Document and Entity Information - shares	6 Months Ended
	May 31, 2020	Jul. 07, 2020
Document and Entity Information
Document Type	10-Q
Amendment Flag	false
Document Period End Date	May 31, 2020
Document Fiscal Year Focus	2020
Entity Current Reporting Status	Yes
Document Fiscal Period Focus	Q2
Entity Registrant Name	Trilogy Metals Inc.
Entity Central Index Key	0001543418
Current Fiscal Year End Date	--11-30
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Title of 12(b) Security	Common Shares
Trading Symbol	TMQ
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		140,965,583
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false