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Working capital - Analysis of provisions for obsolescence of inventories (Details) - USD ($) $ in Millions | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2022
Classes of inventory [Line Items] |  |  |
Balance at beginning of the year | $ 128 | $ 113 | $ 133
Exchange differences | (3) | (27) | (8)
Income statement charge | 51 | 66 | 8
Utilised | (47) | (23) | (18)
Sale of businesses | (5) | (1) | (2)
Ending balance | $ 124 | $ 128 | $ 113

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- Definition [Line Items] for Classes of inventory [Table] + References No definition available. + Details
Name: | deo_ClassesofinventoryLineItems
Namespace Prefix: | deo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Decrease In Inventory Provision As Result Of Sale Of Business + References No definition available. + Details
Name: | deo_DecreaseInInventoryProvisionAsResultOfSaleOfBusiness
Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The increase (decrease) in Inventory provision resulting from foreign currency exchange rate changes on inventory provisions measured in a currency different from the entity's presentation currency. + References No definition available. + Details
Name: | deo_IncreaseDecreaseThroughNetExchangeDifferencesInventoryProvisions
Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Inventory provision. + References No definition available. + Details
Name: | deo_InventoryProvision
Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Total additional inventory provision made increasing and unused provision reversed (decreasing) inventory provisions. + References No definition available. + Details
Name: | deo_InventoryProvisionChargedReleasedToProfitAndLossProvisions
Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount used (ie incurrent and charged against the inventory provision) for inventory provisions. + References No definition available. + Details
Name: | deo_UtilisedInventoryProvision
Namespace Prefix: | deo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration