Document and Entity Information - shares	6 Months Ended
	Dec. 31, 2019	Feb. 03, 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	Dec. 31, 2019
Document Fiscal Period Focus	Q2
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		275,040