    <SEC-DOCUMENT>0001039684-20-000073-index.html : 20201027
    <SEC-HEADER>0001039684-20-000073.hdr.sgml : 20201027
    <ACCEPTANCE-DATETIME>20201027163013
    ACCESSION NUMBER:		0001039684-20-000073
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		33
    CONFORMED PERIOD OF REPORT:	20201027
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20201027
    DATE AS OF CHANGE:		20201027

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ONEOK INC /NEW/
    		CENTRAL INDEX KEY:			0001039684
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
    		IRS NUMBER:				731520922
    		STATE OF INCORPORATION:			OK
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13643
    		FILM NUMBER:		201264415

    	BUSINESS ADDRESS:
    		STREET 1:		100 WEST 5TH ST
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74103
    		BUSINESS PHONE:		9185887000

    	MAIL ADDRESS:
    		STREET 1:		100 WEST 5TH ST
    		CITY:			TULSA
    		STATE:			OK
    		ZIP:			74103

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	WAI INC
    		DATE OF NAME CHANGE:	19970519
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>oke-20201027.htm
    <DESCRIPTION>OKE Q3 2020 EARNINGS RELEASE
    <TEXT>
    Document 1 - file: oke-20201027.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>okeq32020earningsrelease.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: okeq32020earningsrelease.htm

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    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>3
    <FILENAME>oke-20201027.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
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    Document 3 - file: oke-20201027.xsd

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    <FILENAME>oke-20201027_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
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    Document 5 - file: oke-20201027_def.xml

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    <DESCRIPTION>GRAPHIC
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    <FILENAME>okeq32020earningsrelease001.jpg
    <DESCRIPTION>GRAPHIC
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    Document 9 - file: okeq32020earningsrelease001.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 10 - file: okeq32020earningsrelease002.jpg

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    <SEQUENCE>11
    <FILENAME>okeq32020earningsrelease003.jpg
    <DESCRIPTION>GRAPHIC
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    Document 11 - file: okeq32020earningsrelease003.jpg

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    Document 12 - file: okeq32020earningsrelease004.jpg

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    <FILENAME>okeq32020earningsrelease014.jpg
    <DESCRIPTION>GRAPHIC
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    Document 22 - file: okeq32020earningsrelease014.jpg

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    <SEQUENCE>23
    <FILENAME>okeq32020earningsrelease015.jpg
    <DESCRIPTION>GRAPHIC
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    Document 23 - file: okeq32020earningsrelease015.jpg

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    <SEQUENCE>24
    <FILENAME>okeq32020earningsrelease016.jpg
    <DESCRIPTION>GRAPHIC
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    Document 24 - file: okeq32020earningsrelease016.jpg

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    <SEQUENCE>25
    <FILENAME>okeq32020earningsrelease017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: okeq32020earningsrelease017.jpg

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>26
    <FILENAME>oke-20201027_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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    Document 26 - RAW XML: oke-20201027_htm.xml

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    <SEQUENCE>27
    <FILENAME>R1.htm
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    Document 27 - file: R1.htm

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>28
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 28 - file: Financial_Report.xlsx

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    <TYPE>XML
    <SEQUENCE>29
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    <TEXT>
    Document 29 - file: Show.js

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    <TYPE>XML
    <SEQUENCE>30
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 30 - file: report.css

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>31
    <FILENAME>FilingSummary.xml
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    <TEXT>
    Document 31 - file: FilingSummary.html

    Document 31 - RAW XML: FilingSummary.xml

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    <TYPE>JSON
    <SEQUENCE>33
    <FILENAME>MetaLinks.json
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    Document 33 - file: MetaLinks.json

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    <TYPE>ZIP
    <SEQUENCE>34
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