    <SEC-DOCUMENT>0001829126-24-006186-index.html : 20240909
    <SEC-HEADER>0001829126-24-006186.hdr.sgml : 20240909
    <ACCEPTANCE-DATETIME>20240909164328
    ACCESSION NUMBER:		0001829126-24-006186
    CONFORMED SUBMISSION TYPE:	POS EX
    PUBLIC DOCUMENT COUNT:		24
    FILED AS OF DATE:		20240909
    DATE AS OF CHANGE:		20240909
    EFFECTIVENESS DATE:		20240909

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GABELLI UTILITY TRUST
    		CENTRAL INDEX KEY:			0001080720
    		ORGANIZATION NAME:
    		IRS NUMBER:				134046522
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		POS EX
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-275448
    		FILM NUMBER:		241287747

    	BUSINESS ADDRESS:
    		STREET 1:		1 CORPORATE CENTER
    		CITY:			RYE
    		STATE:			NY
    		ZIP:			10580
    		BUSINESS PHONE:		9149215083

    	MAIL ADDRESS:
    		STREET 1:		1 CORPORATE CENTER
    		CITY:			RYE
    		STATE:			NY
    		ZIP:			10580

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GABELLI UTILITY FUND
    		DATE OF NAME CHANGE:	19990225
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>POS EX
    <SEQUENCE>1
    <FILENAME>gut-posex.htm
    <DESCRIPTION>POS EX
    <TEXT>
    Document 1 - file: gut-posex.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(D)(4)
    <SEQUENCE>2
    <FILENAME>gut_ex99-d4.htm
    <DESCRIPTION>EXHIBIT (D)(4)
    <TEXT>
    Document 2 - file: gut_ex99-d4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(D)(5)
    <SEQUENCE>3
    <FILENAME>gut_ex99-d5.htm
    <DESCRIPTION>EXHIBIT (D)(5)
    <TEXT>
    Document 3 - file: gut_ex99-d5.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(D)(6)
    <SEQUENCE>4
    <FILENAME>gut_ex99-d6.htm
    <DESCRIPTION>EXHIBIT (D)(6)
    <TEXT>
    Document 4 - file: gut_ex99-d6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(K)(6)
    <SEQUENCE>5
    <FILENAME>gut_ex99-k6.htm
    <DESCRIPTION>EXHIBIT (K)(6)
    <TEXT>
    Document 5 - file: gut_ex99-k6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(K)(7)
    <SEQUENCE>6
    <FILENAME>gut_ex99-k7.htm
    <DESCRIPTION>EXHIBIT (K)(7)
    <TEXT>
    Document 6 - file: gut_ex99-k7.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(L)(2)
    <SEQUENCE>7
    <FILENAME>gut_ex99-l2.htm
    <DESCRIPTION>EXHIBIT (L)(2)
    <TEXT>
    Document 7 - file: gut_ex99-l2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(S)(3)
    <SEQUENCE>8
    <FILENAME>gut_ex99-s3.htm
    <DESCRIPTION>EXHIBIT (S)(3)
    <TEXT>
    Document 8 - file: gut_ex99-s3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>exd4_001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: exd4_001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>exd4_002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: exd4_002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>exk6_001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: exk6_001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>12
    <FILENAME>ggt-20240909.xsd
    <DESCRIPTION>XBRL SCHEMA FILE
    <TEXT>
    Document 12 - file: ggt-20240909.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>13
    <FILENAME>ggt-20240909_def.xml
    <DESCRIPTION>XBRL DEFINITION FILE
    <TEXT>
    Document 13 - file: ggt-20240909_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>14
    <FILENAME>ggt-20240909_lab.xml
    <DESCRIPTION>XBRL LABEL FILE
    <TEXT>
    Document 14 - file: ggt-20240909_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>15
    <FILENAME>ggt-20240909_pre.xml
    <DESCRIPTION>XBRL PRESENTATION FILE
    <TEXT>
    Document 15 - file: ggt-20240909_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>17
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>18
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 18 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>19
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 19 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>20
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 20 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>22
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 22 - file: FilingSummary.html

    Document 22 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>24
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>25
    <FILENAME>0001829126-24-006186-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 25 - file: 0001829126-24-006186-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>26
    <FILENAME>gut-posex_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 26 - file: gut-posex_htm.html

    Document 26 - RAW XML: gut-posex_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>