<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.22.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>326</ContextCount>
  <ElementCount>594</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>111</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>12</UnitCount>
  <MyReports>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0001001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>0002002 - Document - Audit Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/AuditInformation</Role>
      <ShortName>Audit Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>1001003 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS and COMPREHENSIVE INCOME (LOSS)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSandCOMPREHENSIVEINCOMELOSS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS and COMPREHENSIVE INCOME (LOSS)</ShortName>
      <MenuCategory>Uncategorized</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>1002004 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS and COMPREHENSIVE INCOME (LOSS) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSandCOMPREHENSIVEINCOMELOSSParenthetical</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF OPERATIONS and COMPREHENSIVE INCOME (LOSS) (Parenthetical)</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>1003005 - Statement - CONSOLIDATED BALANCE SHEETS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CONSOLIDATEDBALANCESHEETS</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>1004006 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CONSOLIDATEDBALANCESHEETSParenthetical</Role>
      <ShortName>CONSOLIDATED BALANCE SHEETS (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>1005007 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS??? EQUITY (DEFICIT)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYDEFICIT</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF STOCKHOLDERS??? EQUITY (DEFICIT)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>1006008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS</Role>
      <ShortName>CONSOLIDATED STATEMENTS OF CASH FLOWS</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>2101101 - Disclosure - Description of Business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DescriptionofBusiness</Role>
      <ShortName>Description of Business</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>2103102 - Disclosure - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>2112103 - Disclosure - Reverse Recapitalization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ReverseRecapitalization</Role>
      <ShortName>Reverse Recapitalization</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>2117104 - Disclosure - Investment in Convertible Notes</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://accelentertainment.com/role/InvestmentinConvertibleNotes</Role>
      <ShortName>Investment in Convertible Notes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>2119105 - Disclosure - Property and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/PropertyandEquipment</Role>
      <ShortName>Property and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>2122106 - Disclosure - Route and Customer Acquisition Costs</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/RouteandCustomerAcquisitionCosts</Role>
      <ShortName>Route and Customer Acquisition Costs</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>2126107 - Disclosure - Location Contracts Acquired</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/LocationContractsAcquired</Role>
      <ShortName>Location Contracts Acquired</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>2131108 - Disclosure - Goodwill</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/Goodwill</Role>
      <ShortName>Goodwill</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>2135109 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/Debt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>2141110 - Disclosure - Business and Asset Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitions</Role>
      <ShortName>Business and Asset Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>2148111 - Disclosure - Contingent Earnout Share Liability</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ContingentEarnoutShareLiability</Role>
      <ShortName>Contingent Earnout Share Liability</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>2150112 - Disclosure - Warrant Liability</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/WarrantLiability</Role>
      <ShortName>Warrant Liability</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>2152113 - Disclosure - Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurements</Role>
      <ShortName>Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>2159114 - Disclosure - Stockholders??? Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockholdersEquity</Role>
      <ShortName>Stockholders??? Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>2163115 - Disclosure - Gaming Terminal Fees</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/GamingTerminalFees</Role>
      <ShortName>Gaming Terminal Fees</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>2165116 - Disclosure - Employee Benefit Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/EmployeeBenefitPlans</Role>
      <ShortName>Employee Benefit Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>2167117 - Disclosure - Stock-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensation</Role>
      <ShortName>Stock-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>2175118 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>2182119 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CommitmentsandContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>2186120 - Disclosure - Related-Party Transactions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/RelatedPartyTransactions</Role>
      <ShortName>Related-Party Transactions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>2188121 - Disclosure - Earnings Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/EarningsPerShare</Role>
      <ShortName>Earnings Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>2191122 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>2204201 - Disclosure - Summary of Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>2305301 - Disclosure - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesTables</Role>
      <ShortName>Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/SummaryofSignificantAccountingPolicies</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>2313302 - Disclosure - Reverse Recapitalization (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ReverseRecapitalizationTables</Role>
      <ShortName>Reverse Recapitalization (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/ReverseRecapitalization</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>2320303 - Disclosure - Property and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/PropertyandEquipmentTables</Role>
      <ShortName>Property and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/PropertyandEquipment</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>2323304 - Disclosure - Route and Customer Acquisition Costs (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/RouteandCustomerAcquisitionCostsTables</Role>
      <ShortName>Route and Customer Acquisition Costs (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/RouteandCustomerAcquisitionCosts</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>2327305 - Disclosure - Location Contracts Acquired (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/LocationContractsAcquiredTables</Role>
      <ShortName>Location Contracts Acquired (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/LocationContractsAcquired</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>2332306 - Disclosure - Goodwill (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/GoodwillTables</Role>
      <ShortName>Goodwill (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/Goodwill</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>2336307 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/Debt</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>2342308 - Disclosure - Business and Asset Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitionsTables</Role>
      <ShortName>Business and Asset Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/BusinessandAssetAcquisitions</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>2353309 - Disclosure - Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurementsTables</Role>
      <ShortName>Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/FairValueMeasurements</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>2360310 - Disclosure - Stockholders??? Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockholdersEquityTables</Role>
      <ShortName>Stockholders??? Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/StockholdersEquity</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>2368311 - Disclosure - Stock-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationTables</Role>
      <ShortName>Stock-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/StockbasedCompensation</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>2376312 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/IncomeTaxes</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>2383313 - Disclosure - Commitments and Contingencies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CommitmentsandContingenciesTables</Role>
      <ShortName>Commitments and Contingencies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/CommitmentsandContingencies</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>2389314 - Disclosure - Earnings Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/EarningsPerShareTables</Role>
      <ShortName>Earnings Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/EarningsPerShare</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>2402401 - Disclosure - Description of Business (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DescriptionofBusinessDetails</Role>
      <ShortName>Description of Business (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/DescriptionofBusiness</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>2406402 - Disclosure - Summary of Significant Accounting Policies - Adopted accounting pronouncements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesAdoptedaccountingpronouncementsDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Adopted accounting pronouncements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>2407403 - Disclosure - Summary of Significant Accounting Policies - Change in estimate (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesChangeinestimateDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Change in estimate (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>2408404 - Disclosure - Summary of Significant Accounting Policies - Schedule of property and equipment useful lives (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesScheduleofpropertyandequipmentusefullivesDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Schedule of property and equipment useful lives (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>2409405 - Disclosure - Summary of Significant Accounting Policies - Route and customer acquisition costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesRouteandcustomeracquisitioncostsDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Route and customer acquisition costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>2410406 - Disclosure - Summary of Significant Accounting Policies - Location contracts acquired (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesLocationcontractsacquiredDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Location contracts acquired (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>2411407 - Disclosure - Summary of Significant Accounting Policies - Advertising costs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SummaryofSignificantAccountingPoliciesAdvertisingcostsDetails</Role>
      <ShortName>Summary of Significant Accounting Policies - Advertising costs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>2414408 - Disclosure - Reverse Recapitalization - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ReverseRecapitalizationNarrativeDetails</Role>
      <ShortName>Reverse Recapitalization - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>2415409 - Disclosure - Reverse Recapitalization - Schedule of Proceeds from Reverse Capitalization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ReverseRecapitalizationScheduleofProceedsfromReverseCapitalizationDetails</Role>
      <ShortName>Reverse Recapitalization - Schedule of Proceeds from Reverse Capitalization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>2416410 - Disclosure - Reverse Recapitalization - Schedule of Equity Interests Issued from Reverse Capitalization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ReverseRecapitalizationScheduleofEquityInterestsIssuedfromReverseCapitalizationDetails</Role>
      <ShortName>Reverse Recapitalization - Schedule of Equity Interests Issued from Reverse Capitalization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>2418411 - Disclosure - Investment in Convertible Notes (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://accelentertainment.com/role/InvestmentinConvertibleNotesDetails</Role>
      <ShortName>Investment in Convertible Notes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/InvestmentinConvertibleNotes</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>2421412 - Disclosure - Property and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/PropertyandEquipmentDetails</Role>
      <ShortName>Property and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/PropertyandEquipmentTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>2424413 - Disclosure - Route and Customer Acquisition Costs - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/RouteandCustomerAcquisitionCostsNarrativeDetails</Role>
      <ShortName>Route and Customer Acquisition Costs - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>2425414 - Disclosure - Route and Customer Acquisition Costs - Schedule of Customer Contract Acquired (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/RouteandCustomerAcquisitionCostsScheduleofCustomerContractAcquiredDetails</Role>
      <ShortName>Route and Customer Acquisition Costs - Schedule of Customer Contract Acquired (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>2428415 - Disclosure - Location Contracts Acquired - Schedule of Customer Contract Acquired (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/LocationContractsAcquiredScheduleofCustomerContractAcquiredDetails</Role>
      <ShortName>Location Contracts Acquired - Schedule of Customer Contract Acquired (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>2429416 - Disclosure - Location Contracts Acquired - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/LocationContractsAcquiredAdditionalInformationDetails</Role>
      <ShortName>Location Contracts Acquired - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>2430417 - Disclosure - Location Contracts Acquired - Schedule of Finite-Lived Intangible Assets Amortization Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/LocationContractsAcquiredScheduleofFiniteLivedIntangibleAssetsAmortizationExpenseDetails</Role>
      <ShortName>Location Contracts Acquired - Schedule of Finite-Lived Intangible Assets Amortization Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>2433418 - Disclosure - Goodwill - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/GoodwillNarrativeDetails</Role>
      <ShortName>Goodwill - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>2434419 - Disclosure - Goodwill - Schedule of changes in Goodwill, Rollforward (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/GoodwillScheduleofchangesinGoodwillRollforwardDetails</Role>
      <ShortName>Goodwill - Schedule of changes in Goodwill, Rollforward (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>2437420 - Disclosure - Debt - Schedule of Long-term Debt Instruments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DebtScheduleofLongtermDebtInstrumentsDetails</Role>
      <ShortName>Debt - Schedule of Long-term Debt Instruments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>2438421 - Disclosure - Debt - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DebtNarrativeDetails</Role>
      <ShortName>Debt - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>2439422 - Disclosure - Debt - Schedule of Maturities of Long-term Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DebtScheduleofMaturitiesofLongtermDebtDetails</Role>
      <ShortName>Debt - Schedule of Maturities of Long-term Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>2440423 - Disclosure - Debt - Schedule of Carrying Value and Estimated Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/DebtScheduleofCarryingValueandEstimatedFairValueDetails</Role>
      <ShortName>Debt - Schedule of Carrying Value and Estimated Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>2443424 - Disclosure - Business and Asset Acquisitions - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitionsNarrativeDetails</Role>
      <ShortName>Business and Asset Acquisitions - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>2444425 - Disclosure - Business and Asset Acquisitions - Schedule of Consideration Transferred - AVG (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitionsScheduleofConsiderationTransferredAVGDetails</Role>
      <ShortName>Business and Asset Acquisitions - Schedule of Consideration Transferred - AVG (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>2445426 - Disclosure - Business and Asset Acquisitions - Schedule of Consideration Transferred - Grand River Jackpot (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitionsScheduleofConsiderationTransferredGrandRiverJackpotDetails</Role>
      <ShortName>Business and Asset Acquisitions - Schedule of Consideration Transferred - Grand River Jackpot (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>2446427 - Disclosure - Business and Asset Acquisitions - Schedule of Unaudited Pro Forma Results (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitionsScheduleofUnauditedProFormaResultsDetails</Role>
      <ShortName>Business and Asset Acquisitions - Schedule of Unaudited Pro Forma Results (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>2447428 - Disclosure - Business and Asset Acquisitions - Schedule of Consideration Payable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/BusinessandAssetAcquisitionsScheduleofConsiderationPayableDetails</Role>
      <ShortName>Business and Asset Acquisitions - Schedule of Consideration Payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>2449429 - Disclosure - Contingent Earnout Share Liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/ContingentEarnoutShareLiabilityDetails</Role>
      <ShortName>Contingent Earnout Share Liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/ContingentEarnoutShareLiability</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>2451430 - Disclosure - Warrant Liability (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/WarrantLiabilityDetails</Role>
      <ShortName>Warrant Liability (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/WarrantLiability</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>2454431 - Disclosure - Fair Value Measurements - Schedule of Fair Value Measurements, Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurementsScheduleofFairValueMeasurementsAssetsDetails</Role>
      <ShortName>Fair Value Measurements - Schedule of Fair Value Measurements, Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>2455432 - Disclosure - Fair Value Measurements - Schedule of Unobservable Input Asset Value Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurementsScheduleofUnobservableInputAssetValueReconciliationDetails</Role>
      <ShortName>Fair Value Measurements - Schedule of Unobservable Input Asset Value Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>2456433 - Disclosure - Fair Value Measurements - Schedule of Fair Value Measurements, Liabilities Measured on a Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurementsScheduleofFairValueMeasurementsLiabilitiesMeasuredonaRecurringBasisDetails</Role>
      <ShortName>Fair Value Measurements - Schedule of Fair Value Measurements, Liabilities Measured on a Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>78</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>2457434 - Disclosure - Fair Value Measurements - Schedule of Fair Value Measurements, Contingent Considerations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurementsScheduleofFairValueMeasurementsContingentConsiderationsDetails</Role>
      <ShortName>Fair Value Measurements - Schedule of Fair Value Measurements, Contingent Considerations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>2458435 - Disclosure - Fair Value Measurements - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/FairValueMeasurementsNarrativeDetails</Role>
      <ShortName>Fair Value Measurements - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>2461436 - Disclosure - Stockholders??? Equity - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockholdersEquityNarrativeDetails</Role>
      <ShortName>Stockholders??? Equity - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>2462437 - Disclosure - Stockholders??? Equity - Schedule of Stock Reserved for Issuance (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockholdersEquityScheduleofStockReservedforIssuanceDetails</Role>
      <ShortName>Stockholders??? Equity - Schedule of Stock Reserved for Issuance (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>2464438 - Disclosure - Gaming Terminal Fees (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/GamingTerminalFeesDetails</Role>
      <ShortName>Gaming Terminal Fees (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/GamingTerminalFees</ParentRole>
      <Position>83</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>2466439 - Disclosure - Employee Benefit Plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/EmployeeBenefitPlansDetails</Role>
      <ShortName>Employee Benefit Plans (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/EmployeeBenefitPlans</ParentRole>
      <Position>84</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>2469440 - Disclosure - Stock-based Compensation - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationNarrativeDetails</Role>
      <ShortName>Stock-based Compensation - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>2470441 - Disclosure - Stock-based Compensation - Schedule of Assumptions for Options Granted (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationScheduleofAssumptionsforOptionsGrantedDetails</Role>
      <ShortName>Stock-based Compensation - Schedule of Assumptions for Options Granted (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>2471442 - Disclosure - Stock-based Compensation - Summary of Options Granted and Range in Vesting Periods (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationSummaryofOptionsGrantedandRangeinVestingPeriodsDetails</Role>
      <ShortName>Stock-based Compensation - Summary of Options Granted and Range in Vesting Periods (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>2472443 - Disclosure - Stock-based Compensation - Schedule of Vested Stock Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationScheduleofVestedStockOptionsDetails</Role>
      <ShortName>Stock-based Compensation - Schedule of Vested Stock Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>2473444 - Disclosure - Stock-based Compensation - Summary of Nonvested Stock Options (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationSummaryofNonvestedStockOptionsDetails</Role>
      <ShortName>Stock-based Compensation - Summary of Nonvested Stock Options (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>2474445 - Disclosure - Stock-based Compensation - Schedule of Nonvested RSU Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/StockbasedCompensationScheduleofNonvestedRSUActivityDetails</Role>
      <ShortName>Stock-based Compensation - Schedule of Nonvested RSU Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>2477446 - Disclosure - Income Taxes - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxesNarrativeDetails</Role>
      <ShortName>Income Taxes - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>2478447 - Disclosure - Income Taxes - Schedule of Components of Income Tax Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxesScheduleofComponentsofIncomeTaxExpenseDetails</Role>
      <ShortName>Income Taxes - Schedule of Components of Income Tax Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>2479448 - Disclosure - Income Taxes - Reconciliation of Expected Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxesReconciliationofExpectedIncomeTaxesDetails</Role>
      <ShortName>Income Taxes - Reconciliation of Expected Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>2480449 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxesScheduleofDeferredTaxAssetsandLiabilitiesDetails</Role>
      <ShortName>Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>2481450 - Disclosure - Income Taxes - Summary of Carryforwards of Net Operating Losses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/IncomeTaxesSummaryofCarryforwardsofNetOperatingLossesDetails</Role>
      <ShortName>Income Taxes - Summary of Carryforwards of Net Operating Losses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>2484451 - Disclosure - Commitments and Contingencies - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CommitmentsandContingenciesNarrativeDetails</Role>
      <ShortName>Commitments and Contingencies - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>2485452 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Payments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/CommitmentsandContingenciesScheduleofFutureMinimumPaymentsDetails</Role>
      <ShortName>Commitments and Contingencies - Schedule of Future Minimum Payments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>2487453 - Disclosure - Related-Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/RelatedPartyTransactionsDetails</Role>
      <ShortName>Related-Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/RelatedPartyTransactions</ParentRole>
      <Position>98</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>2490454 - Disclosure - Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/EarningsPerShareDetails</Role>
      <ShortName>Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/EarningsPerShareTables</ParentRole>
      <Position>99</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>2492455 - Disclosure - Subsequent Events (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://accelentertainment.com/role/SubsequentEventsDetails</Role>
      <ShortName>Subsequent Events (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://accelentertainment.com/role/SubsequentEvents</ParentRole>
      <Position>100</Position>
    </Report>
    <Report instance="acel-20211231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9999.htm</HtmlFileName>
      <LongName>Uncategorized Items - acel-20211231.htm</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/role/uncategorizedFacts</Role>
      <ShortName>Uncategorized Items - acel-20211231.htm</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>101</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-K" original="acel-20211231.htm">acel-20211231.htm</File>
    <File>accelexhibit211-2021.htm</File>
    <File>accelexhibit23-2021.htm</File>
    <File>accelexhibit311-123121.htm</File>
    <File>accelexhibit312-123121.htm</File>
    <File>accelexhibit321-123121.htm</File>
    <File>accelexhibit322-123121.htm</File>
    <File>acel-20211231.xsd</File>
    <File>acel-20211231_cal.xml</File>
    <File>acel-20211231_def.xml</File>
    <File>acel-20211231_lab.xml</File>
    <File>acel-20211231_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>acel-20211231_g1.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="1088">http://fasb.org/us-gaap/2021-01-31</BaseTaxonomy>
    <BaseTaxonomy items="38">http://xbrl.sec.gov/dei/2021q4</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
