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<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:fnd="http://xbrl.sec.gov/fnd/2026q3"
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    <context id="AsOf2026-10-07">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0002119255</identifier>
        </entity>
        <period>
            <startDate>2026-10-07</startDate>
            <endDate>2026-10-07</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="AsOf2026-10-07" id="Fact000003">true</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="AsOf2026-10-07" id="Fact000004">0002119255</dei:EntityCentralIndexKey>
    <dei:EntityCentralIndexKey contextRef="AsOf2026-10-07" id="Fact000008">0002119255</dei:EntityCentralIndexKey>
    <dei:DocumentPeriodEndDate contextRef="AsOf2026-10-07" id="Fact000007">2026-10-07</dei:DocumentPeriodEndDate>
    <dei:AmendmentDescription contextRef="AsOf2026-10-07" id="Fact000009">1</dei:AmendmentDescription>
    <dei:DocumentType contextRef="AsOf2026-10-07" id="Fact000010">S-6</dei:DocumentType>
    <dei:EntityRegistrantName contextRef="AsOf2026-10-07" id="Fact000011">Guggenheim Defined Portfolios, Series 2609</dei:EntityRegistrantName>
    <fnd:NmRule35d1TermDfnTextBlock contextRef="AsOf2026-10-07" id="Fact000012">The portfolio of the trust consists primarily
of corporate debt obligations of U.S. and non-U.S. entities. Corporate debt obligations are fully taxable debt obligations issued by corporations
to finance their operations. As of the Inception Date, at least 80% of the value of the trust&#x2019;s assets consists of investment-grade
corporate debt obligations maturing in approximately 3-7 years. The portfolio may hold debt obligations with a maturity of less than three
years or greater than seven years. Investment-grade securities will be those securities rated investment-grade quality (i.e., in the category
of BBB/Baa or higher) by at least one nationally recognized statistical rating organization or, if unrated, deemed to be of comparable
credit characteristics by the sponsor. Such rating relates to the underlying securities and not the trust or the value of the units, which
will fluctuate. For purposes of the trust&#x2019;s 80% policy, the sponsor believes that any unrated corporate debt obligation held by
the trust would have been rated investment-grade if it was rated by a nationally recognized statistical rating organization. There can
be no assurance that any security contained in the trust will retain an investment-grade rating for the life of the trust. See &#x201c;Description
of Bond Rating&#x201d; for additional information. As a result of this strategy, the trust is concentrated in the financials sector.</fnd:NmRule35d1TermDfnTextBlock>
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