<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>302</ContextCount>
  <ElementCount>27</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>108</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>3</UnitCount>
  <MyReports>
    <Report instance="d116898dncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>030000 - Disclosure - Form N-CSR Cover</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/oef/role/NcsrCover</Role>
      <ShortName>Form N-CSR Cover</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="d116898dncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>030001 - Disclosure - Shareholder Report</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/oef/role/ShareholderReport</Role>
      <ShortName>Shareholder Report</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="d116898dncsrs.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>040020 - Disclosure - Shareholder Report, Holdings (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/oef/role/ShareholderReportHoldingsDetails</Role>
      <ShortName>Shareholder Report, Holdings (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>3</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="N-CSRS" isDefinitelyNotFs="true" isNcsr="true" isOEF="true" isRRorOEF="true" isUsgaap="true" original="d116898dncsrs.htm">d116898dncsrs.htm</File>
    <File>eatonvance-20260630.xsd</File>
  </InputFiles>
  <SupplementalFiles>
    <File>g116898i02fd5ea1ef75d89aa152.jpg</File>
    <File>g116898i1fd2f4656de88c07c382.jpg</File>
    <File>g116898i2c7de5d68aa11257f667.jpg</File>
    <File>g116898i4c0bc99781914141e419.jpg</File>
    <File>g116898i5b490800900c42f3595d.jpg</File>
    <File>g116898ia61255f63d6daaa168c1.jpg</File>
    <File>g116898ib7b238064ba2b489b311.jpg</File>
    <File>g116898ibacb035a7e8767dbf2ad.jpg</File>
    <File>g116898ic17bbd188b3187410b64.jpg</File>
    <File>g116898id692dd8ac313161b6f62.jpg</File>
    <File>g116898id7159763dc9827f4af0b.jpg</File>
    <File>g116898idcd622294dabef1de2bc.jpg</File>
    <File>g116898ie8b7c4eea03bc2e16c1b.jpg</File>
    <File>g116898img0eb03c3d2.gif</File>
    <File>g116898img17d269731.gif</File>
    <File>g116898img19e187cb2.gif</File>
    <File>g116898img226922162.gif</File>
    <File>g116898img652aa08b2.gif</File>
    <File>g116898img659007171.gif</File>
    <File>g116898img6662a89c1.gif</File>
    <File>g116898img7128afce2.gif</File>
    <File>g116898img744d5a442.gif</File>
    <File>g116898img82272b401.gif</File>
    <File>g116898img934e65371.gif</File>
    <File>g116898imgabf17fc02.gif</File>
    <File>g116898imgc0ac25cb1.gif</File>
    <File>g116898imgc8e9bddc2.gif</File>
    <File>g116898imgd3ccc7412.gif</File>
    <File>g116898imgdaaa27061.gif</File>
    <File>g116898imgdce7aa881.gif</File>
    <File>g116898imgffb3e2c11.gif</File>
  </SupplementalFiles>
  <BaseTaxonomies>
    <BaseTaxonomy items="28">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="34">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="505">http://xbrl.sec.gov/oef/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>false</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
