    <SEC-DOCUMENT>0001193125-24-213402-index.html : 20240905
    <SEC-HEADER>0001193125-24-213402.hdr.sgml : 20240905
    <ACCEPTANCE-DATETIME>20240904210012
    ACCESSION NUMBER:		0001193125-24-213402
    CONFORMED SUBMISSION TYPE:	N-CSRS
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20240630
    FILED AS OF DATE:		20240905
    DATE AS OF CHANGE:		20240904
    EFFECTIVENESS DATE:		20240905

    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-CSRS
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21413
    		FILM NUMBER:		241279575

    	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-CSRS
    <SEQUENCE>1
    <FILENAME>d879856dncsrs.htm
    <DESCRIPTION>BLACKROCK FLOATING RATE INCOME STRATEGIES FUND, INC.
    <TEXT>
    Document 1 - file: d879856dncsrs.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d879856dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d879856dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d879856dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d879856dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g878620img75302d8e1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g878620img75302d8e1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g878620imgc602afc22.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g878620imgc602afc22.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>