v3.19.3
Cover Page - shares
3 Months Ended
Sep. 27, 2019
Oct. 25, 2019
Cover [Abstract]    
Document Type 10-Q  
Current Fiscal Year End Date --06-26  
Amendment Flag false  
Document Period End Date Sep. 27, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Entity Central Index Key 0001408710  
Entity Registrant Name Fabrinet  
Trading Symbol FN  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Interactive Data Current Yes  
Security Exchange Name NYSE  
Title of 12(b) Security Ordinary Shares  
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-34775  
Entity Incorporation, State or Country Code E9  
Entity Tax Identification Number 98-1228572  
Entity Address, Address Line One c/o Intertrust Corporate Services (Cayman) Limited  
Entity Address, Address Line Two 190 Elgin Avenue  
Entity Address, City or Town George Town  
Entity Address, Country KY  
Entity Address, Postal Zip Code KY1-9005  
City Area Code 66  
Local Phone Number 2-524-9600  
Entity Common Stock, Shares Outstanding   37,002,648