    <SEC-DOCUMENT>0001193125-18-207614-index.html : 20180628
    <SEC-HEADER>0001193125-18-207614.hdr.sgml : 20180628
    <ACCEPTANCE-DATETIME>20180628161108
    ACCESSION NUMBER:		0001193125-18-207614
    CONFORMED SUBMISSION TYPE:	N-CSRS
    PUBLIC DOCUMENT COUNT:		10
    CONFORMED PERIOD OF REPORT:	20180430
    FILED AS OF DATE:		20180628
    DATE AS OF CHANGE:		20180628
    EFFECTIVENESS DATE:		20180628

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Duff & Phelps Global Utility Income Fund Inc.
    		CENTRAL INDEX KEY:			0001515671
    		IRS NUMBER:				452261437
    		FISCAL YEAR END:			1031

    	FILING VALUES:
    		FORM TYPE:		N-CSRS
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-22533
    		FILM NUMBER:		18925475

    	BUSINESS ADDRESS:
    		STREET 1:		200 SOUTH WACKER DRIVE
    		STREET 2:		SUITE 500
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    		BUSINESS PHONE:		(866) 270-7598

    	MAIL ADDRESS:
    		STREET 1:		200 SOUTH WACKER DRIVE
    		STREET 2:		SUITE 500
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Duff & Phelps Global Utility & Midstream Energy Income Fund Inc.
    		DATE OF NAME CHANGE:	20110316
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSRS
    <SEQUENCE>1
    <FILENAME>d545188dncsrs.htm
    <DESCRIPTION>DUFF & PHELPS GLOBAL UTILITY INCOME FUND INC.
    <TEXT>
    Document 1 - file: d545188dncsrs.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d545188dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d545188dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CE
    <SEQUENCE>3
    <FILENAME>d545188dex99906ce.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d545188dex99906ce.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.12(C)
    <SEQUENCE>4
    <FILENAME>d545188dex9912c.htm
    <DESCRIPTION>19(A) NOTICES
    <TEXT>
    Document 4 - file: d545188dex9912c.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g545188g0626024041057.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g545188g0626024041057.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g545188g0626024426805.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g545188g0626024426805.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g545188g25y42.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g545188g25y42.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g545188g28f24.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g545188g28f24.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g545188g41y89.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g545188g41y89.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g545188g90j82.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g545188g90j82.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>