    <SEC-DOCUMENT>0000875357-21-000059-index.html : 20211020
    <SEC-HEADER>0000875357-21-000059.hdr.sgml : 20211020
    <ACCEPTANCE-DATETIME>20211020080226
    ACCESSION NUMBER:		0000875357-21-000059
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		30
    CONFORMED PERIOD OF REPORT:	20211020
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20211020
    DATE AS OF CHANGE:		20211020

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BOK FINANCIAL CORP
    		CENTRAL INDEX KEY:			0000875357
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		IRS NUMBER:				731373454
    		STATE OF INCORPORATION:			OK
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37811
    		FILM NUMBER:		211332759

    	BUSINESS ADDRESS:
    		STREET 1:		BANK OF OKLAHOMA TOWER
    		STREET 2:		BOSTON AVENUE AT SECOND STREET
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74172
    		BUSINESS PHONE:		9185886000

    	MAIL ADDRESS:
    		STREET 1:		BANK OF OKLAHOMA TOWER
    		STREET 2:		P O BOX 2300
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74192

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BOK FINANCIAL CORP ET AL
    		DATE OF NAME CHANGE:	19950626
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>bokf-20211020.htm
    <DESCRIPTION>8-K
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    Document 1 - file: bokf-20211020.htm

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    <DOCUMENT>
    <TYPE>EX-99
    <SEQUENCE>2
    <FILENAME>a20210930bokfconferencec.htm
    <DESCRIPTION>EX-99
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    <FILENAME>bokf-20211020.xsd
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    <SEQUENCE>26
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    <SEQUENCE>28
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    <SEQUENCE>30
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