Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Oct. 31, 2020
Nov. 24, 2020
Document and Entity Information    
Entity Registrant Name MICHAELS COMPANIES, INC.  
Entity Central Index Key 0001593936  
Document Type 10-Q  
Document Period End Date Oct. 31, 2020  
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-36501  
Entity Tax Identification Number 37-1737959  
Entity Address, Address Line One 8000 Bent Branch Drive  
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 Q3  
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 Filer Category Large Accelerated Filer  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   147,649,500