v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Oct. 30, 2018
Document And Entity Information [Abstract]    
Entity Registrant Name FATE THERAPEUTICS INC  
Entity Central Index Key 0001434316  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Trading Symbol FATE  
Entity Common Stock, Shares Outstanding   64,518,813
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period true