Working capital - Inventories expected to be utilized after more than one year (Details) - USD ($) $ in Millions	Jun. 30, 2024	Jun. 30, 2023
Summary Of Additional Information About Working Capital [Abstract]
Raw materials and consumables	$ 19	$ 29
Maturing inventories	5,885	5,119
Non current inventories	$ 5,904	$ 5,148

Raw materials and consumables expected to be utilised after more than one year.

No definition available.

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