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Accounting information and policies - Principal foreign exchange rates used in translation of financial statements (Details)	12 Months Ended
	Jun. 30, 2024 £ / $	Jun. 30, 2024 £ / $ € / $	Jun. 30, 2023 £ / $	Jun. 30, 2023 £ / $ € / $	Jun. 30, 2022 £ / $	Jun. 30, 2022 £ / $ € / $	Jun. 30, 2024 € / $	Jun. 30, 2023 € / $	Jun. 30, 2022 € / $
Disclosure of foreign exchange rates [Line Items]
Income statement and cash flows	0.80	0.93	0.83	0.96	0.75	0.89
Assets and liabilities	0.79	0.79	0.79	0.79	0.83	0.83	0.93	0.93	0.96

X

- Definition

Disclosure of foreign exchange rates.

+ References

No definition available.

+ Details

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

X

- Definition

The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

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X

- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

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Period Type:	instant