    <SEC-DOCUMENT>0001193125-23-251217-index.html : 20231005
    <SEC-HEADER>0001193125-23-251217.hdr.sgml : 20231005
    <ACCEPTANCE-DATETIME>20231005101403
    ACCESSION NUMBER:		0001193125-23-251217
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		23
    CONFORMED PERIOD OF REPORT:	20230731
    FILED AS OF DATE:		20231005
    DATE AS OF CHANGE:		20231005
    EFFECTIVENESS DATE:		20231005

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BlackRock Long-Term Municipal Advantage Trust
    		CENTRAL INDEX KEY:			0001343793
    		IRS NUMBER:				000000000

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21835
    		FILM NUMBER:		231310039

    	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:	BlackRock Municipal Advantage Income Trust
    		DATE OF NAME CHANGE:	20051108
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d519318dncsr.htm
    <DESCRIPTION>BLACKROCK LONG-TERM MUNICIPAL ADVANTAGE TRUST
    <TEXT>
    Document 1 - file: d519318dncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d519318dex99cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d519318dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906 CERT
    <SEQUENCE>3
    <FILENAME>d519318dex99906cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d519318dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.PROXYPOL
    <SEQUENCE>4
    <FILENAME>d519318dex99proxypol.htm
    <DESCRIPTION>PROXY VOTING POLICY AND PROCEDURES
    <TEXT>
    Document 4 - file: d519318dex99proxypol.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.GLOBALCORPGOV
    <SEQUENCE>5
    <FILENAME>d519318dex99globalcorpgov.htm
    <DESCRIPTION>GLOBAL CORPORATE GOVERNANCE & ENGAGEMENT PRINCIPLES
    <TEXT>
    Document 5 - file: d519318dex99globalcorpgov.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.USCORPGOV
    <SEQUENCE>6
    <FILENAME>d519318dex99uscorpgov.htm
    <DESCRIPTION>CORPORATE GOVERNANCE AND PROXY VOTING GUIDELINES FOR U.S. SECURITIES
    <TEXT>
    Document 6 - file: d519318dex99uscorpgov.htm

    </DOCUMENT>
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    <SEQUENCE>7
    <FILENAME>g482724bblk.jpg
    <DESCRIPTION>GRAPHIC
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    Document 7 - file: g482724bblk.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 8 - file: g482724black1.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 9 - file: g482724black2.jpg

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    <SEQUENCE>10
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    <DESCRIPTION>GRAPHIC
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    Document 10 - file: g482724black24.jpg

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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g482724g42l24.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 12 - file: g482724g50p51.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 13 - file: g519318g08e50.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 14 - file: g519318g42l24.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 15 - file: g519318g88p42.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 16 - file: g519318gra0012.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 17 - file: g519318gra0015.jpg

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    <SEQUENCE>18
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    <DESCRIPTION>GRAPHIC
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    Document 18 - file: g519318gra0018.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 19 - file: g519318gra002.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 20 - file: g519318sig_01mips.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 21 - file: g519318sp004.jpg

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    <SEQUENCE>22
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    <DESCRIPTION>GRAPHIC
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    Document 22 - file: g519318sp006.jpg

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    <SEQUENCE>23
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    <DESCRIPTION>GRAPHIC
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    Document 23 - file: g519318sp009.jpg

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