Document and Entity Information - USD ($)	12 Months Ended
	Aug. 31, 2021	Dec. 14, 2021	Aug. 31, 2020
Document And Entity Information
Entity Registrant Name	CANNABIS GLOBAL, INC.
Entity Central Index Key	0001413488
Document Type	10-K
Document Period End Date	Aug. 31, 2021
Amendment Flag	false
Current Fiscal Year End Date	--08-31
Document Fiscal Period Focus	FY
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
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		134,055,661
Entity public float			$ 2,323,757
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	NV
Document Fiscal Year Focus	2021
Entity Emerging Growth Company	true
Entity Small Business	true
Entity Ex Transition Period	false