<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.3</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>340</ContextCount>
  <ElementCount>300</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>78</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>75000 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>75010 - Statement - Condensed Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/CondensedConsolidatedBalanceSheets</Role>
      <ShortName>Condensed Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>75020 - Statement - Consolidated Statements of Income (Loss) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/StatementConsolidatedStatementsOfIncomeLossUnaudited</Role>
      <ShortName>Consolidated Statements of Income (Loss) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>75030 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeLossUnaudited</Role>
      <ShortName>Consolidated Statements of Comprehensive Income (Loss) (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>75040 - Statement - Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncomeLossUnauditedParenthetical</Role>
      <ShortName>Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>75050 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/StatementCondensedConsolidatedStatementsOfCashFlowsUnaudited</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>75060 - Statement - Consolidated Statements of Stockholders??? Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/ConsolidatedStatementsofStockholdersEquityUnaudited</Role>
      <ShortName>Consolidated Statements of Stockholders??? Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>75070 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/ConsolidatedStatementsofStockholdersEquityParenthetical</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995455 - Disclosure - Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/BasisofPresentation</Role>
      <ShortName>Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Recent Accounting Pronouncements and Adopted Accounting Standards</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/RecentAccountingPronouncementsandAdoptedAccountingStandards</Role>
      <ShortName>Recent Accounting Pronouncements and Adopted Accounting Standards</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/Acquisitions</Role>
      <ShortName>Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Long-term Debt and Short-term Borrowings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowings1</Role>
      <ShortName>Long-term Debt and Short-term Borrowings</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/Leases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Pension and Other Retiree Benefits</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/PensionandOtherRetireeBenefits</Role>
      <ShortName>Pension and Other Retiree Benefits</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Stock-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/StockBasedCompensation</Role>
      <ShortName>Stock-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995525 - Disclosure - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/Inventories</Role>
      <ShortName>Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995535 - Disclosure - Goodwill and Identifiable Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/GoodwillandIdentifiableIntangibleAssets</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995545 - Disclosure - Restructuring</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/Restructuring</Role>
      <ShortName>Restructuring</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995555 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995565 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureEarningsPerShare1</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995575 - Disclosure - Derivative Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DerivativeFinancialInstruments</Role>
      <ShortName>Derivative Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995585 - Disclosure - Fair Value of Financial Instruments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/FairValueofFinancialInstruments</Role>
      <ShortName>Fair Value of Financial Instruments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995595 - Disclosure - Accumulated Other Comprehensive Income (Loss)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/AccumulatedOtherComprehensiveIncomeLoss</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss)</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995605 - Disclosure - Revenue Recognition</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/RevenueRecognition</Role>
      <ShortName>Revenue Recognition</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995615 - Disclosure - Information on Operating Segments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegments</Role>
      <ShortName>Information on Operating Segments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995625 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/CommitmentsandContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995635 - Disclosure - Recent Accounting Pronouncements and Adopted Accounting Standards (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRecentAccountingPronouncementsAndAdoptedAccountingStandardsPolicies</Role>
      <ShortName>Recent Accounting Pronouncements and Adopted Accounting Standards (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/RecentAccountingPronouncementsandAdoptedAccountingStandards</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995645 - Disclosure - Long-term Debt and Short-term Borrowings (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowingsTables</Role>
      <ShortName>Long-term Debt and Short-term Borrowings (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowings1</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995655 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/LeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/Leases</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995665 - Disclosure - Pension and Other Retiree Benefits (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/PensionandOtherRetireeBenefitsTables</Role>
      <ShortName>Pension and Other Retiree Benefits (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/PensionandOtherRetireeBenefits</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995675 - Disclosure - Stock-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/StockBasedCompensationTables</Role>
      <ShortName>Stock-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/StockBasedCompensation</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995685 - Disclosure - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/InventoriesTables</Role>
      <ShortName>Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/Inventories</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995695 - Disclosure - Goodwill and Identifiable Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/GoodwillandIdentifiableIntangibleAssetsTables</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/GoodwillandIdentifiableIntangibleAssets</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995705 - Disclosure - Restructuring (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/RestructuringTables</Role>
      <ShortName>Restructuring (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/Restructuring</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995715 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureEarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/DisclosureEarningsPerShare1</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995725 - Disclosure - Derivative Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DerivativeFinancialInstrumentsTables</Role>
      <ShortName>Derivative Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/DerivativeFinancialInstruments</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995735 - Disclosure - Fair Value of Financial Instruments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsTables</Role>
      <ShortName>Fair Value of Financial Instruments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/FairValueofFinancialInstruments</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995745 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/AccumulatedOtherComprehensiveIncomeLossTables</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/AccumulatedOtherComprehensiveIncomeLoss</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995755 - Disclosure - Revenue Recognition (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/RevenueRecognitionTables</Role>
      <ShortName>Revenue Recognition (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/RevenueRecognition</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995765 - Disclosure - Information on Operating Segments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsTables</Role>
      <ShortName>Information on Operating Segments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegments</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995785 - Disclosure - Acquisitions - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureAcquisitionsNarrativeDetails</Role>
      <ShortName>Acquisitions - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995795 - Disclosure - Long-term Debt and Short-term Borrowings - Summary of Notes Payable and Long-Term Debt (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowingsSummaryOfNotesPayableAndLongtermDebtDetails</Role>
      <ShortName>Long-term Debt and Short-term Borrowings - Summary of Notes Payable and Long-Term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995805 - Disclosure - Long-term Debt and Short-term Borrowings - Summary of Notes Payable and Long-Term Debt (Parenthetical) (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowingsSummaryOfNotesPayableAndLongtermDebtParentheticalDetails</Role>
      <ShortName>Long-term Debt and Short-term Borrowings - Summary of Notes Payable and Long-Term Debt (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995815 - Disclosure - Long-term Debt and Short-term Borrowings - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowingsNarrativeDetails</Role>
      <ShortName>Long-term Debt and Short-term Borrowings - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995835 - Disclosure - Long-term Debt and Short-term Borrowings - Schedule of Maximum Consolidated Leverage Ratio (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowingsScheduleOfMaximumConsolidatedLeverageRatioDetails</Role>
      <ShortName>Long-term Debt and Short-term Borrowings - Schedule of Maximum Consolidated Leverage Ratio (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995845 - Disclosure - Long-term Debt and Short-term Borrowings - Schedule of Applicable Rate and Undrawn Fee Based on Company's Consolidated Leverage Ratio (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLongtermDebtAndShorttermBorrowingsScheduleOfApplicableRateAndUndrawnFeeBasedOnCompanysConsolidatedLeverageRatioDetails</Role>
      <ShortName>Long-term Debt and Short-term Borrowings - Schedule of Applicable Rate and Undrawn Fee Based on Company's Consolidated Leverage Ratio (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995855 - Disclosure - Leases - Components of Lease Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLeasesComponentsOfLeaseExpenseDetails</Role>
      <ShortName>Leases - Components of Lease Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995865 - Disclosure - Leases - Summary of Other Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLeasesSummaryOfOtherInformationDetails</Role>
      <ShortName>Leases - Summary of Other Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995875 - Disclosure - Leases - Schedule of Future Minimum Lease Payments, Net of Sublease Income (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureLeasesScheduleOfFutureMinimumLeasePaymentsNetOfSubleaseIncomeDetails3</Role>
      <ShortName>Leases - Schedule of Future Minimum Lease Payments, Net of Sublease Income (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995895 - Disclosure - Pension and Other Retiree Benefits - Net Periodic Benefit Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosurePensionAndOtherRetireeBenefitsNetPeriodicBenefitExpenseDetails</Role>
      <ShortName>Pension and Other Retiree Benefits - Net Periodic Benefit Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995905 - Disclosure - Pension and Other Retiree Benefits - Net Periodic Benefit Expense (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosurePensionAndOtherRetireeBenefitsNetPeriodicBenefitExpenseParentheticalDetails</Role>
      <ShortName>Pension and Other Retiree Benefits - Net Periodic Benefit Expense (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995915 - Disclosure - Pension and Other Retiree Benefits - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosurePensionAndOtherRetireeBenefitsNarrativeDetails</Role>
      <ShortName>Pension and Other Retiree Benefits - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995925 - Disclosure - Stock-Based Compensation - Share-based Compensation Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureStockbasedCompensationSharebasedCompensationExpenseDetails</Role>
      <ShortName>Stock-Based Compensation - Share-based Compensation Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995935 - Disclosure - Stock-Based Compensation - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureStockbasedCompensationNarrativeDetails</Role>
      <ShortName>Stock-Based Compensation - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995945 - Disclosure - Stock-Based Compensation - Unrecognized Compensation Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureStockbasedCompensationUnrecognizedCompensationExpenseDetails</Role>
      <ShortName>Stock-Based Compensation - Unrecognized Compensation Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995955 - Disclosure - Inventories - Components of Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInventoriesComponentsOfInventoriesDetails</Role>
      <ShortName>Inventories - Components of Inventories (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995965 - Disclosure - Goodwill and Identifiable Intangible Assets - Summary of Changes in Net Carrying Amount Goodwill By Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureGoodwillAndIdentifiableIntangibleAssetsSummaryOfChangesInNetCarryingAmountGoodwillBySegmentDetails</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets - Summary of Changes in Net Carrying Amount Goodwill By Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995975 - Disclosure - Goodwill and Identifiable Intangible Assets - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureGoodwillAndIdentifiableIntangibleAssetsNarrativeDetails</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995985 - Disclosure - Goodwill and Identifiable Intangible Assets - Summary of Gross Carrying Value and Accumulated Amortization By Class of Identifiable Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureGoodwillAndIdentifiableIntangibleAssetsSummaryOfGrossCarryingValueAndAccumulatedAmortizationByClassOfIdentifiableIntangibleAssets</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets - Summary of Gross Carrying Value and Accumulated Amortization By Class of Identifiable Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995995 - Disclosure - Goodwill and Identifiable Intangible Assets - Amortization Expense and Estimated Future Amortization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureGoodwillAndIdentifiableIntangibleAssetsAmortizationExpenseAndEstimatedFutureAmortizationDetails</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets - Amortization Expense and Estimated Future Amortization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>996005 - Disclosure - Goodwill and Identifiable Intangible Assets - Schedule of Acquired Identifiable Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureGoodwillAndIdentifiableIntangibleAssetsScheduleOfAcquiredIdentifiableIntangibleAssetsDetails</Role>
      <ShortName>Goodwill and Identifiable Intangible Assets - Schedule of Acquired Identifiable Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>996015 - Disclosure - Restructuring - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRestructuringNarrativeDetails</Role>
      <ShortName>Restructuring - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>996025 - Disclosure - Restructuring - Summary of Activity in Restructuring Liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRestructuringSummaryOfActivityInRestructuringLiabilityDetails</Role>
      <ShortName>Restructuring - Summary of Activity in Restructuring Liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>996035 - Disclosure - Restructuring - Summary of Activity in Restructuring Liability (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRestructuringSummaryOfActivityInRestructuringLiabilityParentheticalDetails</Role>
      <ShortName>Restructuring - Summary of Activity in Restructuring Liability (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>996045 - Disclosure - Income Taxes - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureIncomeTaxesNarrativeDetails</Role>
      <ShortName>Income Taxes - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>996055 - Disclosure - Earnings Per Share - Summary of Computation of Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureEarningsPerShareSummaryOfComputationOfEarningsPerShareDetails</Role>
      <ShortName>Earnings Per Share - Summary of Computation of Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>996065 - Disclosure - Earnings Per Share - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureEarningsPerShareNarrativeDetails</Role>
      <ShortName>Earnings Per Share - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>996075 - Disclosure - Derivative Financial Instruments - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureDerivativeFinancialInstrumentsNarrativeDetails</Role>
      <ShortName>Derivative Financial Instruments - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>996085 - Disclosure - Derivative Financial Instruments - Fair Value of Derivative Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureDerivativeFinancialInstrumentsFairValueOfDerivativeInstrumentsDetails</Role>
      <ShortName>Derivative Financial Instruments - Fair Value of Derivative Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>996095 - Disclosure - Derivative Financial Instruments - Effect of Derivative Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureDerivativeFinancialInstrumentsEffectOfDerivativeInstrumentsDetails</Role>
      <ShortName>Derivative Financial Instruments - Effect of Derivative Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>996105 - Disclosure - Fair Value of Financial Instruments - Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsScheduleOfFairValueOfAssetsAndLiabilitiesMeasuredOnARecurringBasisDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Schedule of Fair Value of Assets and Liabilities Measured on a Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>996115 - Disclosure - Fair Value of Financial Instruments - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureFairValueOfFinancialInstrumentsNarrativeDetails</Role>
      <ShortName>Fair Value of Financial Instruments - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>996125 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossScheduleOfAccumulatedOtherComprehensiveIncomeLossDetails</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/AccumulatedOtherComprehensiveIncomeLossTables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>996135 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Reclassification out of AOCI (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossReclassificationOutOfAociDetails</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) - Reclassification out of AOCI (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/AccumulatedOtherComprehensiveIncomeLossTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>996145 - Disclosure - Accumulated Other Comprehensive Income (Loss) - Reclassification out of AOCI (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureAccumulatedOtherComprehensiveIncomeLossReclassificationOutOfAociParentheticalDetails</Role>
      <ShortName>Accumulated Other Comprehensive Income (Loss) - Reclassification out of AOCI (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.accobrands.com/20250930/taxonomy/role/AccumulatedOtherComprehensiveIncomeLossTables</ParentRole>
      <Position>77</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>996155 - Disclosure - Revenue Recognition - Service or Extended Maintenance Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRevenueRecognitionServiceOrExtendedMaintenanceAgreementsDetails</Role>
      <ShortName>Revenue Recognition - Service or Extended Maintenance Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>996165 - Disclosure - Revenue Recognition - Unearned Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRevenueRecognitionUnearnedRevenueDetails</Role>
      <ShortName>Revenue Recognition - Unearned Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>996175 - Disclosure - Revenue Recognition - Schedule of Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureRevenueRecognitionScheduleOfDisaggregationOfRevenueDetails</Role>
      <ShortName>Revenue Recognition - Schedule of Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>996185 - Disclosure - Information on Operating Segments - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsNarrativeDetails</Role>
      <ShortName>Information on Operating Segments - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>996195 - Disclosure - Information on Operating Segments - Schedule of Operating Results for Operating Segments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsScheduleOfOperatingResultsForOperatingSegmentsDetails</Role>
      <ShortName>Information on Operating Segments - Schedule of Operating Results for Operating Segments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>996205 - Disclosure - Information on Operating Segments - Assets by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsAssetsBySegmentDetails</Role>
      <ShortName>Information on Operating Segments - Assets by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>996215 - Disclosure - Information on Operating Segments - Property, Plant and Equipment by Geographic Region (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsPropertyPlantAndEquipmentByGeographicRegionDetails</Role>
      <ShortName>Information on Operating Segments - Property, Plant and Equipment by Geographic Region (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>996225 - Disclosure - Information on Operating Segments - Capital Spend by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsCapitalSpendBySegmentDetails</Role>
      <ShortName>Information on Operating Segments - Capital Spend by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="acco-20250930.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>996235 - Disclosure - Information on Operating Segments - Depreciation Expense by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.accobrands.com/20250930/taxonomy/role/DisclosureInformationOnOperatingSegmentsDepreciationExpenseBySegmentDetails</Role>
      <ShortName>Information on Operating Segments - Depreciation Expense by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="acco-20250930.htm">acco-20250930.htm</File>
    <File>acco-20250930.xsd</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="1135">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="5">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
