    <SEC-DOCUMENT>0001193125-25-049580-index.html : 20250307
    <SEC-HEADER>0001193125-25-049580.hdr.sgml : 20250307
    <ACCEPTANCE-DATETIME>20250307140129
    ACCESSION NUMBER:		0001193125-25-049580
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		14
    CONFORMED PERIOD OF REPORT:	20241231
    FILED AS OF DATE:		20250307
    DATE AS OF CHANGE:		20250307
    EFFECTIVENESS DATE:		20250307

    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:		25719096

    	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>d928515dncsr.htm
    <DESCRIPTION>BLACKROCK FLOATING RATE INCOME STRATEGIES FUND, INC.
    <TEXT>
    Document 1 - file: d928515dncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d928515dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d928515dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d928515dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d928515dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.PROXYPOL
    <SEQUENCE>4
    <FILENAME>d928515dex99proxypol.htm
    <DESCRIPTION>CLOSED END FUND PROXY VOTING POLICY
    <TEXT>
    Document 4 - file: d928515dex99proxypol.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g928515gra001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g928515gra001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g928515gra002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g928515gra002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g928515img0029455c6.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g928515img0029455c6.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g928515img465ca9e35.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g928515img465ca9e35.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g928515img9342c5587.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g928515img9342c5587.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g928515imgc74d03e63.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g928515imgc74d03e63.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g928515imgc8eacb3e2.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g928515imgc8eacb3e2.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g928515imgf7038c0a4.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g928515imgf7038c0a4.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g928515imgfd4e04911.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g928515imgfd4e04911.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g928515sp18.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g928515sp18.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>