Name:	dei_EntityListingDepositoryReceiptRatio
Namespace Prefix:	dei_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

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.

No definition available.

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

The cash inflow from borrowings obtained. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
-Paragraph 17
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_c&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2025-01-01
-Paragraph 17
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_17_d&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Borrowing Facilities, Maximum Borrowing Capacity

No definition available.

Name:	meso_BorrowingFacilitiesMaximumBorrowingCapacity
Namespace Prefix:	meso_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Borrowings term.

No definition available.

Name:	meso_BorrowingsMaturityTerm
Namespace Prefix:	meso_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of warrants granted to purchase American Depositary Shares.

No definition available.

Name:	meso_NumberOfWarrantsGrantedToPurchaseAmericanDepositaryShares
Namespace Prefix:	meso_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Number Of Warrants Granted To Purchase Shares

No definition available.

Name:	meso_NumberOfWarrantsGrantedToPurchaseShares
Namespace Prefix:	meso_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Percentage of premium for volume-weighted average price

No definition available.

Name:	meso_PercentageOfPremiumForVolumeWeightedAveragePrice
Namespace Prefix:	meso_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Warrant price per share.

No definition available.

Name:	meso_WarrantsPricePerShare
Namespace Prefix:	meso_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=meso_CreditLineFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_ComponentsOfEquityAxis=meso_AmericanDepositarySharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_CounterpartiesAxis=meso_OaktreeCapitalManagementLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_BorrowingsByNameAxis=meso_CreditLineFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_BorrowingsByNameAxis=meso_SeniorDebtFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_BorrowingsByNameAxis=meso_LoanAndSecurityAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: