Document and Entity Information - shares	3 Months Ended
	Nov. 30, 2019	Jan. 14, 2020
Document And Entity Information
Entity Registrant Name	MCTC Holdings, Inc.
Entity Central Index Key	0001413488
Document Type	10-Q
Document Period End Date	Nov. 30, 2019
Amendment Flag	false
Current Fiscal Year End Date	--08-31
Document Fiscal Period Focus	Q1
Is Entity a Shell Company?	false
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity File Number	000-27039
Entity Common Stock, Shares Outstanding		15,093,128
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Document Fiscal Year Focus	2020
Entity Emerging Growth Company	true
Entity Small Business	true
Entity Ex Transition Period	false