Property, plant and equipment - Depreciation methods and useful lives (Details)	12 Months Ended
Jun. 30, 2022
Freehold property acquired before 1 August 1999
Property, plant and equipment
Depreciation rate on reducing balance basis (as a percent)	1.33%
Freehold property acquired after 1 August 1999
Property, plant and equipment
Estimated useful lives of property, plant and equipment (in years)	75 years
Computer equipment and software (included within Plant and machinery)
Property, plant and equipment
Estimated useful lives of property, plant and equipment (in years)	3 years
Fixtures and fittings
Property, plant and equipment
Estimated useful lives of property, plant and equipment (in years)	7 years
Minimum \| Plant and machinery
Property, plant and equipment
Estimated useful lives of property, plant and equipment (in years)	4 years
Maximum \| Plant and machinery
Property, plant and equipment
Estimated useful lives of property, plant and equipment (in years)	5 years

The depreciation rate used for property, plant and equipment. [Refer: Property, plant and equipment]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2021-01-01
-Paragraph 73
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_c&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_DepreciationRatePropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

- Definition

The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment]

+ References

+ Details

Name:	ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=manu_FreeholdPropertyAcquiredBefore1August1999Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=manu_FreeholdPropertyAcquiredAfter1August1999Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=manu_ComputerEquipmentAndSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_FixturesAndFittingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=manu_PlantAndMachineryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: