General form of registration statement for all companies including face-amount certificate companies

Document And Entity Information

Document And Entity Information - shares
3 Months Ended
Aug. 31, 2018
Oct. 08, 2018
Document and Entity Information [Abstract]    
Entity Registrant Name CLS HOLDINGS USA, INC.  
Document Type S-1  
Current Fiscal Year End Date --05-31  
Entity Common Stock, Shares Outstanding   90,132,170
Amendment Flag false  
Entity Central Index Key 0001522222  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Document Period End Date Aug. 31, 2018  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Entity Small Business true  
Entity Emerging Growth Company false