Derivative financial instruments (Details) - GBP (£) £ in Thousands	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Derivative financial instruments
Derivative financial instruments, assets	£ 30,065	£ 23,059	£ 5,580
Derivative financial instruments, liabilities	(519)	(81)	(4,767)
Derivative financial instruments, non-current assets	22,189	16,462	4,434
Derivative financial instruments, non-current liabilities	(519)	(49)	(3,908)
Derivative financial instruments, current assets	7,876	6,597	1,146
Derivative financial instruments, current liabilities		(32)	(859)
Interest rate swap \| Derivatives used for hedging:
Derivative financial instruments
Derivative financial instruments, assets	4,901	2,458
Derivative financial instruments, non-current assets	4,901	2,458
Embedded foreign exchange derivatives \| At fair value through profit and loss
Derivative financial instruments
Derivative financial instruments, assets	22,561	20,286	5,580
Derivative financial instruments, non-current assets	15,938	13,786
Forward foreign exchange contracts \| At fair value through profit and loss
Derivative financial instruments
Derivative financial instruments, assets	2,603	315
Derivative financial instruments, non-current assets	1,350	218	4,434
Interest rate swap \| Derivatives used for hedging:
Derivative financial instruments
Derivative financial instruments, liabilities			(3,045)
Derivative financial instruments, non-current liabilities			(3,045)
Embedded foreign exchange derivatives \| At fair value through profit and loss:
Derivative financial instruments
Derivative financial instruments, liabilities			(194)
Derivative financial instruments, non-current liabilities			(96)
Forward foreign exchange contracts \| Derivatives used for hedging:
Derivative financial instruments
Derivative financial instruments, liabilities			(76)
Forward foreign exchange contracts \| At fair value through profit and loss:
Derivative financial instruments
Derivative financial instruments, liabilities	(519)	(81)	(1,452)
Derivative financial instruments, non-current liabilities	£ (519)	£ (49)	£ (767)

The amount of current derivative financial assets. [Refer: Derivative financial assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_CurrentDerivativeFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current derivative financial liabilities. [Refer: Derivative financial liabilities]

+ References

+ Details

Name:	ifrs-full_CurrentDerivativeFinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

+ Details

Name:	ifrs-full_DerivativeFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

+ Details

Name:	ifrs-full_DerivativeFinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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

- Definition

The amount of non-current derivative financial assets. [Refer: Derivative financial assets]

+ References

+ Details

Name:	ifrs-full_NoncurrentDerivativeFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]

+ References

+ Details

Name:	ifrs-full_NoncurrentDerivativeFinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_InterestRateSwapContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_HedgingInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=manu_EmbeddedForeignExchangeDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_ForwardContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=ifrs-full_InterestRateSwapContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=ifrs-full_HedgingInstrumentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=manu_EmbeddedForeignExchangeDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=ifrs-full_ForwardContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: