    <SEC-DOCUMENT>0001193125-24-060494-index.html : 20240306
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    <ACCEPTANCE-DATETIME>20240306134104
    ACCESSION NUMBER:		0001193125-24-060494
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		20
    CONFORMED PERIOD OF REPORT:	20231231
    FILED AS OF DATE:		20240306
    DATE AS OF CHANGE:		20240306
    EFFECTIVENESS DATE:		20240306

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK FLOATING RATE INCOME STRATEGIES FUND, INC.
    		CENTRAL INDEX KEY:			0001259708
    		ORGANIZATION NAME:
    		IRS NUMBER:				000000000

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21413
    		FILM NUMBER:		24725231

    	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 FLOATING RATE INCOME STRATEGIES FUND INC
    		DATE OF NAME CHANGE:	20061020

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FLOATING RATE INCOME STRATEGIES FUND INC
    		DATE OF NAME CHANGE:	20030813
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d632264dncsr.htm
    <DESCRIPTION>BLACKROCK FLOATING RATE INCOME STRATEGIES FUND, INC.
    <TEXT>
    Document 1 - file: d632264dncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d632264dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d632264dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d632264dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d632264dex99906cert.htm

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    <DOCUMENT>
    <TYPE>EX-99.PROXYPOL
    <SEQUENCE>4
    <FILENAME>d632264dex99proxypol.htm
    <DESCRIPTION>PROXY VOTING POLICY AND PROCEDURES
    <TEXT>
    Document 4 - file: d632264dex99proxypol.htm

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    <SEQUENCE>5
    <FILENAME>d632264dex99globalcorpgov.htm
    <DESCRIPTION>GLOBAL CORPORATE GOVERNANCE & ENGAGEMENT PRINCIPLES
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    Document 5 - file: d632264dex99globalcorpgov.htm

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    <TYPE>EX-99.USCORPGOV
    <SEQUENCE>6
    <FILENAME>d632264dex99uscorpgov.htm
    <DESCRIPTION>CORPORATE GOVERNANCE AND PROXY VOTING GUIDELINES FOR U.S. SECURITIES
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    Document 6 - file: d632264dex99uscorpgov.htm

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    <TYPE>EX-99.(SEC19)
    <SEQUENCE>7
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    <DESCRIPTION>EX-99.(SEC19)
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    Document 7 - file: d632264dex99sec19.htm

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    <DESCRIPTION>GRAPHIC
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    Document 8 - file: g179418g16g16.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 9 - file: g179418g37g37.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 10 - file: g179418sp15a.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 11 - file: g179418sp15aa.jpg

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    <SEQUENCE>12
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    <DESCRIPTION>GRAPHIC
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    Document 12 - file: g632270br227.jpg

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    <SEQUENCE>13
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    <DESCRIPTION>GRAPHIC
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    Document 13 - file: g632270g00s01.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 14 - file: g632270g00s02.jpg

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    <SEQUENCE>15
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g632270g00s03.jpg

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    <SEQUENCE>16
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g632270g00s15.jpg

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    <SEQUENCE>17
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g632270g00s18.jpg

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    <SEQUENCE>18
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g632270g42l24.jpg

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    <SEQUENCE>19
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g632270sig_01mips.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 20 - file: g632270sp2new.jpg

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