    <SEC-DOCUMENT>0001193125-23-136847-index.html : 20230505
    <SEC-HEADER>0001193125-23-136847.hdr.sgml : 20230505
    <ACCEPTANCE-DATETIME>20230505133514
    ACCESSION NUMBER:		0001193125-23-136847
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		4
    CONFORMED PERIOD OF REPORT:	20230228
    FILED AS OF DATE:		20230505
    DATE AS OF CHANGE:		20230505
    EFFECTIVENESS DATE:		20230505

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Nuveen California Quality Municipal Income Fund
    		CENTRAL INDEX KEY:			0001074952
    		IRS NUMBER:				364270660
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			0228

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-09161
    		FILM NUMBER:		23892750

    	BUSINESS ADDRESS:
    		STREET 1:		C/O NUVEEN INVESTMENTS
    		STREET 2:		333 W WACKER DRIVE
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    		BUSINESS PHONE:		3129177783

    	MAIL ADDRESS:
    		STREET 1:		C/O NUVEEN INVESTMENTS
    		STREET 2:		333 W WACKER DRIVE
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	NUVEEN CALIFORNIA DIVIDEND ADVANTAGE MUNICIPAL FUND
    		DATE OF NAME CHANGE:	20011011

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	NUVEEN CALIFORNIA MUNICIPAL ADVANTAGE FUND
    		DATE OF NAME CHANGE:	19981209
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d494043dncsr.htm
    <DESCRIPTION>NUVEEN CALIFORNIA QUALITY MUNICIPAL INCOME FUND
    <TEXT>
    Document 1 - file: d494043dncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d494043dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT
    <TEXT>
    Document 2 - file: d494043dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906 CERT
    <SEQUENCE>3
    <FILENAME>d494043dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT
    <TEXT>
    Document 3 - file: d494043dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.PROXYVOTE
    <SEQUENCE>4
    <FILENAME>d494043dex99proxyvote.htm
    <DESCRIPTION>EX-99.PROXYVOTE
    <TEXT>
    Document 4 - file: d494043dex99proxyvote.htm

    </DOCUMENT>
    </SEC-DOCUMENT>