    <SEC-DOCUMENT>0000798941-21-000034-index.html : 20210803
    <SEC-HEADER>0000798941-21-000034.hdr.sgml : 20210803
    <ACCEPTANCE-DATETIME>20210803063532
    ACCESSION NUMBER:		0000798941-21-000034
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		38
    CONFORMED PERIOD OF REPORT:	20210803
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210803
    DATE AS OF CHANGE:		20210803

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST CITIZENS BANCSHARES INC /DE/
    		CENTRAL INDEX KEY:			0000798941
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				561528994
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-16715
    		FILM NUMBER:		211137886

    	BUSINESS ADDRESS:
    		STREET 1:		4300 SIX FORKS ROAD
    		CITY:			RALEIGH
    		STATE:			NC
    		ZIP:			27609
    		BUSINESS PHONE:		919 716 7000

    	MAIL ADDRESS:
    		STREET 1:		4300 SIX FORKS ROAD
    		CITY:			RALEIGH
    		STATE:			NC
    		ZIP:			27609
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>fcnca-20210803.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: fcnca-20210803.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>earningsrelease-q22021.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: earningsrelease-q22021.htm

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>fcnca-20210803.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: fcnca-20210803.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>5
    <FILENAME>fcnca-20210803_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: fcnca-20210803_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>6
    <FILENAME>fcnca-20210803_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: fcnca-20210803_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>7
    <FILENAME>fcnca-20210803_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 7 - file: fcnca-20210803_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>fcbslogo2014a01a01a13a.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: fcbslogo2014a01a01a13a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>fcncainvestorpresentatio001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: fcncainvestorpresentatio001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>fcncainvestorpresentatio002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: fcncainvestorpresentatio002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>fcncainvestorpresentatio003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: fcncainvestorpresentatio003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>fcncainvestorpresentatio004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: fcncainvestorpresentatio004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>fcncainvestorpresentatio005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: fcncainvestorpresentatio005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>fcncainvestorpresentatio006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: fcncainvestorpresentatio006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>fcncainvestorpresentatio007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: fcncainvestorpresentatio007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>fcncainvestorpresentatio008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: fcncainvestorpresentatio008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>fcncainvestorpresentatio009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: fcncainvestorpresentatio009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>fcncainvestorpresentatio010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: fcncainvestorpresentatio010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>fcncainvestorpresentatio011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: fcncainvestorpresentatio011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>fcncainvestorpresentatio012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: fcncainvestorpresentatio012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>fcncainvestorpresentatio013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: fcncainvestorpresentatio013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>fcncainvestorpresentatio014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: fcncainvestorpresentatio014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>fcncainvestorpresentatio015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: fcncainvestorpresentatio015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>fcncainvestorpresentatio016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: fcncainvestorpresentatio016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>fcncainvestorpresentatio017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: fcncainvestorpresentatio017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>fcncainvestorpresentatio018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: fcncainvestorpresentatio018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>fcncainvestorpresentatio019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: fcncainvestorpresentatio019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>fcncainvestorpresentatio020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: fcncainvestorpresentatio020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>fcncainvestorpresentatio021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: fcncainvestorpresentatio021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>fcncainvestorpresentatio022.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: fcncainvestorpresentatio022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>fcnca-20210803_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 31 - file: fcnca-20210803_htm.html

    Document 31 - RAW XML: fcnca-20210803_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>32
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 32 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>33
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 33 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>34
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 34 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>35
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 35 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>36
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 36 - file: FilingSummary.html

    Document 36 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>39
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 39 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>40
    <FILENAME>0000798941-21-000034-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 40 - file: 0000798941-21-000034-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>