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Post employment benefits - Balance sheet analysis of post employment plans (Parenthetical) (Details) - GBP (£) £ in Millions	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Disclosure of defined benefit plans [abstract]
Surplus restriction	£ 3	£ 3
DPS Plan Surplus (Deficit)	£ 840	£ 934	£ 906

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- Definition

The asset ceiling is the present value of any economic benefits available in the form of refunds from the plan or reduction in future contributions to the plan.

+ References

No definition available.

+ Details

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- Definition

Surplus Deficit DPS Plan

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No definition available.

+ Details

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

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- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
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