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        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001447028</identifier>
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        <period>
            <startDate>2026-06-05</startDate>
            <endDate>2026-06-05</endDate>
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    <context id="offrl_1">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001447028</identifier>
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            <startDate>2026-06-05</startDate>
            <endDate>2026-06-05</endDate>
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    <unit id="USD">
        <measure>iso4217:USD</measure>
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    <unit id="pure">
        <measure>pure</measure>
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    <unit id="Shares">
        <measure>shares</measure>
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    <ffd:FormTp contextRef="rc" id="ixv-168">S-8</ffd:FormTp>
    <ffd:SubmissnTp contextRef="rc" id="ixv-169">S-8</ffd:SubmissnTp>
    <ffd:FeeExhibitTp contextRef="rc" id="ixv-170">EX-FILING FEES</ffd:FeeExhibitTp>
    <dei:EntityCentralIndexKey contextRef="rc" id="ixv-171">0001447028</dei:EntityCentralIndexKey>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-172">Arbutus Biopharma Corp</dei:EntityRegistrantName>
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    <ffd:FormTp contextRef="rc" id="ixv-200">S-8</ffd:FormTp>
    <dei:EntityRegistrantName contextRef="rc" id="ixv-201">Arbutus Biopharma Corp</dei:EntityRegistrantName>
    <ffd:OfferingSctyTp contextRef="offrl_1" id="ixv-202">Equity</ffd:OfferingSctyTp>
    <ffd:OfferingSctyTitl contextRef="offrl_1" id="ixv-203">Common Shares, without par value, reserved for issuance under the Arbutus Biopharma Corporation 2026 Omnibus Share and Incentive Plan</ffd:OfferingSctyTitl>
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      contextRef="offrl_1"
      decimals="2"
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      unitRef="USD">69927000.00</ffd:MaxAggtOfferingPric>
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      decimals="2"
      id="ixv-209"
      unitRef="USD">9656.92</ffd:FeeAmt>
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    <ffd:OfferingNote contextRef="offrl_1" id="ixv-214">(a) In accordance with Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"), this registration statement shall be deemed to cover any additional securities that may from time to time be offered or issued to prevent dilution resulting from share splits, share dividends or similar transactions.

(b) The Amount Registered represents 16,300,000 common shares, without par value (the "Common Shares"), of Arbutus Biopharma Corporation (the "Registrant") available for issuance under the Arbutus Biopharma Corporation 2026 Omnibus Share and Incentive Plan, which Plan was approved by the Registrant's shareholders at the Registrant's 2026 Annual General and Special Meeting of Shareholders on May 26, 2026.

(c) The proposed Maximum Aggregate Offering Price per unit is estimated in accordance with Rule 457(c) and (h) of the Securities Act solely for purposes of calculating the registration fee based on the average of the high and low sales price per Common Share as reported on the Nasdaq Global Select Market on June 3, 2026, which date is a date within five business days of the filing of this registration statement.</ffd:OfferingNote>
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