Document and Entity Information - shares	3 Months Ended
	Sep. 30, 2016	Nov. 08, 2016
Document And Entity Information Abstract
Entity Registrant Name	Lake Forest Minerals Inc.
Entity Central Index Key	0001441082
Trading Symbol	lakf
Current Fiscal Year End Date	--06-30
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		11,000,000
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Amendment Flag	false
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1