Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v3.20.2
Document And Entity Information - USD ($)
12 Months Ended
May 31, 2020
Aug. 24, 2020
Nov. 30, 2019
Document Information Line Items      
Entity Registrant Name CLS HOLDINGS USA, INC.    
Document Type 10-K    
Current Fiscal Year End Date --05-31    
Entity Common Stock, Shares Outstanding   126,521,416  
Entity Public Float     $ 20,123,457
Amendment Flag false    
Entity Central Index Key 0001522222    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Non-accelerated Filer    
Entity Well-known Seasoned Issuer No    
Document Period End Date May 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Interactive Data Current Yes