Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Jan. 30, 2021
Feb. 25, 2021
Aug. 01, 2020
Document and Entity Information      
Entity Registrant Name MICHAELS COMPANIES, INC.    
Entity Central Index Key 0001593936    
Document Type 10-K    
Document Period End Date Jan. 30, 2021    
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-36501    
Entity Tax Identification Number 37-1737959    
Entity Address, Address Line One 3939 West John Carpenter Freeway    
Entity Address, City or Town Irving    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75063    
Entity Incorporation, State or Country Code DE    
City Area Code 972    
Local Phone Number 409-1300    
Amendment Flag false    
Current Fiscal Year End Date --01-30    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Title of 12(b) Security Common Stock    
Trading Symbol MIK    
Security Exchange Name NASDAQ    
Entity Interactive Data Current Yes    
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 530,710,971
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Common Stock, Shares Outstanding   141,610,518