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Financial assets and liabilities - Summary of Cash and Cash Equivalents (Parenthetical) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Jun. 30, 2023
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Disclosure Of Financial Assets And Liabilities [Abstract] |  |
Interest-bearing deposits at call held as security | $ 0.4 | $ 0.4

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- Definition Disclosure of financial assets and liabilities abstract. + References No definition available. + Details
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Namespace Prefix: | meso_
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Balance Type: | na
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- Definition Interest bearing deposits at call held as security. + References No definition available. + Details
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Balance Type: | debit
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