Document And Entity Information
Jul. 07, 2021
Document And Entity Information [Abstract]  
Document Type 8-K/A
Document Period End Date Jul. 07, 2021
Entity Registrant Name WD-40 COMPANY
Entity Incorporation, State or Country Code DE
Entity File Number 000-06936
Entity Tax Identification Number 95-1797918
Entity Address, Address Line One 9715 Businesspark Avenue
Entity Address, City or Town San Diego
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92131
City Area Code 619
Local Phone Number 275-1400
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 $0.001 per share
Trading Symbol WDFC
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0000105132
Amendment Flag false