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Net borrowings - Narrative (Details) £ in Millions	Dec. 31, 2019 GBP (£)
Borrowings [abstract]
Operating lease liabilities prior to adoption of IFRS 16	£ 376

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- Definition

Operating Lease Liabilities Under IAS 17

+ References

No definition available.

+ Details

Name:	deo_OperatingLeaseLiabilitiesUnderIAS17
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_BorrowingsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration