    <SEC-DOCUMENT>0000021175-25-000047-index.html : 20250505
    <SEC-HEADER>0000021175-25-000047.hdr.sgml : 20250505
    <ACCEPTANCE-DATETIME>20250505061638
    ACCESSION NUMBER:		0000021175-25-000047
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		61
    CONFORMED PERIOD OF REPORT:	20250505
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20250505
    DATE AS OF CHANGE:		20250505

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CNA FINANCIAL CORP
    		CENTRAL INDEX KEY:			0000021175
    		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
    		ORGANIZATION NAME:           	02 Finance
    		EIN:				366169860
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-05823
    		FILM NUMBER:		25910804

    	BUSINESS ADDRESS:
    		STREET 1:		CNA
    		STREET 2:		151 N. FRANKLIN
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    		BUSINESS PHONE:		3128225000

    	MAIL ADDRESS:
    		STREET 1:		CNA
    		STREET 2:		151 N. FRANKLIN
    		CITY:			CHICAGO
    		STATE:			IL
    		ZIP:			60606
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>cna-20250505.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: cna-20250505.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>q12025exhibit991.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: q12025exhibit991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>q12025exhibit992.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: q12025exhibit992.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>q12025ex993earningsprese.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 4 - file: q12025ex993earningsprese.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.4
    <SEQUENCE>5
    <FILENAME>q12025ex994earningsremarks.htm
    <DESCRIPTION>EX-99.4
    <TEXT>
    Document 5 - file: q12025ex994earningsremarks.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>6
    <FILENAME>cna-20250505.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 6 - file: cna-20250505.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>7
    <FILENAME>cna-20250505_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 7 - file: cna-20250505_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>8
    <FILENAME>cna-20250505_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 8 - file: cna-20250505_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>9
    <FILENAME>cna-20250505_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 9 - file: cna-20250505_pre.xml

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>cnalogoq42019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: cnalogoq42019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>q12025ex993earningsprese001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: q12025ex993earningsprese001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>q12025ex993earningsprese002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: q12025ex993earningsprese002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>q12025ex993earningsprese003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: q12025ex993earningsprese003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>q12025ex993earningsprese004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: q12025ex993earningsprese004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>q12025ex993earningsprese005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: q12025ex993earningsprese005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>q12025ex993earningsprese006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: q12025ex993earningsprese006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>q12025ex993earningsprese007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: q12025ex993earningsprese007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>q12025ex993earningsprese008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: q12025ex993earningsprese008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>q12025ex993earningsprese009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: q12025ex993earningsprese009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>q12025ex993earningsprese010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: q12025ex993earningsprese010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>q12025ex993earningsprese011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: q12025ex993earningsprese011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>q12025ex993earningsprese012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: q12025ex993earningsprese012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>q12025ex993earningsprese013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: q12025ex993earningsprese013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>q12025ex993earningsprese014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: q12025ex993earningsprese014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>q12025ex993earningsprese015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: q12025ex993earningsprese015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>q12025ex993earningsprese016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: q12025ex993earningsprese016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>q12025ex993earningsprese017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: q12025ex993earningsprese017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>q12025ex993earningsprese018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: q12025ex993earningsprese018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>q12025ex993earningsprese019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: q12025ex993earningsprese019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>q12025ex993earningsprese020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 31 - file: q12025ex993earningsprese020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>q12025exhibit992001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 32 - file: q12025exhibit992001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>q12025exhibit992002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 33 - file: q12025exhibit992002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>q12025exhibit992003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 34 - file: q12025exhibit992003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>q12025exhibit992004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 35 - file: q12025exhibit992004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>q12025exhibit992005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 36 - file: q12025exhibit992005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>q12025exhibit992006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 37 - file: q12025exhibit992006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>q12025exhibit992007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 38 - file: q12025exhibit992007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>q12025exhibit992008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 39 - file: q12025exhibit992008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>q12025exhibit992009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 40 - file: q12025exhibit992009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>q12025exhibit992010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 41 - file: q12025exhibit992010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>q12025exhibit992011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 42 - file: q12025exhibit992011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>q12025exhibit992012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 43 - file: q12025exhibit992012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>q12025exhibit992013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 44 - file: q12025exhibit992013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>q12025exhibit992014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 45 - file: q12025exhibit992014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>46
    <FILENAME>q12025exhibit992015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 46 - file: q12025exhibit992015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>47
    <FILENAME>q12025exhibit992016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 47 - file: q12025exhibit992016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>48
    <FILENAME>q12025exhibit992017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 48 - file: q12025exhibit992017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>49
    <FILENAME>q12025exhibit992018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 49 - file: q12025exhibit992018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>50
    <FILENAME>q12025exhibit992019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 50 - file: q12025exhibit992019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>51
    <FILENAME>q12025exhibit992020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 51 - file: q12025exhibit992020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>52
    <FILENAME>q12025exhibit992021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 52 - file: q12025exhibit992021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>54
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 54 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>55
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 55 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>56
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 56 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>57
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 57 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>59
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 59 - file: FilingSummary.html

    Document 59 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>62
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 62 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>63
    <FILENAME>0000021175-25-000047-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 63 - file: 0000021175-25-000047-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>64
    <FILENAME>cna-20250505_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 64 - file: cna-20250505_htm.html

    Document 64 - RAW XML: cna-20250505_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>