XML 16 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document And Entity Information - USD ($)
 12 Months Ended
Aug. 29, 2020
Oct. 01, 2020
Feb. 29, 2020
Class of Stock [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Aug. 29, 2020    
Document Transition Report false    
Entity File Number 1-14130    
Entity Registrant Name MSC INDUSTRIAL DIRECT CO., INC.    
Entity Incorporation, State or Country Code NY    
Entity Tax Identification Number 11-3289165    
Entity Address, Address Line One 75 Maxess Road    
Entity Address, City or Town Melville    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 11747    
City Area Code 516    
Local Phone Number 812-2000    
Title of 12(b) Security Class A Common Stock, par value $.001    
Trading Symbol MSM    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 2,762,837,744
Documents Incorporated by Reference [Text Block] DOCUMENTS INCORPORATED BY REFERENCE

The registrant’s Proxy Statement for its 2021 annual meeting of shareholders is hereby incorporated by reference into Part III of this Annual Report on Form 10-K.

    
Entity Central Index Key 0001003078    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --08-29    
Amendment Flag false    
Class A Common Stock [Member]      
Class of Stock [Line Items]      
Entity Common Stock, Shares Outstanding   45,762,774  
Class B Common Stock [Member]      
Class of Stock [Line Items]      
Entity Common Stock, Shares Outstanding   9,844,856