Name:	deo_AuditRelatedAssuranceServices
Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Audit fee paid to the group's principal auditor for the audit of the group consolidated financial statements.

No definition available.

Name:	deo_AuditorsRemunerationForAuditOfFinancialStatements
Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Audit fee paid to the group's principal auditor for the audit of the financial statements of subsidiaries.

No definition available.

Name:	deo_AuditorsRemunerationForAuditOfFinancialStatementsOfSubsidiaries
Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Other assurance services comprise the aggregate fees for assurance and related services that are related to the performance of the audit or review of the financial statements and are not reported under total audit fees.

No definition available.

Name:	deo_AuditorsRemunerationForOtherAssuranceServices
Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Additional information about operating costs.

No definition available.

Name:	deo_DisclosureOfOperatingCostsLineItems
Namespace Prefix:	deo_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Service provided by the group's principal auditor in respect of the review of the interim financial information. This would be included in audit related fees in the United States and audit fees in the UK.

No definition available.

Name:	deo_ReviewOfInterimFinancialInformation
Namespace Prefix:	deo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of fees paid or payable to the entity's auditors.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_AuditorsRemuneration
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of fees paid or payable to the entity's auditors for auditing services.

Name:	ifrs-full_AuditorsRemunerationForAuditServices
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of fees paid or payable to the entity's auditors for services that the entity does not separately disclose in the same statement or note.

Name:	ifrs-full_AuditorsRemunerationForOtherServices
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of fees paid or payable to the entity's auditors for tax services.