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Cover
12 Months Ended
Oct. 31, 2019
shares
Entity Addresses [Line Items]  
Document Type 20-F
Amendment Flag false
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Document Period End Date Oct. 31, 2019
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2019
Current Fiscal Year End Date --10-31
Entity File Number 000-53646
Entity Registrant Name GROWN ROGUE INTERNATIONAL INC.
Entity Central Index Key 0001463000
Entity Incorporation, State or Country Code Z4
Entity Address, Address Line One 550 Airport Road
Entity Address, City or Town Medford
Entity Address, State or Province OR
Entity Address, Country US
Entity Address, Postal Zip Code 97504
Title of 12(b) Security Common Stock, no par value
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status No
Entity Interactive Data Current No
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Entity Common Stock, Shares Outstanding 73,219,916
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One 550 Airport Road
Entity Address, City or Town Medford
Entity Address, State or Province OR
Entity Address, Country US
Entity Address, Postal Zip Code 97504
City Area Code 458
Local Phone Number 226-2100
Contact Personnel Name Obie Strickler