<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>26</ContextCount>
  <ElementCount>32</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>12</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>1</UnitCount>
  <MyReports>
    <Report instance="dal014970-def14a.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>00000001 - Document - Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://delta.com/role/Cover</Role>
      <ShortName>Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="dal014970-def14a.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="dal014970-def14a.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="dal014970-def14a.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>dal-20260618.xsd</File>
    <File>dal-20260618_def.xml</File>
    <File>dal-20260618_lab.xml</File>
    <File>dal-20260618_pre.xml</File>
    <File doctype="DEF 14A" isProxy="true" isUsgaap="true" original="dal014970-def14a.htm">dal014970-def14a.htm</File>
  </InputFiles>
  <SupplementalFiles>
    <File>dal014970-def14ax3x1.jpg</File>
    <File>dal014970-pcx1x1.jpg</File>
    <File>dal014970-pcx1x2.jpg</File>
    <File>dal014970-pcx2x1.jpg</File>
    <File>footer.jpg</File>
    <File>header.jpg</File>
    <File>pro014970-def14ax10x1.jpg</File>
    <File>pro014970-def14ax10x2.jpg</File>
    <File>pro014970-def14ax11x1.jpg</File>
    <File>pro014970-def14ax11x2.jpg</File>
    <File>pro014970-def14ax11x3.jpg</File>
    <File>pro014970-def14ax11x4.jpg</File>
    <File>pro014970-def14ax11x5.jpg</File>
    <File>pro014970-def14ax14x1.jpg</File>
    <File>pro014970-def14ax16x1.jpg</File>
    <File>pro014970-def14ax16x10.jpg</File>
    <File>pro014970-def14ax16x11.jpg</File>
    <File>pro014970-def14ax16x12.jpg</File>
    <File>pro014970-def14ax16x13.jpg</File>
    <File>pro014970-def14ax16x14.jpg</File>
    <File>pro014970-def14ax16x2.jpg</File>
    <File>pro014970-def14ax16x3.jpg</File>
    <File>pro014970-def14ax16x4.jpg</File>
    <File>pro014970-def14ax16x5.jpg</File>
    <File>pro014970-def14ax16x6.jpg</File>
    <File>pro014970-def14ax16x7.jpg</File>
    <File>pro014970-def14ax16x8.jpg</File>
    <File>pro014970-def14ax16x9.jpg</File>
    <File>pro014970-def14ax17x1.jpg</File>
    <File>pro014970-def14ax17x2.jpg</File>
    <File>pro014970-def14ax17x3.jpg</File>
    <File>pro014970-def14ax17x4.jpg</File>
    <File>pro014970-def14ax19x1.jpg</File>
    <File>pro014970-def14ax19x10.jpg</File>
    <File>pro014970-def14ax19x11.jpg</File>
    <File>pro014970-def14ax19x12.jpg</File>
    <File>pro014970-def14ax19x2.jpg</File>
    <File>pro014970-def14ax19x3.jpg</File>
    <File>pro014970-def14ax19x4.jpg</File>
    <File>pro014970-def14ax19x5.jpg</File>
    <File>pro014970-def14ax19x6.jpg</File>
    <File>pro014970-def14ax19x7.jpg</File>
    <File>pro014970-def14ax19x8.jpg</File>
    <File>pro014970-def14ax19x9.jpg</File>
    <File>pro014970-def14ax1x1.jpg</File>
    <File>pro014970-def14ax20x1.jpg</File>
    <File>pro014970-def14ax20x2.jpg</File>
    <File>pro014970-def14ax24x1.jpg</File>
    <File>pro014970-def14ax29x1.jpg</File>
    <File>pro014970-def14ax29x2.jpg</File>
    <File>pro014970-def14ax29x3.jpg</File>
    <File>pro014970-def14ax29x4.jpg</File>
    <File>pro014970-def14ax2x1.jpg</File>
    <File>pro014970-def14ax2x2.jpg</File>
    <File>pro014970-def14ax2x3.jpg</File>
    <File>pro014970-def14ax2x4.jpg</File>
    <File>pro014970-def14ax32x1.jpg</File>
    <File>pro014970-def14ax33x1.jpg</File>
    <File>pro014970-def14ax33x2.jpg</File>
    <File>pro014970-def14ax34x1.jpg</File>
    <File>pro014970-def14ax34x2.jpg</File>
    <File>pro014970-def14ax37x1.jpg</File>
    <File>pro014970-def14ax39x1.jpg</File>
    <File>pro014970-def14ax3x1.jpg</File>
    <File>pro014970-def14ax3x2.jpg</File>
    <File>pro014970-def14ax3x3.jpg</File>
    <File>pro014970-def14ax3x4.jpg</File>
    <File>pro014970-def14ax3x5.jpg</File>
    <File>pro014970-def14ax3x6.jpg</File>
    <File>pro014970-def14ax40x1.jpg</File>
    <File>pro014970-def14ax41x1.jpg</File>
    <File>pro014970-def14ax4x1.jpg</File>
    <File>pro014970-def14ax4x2.jpg</File>
    <File>pro014970-def14ax58x1.jpg</File>
    <File>pro014970-def14ax59x1.jpg</File>
    <File>pro014970-def14ax59x2.jpg</File>
    <File>pro014970-def14ax5x1.jpg</File>
    <File>pro014970-def14ax5x2.jpg</File>
    <File>pro014970-def14ax62x1.jpg</File>
    <File>pro014970-def14ax63x1.jpg</File>
    <File>pro014970-def14ax63x2.jpg</File>
    <File>pro014970-def14ax64x1.jpg</File>
    <File>pro014970-def14ax64x2.jpg</File>
    <File>pro014970-def14ax65x1.jpg</File>
    <File>pro014970-def14ax65x2.jpg</File>
    <File>pro014970-def14ax66x1.jpg</File>
    <File>pro014970-def14ax66x2.jpg</File>
    <File>pro014970-def14ax67x1.jpg</File>
    <File>pro014970-def14ax67x2.jpg</File>
    <File>pro014970-def14ax68x1.jpg</File>
    <File>pro014970-def14ax68x2.jpg</File>
    <File>pro014970-def14ax69x1.jpg</File>
    <File>pro014970-def14ax69x2.jpg</File>
    <File>pro014970-def14ax70x1.jpg</File>
    <File>pro014970-def14ax74x1.jpg</File>
    <File>pro014970-def14ax74x2.jpg</File>
    <File>pro014970-def14ax7x1.jpg</File>
    <File>pro014970-def14ax7x2.jpg</File>
    <File>pro014970-def14ax7x3.jpg</File>
    <File>pro014970-def14ax7x4.jpg</File>
    <File>pro014970-def14ax7x5.jpg</File>
    <File>pro014970-def14ax7x6.jpg</File>
    <File>pro014970-def14ax7x7.jpg</File>
    <File>pro014970-def14ax81x1.jpg</File>
    <File>pro014970-def14ax81x2.jpg</File>
    <File>pro014970-def14ax88x1.jpg</File>
    <File>pro014970-def14ax8x1.jpg</File>
    <File>pro014970-def14ax8x2.jpg</File>
    <File>pro014970-def14ax8x3.jpg</File>
    <File>pro014970-def14ax8x4.jpg</File>
    <File>pro014970-def14ax8x5.jpg</File>
    <File>pro014970-def14ax9x1.jpg</File>
    <File>pro014970-def14ax9x10.jpg</File>
    <File>pro014970-def14ax9x11.jpg</File>
    <File>pro014970-def14ax9x12.jpg</File>
    <File>pro014970-def14ax9x13.jpg</File>
    <File>pro014970-def14ax9x14.jpg</File>
    <File>pro014970-def14ax9x15.jpg</File>
    <File>pro014970-def14ax9x2.jpg</File>
    <File>pro014970-def14ax9x3.jpg</File>
    <File>pro014970-def14ax9x4.jpg</File>
    <File>pro014970-def14ax9x5.jpg</File>
    <File>pro014970-def14ax9x6.jpg</File>
    <File>pro014970-def14ax9x7.jpg</File>
    <File>pro014970-def14ax9x8.jpg</File>
    <File>pro014970-def14ax9x9.jpg</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="5">http://fasb.org/us-gaap/2026</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/dei/2026</BaseTaxonomy>
    <BaseTaxonomy items="82">http://xbrl.sec.gov/ecd/2026</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
