    <SEC-DOCUMENT>0001193125-24-231871-index.html : 20241003
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    <ACCEPTANCE-DATETIME>20241003115957
    ACCESSION NUMBER:		0001193125-24-231871
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		21
    CONFORMED PERIOD OF REPORT:	20240731
    FILED AS OF DATE:		20241003
    DATE AS OF CHANGE:		20241003
    EFFECTIVENESS DATE:		20241003

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK MUNIYIELD QUALITY FUND II, INC.
    		CENTRAL INDEX KEY:			0000887394
    		ORGANIZATION NAME:
    		IRS NUMBER:				223194461
    		STATE OF INCORPORATION:			NJ
    		FISCAL YEAR END:			1031

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-06660
    		FILM NUMBER:		241350478

    	BUSINESS ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809
    		BUSINESS PHONE:		800-441-7762

    	MAIL ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MUNIYIELD QUALITY FUND II INC
    		DATE OF NAME CHANGE:	19920929
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d881687dncsr.htm
    <DESCRIPTION>BLACKROCK MUNIYIELD QUALITY FUND II, INC.
    <TEXT>
    Document 1 - file: d881687dncsr.htm

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    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d881687dex99cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d881687dex99cert.htm

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    <DOCUMENT>
    <TYPE>EX-99.906 CERT
    <SEQUENCE>3
    <FILENAME>d881687dex99906cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d881687dex99906cert.htm

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    <TYPE>EX-99.PROXYPOL
    <SEQUENCE>4
    <FILENAME>d881687dex99proxypol.htm
    <DESCRIPTION>PROXY VOTING POLICY AND PROCEDURES
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    <TYPE>EX-99.USCORPGOV
    <SEQUENCE>6
    <FILENAME>d881687dex99uscorpgov.htm
    <DESCRIPTION>CORPORATE GOVERNANCE AND PROXY VOTING GUIDELINES FOR U.S. SECURITIES
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