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SIGNIFICANT ACCOUNTING POLICIES (Details ) - shares | 12 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Mar. 31, 2024
Warrants [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Anti-dilutive effect on loss per share | 1,531,581 | 481,581 | 481,581
Stock Options [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Anti-dilutive effect on loss per share | 2,246,507 | 225,117 | 90,281
Restricted Stock Units [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Anti-dilutive effect on loss per share | 1,241,334 | 5,410 | 18,467

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- Definition Number of potential ordinary shares that are antidilutive in the period presented. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 33 -IssueDate 2025-01-01 -Paragraph 70 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2025-en-r&anchor=para_70_c&doctype=Standard -URIDate 2025-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_TypesOfAntidilutiveInstrumentsAxis=ptgef_StockOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_TypesOfAntidilutiveInstrumentsAxis=ptgef_RestrictedStockUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |