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v3.25.2

Income Tax Note (Details) | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Canada [Member] |  |
Income Tax Note [Line Items] |  |
Percentage of statutory income tax rate | 26.50% | 26.50%

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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2024-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2024-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | pbm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_GeographicalAreasAxis=country_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |