Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Feb. 02, 2019
Mar. 12, 2019
Aug. 04, 2018
Document and Entity Information      
Entity Registrant Name Michaels Companies, Inc.    
Entity Central Index Key 0001593936    
Document Type 10-K    
Document Period End Date Feb. 02, 2019    
Amendment Flag false    
Current Fiscal Year End Date --02-02    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 1,978,572,495
Entity Common Stock, Shares Outstanding   157,773,090  
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false