v2.4.0.8
Document and Entity Information
9 Months Ended
Sep. 30, 2014
Nov. 03, 2014
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2014  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q3  
Trading Symbol RGLS  
Entity Registrant Name REGULUS THERAPEUTICS INC.  
Entity Central Index Key 0001505512  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   48,603,831