XML 19 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 29, 2018
Jan. 26, 2019
Jun. 30, 2018
Entity Information [Line Items]      
Entity Registrant Name TRACTOR SUPPLY CO /DE/    
Entity Central Index Key 0000916365    
Current Fiscal Year End Date --12-29    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 8,300,000,000
Entity Common Stock, Shares Outstanding   121,279,792  
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 29, 2018