v3.10.0.1
Document And Entity Information - shares
6 Months Ended
Dec. 28, 2018
Jan. 25, 2019
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 28, 2018  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Registrant Name FABRINET  
Entity Central Index Key 0001408710  
Current Fiscal Year End Date --06-28  
Entity Filer Category Large Accelerated Filer  
Trading Symbol FN  
Entity Common Stock, Shares Outstanding   36,904,637
Entity Emerging Growth Company false  
Entity Small Business false