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    <ACCEPTANCE-DATETIME>20230428173329
    ACCESSION NUMBER:		0000798941-23-000023
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		18
    CONFORMED PERIOD OF REPORT:	20230425
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Submission of Matters to a Vote of Security Holders
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20230501
    DATE AS OF CHANGE:		20230428

    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:		23868603

    	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
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    <FILENAME>fcnca-20230425.htm
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    Document 1 - file: fcnca-20230425.htm

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    <TYPE>EX-3.01
    <SEQUENCE>2
    <FILENAME>exhibit301.htm
    <DESCRIPTION>EX-3.01
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    Document 2 - file: exhibit301.htm

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    <FILENAME>fcnca-20230425.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
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    <FILENAME>exhibit301001.jpg
    <DESCRIPTION>GRAPHIC
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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>13
    <FILENAME>Financial_Report.xlsx
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    <SEQUENCE>14
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    <SEQUENCE>15
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    <TYPE>XML
    <SEQUENCE>16
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    <TYPE>JSON
    <SEQUENCE>19
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