<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.24.0.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>560</ContextCount>
  <ElementCount>732</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>176</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>13</UnitCount>
  <MyReports>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>100010 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_StatementConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>100040 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>100050 - Statement - Consolidated Statements of Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/StatementConsolidatedStatementsOfLoss</Role>
      <ShortName>Consolidated Statements of Loss</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>100060 - Statement - Consolidated Statements of Loss (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/StatementConsolidatedStatementsOfLossParenthetical</Role>
      <ShortName>Consolidated Statements of Loss (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>100070 - Statement - Consolidated Statements of Comprehensive (Loss) Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveLossIncome</Role>
      <ShortName>Consolidated Statements of Comprehensive (Loss) Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>100080 - Statement - Consolidated Statements of Changes in Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/StatementConsolidatedStatementsOfChangesInEquity1</Role>
      <ShortName>Consolidated Statements of Changes in Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>100090 - Statement - Consolidated Statements of Changes in Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/StatementConsolidatedStatementsOfChangesInEquityParenthetical</Role>
      <ShortName>Consolidated Statements of Changes in Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>100100 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.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>10</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.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>11</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995455 - Disclosure - Nature of Business</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureNatureOfBusiness</Role>
      <ShortName>Nature of Business</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995465 - Disclosure - Business Combination Agreement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreement</Role>
      <ShortName>Business Combination Agreement</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Revenue</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenue</Role>
      <ShortName>Revenue</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Stock-Based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensation</Role>
      <ShortName>Stock-Based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Investments</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestments</Role>
      <ShortName>Investments</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Inventory</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInventory</Role>
      <ShortName>Inventory</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Property, Plant and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipment</Role>
      <ShortName>Property, Plant and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995525 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995535 - Disclosure - Goodwill</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureGoodwill</Role>
      <ShortName>Goodwill</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>995545 - Disclosure - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIntangibleAssets</Role>
      <ShortName>Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>995555 - Disclosure - Hedging</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureHedging1</Role>
      <ShortName>Hedging</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>995565 - Disclosure - Revolving Credit Agreements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRevolvingCreditAgreements1</Role>
      <ShortName>Revolving Credit Agreements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>995585 - Disclosure - Notes Payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNotesPayable1</Role>
      <ShortName>Notes Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995595 - Disclosure - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxes</Role>
      <ShortName>Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995605 - Disclosure - Employee Benefit Plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlans</Role>
      <ShortName>Employee Benefit Plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995615 - Disclosure - Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEquity</Role>
      <ShortName>Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>27</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995625 - Disclosure - Redeemable Non-controlling Interest</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRedeemableNoncontrollingInterest</Role>
      <ShortName>Redeemable Non-controlling Interest</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995635 - Disclosure - Segment Information and Major Customers</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSegmentInformationAndMajorCustomers</Role>
      <ShortName>Segment Information and Major Customers</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995645 - Disclosure - Liability for Warranty Returns</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLiabilityForWarrantyReturns1</Role>
      <ShortName>Liability for Warranty Returns</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995655 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995665 - Disclosure - Current Expected Credit Losses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureCurrentExpectedCreditLosses</Role>
      <ShortName>Current Expected Credit Losses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995675 - Disclosure - Loss per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLossPerShare</Role>
      <ShortName>Loss per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995685 - Disclosure - Restructuring</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRestructuring</Role>
      <ShortName>Restructuring</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995695 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995705 - Disclosure - Schedule II - Valuation and Qualifying Accounts</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureScheduleIIValuationAndQualifyingAccounts</Role>
      <ShortName>Schedule II - Valuation and Qualifying Accounts</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995715 - Disclosure - Nature of Business (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureNatureOfBusinessPolicies</Role>
      <ShortName>Nature of Business (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995725 - Disclosure - Nature of Business (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNatureOfBusinessTables</Role>
      <ShortName>Nature of Business (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureNatureOfBusiness</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995735 - Disclosure - Business Combination Agreement (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreementTables</Role>
      <ShortName>Business Combination Agreement (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreement</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995745 - Disclosure - Revenue (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenueTables</Role>
      <ShortName>Revenue (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenue</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995755 - Disclosure - Stock-Based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationTables</Role>
      <ShortName>Stock-Based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensation</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995765 - Disclosure - Investments (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsTables</Role>
      <ShortName>Investments (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestments</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995775 - Disclosure - Inventory (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInventoryTables</Role>
      <ShortName>Inventory (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInventory</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995785 - Disclosure - Property, Plant and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentTables</Role>
      <ShortName>Property, Plant and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipment</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995795 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeases</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995805 - Disclosure - Goodwill (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureGoodwillTables</Role>
      <ShortName>Goodwill (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureGoodwill</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995815 - Disclosure - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIntangibleAssetsTables</Role>
      <ShortName>Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIntangibleAssets</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995825 - Disclosure - Hedging (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureHedgingTables</Role>
      <ShortName>Hedging (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureHedging1</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995835 - Disclosure - Revolving Credit Agreements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRevolvingCreditAgreementsTables</Role>
      <ShortName>Revolving Credit Agreements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureRevolvingCreditAgreements1</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995845 - Disclosure - Notes Payable (Tables)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNotesPayableTables</Role>
      <ShortName>Notes Payable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureNotesPayable1</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995855 - Disclosure - Income Taxes (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesTables</Role>
      <ShortName>Income Taxes (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxes</ParentRole>
      <Position>51</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995865 - Disclosure - Employee Benefit Plans (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</Role>
      <ShortName>Employee Benefit Plans (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlans</ParentRole>
      <Position>52</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995875 - Disclosure - Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEquityTables</Role>
      <ShortName>Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureEquity</ParentRole>
      <Position>53</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995885 - Disclosure - Redeemable Non-controlling Interest (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRedeemableNoncontrollingInterestTables</Role>
      <ShortName>Redeemable Non-controlling Interest (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureRedeemableNoncontrollingInterest</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995895 - Disclosure - Segment Information and Major Customers (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSegmentInformationAndMajorCustomersTables</Role>
      <ShortName>Segment Information and Major Customers (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSegmentInformationAndMajorCustomers</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995905 - Disclosure - Liability for Warranty Returns (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLiabilityForWarrantyReturnsTables</Role>
      <ShortName>Liability for Warranty Returns (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureLiabilityForWarrantyReturns1</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995925 - Disclosure - Loss per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLossPerShareTables</Role>
      <ShortName>Loss per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/DisclosureLossPerShare</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995935 - Disclosure - Restructuring (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRestructuringTables</Role>
      <ShortName>Restructuring (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRestructuring</ParentRole>
      <Position>58</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995945 - Disclosure - Nature of Business - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureNatureOfBusinessAdditionalInformationDetail</Role>
      <ShortName>Nature of Business - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995955 - Disclosure - Nature of Business - Accounts Receivable - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNatureOfBusinessAccountsReceivableAdditionalInformationDetail</Role>
      <ShortName>Nature of Business - Accounts Receivable - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995965 - Disclosure - Nature of Business - Summary of Impact of Revision to Specific Line Items in Consolidated Balance Sheet and Consolidated Statement of Changes in Equity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNatureOfBusinessSummaryOfImpactOfRevisionToSpecificLineItemsInConsolidatedBalanceSheetAndConsolidatedStatementOfChangesInEqui</Role>
      <ShortName>Nature of Business - Summary of Impact of Revision to Specific Line Items in Consolidated Balance Sheet and Consolidated Statement of Changes in Equity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995975 - Disclosure - Nature of Business - Summary of Impact of Revision to Specific Line Items in Consolidated Statements of Comprehensive Loss (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNatureOfBusinessSummaryOfImpactOfRevisionToSpecificLineItemsInConsolidatedStatementsOfComprehensiveLossDetails</Role>
      <ShortName>Nature of Business - Summary of Impact of Revision to Specific Line Items in Consolidated Statements of Comprehensive Loss (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>995985 - Disclosure - Business Combination Agreement - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreementAdditionalInformationDetails</Role>
      <ShortName>Business Combination Agreement - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>995995 - Disclosure - Business Combination Agreement - Summary of Purchase Price for Business Combination (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreementSummaryOfPurchasePriceForBusinessCombinationDetails</Role>
      <ShortName>Business Combination Agreement - Summary of Purchase Price for Business Combination (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>996005 - Disclosure - Business Combination Agreement - Summary of Purchase Price Allocation of Assets Acquired and Liabilities Assumed (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreementSummaryOfPurchasePriceAllocationOfAssetsAcquiredAndLiabilitiesAssumedDetails</Role>
      <ShortName>Business Combination Agreement - Summary of Purchase Price Allocation of Assets Acquired and Liabilities Assumed (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>996015 - Disclosure - Business Combination Agreement - Summary of Fair Value of Intangible Assets Acquired (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreementSummaryOfFairValueOfIntangibleAssetsAcquiredDetails</Role>
      <ShortName>Business Combination Agreement - Summary of Fair Value of Intangible Assets Acquired (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>996025 - Disclosure - Business Combination Agreement - Summary of Unaudited Pro Forma Financial Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureBusinessCombinationAgreementSummaryOfUnauditedProFormaFinancialInformationDetails</Role>
      <ShortName>Business Combination Agreement - Summary of Unaudited Pro Forma Financial Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>996035 - Disclosure - Revenue - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenueAdditionalInformationDetail</Role>
      <ShortName>Revenue - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>996045 - Disclosure - Revenue - Disaggregate of Revenue by Reportable Segment and Revenue Category (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenueDisaggregateOfRevenueByReportableSegmentAndRevenueCategoryDetail</Role>
      <ShortName>Revenue - Disaggregate of Revenue by Reportable Segment and Revenue Category (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>996055 - Disclosure - Revenue - Additional Information (Detail1)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenueAdditionalInformationDetail1</Role>
      <ShortName>Revenue - Additional Information (Detail1)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>996065 - Disclosure - Revenue - Information about Receivable, Contract Assets, and Unearned Revenue from Contracts with Customers (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRevenueInformationAboutReceivableContractAssetsAndUnearnedRevenueFromContractsWithCustomersDetail</Role>
      <ShortName>Revenue - Information about Receivable, Contract Assets, and Unearned Revenue from Contracts with Customers (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>996075 - Disclosure - Stock-Based Compensation - Stock-Based Compensation Expense Related to Stock Options, PSUs, RSUs and Restricted Stock (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationStockBasedCompensationExpenseRelatedToStockOptionsPsusRsusAndRestrictedStockDetail</Role>
      <ShortName>Stock-Based Compensation - Stock-Based Compensation Expense Related to Stock Options, PSUs, RSUs and Restricted Stock (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>996085 - Disclosure - Stock-Based Compensation (Stock Incentive Program Descriptions) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationStockIncentiveProgramDescriptionsAdditionalInformationDetail</Role>
      <ShortName>Stock-Based Compensation (Stock Incentive Program Descriptions) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationTables</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>996095 - Disclosure - Stock-Based Compensation - Summary of PSUs, RSUs and Restricted Stock Outstanding (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfPsusRsusAndRestrictedStockOutstandingDetail</Role>
      <ShortName>Stock-Based Compensation - Summary of PSUs, RSUs and Restricted Stock Outstanding (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>996105 - Disclosure - Stock-Based Compensation - Summary of Weighted-Average Assumptions and Value of Options Granted (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfWeightedAverageAssumptionsAndValueOfOptionsGrantedDetail</Role>
      <ShortName>Stock-Based Compensation - Summary of Weighted-Average Assumptions and Value of Options Granted (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>996115 - Disclosure - Stock-Based Compensation (PSUs, RSUs and Restricted Stock) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationPsusRsusAndRestrictedStockAdditionalInformationDetail</Role>
      <ShortName>Stock-Based Compensation (PSUs, RSUs and Restricted Stock) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationTables</ParentRole>
      <Position>76</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>996125 - Disclosure - Stock-Based Compensation - Summary of Stock Options Outstanding (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationSummaryOfStockOptionsOutstandingDetail</Role>
      <ShortName>Stock-Based Compensation - Summary of Stock Options Outstanding (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>77</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R78.htm</HtmlFileName>
      <LongName>996145 - Disclosure - Stock-Based Compensation (Stock Options) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationStockOptionsAdditionalInformationDetail</Role>
      <ShortName>Stock-Based Compensation (Stock Options) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationTables</ParentRole>
      <Position>78</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R79.htm</HtmlFileName>
      <LongName>996155 - Disclosure - Stock-Based Compensation - Stock Options Outstanding (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureStockBasedCompensationStockOptionsOutstandingDetail</Role>
      <ShortName>Stock-Based Compensation - Stock Options Outstanding (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>79</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R80.htm</HtmlFileName>
      <LongName>996165 - Disclosure - Investments - Debt Securities and Other Investments, Included on Consolidated Balance Sheet and Recorded at Fair Value (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsDebtSecuritiesAndOtherInvestmentsIncludedOnConsolidatedBalanceSheetAndRecordedAtFairValueDetail</Role>
      <ShortName>Investments - Debt Securities and Other Investments, Included on Consolidated Balance Sheet and Recorded at Fair Value (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>80</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R81.htm</HtmlFileName>
      <LongName>996185 - Disclosure - Investments - Gross Realized Gains and Losses on Sale of Debt Securities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsGrossRealizedGainsAndLossesOnSaleOfDebtSecuritiesDetail</Role>
      <ShortName>Investments - Gross Realized Gains and Losses on Sale of Debt Securities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>81</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R82.htm</HtmlFileName>
      <LongName>996195 - Disclosure - Investments - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsAdditionalInformationDetail</Role>
      <ShortName>Investments - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>82</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R83.htm</HtmlFileName>
      <LongName>996205 - Disclosure - Investments - Breakdown of Investments with Unrealized Losses (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsBreakdownOfInvestmentsWithUnrealizedLossesDetail</Role>
      <ShortName>Investments - Breakdown of Investments with Unrealized Losses (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>83</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R84.htm</HtmlFileName>
      <LongName>996215 - Disclosure - Investments - Realized and Unrealized Gains and Losses for Marketable Equity Securities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsRealizedAndUnrealizedGainsAndLossesForMarketableEquitySecuritiesDetail</Role>
      <ShortName>Investments - Realized and Unrealized Gains and Losses for Marketable Equity Securities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>84</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R85.htm</HtmlFileName>
      <LongName>996225 - Disclosure - Investments - Cash Equivalents and Investments held at Fair Value (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInvestmentsCashEquivalentsAndInvestmentsHeldAtFairValueDetail</Role>
      <ShortName>Investments - Cash Equivalents and Investments held at Fair Value (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>85</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R86.htm</HtmlFileName>
      <LongName>996235 - Disclosure - Inventory - Components of Inventory (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureInventoryComponentsOfInventoryDetail</Role>
      <ShortName>Inventory - Components of Inventory (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>86</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R87.htm</HtmlFileName>
      <LongName>996245 - Disclosure - Inventory - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureInventoryAdditionalInformationDetail</Role>
      <ShortName>Inventory - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>87</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R88.htm</HtmlFileName>
      <LongName>996255 - Disclosure - Property, Plant and Equipment - Property, Plant and Equipment, Net (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentPropertyPlantAndEquipmentNetDetail</Role>
      <ShortName>Property, Plant and Equipment - Property, Plant and Equipment, Net (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>88</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R89.htm</HtmlFileName>
      <LongName>996275 - Disclosure - Property, Plant and Equipment - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosurePropertyPlantAndEquipmentAdditionalInformationDetail</Role>
      <ShortName>Property, Plant and Equipment - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>89</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R90.htm</HtmlFileName>
      <LongName>996285 - Disclosure - Leases - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeasesAdditionalInformationDetail</Role>
      <ShortName>Leases - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>90</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R91.htm</HtmlFileName>
      <LongName>996295 - Disclosure - Leases - Schedule of Supplemental Balance Sheet Information Related to Operating Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeasesScheduleOfSupplementalBalanceSheetInformationRelatedToOperatingLeasesDetails</Role>
      <ShortName>Leases - Schedule of Supplemental Balance Sheet Information Related to Operating Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>91</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R92.htm</HtmlFileName>
      <LongName>996305 - Disclosure - Leases - Components of Lease Expense included in Consolidated Statements of Loss (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLeasesComponentsOfLeaseExpenseIncludedInConsolidatedStatementsOfLossDetail</Role>
      <ShortName>Leases - Components of Lease Expense included in Consolidated Statements of Loss (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>92</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R93.htm</HtmlFileName>
      <LongName>996315 - Disclosure - Leases - Schedule of Maturity of Operating Lease Liabilities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeasesScheduleOfMaturityOfOperatingLeaseLiabilitiesDetail</Role>
      <ShortName>Leases - Schedule of Maturity of Operating Lease Liabilities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>93</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R94.htm</HtmlFileName>
      <LongName>996325 - Disclosure - Leases - Schedule of Weighted Average Remaining Lease Terms and Weighted Average Discount Rates (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureLeasesScheduleOfWeightedAverageRemainingLeaseTermsAndWeightedAverageDiscountRatesDetail</Role>
      <ShortName>Leases - Schedule of Weighted Average Remaining Lease Terms and Weighted Average Discount Rates (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>94</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R95.htm</HtmlFileName>
      <LongName>996365 - Disclosure - Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureGoodwillSummaryOfChangesInCarryingAmountOfGoodwillDetail</Role>
      <ShortName>Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>95</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R96.htm</HtmlFileName>
      <LongName>996375 - Disclosure - Goodwill - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureGoodwillAdditionalInformationDetail</Role>
      <ShortName>Goodwill - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>96</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R97.htm</HtmlFileName>
      <LongName>996385 - Disclosure - Intangible Assets - Summary of Intangible Assets (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIntangibleAssetsSummaryOfIntangibleAssetsDetail</Role>
      <ShortName>Intangible Assets - Summary of Intangible Assets (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>97</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R98.htm</HtmlFileName>
      <LongName>996395 - Disclosure - Intangible Assets - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIntangibleAssetsAdditionalInformationDetail</Role>
      <ShortName>Intangible Assets - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>98</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R99.htm</HtmlFileName>
      <LongName>996405 - Disclosure - Intangible Assets - Estimated Future Amortization Expense Related to Intangible Assets (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIntangibleAssetsEstimatedFutureAmortizationExpenseRelatedToIntangibleAssetsDetail</Role>
      <ShortName>Intangible Assets - Estimated Future Amortization Expense Related to Intangible Assets (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>99</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R100.htm</HtmlFileName>
      <LongName>996415 - Disclosure - Hedging - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureHedgingAdditionalInformationDetail</Role>
      <ShortName>Hedging - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>100</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R101.htm</HtmlFileName>
      <LongName>996425 - Disclosure - Hedging - Schedule of Fair Values of Derivative Instruments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureHedgingScheduleOfFairValuesOfDerivativeInstrumentsDetail</Role>
      <ShortName>Hedging - Schedule of Fair Values of Derivative Instruments (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>101</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R102.htm</HtmlFileName>
      <LongName>996435 - Disclosure - Revolving Credit Agreements - Carrying Amount of Revolving Agreements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRevolvingCreditAgreementsCarryingAmountOfRevolvingAgreementsDetails</Role>
      <ShortName>Revolving Credit Agreements - Carrying Amount of Revolving Agreements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>102</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R103.htm</HtmlFileName>
      <LongName>996445 - Disclosure - Revolving Credit Agreements - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRevolvingCreditAgreementsAdditionalInformationDetail</Role>
      <ShortName>Revolving Credit Agreements - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>103</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R104.htm</HtmlFileName>
      <LongName>996465 - Disclosure - Notes Payable - Carrying Amounts of Note Payables (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNotesPayableCarryingAmountsOfNotePayablesDetails</Role>
      <ShortName>Notes Payable - Carrying Amounts of Note Payables (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>104</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R105.htm</HtmlFileName>
      <LongName>996475 - Disclosure - Notes Payable - Additional Information (Details)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureNotesPayableAdditionalInformationDetails</Role>
      <ShortName>Notes Payable - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>105</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R106.htm</HtmlFileName>
      <LongName>996485 - Disclosure - Income Taxes - Summary of Components of Income Tax Expense (Benefit) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesSummaryOfComponentsOfIncomeTaxExpenseBenefitDetail</Role>
      <ShortName>Income Taxes - Summary of Components of Income Tax Expense (Benefit) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>106</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R107.htm</HtmlFileName>
      <LongName>996495 - Disclosure - Income Taxes - Effective Income Tax Rate Differs from Federal Statutory Rate (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesEffectiveIncomeTaxRateDiffersFromFederalStatutoryRateDetail</Role>
      <ShortName>Income Taxes - Effective Income Tax Rate Differs from Federal Statutory Rate (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>107</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R108.htm</HtmlFileName>
      <LongName>996505 - Disclosure - Income Taxes - Loss Before Expense (Benefit) for Income Taxes (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureIncomeTaxesLossBeforeExpenseBenefitForIncomeTaxesDetail</Role>
      <ShortName>Income Taxes - Loss Before Expense (Benefit) for Income Taxes (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>108</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R109.htm</HtmlFileName>
      <LongName>996515 - Disclosure - Income Taxes - Significant Components of Current and Non-current Deferred Taxes (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesSignificantComponentsOfCurrentAndNonCurrentDeferredTaxesDetail</Role>
      <ShortName>Income Taxes - Significant Components of Current and Non-current Deferred Taxes (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>109</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R110.htm</HtmlFileName>
      <LongName>996525 - Disclosure - Income Taxes - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesAdditionalInformationDetail</Role>
      <ShortName>Income Taxes - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>110</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R111.htm</HtmlFileName>
      <LongName>996535 - Disclosure - Income Taxes - Summary of Supplemental Balance Sheet Information Related to Deferred Tax Assets (Liabilities) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureIncomeTaxesSummaryOfSupplementalBalanceSheetInformationRelatedToDeferredTaxAssetsLiabilitiesDetail</Role>
      <ShortName>Income Taxes - Summary of Supplemental Balance Sheet Information Related to Deferred Tax Assets (Liabilities) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>111</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R112.htm</HtmlFileName>
      <LongName>996545 - Disclosure - Income Taxes - Change in Unrecognized Income Tax Benefits (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureIncomeTaxesChangeInUnrecognizedIncomeTaxBenefitsDetail</Role>
      <ShortName>Income Taxes - Change in Unrecognized Income Tax Benefits (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>112</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R113.htm</HtmlFileName>
      <LongName>996555 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Plan Obligations and Funded Status (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanScheduleOfPensionBenefitPlanObligationsAndFundedStatusDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Plan Obligations and Funded Status (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>113</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R114.htm</HtmlFileName>
      <LongName>996565 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Plan Obligations and Funded Status (Parenthetical) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEmployeeBenefitPlansPensionBenefitPlanScheduleOfPensionBenefitPlanObligationsAndFundedStatusParentheticalDetails</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Plan Obligations and Funded Status (Parenthetical) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>114</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R115.htm</HtmlFileName>
      <LongName>996575 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanAdditionalInformationDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>115</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R116.htm</HtmlFileName>
      <LongName>996585 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Summary of Net Amounts Recognized in Consolidated Balance Sheets for the Unfunded Pension Liability (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanSummaryOfNetAmountsRecognizedInConsolidatedBalanceSheetsForUnfundedPensionLiabilityDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Summary of Net Amounts Recognized in Consolidated Balance Sheets for the Unfunded Pension Liability (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>116</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R117.htm</HtmlFileName>
      <LongName>996595 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Components of Net Periodic Pension Cost and Amounts Recognized Other Comprehensive (Loss) Income (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEmployeeBenefitPlansPensionBenefitPlanComponentsOfNetPeriodicPensionCostAndAmountsRecognizedOtherComprehensiveLossIncomeDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Components of Net Periodic Pension Cost and Amounts Recognized Other Comprehensive (Loss) Income (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>117</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R118.htm</HtmlFileName>
      <LongName>996605 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Accumulated Other Comprehensive (Loss) Income (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEmployeeBenefitPlansPensionBenefitPlanAccumulatedOtherComprehensiveLossIncomeDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Accumulated Other Comprehensive (Loss) Income (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>118</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R119.htm</HtmlFileName>
      <LongName>996615 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanWeightedAverageAssumptionsUsedToDetermineNetPeriodicBenefitCostDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>119</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R120.htm</HtmlFileName>
      <LongName>996625 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Weighted-Average Assumptions Used to Determine Benefit Obligation (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanWeightedAverageAssumptionsUsedToDetermineBenefitObligationDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Weighted-Average Assumptions Used to Determine Benefit Obligation (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>120</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R121.htm</HtmlFileName>
      <LongName>996635 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Payments Expected Future Service (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanScheduleOfPensionBenefitPaymentsExpectedFutureServiceDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Schedule of Pension Benefit Payments Expected Future Service (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>121</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R122.htm</HtmlFileName>
      <LongName>996645 - Disclosure - Employee Benefit Plans (Pension Benefit Plan) - Schedule of Cash Equivalents and Investments Held at Fair Value (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansPensionBenefitPlanScheduleOfCashEquivalentsAndInvestmentsHeldAtFairValueDetail</Role>
      <ShortName>Employee Benefit Plans (Pension Benefit Plan) - Schedule of Cash Equivalents and Investments Held at Fair Value (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>122</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R123.htm</HtmlFileName>
      <LongName>996655 - Disclosure - Employee Benefit Plans (401(k) Savings Plans) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEmployeeBenefitPlans401kSavingsPlansAdditionalInformationDetail</Role>
      <ShortName>Employee Benefit Plans (401(k) Savings Plans) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>123</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R124.htm</HtmlFileName>
      <LongName>996665 - Disclosure - Employee Benefit Plans (Deferred Compensation Plans) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansDeferredCompensationPlansAdditionalInformationDetail</Role>
      <ShortName>Employee Benefit Plans (Deferred Compensation Plans) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>124</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R125.htm</HtmlFileName>
      <LongName>996675 - Disclosure - Employee Benefit Plans (Deferred Compensation Plans) - Fair Value of Assets Held by Trust and Amounts Payable to Plan Participants (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansDeferredCompensationPlansFairValueOfAssetsHeldByTrustAndAmountsPayableToPlanParticipantsDetail</Role>
      <ShortName>Employee Benefit Plans (Deferred Compensation Plans) - Fair Value of Assets Held by Trust and Amounts Payable to Plan Participants (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>125</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R126.htm</HtmlFileName>
      <LongName>996685 - Disclosure - Employee Benefit Plans (Retiree Medical Coverage) - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansRetireeMedicalCoverageAdditionalInformationDetail</Role>
      <ShortName>Employee Benefit Plans (Retiree Medical Coverage) - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureEmployeeBenefitPlansTables</ParentRole>
      <Position>126</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R127.htm</HtmlFileName>
      <LongName>996695 - Disclosure - Equity - Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax by Components of Accumulated Other Comprehensive Income (Loss) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEquityChangesInAccumulatedOtherComprehensiveIncomeLossNetOfTaxByComponentsOfAccumulatedOtherComprehensiveIncomeLossDetail</Role>
      <ShortName>Equity - Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax by Components of Accumulated Other Comprehensive Income (Loss) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>127</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R128.htm</HtmlFileName>
      <LongName>996705 - Disclosure - Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEquityReclassificationsOutOfAccumulatedOtherComprehensiveIncomeLossDetail</Role>
      <ShortName>Equity - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>128</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R129.htm</HtmlFileName>
      <LongName>996715 - Disclosure - Equity - Tax Effects Related to the Change in Each Component of Other Comprehensive Income (Loss) (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureEquityTaxEffectsRelatedToTheChangeInEachComponentOfOtherComprehensiveIncomeLossDetail</Role>
      <ShortName>Equity - Tax Effects Related to the Change in Each Component of Other Comprehensive Income (Loss) (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>129</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R130.htm</HtmlFileName>
      <LongName>996725 - Disclosure - Redeemable Non-controlling Interest - Summary of Redeemable Non-controlling Interest Activity (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRedeemableNoncontrollingInterestSummaryOfRedeemableNoncontrollingInterestActivityDetail</Role>
      <ShortName>Redeemable Non-controlling Interest - Summary of Redeemable Non-controlling Interest Activity (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>130</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R131.htm</HtmlFileName>
      <LongName>996735 - Disclosure - Redeemable Non-controlling Interest - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRedeemableNoncontrollingInterestAdditionalInformationDetail</Role>
      <ShortName>Redeemable Non-controlling Interest - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>131</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R132.htm</HtmlFileName>
      <LongName>996745 - Disclosure - Segment Information and Major Customers - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSegmentInformationAndMajorCustomersAdditionalInformationDetail</Role>
      <ShortName>Segment Information and Major Customers - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>132</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R133.htm</HtmlFileName>
      <LongName>996755 - Disclosure - Segment Information and Major Customers - Revenue and Gross Profit of Reportable Segments (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureSegmentInformationAndMajorCustomersRevenueAndGrossProfitOfReportableSegmentsDetail</Role>
      <ShortName>Segment Information and Major Customers - Revenue and Gross Profit of Reportable Segments (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>133</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R134.htm</HtmlFileName>
      <LongName>996765 - Disclosure - Segment Information and Major Customers - Disaggregation of Sales by Category (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSegmentInformationAndMajorCustomersDisaggregationOfSalesByCategoryDetail</Role>
      <ShortName>Segment Information and Major Customers - Disaggregation of Sales by Category (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>134</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R135.htm</HtmlFileName>
      <LongName>996775 - Disclosure - Segment Information and Major Customers - Revenue Information by Geographic Area (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureSegmentInformationAndMajorCustomersRevenueInformationByGeographicAreaDetail</Role>
      <ShortName>Segment Information and Major Customers - Revenue Information by Geographic Area (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>135</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R136.htm</HtmlFileName>
      <LongName>996785 - Disclosure - Liability for Warranty Returns - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLiabilityForWarrantyReturnsAdditionalInformationDetails</Role>
      <ShortName>Liability for Warranty Returns - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>136</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R137.htm</HtmlFileName>
      <LongName>996795 - Disclosure - Liability for Warranty Returns - Summary of Warranty Expense and Write-off Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLiabilityForWarrantyReturnsSummaryOfWarrantyExpenseAndWriteoffActivityDetails</Role>
      <ShortName>Liability for Warranty Returns - Summary of Warranty Expense and Write-off Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>137</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R138.htm</HtmlFileName>
      <LongName>996805 - Disclosure - Commitments and Contingencies - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureCommitmentsAndContingenciesAdditionalInformationDetail</Role>
      <ShortName>Commitments and Contingencies - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>138</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R139.htm</HtmlFileName>
      <LongName>996815 - Disclosure - Current Expected Credit Losses - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureCurrentExpectedCreditLossesAdditionalInformationDetail</Role>
      <ShortName>Current Expected Credit Losses - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>139</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R140.htm</HtmlFileName>
      <LongName>996835 - Disclosure - Loss per Share - Summary of Calculations of Basic and Diluted Loss Per Share (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLossPerShareSummaryOfCalculationsOfBasicAndDilutedLossPerShareDetail</Role>
      <ShortName>Loss per Share - Summary of Calculations of Basic and Diluted Loss Per Share (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>140</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R141.htm</HtmlFileName>
      <LongName>996845 - Disclosure - Loss per Share - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureLossPerShareAdditionalInformationDetail</Role>
      <ShortName>Loss per Share - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>141</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R142.htm</HtmlFileName>
      <LongName>996855 - Disclosure - Restructuring - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRestructuringAdditionalInformationDetail</Role>
      <ShortName>Restructuring - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>142</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R143.htm</HtmlFileName>
      <LongName>996865 - Disclosure - Restructuring - Schedule of Reconciliation of Restructuring Liability (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureRestructuringScheduleOfReconciliationOfRestructuringLiabilityDetail</Role>
      <ShortName>Restructuring - Schedule of Reconciliation of Restructuring Liability (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>143</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R144.htm</HtmlFileName>
      <LongName>996875 - Disclosure - Restructuring - Schedule of Components of Restructuring Expenses Included in Consolidated Statements of Loss (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRestructuringScheduleOfComponentsOfRestructuringExpensesIncludedInConsolidatedStatementsOfLossDetail</Role>
      <ShortName>Restructuring - Schedule of Components of Restructuring Expenses Included in Consolidated Statements of Loss (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>144</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R145.htm</HtmlFileName>
      <LongName>996885 - Disclosure - Restructuring - Schedule of Components of Restructuring Expenses by Geographic Area (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/DisclosureRestructuringScheduleOfComponentsOfRestructuringExpensesByGeographicAreaDetail</Role>
      <ShortName>Restructuring - Schedule of Components of Restructuring Expenses by Geographic Area (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>145</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R146.htm</HtmlFileName>
      <LongName>996895 - Disclosure - Subsequent Events - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureSubsequentEventsAdditionalInformationDetail</Role>
      <ShortName>Subsequent Events - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>146</Position>
    </Report>
    <Report instance="adtn-20231231.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R147.htm</HtmlFileName>
      <LongName>996905 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureScheduleIIValuationAndQualifyingAccountsDetail</Role>
      <ShortName>Schedule II - Valuation and Qualifying Accounts (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.adtran.com/20231231/taxonomy/role/Role_DisclosureScheduleIIValuationAndQualifyingAccounts</ParentRole>
      <Position>147</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" isDefinitelyFs="true" isUsgaap="true" original="adtn-20231231.htm">adtn-20231231.htm</File>
    <File>adtn-20231231.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>img228529070_0.jpg</File>
    <File>img228529070_1.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/srt/2023</BaseTaxonomy>
    <BaseTaxonomy items="1832">http://fasb.org/us-gaap/2023</BaseTaxonomy>
    <BaseTaxonomy items="39">http://xbrl.sec.gov/dei/2023</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2023</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
