v3.22.4
Cover Document
Jan. 04, 2023
Cover Page Document [Abstract]  
Document Period End Date Jan. 04, 2023
Entity Central Index Key 0001402057
Title of 12(b) Security Common stock, par value $0.01 per share
Written Communications false
Entity Incorporation, State or Country Code DE
Document Type 8-K/A
Entity Registrant Name CDW CORP
Entity File Number 001-35985
Entity Tax Identification Number 26-0273989
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
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Trading Symbol CDW
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Flag true