    <SEC-DOCUMENT>0001193125-25-196140-index.html : 20250904
    <SEC-HEADER>0001193125-25-196140.hdr.sgml : 20250904
    <ACCEPTANCE-DATETIME>20250904163615
    ACCESSION NUMBER:		0001193125-25-196140
    CONFORMED SUBMISSION TYPE:	N-CSRS
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20250630
    FILED AS OF DATE:		20250904
    DATE AS OF CHANGE:		20250904
    EFFECTIVENESS DATE:		20250904

    FILER:

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

    	FILING VALUES:
    		FORM TYPE:		N-CSRS
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21413
    		FILM NUMBER:		251293920

    	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>d45309dncsrs.htm
    <DESCRIPTION>BLACKROCK FLOATING RATE INCOME STRATEGIES FUND, INC.
    <TEXT>
    Document 1 - file: d45309dncsrs.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d45309dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d45309dex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d45309dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d45309dex99906cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g45309img86b9e23a1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g45309img86b9e23a1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g45309img9af212042.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g45309img9af212042.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>