<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>203</ContextCount>
  <ElementCount>267</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>64</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>9</UnitCount>
  <MyReports>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Cover Page</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CoverPage</Role>
      <ShortName>Cover Page</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUNAUDITEDParenthetical</Role>
      <ShortName>CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONSUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOMEUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952156 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFEQUITYUNAUDITED</Role>
      <ShortName>CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952157 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIES</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952158 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/RECENTACCOUNTINGPRONOUNCEMENTS</Role>
      <ShortName>RECENT ACCOUNTING PRONOUNCEMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952159 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERS</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952160 - Disclosure - FAIR VALUE MEASUREMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FAIRVALUEMEASUREMENTS</Role>
      <ShortName>FAIR VALUE MEASUREMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - INVENTORIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INVENTORIES</Role>
      <ShortName>INVENTORIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - GOODWILL AND INTANGIBLES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLES</Role>
      <ShortName>GOODWILL AND INTANGIBLES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952163 - Disclosure - OTHER LIABILITIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/OTHERLIABILITIES</Role>
      <ShortName>OTHER LIABILITIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - PRODUCT WARRANTIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/PRODUCTWARRANTIES</Role>
      <ShortName>PRODUCT WARRANTIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - FINANCING ARRANGEMENTS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FINANCINGARRANGEMENTS</Role>
      <ShortName>FINANCING ARRANGEMENTS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - COMMITMENTS AND CONTINGENCIES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/COMMITMENTSANDCONTINGENCIES</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>9952167 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSS</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>9952168 - Disclosure - INCOME TAXES</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INCOMETAXES</Role>
      <ShortName>INCOME TAXES</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9952169 - Disclosure - NET INCOME PER COMMON SHARE</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/NETINCOMEPERCOMMONSHARE</Role>
      <ShortName>NET INCOME PER COMMON SHARE</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9952170 - Disclosure - SEGMENT REPORTING</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/SEGMENTREPORTING</Role>
      <ShortName>SEGMENT REPORTING</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.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>22</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>9955511 - Disclosure - BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/BASISOFPRESENTATIONANDSIGNIFICANTACCOUNTINGPOLICIESPolicies</Role>
      <ShortName>BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9955512 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSTables</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERS</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9955513 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FAIRVALUEMEASUREMENTSTables</Role>
      <ShortName>FAIR VALUE MEASUREMENTS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/FAIRVALUEMEASUREMENTS</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9955514 - Disclosure - INVENTORIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INVENTORIESTables</Role>
      <ShortName>INVENTORIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/INVENTORIES</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>9955515 - Disclosure - GOODWILL AND INTANGIBLES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLESTables</Role>
      <ShortName>GOODWILL AND INTANGIBLES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLES</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9955516 - Disclosure - OTHER LIABILITIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/OTHERLIABILITIESTables</Role>
      <ShortName>OTHER LIABILITIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/OTHERLIABILITIES</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9955517 - Disclosure - PRODUCT WARRANTIES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/PRODUCTWARRANTIESTables</Role>
      <ShortName>PRODUCT WARRANTIES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/PRODUCTWARRANTIES</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9955518 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSTables</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSS</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9955519 - Disclosure - INCOME TAXES (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INCOMETAXESTables</Role>
      <ShortName>INCOME TAXES (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/INCOMETAXES</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>9955520 - Disclosure - NET INCOME PER COMMON SHARE (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/NETINCOMEPERCOMMONSHARETables</Role>
      <ShortName>NET INCOME PER COMMON SHARE (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/NETINCOMEPERCOMMONSHARE</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>9955521 - Disclosure - SEGMENT REPORTING (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/SEGMENTREPORTINGTables</Role>
      <ShortName>SEGMENT REPORTING (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/SEGMENTREPORTING</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9955522 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSNarrativeDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9955523 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Application (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSScheduleofDisaggregationofRevenueByApplicationDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Application (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9955524 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Product (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSScheduleofDisaggregationofRevenueByProductDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Product (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9955525 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Geography (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSScheduleofDisaggregationofRevenueByGeographyDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Geography (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9955526 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Timing (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSScheduleofDisaggregationofRevenueByTimingDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue, By Timing (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9955527 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Changes in Contract Assets and Contract Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSScheduleofChangesinContractAssetsandContractLiabilitiesDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Changes in Contract Assets and Contract Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9955528 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Remaining Performance Obligations (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/REVENUEFROMCONTRACTSWITHCUSTOMERSScheduleofRemainingPerformanceObligationsDetails</Role>
      <ShortName>REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Remaining Performance Obligations (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9955529 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FAIRVALUEMEASUREMENTSScheduleofAssetsandLiabilitiesMeasuredatFairValueDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured at Fair Value (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9955530 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FAIRVALUEMEASUREMENTSNarrativeDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9955531 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Effective Maturity Dates of Held to Maturity Investments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FAIRVALUEMEASUREMENTSScheduleofEffectiveMaturityDatesofHeldtoMaturityInvestmentsDetails</Role>
      <ShortName>FAIR VALUE MEASUREMENTS - Schedule of Effective Maturity Dates of Held to Maturity Investments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9955532 - Disclosure - INVENTORIES - Schedule of Components of Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INVENTORIESScheduleofComponentsofInventoriesDetails</Role>
      <ShortName>INVENTORIES - Schedule of Components of Inventories (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9955533 - Disclosure - INVENTORIES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INVENTORIESNarrativeDetails</Role>
      <ShortName>INVENTORIES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9955534 - Disclosure - GOODWILL AND INTANGIBLES - Schedule of Goodwill (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLESScheduleofGoodwillDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLES - Schedule of Goodwill (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9955535 - Disclosure - GOODWILL AND INTANGIBLES - Schedule of Intangible Assets, Subject to Amortization (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLESScheduleofIntangibleAssetsSubjecttoAmortizationDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLES - Schedule of Intangible Assets, Subject to Amortization (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9955536 - Disclosure - GOODWILL AND INTANGIBLES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLESNarrativeDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9955537 - Disclosure - GOODWILL AND INTANGIBLES - Schedule of Estimated Future Amortization for Intangibles (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/GOODWILLANDINTANGIBLESScheduleofEstimatedFutureAmortizationforIntangiblesDetails</Role>
      <ShortName>GOODWILL AND INTANGIBLES - Schedule of Estimated Future Amortization for Intangibles (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9955538 - Disclosure - OTHER LIABILITIES - Schedule of of Accrued Expenses and Other Current Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/OTHERLIABILITIESScheduleofofAccruedExpensesandOtherCurrentLiabilitiesDetails</Role>
      <ShortName>OTHER LIABILITIES - Schedule of of Accrued Expenses and Other Current Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9955539 - Disclosure - OTHER LIABILITIES - Schedule of Other Long-Term Liabilities and Deferred Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/OTHERLIABILITIESScheduleofOtherLongTermLiabilitiesandDeferredIncomeTaxesDetails</Role>
      <ShortName>OTHER LIABILITIES - Schedule of Other Long-Term Liabilities and Deferred Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9955540 - Disclosure - OTHER LIABILITIES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/OTHERLIABILITIESNarrativeDetails</Role>
      <ShortName>OTHER LIABILITIES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9955541 - Disclosure - PRODUCT WARRANTIES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/PRODUCTWARRANTIESNarrativeDetails</Role>
      <ShortName>PRODUCT WARRANTIES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9955542 - Disclosure - PRODUCT WARRANTIES - Schedule of Product Warranty Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/PRODUCTWARRANTIESScheduleofProductWarrantyActivityDetails</Role>
      <ShortName>PRODUCT WARRANTIES - Schedule of Product Warranty Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9955543 - Disclosure - FINANCING ARRANGEMENTS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/FINANCINGARRANGEMENTSDetails</Role>
      <ShortName>FINANCING ARRANGEMENTS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/FINANCINGARRANGEMENTS</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9955544 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/COMMITMENTSANDCONTINGENCIESDetails</Role>
      <ShortName>COMMITMENTS AND CONTINGENCIES (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/COMMITMENTSANDCONTINGENCIES</ParentRole>
      <Position>56</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9955545 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSDetails</Role>
      <ShortName>ACCUMULATED OTHER COMPREHENSIVE LOSS (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.ipgphotonics.com/role/ACCUMULATEDOTHERCOMPREHENSIVELOSSTables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9955546 - Disclosure - INCOME TAXES - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INCOMETAXESNarrativeDetails</Role>
      <ShortName>INCOME TAXES - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9955547 - Disclosure - INCOME TAXES - Schedule of Unrecognized Tax Benefits (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/INCOMETAXESScheduleofUnrecognizedTaxBenefitsDetails</Role>
      <ShortName>INCOME TAXES - Schedule of Unrecognized Tax Benefits (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>9955548 - Disclosure - NET INCOME PER COMMON SHARE - Schedule of Computation of Diluted Net Income Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/NETINCOMEPERCOMMONSHAREScheduleofComputationofDilutedNetIncomePerShareDetails</Role>
      <ShortName>NET INCOME PER COMMON SHARE - Schedule of Computation of Diluted Net Income Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>9955549 - Disclosure - NET INCOME PER COMMON SHARE - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/NETINCOMEPERCOMMONSHAREScheduleofAntidilutiveSecuritiesExcludedfromComputationofEarningsPerShareDetails</Role>
      <ShortName>NET INCOME PER COMMON SHARE - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>9955550 - Disclosure - NET INCOME PER COMMON SHARE - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/NETINCOMEPERCOMMONSHARENarrativeDetails</Role>
      <ShortName>NET INCOME PER COMMON SHARE - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>9955551 - Disclosure - SEGMENT REPORTING - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/SEGMENTREPORTINGNarrativeDetails</Role>
      <ShortName>SEGMENT REPORTING - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="ipgp-20260331.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>9955552 - Disclosure - SEGMENT REPORTING - Schedule of Net Income (Loss) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.ipgphotonics.com/role/SEGMENTREPORTINGScheduleofNetIncomeLossDetails</Role>
      <ShortName>SEGMENT REPORTING - Schedule of Net Income (Loss) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="ipgp-20260331.htm">ipgp-20260331.htm</File>
    <File>ipgp-20260331.xsd</File>
    <File>ipgp-20260331_cal.xml</File>
    <File>ipgp-20260331_def.xml</File>
    <File>ipgp-20260331_lab.xml</File>
    <File>ipgp-20260331_pre.xml</File>
  </InputFiles>
  <SupplementalFiles>
    <File>ipgp-20260331_g1.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/srt/2025</BaseTaxonomy>
    <BaseTaxonomy items="672">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="27">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
