    <SEC-DOCUMENT>0001193125-22-313172-index.html : 20221228
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    <ACCEPTANCE-DATETIME>20221228090813
    ACCESSION NUMBER:		0001193125-22-313172
    CONFORMED SUBMISSION TYPE:	N-2/A
    PUBLIC DOCUMENT COUNT:		36
    FILED AS OF DATE:		20221228
    DATE AS OF CHANGE:		20221228

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK FLOATING RATE INCOME TRUST
    		CENTRAL INDEX KEY:			0001287480
    		IRS NUMBER:				000000000

    	FILING VALUES:
    		FORM TYPE:		N-2/A
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-21566
    		FILM NUMBER:		221491772

    	BUSINESS ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809-3700
    		BUSINESS PHONE:		(800) 882-0052

    	MAIL ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809-3700

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BLACKROCK GLOBAL FLOATING RATE INCOME TRUST
    		DATE OF NAME CHANGE:	20040528

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BLACKROCK VARIABLE RATE & INFLATION PROTECTED SECURITIES
    		DATE OF NAME CHANGE:	20040416

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BLACKROCK FLOATING RATE INCOME TRUST
    		CENTRAL INDEX KEY:			0001287480
    		IRS NUMBER:				000000000

    	FILING VALUES:
    		FORM TYPE:		N-2/A
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-266318
    		FILM NUMBER:		221491771

    	BUSINESS ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809-3700
    		BUSINESS PHONE:		(800) 882-0052

    	MAIL ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809-3700

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BLACKROCK GLOBAL FLOATING RATE INCOME TRUST
    		DATE OF NAME CHANGE:	20040528

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BLACKROCK VARIABLE RATE & INFLATION PROTECTED SECURITIES
    		DATE OF NAME CHANGE:	20040416
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    <DOCUMENT>
    <TYPE>N-2/A
    <SEQUENCE>1
    <FILENAME>d383966dn2a.htm
    <DESCRIPTION>BLACKROCK FLOATING RATE INCOME TRUST
    <TEXT>
    Document 1 - file: d383966dn2a.htm

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    <TYPE>EX-99.(K)(3)
    <SEQUENCE>2
    <FILENAME>d383966dex99k3.htm
    <DESCRIPTION>AMENDED AND RESTATED CREDIT AGREEMENT
    <TEXT>
    Document 2 - file: d383966dex99k3.htm

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    <FILENAME>d383966dex99k4.htm
    <DESCRIPTION>AMENDMENT NO. 1 TO THE AMENDED AND RESTATED CREDIT AGREEMENT
    <TEXT>
    Document 3 - file: d383966dex99k4.htm

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    <TYPE>EX-99.(K)(5)
    <SEQUENCE>4
    <FILENAME>d383966dex99k5.htm
    <DESCRIPTION>AMENDMENT NO. 2 TO THE AMENDED AND RESTATED CREDIT AGREEMENT
    <TEXT>
    Document 4 - file: d383966dex99k5.htm

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    <TYPE>EX-99.(K)(6)
    <SEQUENCE>5
    <FILENAME>d383966dex99k6.htm
    <DESCRIPTION>AMENDMENT NO. 3 TO THE AMENDED AND RESTATED CREDIT AGREEMENT
    <TEXT>
    Document 5 - file: d383966dex99k6.htm

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    <SEQUENCE>6
    <FILENAME>d383966dex99k7.htm
    <DESCRIPTION>AMENDMENT NO. 4 TO THE AMENDED AND RESTATED CREDIT AGREEMENT
    <TEXT>
    Document 6 - file: d383966dex99k7.htm

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    <TYPE>EX-99.(L)
    <SEQUENCE>7
    <FILENAME>d383966dex99l.htm
    <DESCRIPTION>OPINION AND CONSENT OF COUNSEL TO THE REGISTRANT
    <TEXT>
    Document 7 - file: d383966dex99l.htm

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    <TYPE>EX-99.(N)
    <SEQUENCE>8
    <FILENAME>d383966dex99n.htm
    <DESCRIPTION>INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM CONSENT
    <TEXT>
    Document 8 - file: d383966dex99n.htm

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    <TYPE>EX-FILING FEES
    <SEQUENCE>9
    <FILENAME>d383966dexfilingfees.htm
    <DESCRIPTION>EX-FILING FEES
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    Document 9 - file: d383966dexfilingfees.htm

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    <TYPE>EX-101.SCH
    <SEQUENCE>10
    <FILENAME>cik0001287480-20221228.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
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    <TYPE>EX-101.DEF
    <SEQUENCE>11
    <FILENAME>cik0001287480-20221228_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
    <TEXT>
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    <TYPE>EX-101.LAB
    <SEQUENCE>12
    <FILENAME>cik0001287480-20221228_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
    <TEXT>
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    <SEQUENCE>13
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    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
    <TEXT>
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    <SEQUENCE>15
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    <DESCRIPTION>GRAPHIC
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    Document 15 - file: g383966001.jpg

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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    Document 17 - file: g383966g01g20.jpg

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    Document 18 - file: g383966g01g21.jpg

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    Document 19 - file: g383966g01g45.jpg

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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    Document 22 - file: g383966g01g68.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 23 - file: g383966g01g78.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 24 - file: g383966g01g79.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 25 - file: g383966g01g88.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 26 - file: g383966g01g89.jpg

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    <FILENAME>g383966g0721230248928.jpg
    <DESCRIPTION>GRAPHIC
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    Document 27 - file: g383966g0721230248928.jpg

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    <FILENAME>g383966g0721230249318.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: g383966g0721230249318.jpg

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    <FILENAME>g383966g15a01.jpg
    <DESCRIPTION>GRAPHIC
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    Document 29 - file: g383966g15a01.jpg

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    <SEQUENCE>30
    <FILENAME>g383966g37f60.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: g383966g37f60.jpg

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    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: R1.htm

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>32
    <FILENAME>d383966dn2a_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: d383966dn2a_htm.html

    Document 32 - RAW XML: d383966dn2a_htm.xml

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    <TYPE>XML
    <SEQUENCE>33
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    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: Show.js

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    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: report.css

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    <TYPE>XML
    <SEQUENCE>35
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: FilingSummary.html

    Document 35 - RAW XML: FilingSummary.xml

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    <TYPE>JSON
    <SEQUENCE>37
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    <TEXT>
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