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v3.22.2.2

Legal Proceedings - Additional Information (Details) - Plaintiffs | 3 Months Ended
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Sep. 30, 2022 USD ($)
Disclosure Of Legal Proceedings [Line Items] |
Provision for litigation settlements | $ 2,000,000.0
Admission of liability | $ 0

X
- Definition Admission of liability. + References No definition available. + Details
Name: | meso_AdmissionOfLiability
Namespace Prefix: | meso_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Disclosure of legal proceedings. + References No definition available. + Details
Name: | meso_DisclosureOfLegalProceedingsLineItems
Namespace Prefix: | meso_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Provision for litigation settlements. + References No definition available. + Details
Name: | meso_ProvisionForLitigationSettlements
Namespace Prefix: | meso_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_CounterpartiesAxis=meso_PlaintiffsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |