<SEC-DOCUMENT>0000929008-17-000033-index.html : 20171213
<SEC-HEADER>0000929008-17-000033.hdr.sgml : 20171213
<ACCEPTANCE-DATETIME>20171213060600
ACCESSION NUMBER:		0000929008-17-000033
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		28
CONFORMED PERIOD OF REPORT:	20171213
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20171213
DATE AS OF CHANGE:		20171213

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WESCO INTERNATIONAL INC
		CENTRAL INDEX KEY:			0000929008
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-ELECTRICAL APPARATUS & EQUIPMENT, WIRING SUPPLIES [5063]
		IRS NUMBER:				251723342
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14989
		FILM NUMBER:		171252967

	BUSINESS ADDRESS:	
		STREET 1:		225 WEST STATION SQUARE DRIVE
		STREET 2:		STE 700
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15219
		BUSINESS PHONE:		4124542200

	MAIL ADDRESS:	
		STREET 1:		225 WEST STATION SQUARE DRIVE
		STREET 2:		STE 700
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15219

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CDW HOLDING CORP
		DATE OF NAME CHANGE:	19971217
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>wcc-8k2018outlook.htm
<DESCRIPTION>FORM 8-K
<TEXT>
Document 1 - file: wcc-8k2018outlook.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>wcc-2018outlooknewsrelease.htm
<DESCRIPTION>NEWS RELEASE
<TEXT>
Document 2 - file: wcc-2018outlooknewsrelease.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>wcc-2018outlookwebcast.htm
<DESCRIPTION>SLIDE PRESENTATION
<TEXT>
Document 3 - file: wcc-2018outlookwebcast.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>wcc-2018outlookwebcast001.jpg
<TEXT>
Document 4 - file: wcc-2018outlookwebcast001.jpg

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<DOCUMENT>
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<SEQUENCE>5
<FILENAME>wcc-2018outlookwebcast002.jpg
<TEXT>
Document 5 - file: wcc-2018outlookwebcast002.jpg

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<DOCUMENT>
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<SEQUENCE>6
<FILENAME>wcc-2018outlookwebcast003.jpg
<TEXT>
Document 6 - file: wcc-2018outlookwebcast003.jpg

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<DOCUMENT>
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<SEQUENCE>7
<FILENAME>wcc-2018outlookwebcast004.jpg
<TEXT>
Document 7 - file: wcc-2018outlookwebcast004.jpg

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<DOCUMENT>
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<SEQUENCE>8
<FILENAME>wcc-2018outlookwebcast005.jpg
<TEXT>
Document 8 - file: wcc-2018outlookwebcast005.jpg

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<DOCUMENT>
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<SEQUENCE>9
<FILENAME>wcc-2018outlookwebcast006.jpg
<TEXT>
Document 9 - file: wcc-2018outlookwebcast006.jpg

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<SEQUENCE>10
<FILENAME>wcc-2018outlookwebcast007.jpg
<TEXT>
Document 10 - file: wcc-2018outlookwebcast007.jpg

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<DOCUMENT>
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<SEQUENCE>11
<FILENAME>wcc-2018outlookwebcast008.jpg
<TEXT>
Document 11 - file: wcc-2018outlookwebcast008.jpg

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<DOCUMENT>
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<SEQUENCE>12
<FILENAME>wcc-2018outlookwebcast009.jpg
<TEXT>
Document 12 - file: wcc-2018outlookwebcast009.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>wcc-2018outlookwebcast010.jpg
<TEXT>
Document 13 - file: wcc-2018outlookwebcast010.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>wcc-2018outlookwebcast011.jpg
<TEXT>
Document 14 - file: wcc-2018outlookwebcast011.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>wcc-2018outlookwebcast012.jpg
<TEXT>
Document 15 - file: wcc-2018outlookwebcast012.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>wcc-2018outlookwebcast013.jpg
<TEXT>
Document 16 - file: wcc-2018outlookwebcast013.jpg

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<SEQUENCE>17
<FILENAME>wcc-2018outlookwebcast014.jpg
<TEXT>
Document 17 - file: wcc-2018outlookwebcast014.jpg

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<SEQUENCE>18
<FILENAME>wcc-2018outlookwebcast015.jpg
<TEXT>
Document 18 - file: wcc-2018outlookwebcast015.jpg

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<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>wcc-2018outlookwebcast016.jpg
<TEXT>
Document 19 - file: wcc-2018outlookwebcast016.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>wcc-2018outlookwebcast017.jpg
<TEXT>
Document 20 - file: wcc-2018outlookwebcast017.jpg

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<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>wcc-2018outlookwebcast018.jpg
<TEXT>
Document 21 - file: wcc-2018outlookwebcast018.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>wcc-2018outlookwebcast019.jpg
<TEXT>
Document 22 - file: wcc-2018outlookwebcast019.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>wcc-2018outlookwebcast020.jpg
<TEXT>
Document 23 - file: wcc-2018outlookwebcast020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>wcc-2018outlookwebcast021.jpg
<TEXT>
Document 24 - file: wcc-2018outlookwebcast021.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>wcc-2018outlookwebcast022.jpg
<TEXT>
Document 25 - file: wcc-2018outlookwebcast022.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>wcc-2018outlookwebcast023.jpg
<TEXT>
Document 26 - file: wcc-2018outlookwebcast023.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>wcc-2018outlookwebcast024.jpg
<TEXT>
Document 27 - file: wcc-2018outlookwebcast024.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>28
<FILENAME>wescointllogoa82.jpg
<TEXT>
Document 28 - file: wescointllogoa82.jpg

</DOCUMENT>
</SEC-DOCUMENT>