liability \| India
Disclosure of contingent liabilities [line items]
Potential liability	90
India
Disclosure of contingent liabilities [line items]
Receivable for protest payments	120
Receivable for protest payments, corporate taxes	108
Receivable for protest payments, indirect taxes	$ 12

Receivable For Payments For Protest Of Tax Assessment

No definition available.

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Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Receivable For Payments For Protest Of Tax Assessment, Corporate Taxes

+ References

No definition available.

+ Details

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Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Receivable For Payments For Protest Of Tax Assessment, Indirect Taxes

+ References

No definition available.

+ Details

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Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Classes of contingent liabilities [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 37
-IssueDate 2024-01-01
-Paragraph 86
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=37&code=ifrs-tx-2024-en-r&anchor=para_86_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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