    <SEC-DOCUMENT>0001999371-24-007719-index.html : 20240624
    <SEC-HEADER>0001999371-24-007719.hdr.sgml : 20240624
    <ACCEPTANCE-DATETIME>20240624135641
    ACCESSION NUMBER:		0001999371-24-007719
    CONFORMED SUBMISSION TYPE:	N-2
    PUBLIC DOCUMENT COUNT:		25
    FILED AS OF DATE:		20240624
    DATE AS OF CHANGE:		20240624

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GABELLI GLOBAL UTILITY & INCOME TRUST
    		CENTRAL INDEX KEY:			0001282957
    		ORGANIZATION NAME:
    		IRS NUMBER:				320116828
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		N-2
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21529
    		FILM NUMBER:		241063627

    	BUSINESS ADDRESS:
    		STREET 1:		ONE CORPORATE CENTER
    		CITY:			RYE
    		STATE:			NY
    		ZIP:			10580
    		BUSINESS PHONE:		8149219105

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

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GABELLI GLOBAL UTILITY & INCOME TRUST
    		CENTRAL INDEX KEY:			0001282957
    		ORGANIZATION NAME:
    		IRS NUMBER:				320116828
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		N-2
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-280438
    		FILM NUMBER:		241063626

    	BUSINESS ADDRESS:
    		STREET 1:		ONE CORPORATE CENTER
    		CITY:			RYE
    		STATE:			NY
    		ZIP:			10580
    		BUSINESS PHONE:		8149219105

    	MAIL ADDRESS:
    		STREET 1:		ONE CORPORATE CENTER
    		CITY:			RYE
    		STATE:			NY
    		ZIP:			10580
    <IS-FILER-A-NEW-REGISTRANT>N
    <IS-FILER-A-WELL-KNOWN-SEASONED-ISSUER>N
    <FILED-PURSUANT-TO-GENERAL-INSTRUCTION-A2>Y
    <IS-FUND-24F2-ELIGIBLE>N
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-2
    <SEQUENCE>1
    <FILENAME>glu-n2_062424.htm
    <DESCRIPTION>INITIAL REGISTRATION STATEMENT
    <TEXT>
    Document 1 - file: glu-n2_062424.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(A)(IV)
    <SEQUENCE>2
    <FILENAME>ex99aiv.htm
    <DESCRIPTION>AMENDMENT TO STATEMENT FOR PREFERENCES OF SERIES B CUMULATIVE PUTTABLE AND CALLABLE PREFERRED SHARES
    <TEXT>
    Document 2 - file: ex99aiv.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(D)(V)
    <SEQUENCE>3
    <FILENAME>ex99dv.htm
    <DESCRIPTION>FORM OF INDENTURE
    <TEXT>
    Document 3 - file: ex99dv.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(I)
    <SEQUENCE>4
    <FILENAME>ex99ti.htm
    <DESCRIPTION>POWERS OF ATTORNEY
    <TEXT>
    Document 4 - file: ex99ti.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(II)
    <SEQUENCE>5
    <FILENAME>ex99tii.htm
    <DESCRIPTION>FORM OF PROSPECTUS SUPPLEMENT RELATING TO COMMON SHARES
    <TEXT>
    Document 5 - file: ex99tii.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(III)
    <SEQUENCE>6
    <FILENAME>ex99tiii.htm
    <DESCRIPTION>FORM OF PROSPECTUS SUPPLEMENT RELATING TO PREFERRED SHARES
    <TEXT>
    Document 6 - file: ex99tiii.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(IV)
    <SEQUENCE>7
    <FILENAME>ex99tiv.htm
    <DESCRIPTION>FORM OF PROSPECTUS SUPPLEMENT RELATING TO NOTES
    <TEXT>
    Document 7 - file: ex99tiv.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(V)
    <SEQUENCE>8
    <FILENAME>ex99tv.htm
    <DESCRIPTION>FORM OF PROSPECTUS SUPPLEMENT RELATING TO SUBSCRIPTION RIGHTS TO PURCHASE COMMON SHARES
    <TEXT>
    Document 8 - file: ex99tv.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(VI)
    <SEQUENCE>9
    <FILENAME>ex99tvi.htm
    <DESCRIPTION>FORM OF PROSPECTUS SUPPLEMENT RELATING TO SUBSCRIPTION RIGHTS TO PURCHASE PREFERRED SHARES
    <TEXT>
    Document 9 - file: ex99tvi.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.(T)(VII)
    <SEQUENCE>10
    <FILENAME>ex99tvii.htm
    <DESCRIPTION>FORM OF PROSPECTUS SUPPLEMENT RELATING TO SUBSCRIPTION RIGHTS TO PURCHASE COMMON AND PREFERRED SHARES
    <TEXT>
    Document 10 - file: ex99tvii.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-FILING FEES
    <SEQUENCE>11
    <FILENAME>ex107.htm
    <DESCRIPTION>CALCULATION OF FILING FEE EXHIBIT
    <TEXT>
    Document 11 - file: ex107.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>12
    <FILENAME>glu-20240624.xsd
    <DESCRIPTION>XBRL SCHEMA FILE
    <TEXT>
    Document 12 - file: glu-20240624.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>13
    <FILENAME>glu-20240624_def.xml
    <DESCRIPTION>XBRL DEFINITION FILE
    <TEXT>
    Document 13 - file: glu-20240624_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>14
    <FILENAME>glu-20240624_lab.xml
    <DESCRIPTION>XBRL LABEL FILE
    <TEXT>
    Document 14 - file: glu-20240624_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>15
    <FILENAME>glu-20240624_pre.xml
    <DESCRIPTION>XBRL PRESENTATION FILE
    <TEXT>
    Document 15 - file: glu-20240624_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>glun2062024001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: glun2062024001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>glun2062024002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: glun2062024002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>19
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 19 - file: R1.htm

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 21 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>23
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 23 - file: FilingSummary.html

    Document 23 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>25
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 25 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>26
    <FILENAME>0001999371-24-007719-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 26 - file: 0001999371-24-007719-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>28
    <FILENAME>glu-n2_062424_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 28 - file: glu-n2_062424_htm.html

    Document 28 - RAW XML: glu-n2_062424_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>