    <SEC-DOCUMENT>0001193125-25-230217-index.html : 20251003
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    <ACCEPTANCE-DATETIME>20251003161649
    ACCESSION NUMBER:		0001193125-25-230217
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		17
    CONFORMED PERIOD OF REPORT:	20250731
    FILED AS OF DATE:		20251003
    DATE AS OF CHANGE:		20251003
    EFFECTIVENESS DATE:		20251003

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK MUNICIPAL INCOME TRUST II
    		CENTRAL INDEX KEY:			0001176194
    		ORGANIZATION NAME:
    		EIN:				010722216
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0831

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21126
    		FILM NUMBER:		251374083

    	BUSINESS ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809
    		BUSINESS PHONE:		888-441-7762

    	MAIL ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809
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    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d927198dncsr.htm
    <DESCRIPTION>BLACKROCK MUNICIPAL INCOME TRUST II
    <TEXT>
    Document 1 - file: d927198dncsr.htm

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    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d927198dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d927198dex99cert.htm

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    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d927198dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d927198dex99906cert.htm

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    <DOCUMENT>
    <TYPE>EX-99.PROXYPOL
    <SEQUENCE>4
    <FILENAME>d927198dex99proxypol.htm
    <DESCRIPTION>PROXY VOTING POLICY AND PROCEDURES
    <TEXT>
    Document 4 - file: d927198dex99proxypol.htm

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    Document 5 - file: g927198dsp016.jpg

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    Document 6 - file: g927198dsp16aa.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 7 - file: g927198dsp16aaa.jpg

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    Document 9 - file: g927198img2b1fce842.jpg

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    Document 10 - file: g927198img5f7d34f58.gif

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    Document 11 - file: g927198img67aeae2b10.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g927198img807c9c2e1.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 13 - file: g927198img995db7a79.gif

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    Document 14 - file: g927198imga1463e024.gif

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    Document 15 - file: g927198imga98e299d3.gif

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    <TEXT>
    Document 16 - file: g927198imgbef85fd57.gif

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