<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.4</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>172</ContextCount>
  <ElementCount>39</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>26</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>4</UnitCount>
  <MyReports>
    <Report instance="d70991ddef14a.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>995100 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/dei/role/document/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="d70991ddef14a.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.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>2</Position>
    </Report>
    <Report instance="d70991ddef14a.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>995443 - Disclosure - Award Timing Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/AwardTimingDisclosure</Role>
      <ShortName>Award Timing Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="d70991ddef14a.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>995447 - Disclosure - Insider Trading Policies and Procedures</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingPoliciesProc</Role>
      <ShortName>Insider Trading Policies and Procedures</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>4</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="DEF 14A" isProxy="true" isUsgaap="true" original="d70991ddef14a.htm">d70991ddef14a.htm</File>
    <File>tdy-20251228.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>g70991g07c01.jpg</File>
    <File>g70991g07c02.jpg</File>
    <File>g70991g07c03.jpg</File>
    <File>g70991g07y75.jpg</File>
    <File>g70991g09n01.jpg</File>
    <File>g70991g11x29.jpg</File>
    <File>g70991g18a01.jpg</File>
    <File>g70991g18a02.jpg</File>
    <File>g70991g18p02.jpg</File>
    <File>g70991g18p03.jpg</File>
    <File>g70991g18p04.jpg</File>
    <File>g70991g18p05.jpg</File>
    <File>g70991g18p06.jpg</File>
    <File>g70991g18p07.jpg</File>
    <File>g70991g18p08.jpg</File>
    <File>g70991g18p10.jpg</File>
    <File>g70991g18p11.jpg</File>
    <File>g70991g18s00.jpg</File>
    <File>g70991g23h11.jpg</File>
    <File>g70991g26a01.jpg</File>
    <File>g70991g26a02.jpg</File>
    <File>g70991g27a27.jpg</File>
    <File>g70991g27r95.jpg</File>
    <File>g70991g28k28.jpg</File>
    <File>g70991g29g29.jpg</File>
    <File>g70991g30a01.jpg</File>
    <File>g70991g30k30.jpg</File>
    <File>g70991g33a01.jpg</File>
    <File>g70991g43v43.jpg</File>
    <File>g70991g48n58.jpg</File>
    <File>g70991g68a01.jpg</File>
    <File>g70991g75v22.jpg</File>
    <File>g70991g88j56.jpg</File>
    <File>g70991g92j70.jpg</File>
    <File>g70991g93m93.jpg</File>
    <File>g70991g95b29.jpg</File>
    <File>g70991page016.jpg</File>
    <File>g70991page017.jpg</File>
    <File>g70991page018.jpg</File>
    <File>g70991page019.jpg</File>
    <File>g70991page020.jpg</File>
    <File>g70991page021.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="5">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="282">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
