    <SEC-DOCUMENT>0001628280-21-021316-index.html : 20211103
    <SEC-HEADER>0001628280-21-021316.hdr.sgml : 20211103
    <ACCEPTANCE-DATETIME>20211103080713
    ACCESSION NUMBER:		0001628280-21-021316
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		36
    CONFORMED PERIOD OF REPORT:	20211103
    ITEM INFORMATION:		Results of Operations and Financial Condition
    FILED AS OF DATE:		20211103
    DATE AS OF CHANGE:		20211103

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BGC Partners, Inc.
    		CENTRAL INDEX KEY:			0001094831
    		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY & COMMODITY BROKERS, DEALERS, EXCHANGES & SERVICES [6200]
    		IRS NUMBER:				134063515
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-28191
    		FILM NUMBER:		211373788

    	BUSINESS ADDRESS:
    		STREET 1:		499 PARK AVENUE
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10022
    		BUSINESS PHONE:		212-610-2200

    	MAIL ADDRESS:
    		STREET 1:		499 PARK AVENUE
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10022

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ESPEED INC
    		DATE OF NAME CHANGE:	19990913
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>bgcp-20211103.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: bgcp-20211103.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>a3q2021bgcpearningsrelea.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: a3q2021bgcpearningsrelea.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>bgcp-20211103.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 3 - file: bgcp-20211103.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>4
    <FILENAME>bgcp-20211103_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 4 - file: bgcp-20211103_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>5
    <FILENAME>bgcp-20211103_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: bgcp-20211103_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>a3q2021bgcpearningsrelea001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: a3q2021bgcpearningsrelea001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>a3q2021bgcpearningsrelea002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: a3q2021bgcpearningsrelea002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>a3q2021bgcpearningsrelea003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: a3q2021bgcpearningsrelea003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>a3q2021bgcpearningsrelea004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: a3q2021bgcpearningsrelea004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>a3q2021bgcpearningsrelea005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: a3q2021bgcpearningsrelea005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>a3q2021bgcpearningsrelea006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: a3q2021bgcpearningsrelea006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>a3q2021bgcpearningsrelea007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: a3q2021bgcpearningsrelea007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>a3q2021bgcpearningsrelea008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: a3q2021bgcpearningsrelea008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>a3q2021bgcpearningsrelea009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: a3q2021bgcpearningsrelea009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>a3q2021bgcpearningsrelea010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: a3q2021bgcpearningsrelea010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>a3q2021bgcpearningsrelea011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: a3q2021bgcpearningsrelea011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>a3q2021bgcpearningsrelea012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: a3q2021bgcpearningsrelea012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>a3q2021bgcpearningsrelea013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: a3q2021bgcpearningsrelea013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>a3q2021bgcpearningsrelea014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: a3q2021bgcpearningsrelea014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>a3q2021bgcpearningsrelea015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: a3q2021bgcpearningsrelea015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>a3q2021bgcpearningsrelea016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: a3q2021bgcpearningsrelea016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>a3q2021bgcpearningsrelea017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: a3q2021bgcpearningsrelea017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>a3q2021bgcpearningsrelea018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: a3q2021bgcpearningsrelea018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>a3q2021bgcpearningsrelea019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: a3q2021bgcpearningsrelea019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>a3q2021bgcpearningsrelea020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: a3q2021bgcpearningsrelea020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>a3q2021bgcpearningsrelea021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: a3q2021bgcpearningsrelea021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>a3q2021bgcpearningsrelea022.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: a3q2021bgcpearningsrelea022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>a3q2021bgcpearningsrelea023.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: a3q2021bgcpearningsrelea023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>29
    <FILENAME>bgcp-20211103_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 29 - file: bgcp-20211103_htm.html

    Document 29 - RAW XML: bgcp-20211103_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>30
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 30 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>31
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>32
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>33
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: FilingSummary.html

    Document 34 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>36
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 36 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>37
    <FILENAME>0001628280-21-021316-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 37 - file: 0001628280-21-021316-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>