XML 49 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - shares
 9 Months Ended
Mar. 31, 2020
May 01, 2020
Entity Registrant Name ETF Managers Group Commodity Trust I  
Entity Central Index Key 0001610940  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Document Type 10-Q  
Document Period End Date Mar. 31, 2020  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Interactive Data Current Yes  
Entity File Number 001-36851  
Entity Incorporation State Country Code DE  
Sit Rising Rate ETF    
Entity Common Stock, Shares Outstanding   250,040
Breakwave Dry Bulk Shipping ETF    
Entity Common Stock, Shares Outstanding   3,800,040