<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>349</ContextCount>
  <ElementCount>321</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>75</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>0000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>9952151 - Statement - Unaudited Condensed Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedBalanceSheets</Role>
      <ShortName>Unaudited Condensed Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>9952152 - Statement - Unaudited Condensed Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Unaudited Condensed Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>9952153 - Statement - Unaudited Condensed Consolidated Statements of Income and Comprehensive Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedStatementsofIncomeandComprehensiveIncome</Role>
      <ShortName>Unaudited Condensed Consolidated Statements of Income and Comprehensive Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>9952154 - Statement - Unaudited Condensed Consolidated Statements of Income and Comprehensive Income (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedStatementsofIncomeandComprehensiveIncomeParenthetical</Role>
      <ShortName>Unaudited Condensed Consolidated Statements of Income and Comprehensive Income (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>9952155 - Statement - Unaudited Condensed Consolidated Statements of Changes in Stockholders’ Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedStatementsofChangesinStockholdersEquity</Role>
      <ShortName>Unaudited Condensed Consolidated Statements of Changes in Stockholders’ Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>9952156 - Statement - Unaudited Condensed Consolidated Statements of Changes in Stockholders’ Equity (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedStatementsofChangesinStockholdersEquityParenthetical</Role>
      <ShortName>Unaudited Condensed Consolidated Statements of Changes in Stockholders’ Equity (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>9952157 - Statement - Unaudited Condensed Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/UnauditedCondensedConsolidatedStatementsofCashFlows</Role>
      <ShortName>Unaudited Condensed Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>9952158 - Disclosure - The Company and Basis of Presentation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/TheCompanyandBasisofPresentation</Role>
      <ShortName>The Company and Basis of Presentation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>9952159 - Disclosure - Business Acquisitions</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/BusinessAcquisitions</Role>
      <ShortName>Business Acquisitions</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>9952160 - Disclosure - Investment in Equity Investees</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/InvestmentinEquityInvestees</Role>
      <ShortName>Investment in Equity Investees</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>9952161 - Disclosure - Property and Equipment, net</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/PropertyandEquipmentnet</Role>
      <ShortName>Property and Equipment, net</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>9952162 - Disclosure - Goodwill and Other Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssets</Role>
      <ShortName>Goodwill and Other Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>9952163 - Disclosure - Debt and Short-Term Borrowings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/DebtandShortTermBorrowings</Role>
      <ShortName>Debt and Short-Term Borrowings</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>9952164 - Disclosure - Financial Instruments and Fair Value Measurements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/FinancialInstrumentsandFairValueMeasurements</Role>
      <ShortName>Financial Instruments and Fair Value Measurements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>9952165 - Disclosure - Redeemable Noncontrolling Interests</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RedeemableNoncontrollingInterests</Role>
      <ShortName>Redeemable Noncontrolling Interests</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>9952166 - Disclosure - Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/Equity</Role>
      <ShortName>Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>9952167 - Disclosure - Share-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SharebasedCompensation</Role>
      <ShortName>Share-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>9952168 - Disclosure - Revenues</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/Revenues</Role>
      <ShortName>Revenues</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>9952169 - Disclosure - Current Expected Credit Losses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/CurrentExpectedCreditLosses</Role>
      <ShortName>Current Expected Credit Losses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>9952170 - Disclosure - Income Tax</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/IncomeTax</Role>
      <ShortName>Income Tax</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>9952171 - Disclosure - Net Income Per Common Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/NetIncomePerCommonShare</Role>
      <ShortName>Net Income Per Common Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>9952172 - Disclosure - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/CommitmentsandContingencies</Role>
      <ShortName>Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>9952173 - Disclosure - Segment Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SegmentInformation</Role>
      <ShortName>Segment Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>9952174 - Disclosure - Supplemental Statement of Cash Flows Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SupplementalStatementofCashFlowsInformation</Role>
      <ShortName>Supplemental Statement of Cash Flows Information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>9952175 - Disclosure - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SubsequentEvents</Role>
      <ShortName>Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>26</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.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>27</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>9955511 - Disclosure - The Company and Basis of Presentation (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/TheCompanyandBasisofPresentationPolicies</Role>
      <ShortName>The Company and Basis of Presentation (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>28</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>9955512 - Disclosure - Business Acquisitions (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/BusinessAcquisitionsTables</Role>
      <ShortName>Business Acquisitions (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/BusinessAcquisitions</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>9955513 - Disclosure - Property and Equipment, net (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/PropertyandEquipmentnetTables</Role>
      <ShortName>Property and Equipment, net (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/PropertyandEquipmentnet</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>9955514 - Disclosure - Goodwill and Other Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssetsTables</Role>
      <ShortName>Goodwill and Other Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssets</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>9955515 - Disclosure - Debt and Short-Term Borrowings (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/DebtandShortTermBorrowingsTables</Role>
      <ShortName>Debt and Short-Term Borrowings (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/DebtandShortTermBorrowings</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>9955516 - Disclosure - Financial Instruments and Fair Value Measurements (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/FinancialInstrumentsandFairValueMeasurementsTables</Role>
      <ShortName>Financial Instruments and Fair Value Measurements (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/FinancialInstrumentsandFairValueMeasurements</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>9955517 - Disclosure - Redeemable Noncontrolling Interests (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RedeemableNoncontrollingInterestsTables</Role>
      <ShortName>Redeemable Noncontrolling Interests (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/RedeemableNoncontrollingInterests</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>9955518 - Disclosure - Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/EquityTables</Role>
      <ShortName>Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/Equity</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>9955519 - Disclosure - Share-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SharebasedCompensationTables</Role>
      <ShortName>Share-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/SharebasedCompensation</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>9955520 - Disclosure - Revenues (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RevenuesTables</Role>
      <ShortName>Revenues (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/Revenues</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>9955521 - Disclosure - Current Expected Credit Losses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/CurrentExpectedCreditLossesTables</Role>
      <ShortName>Current Expected Credit Losses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/CurrentExpectedCreditLosses</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>9955522 - Disclosure - Net Income Per Common Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/NetIncomePerCommonShareTables</Role>
      <ShortName>Net Income Per Common Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/NetIncomePerCommonShare</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>9955523 - Disclosure - Segment Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SegmentInformationTables</Role>
      <ShortName>Segment Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/SegmentInformation</ParentRole>
      <Position>40</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>9955524 - Disclosure - Supplemental Statement of Cash Flows Information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SupplementalStatementofCashFlowsInformationTables</Role>
      <ShortName>Supplemental Statement of Cash Flows Information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/SupplementalStatementofCashFlowsInformation</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>9955525 - Disclosure - The Company and Basis of Presentation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/TheCompanyandBasisofPresentationAdditionalInformationDetails</Role>
      <ShortName>The Company and Basis of Presentation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>9955526 - Disclosure - Business Acquisitions - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/BusinessAcquisitionsAdditionalInformationDetails</Role>
      <ShortName>Business Acquisitions - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>9955527 - Disclosure - Business Acquisitions - Assets Acquired and Liabilities Assumed (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/BusinessAcquisitionsAssetsAcquiredandLiabilitiesAssumedDetails</Role>
      <ShortName>Business Acquisitions - Assets Acquired and Liabilities Assumed (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>9955528 - Disclosure - Business Acquisitions - Intangible Assets Acquired (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/BusinessAcquisitionsIntangibleAssetsAcquiredDetails</Role>
      <ShortName>Business Acquisitions - Intangible Assets Acquired (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>9955529 - Disclosure - Investment in Equity Investees (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/InvestmentinEquityInvesteesDetails</Role>
      <ShortName>Investment in Equity Investees (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/InvestmentinEquityInvestees</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>9955530 - Disclosure - Property and Equipment, net - Property and Equipment, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/PropertyandEquipmentnetPropertyandEquipmentNetDetails</Role>
      <ShortName>Property and Equipment, net - Property and Equipment, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>9955531 - Disclosure - Property and Equipment, net - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/PropertyandEquipmentnetAdditionalInformationDetails</Role>
      <ShortName>Property and Equipment, net - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>9955532 - Disclosure - Goodwill and Other Intangible Assets - Goodwill by Segment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssetsGoodwillbySegmentDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets - Goodwill by Segment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>9955533 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssetsAdditionalInformationDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>9955534 - Disclosure - Goodwill and Other Intangible Assets - Other Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssetsOtherIntangibleAssetsDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets - Other Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>9955535 - Disclosure - Goodwill and Other Intangible Assets - Estimated Amortization Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/GoodwillandOtherIntangibleAssetsEstimatedAmortizationExpensesDetails</Role>
      <ShortName>Goodwill and Other Intangible Assets - Estimated Amortization Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>9955536 - Disclosure - Debt and Short-Term Borrowings - Total Debt (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/DebtandShortTermBorrowingsTotalDebtDetails</Role>
      <ShortName>Debt and Short-Term Borrowings - Total Debt (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>9955537 - Disclosure - Debt and Short-Term Borrowings - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/DebtandShortTermBorrowingsAdditionalInformationDetails</Role>
      <ShortName>Debt and Short-Term Borrowings - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>9955538 - Disclosure - Debt and Short-Term Borrowings - Interest Rate Swaps (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/DebtandShortTermBorrowingsInterestRateSwapsDetails</Role>
      <ShortName>Debt and Short-Term Borrowings - Interest Rate Swaps (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>9955539 - Disclosure - Financial Instruments and Fair Value Measurements - Fair Value Measurements for Assets and Liabilities at Fair Value on Recurring Basis (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/FinancialInstrumentsandFairValueMeasurementsFairValueMeasurementsforAssetsandLiabilitiesatFairValueonRecurringBasisDetails</Role>
      <ShortName>Financial Instruments and Fair Value Measurements - Fair Value Measurements for Assets and Liabilities at Fair Value on Recurring Basis (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>9955540 - Disclosure - Financial Instruments and Fair Value Measurements - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/FinancialInstrumentsandFairValueMeasurementsAdditionalInformationDetails</Role>
      <ShortName>Financial Instruments and Fair Value Measurements - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>9955541 - Disclosure - Financial Instruments and Fair Value Measurements - Carrying Value and Estimated Fair Values (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/FinancialInstrumentsandFairValueMeasurementsCarryingValueandEstimatedFairValuesDetails</Role>
      <ShortName>Financial Instruments and Fair Value Measurements - Carrying Value and Estimated Fair Values (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>9955542 - Disclosure - Redeemable Noncontrolling Interests - Summary of Terms (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RedeemableNoncontrollingInterestsSummaryofTermsDetails</Role>
      <ShortName>Redeemable Noncontrolling Interests - Summary of Terms (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>9955543 - Disclosure - Redeemable Non-controlling Interests - Changes in Redeemable Non-controlling Interests (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RedeemableNoncontrollingInterestsChangesinRedeemableNoncontrollingInterestsDetails</Role>
      <ShortName>Redeemable Non-controlling Interests - Changes in Redeemable Non-controlling Interests (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>9955544 - Disclosure - Redeemable Non-controlling Interests - Narrative (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RedeemableNoncontrollingInterestsNarrativeDetails</Role>
      <ShortName>Redeemable Non-controlling Interests - Narrative (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>9955545 - Disclosure - Equity - Changes in Accumulated Other Comprehensive Loss (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/EquityChangesinAccumulatedOtherComprehensiveLossDetails</Role>
      <ShortName>Equity - Changes in Accumulated Other Comprehensive Loss (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>62</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>9955546 - Disclosure - Share-based Compensation - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SharebasedCompensationAdditionalInformationDetails</Role>
      <ShortName>Share-based Compensation - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>63</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>9955547 - Disclosure - Share-based Compensation - Nonvested Restricted Shares and RSUs Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SharebasedCompensationNonvestedRestrictedSharesandRSUsActivityDetails</Role>
      <ShortName>Share-based Compensation - Nonvested Restricted Shares and RSUs Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>9955548 - Disclosure - Revenues - Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RevenuesDisaggregationofRevenueDetails</Role>
      <ShortName>Revenues - Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>9955549 - Disclosure - Revenues - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RevenuesAdditionalInformationDetails</Role>
      <ShortName>Revenues - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>66</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>9955550 - Disclosure - Revenues - Additional Information, Performance Obligation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/RevenuesAdditionalInformationPerformanceObligationDetails</Role>
      <ShortName>Revenues - Additional Information, Performance Obligation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>9955551 - Disclosure - Current Expected Credit Losses - Allowance Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/CurrentExpectedCreditLossesAllowanceActivityDetails</Role>
      <ShortName>Current Expected Credit Losses - Allowance Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>68</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>9955552 - Disclosure - Income Tax - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/IncomeTaxAdditionalInformationDetails</Role>
      <ShortName>Income Tax - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>9955553 - Disclosure - Net Income Per Common Share - Reconciliation of Income Per Common Share (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/NetIncomePerCommonShareReconciliationofIncomePerCommonShareDetails</Role>
      <ShortName>Net Income Per Common Share - Reconciliation of Income Per Common Share (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>9955554 - Disclosure - Net Income Per Common Share - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/NetIncomePerCommonShareAdditionalInformationDetails</Role>
      <ShortName>Net Income Per Common Share - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>9955555 - Disclosure - Segment Information - Additional Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SegmentInformationAdditionalInformationDetails</Role>
      <ShortName>Segment Information - Additional Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>9955556 - Disclosure - Segment Information - Information about Operations by Business Segments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SegmentInformationInformationaboutOperationsbyBusinessSegmentsDetails</Role>
      <ShortName>Segment Information - Information about Operations by Business Segments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>73</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>9955557 - Disclosure - Segment Information - Reconciliation of Segment Adjusted EBITDA to Consolidated Income Before Income Taxes (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SegmentInformationReconciliationofSegmentAdjustedEBITDAtoConsolidatedIncomeBeforeIncomeTaxesDetails</Role>
      <ShortName>Segment Information - Reconciliation of Segment Adjusted EBITDA to Consolidated Income Before Income Taxes (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>74</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>9955558 - Disclosure - Supplemental Statement of Cash Flows Information - Supplemental Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SupplementalStatementofCashFlowsInformationSupplementalInformationDetails</Role>
      <ShortName>Supplemental Statement of Cash Flows Information - Supplemental Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>75</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>9955559 - Disclosure - Supplemental Statement of Cash Flows Information - Restricted Cash, and Cash Equivalents Reconciliation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SupplementalStatementofCashFlowsInformationRestrictedCashandCashEquivalentsReconciliationDetails</Role>
      <ShortName>Supplemental Statement of Cash Flows Information - Restricted Cash, and Cash Equivalents Reconciliation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="evtc-20260630.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>9955560 - Disclosure - Subsequent Events (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.evertecinc.com/role/SubsequentEventsDetails</Role>
      <ShortName>Subsequent Events (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.evertecinc.com/role/SubsequentEvents</ParentRole>
      <Position>77</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="evtc-20260630.htm">evtc-20260630.htm</File>
    <File>evtc-20260630.xsd</File>
    <File>evtc-20260630_cal.xml</File>
    <File>evtc-20260630_def.xml</File>
    <File>evtc-20260630_lab.xml</File>
    <File>evtc-20260630_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="1">http://fasb.org/srt/2026</BaseTaxonomy>
    <BaseTaxonomy items="966">http://fasb.org/us-gaap/2026</BaseTaxonomy>
    <BaseTaxonomy items="30">http://xbrl.sec.gov/dei/2026</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
