v3.8.0.1
Document And Entity Information - USD ($)
12 Months Ended
Dec. 30, 2017
Jan. 27, 2018
Jul. 01, 2017
Entity Information [Line Items]      
Entity Registrant Name TRACTOR SUPPLY CO /DE/    
Entity Central Index Key 0000916365    
Current Fiscal Year End Date --12-30    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 6,200,000,000
Entity Common Stock, Shares Outstanding   125,116,910  
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 30, 2017