XML 13 R1.htm IDEA: XBRL DOCUMENT v3.19.3
Cover
Oct. 31, 2019
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 31, 2019
Entity File Number 001-35985
Entity Registrant Name CDW CORPORATION
Entity Central Index Key 0001402057
Entity Tax Identification Number 26-0273989
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 75 Tri-State International
Entity Address, City or Town Lincolnshire
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60069
City Area Code 847
Local Phone Number 465-6000
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, par value $0.01 per share
Trading Symbol CDW
Security Exchange Name NASDAQ
Entity Emerging Growth Company false