Document and Entity Information
May 27, 2020
Cover [Abstract]  
Entity Registrant Name Coupa Software Incorporated
Amendment Flag false
Entity Central Index Key 0001385867
Document Type 8-K
Document Period End Date May 27, 2020
Entity Incorporation State Country Code DE
Entity File Number 001-37901
Entity Tax Identification Number 20-4429448
Entity Address, Address Line One 1855 S. Grant Street
Entity Address, City or Town San Mateo
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94402
City Area Code 650
Local Phone Number 931-3200
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.0001 per share
Trading Symbol COUP
Security Exchange Name NASDAQ
Entity Emerging Growth Company false