v3.8.0.1
Document and Entity Information - shares
6 Months Ended
Dec. 31, 2017
Jan. 02, 2018
Document And Entity Information [Abstract]    
Entity Registrant Name STRATTEC SECURITY CORP  
Entity Central Index Key 0000933034  
Document Type 10-Q  
Document Period End Date Dec. 31, 2017  
Amendment Flag false  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q2  
Trading Symbol STRT  
Current Fiscal Year End Date --07-01  
Entity Filer Category Accelerated Filer  
Entity Common Stock Shares Outstanding   3,704,230