    <SEC-DOCUMENT>0001308179-21-000106-index.html : 20210326
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    <ACCEPTANCE-DATETIME>20210326160539
    ACCESSION NUMBER:		0001308179-21-000106
    CONFORMED SUBMISSION TYPE:	PRE 14A
    PUBLIC DOCUMENT COUNT:		53
    CONFORMED PERIOD OF REPORT:	20210520
    FILED AS OF DATE:		20210326
    DATE AS OF CHANGE:		20210326

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CDW Corp
    		CENTRAL INDEX KEY:			0001402057
    		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-CATALOG & MAIL-ORDER HOUSES [5961]
    		IRS NUMBER:				260273989
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		PRE 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35985
    		FILM NUMBER:		21777324

    	BUSINESS ADDRESS:
    		STREET 1:		200 N MILWAUKEE AVENUE
    		CITY:			VERNON HILLS
    		STATE:			IL
    		ZIP:			60061
    		BUSINESS PHONE:		847-465-6000

    	MAIL ADDRESS:
    		STREET 1:		200 N MILWAUKEE AVENUE
    		CITY:			VERNON HILLS
    		STATE:			IL
    		ZIP:			60061

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	VH Holdings, Inc.
    		DATE OF NAME CHANGE:	20070605
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>PRE 14A
    <SEQUENCE>1
    <FILENAME>lcdw2021_pre14a.htm
    <DESCRIPTION>CDW CORPORATION - PRE 14A
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    Document 1 - file: lcdw2021_pre14a.htm

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    <FILENAME>box1.jpg
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    Document 2 - file: box1.jpg

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    Document 3 - file: checkbox1.jpg

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    Document 4 - file: footer.jpg

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    Document 5 - file: lcdwx1x1.jpg

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    Document 7 - file: lcdwx4x1.jpg

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    Document 8 - file: lcdwx4x2.jpg

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    Document 10 - file: lcdwx5x1.jpg

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    Document 11 - file: lcdwx5x2.jpg

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    Document 12 - file: lcdwx5x3.jpg

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    Document 13 - file: lcdwx5x4.jpg

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    Document 14 - file: lcdwx5x5.jpg

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    Document 15 - file: lcdwx6x1.jpg

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    Document 16 - file: lcdwx10x1a.jpg

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    Document 17 - file: lcdwx11x1.jpg

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    Document 18 - file: lcdwx13x1a.jpg

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    Document 19 - file: lcdwx13x2a.jpg

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    Document 22 - file: lcdwx15x1.jpg

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    Document 23 - file: lcdwx15x2a.jpg

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    Document 24 - file: lcdwx16x1.jpg

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    Document 25 - file: lcdwx16x2.jpg

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    Document 26 - file: lcdwx16x3.jpg

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    Document 27 - file: lcdwx16x4a.jpg

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    Document 28 - file: lcdwx18x1.jpg

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    Document 30 - file: lcdwx25x2.jpg

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    Document 31 - file: lcdwx26x1.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 32 - file: lcdwx26x2.jpg

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    <SEQUENCE>33
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    <DESCRIPTION>GRAPHIC
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    Document 33 - file: lcdwx26x3.jpg

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    Document 34 - file: lcdwx27x1.jpg

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    Document 35 - file: lcdwx27x2.jpg

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    Document 36 - file: lcdwx27x3.jpg

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    Document 37 - file: lcdwx28x1.jpg

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    Document 38 - file: lcdwx28x2.jpg

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    Document 40 - file: lcdwx29x1.jpg

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