Document and Entity Information - shares
6 Months Ended
Jun. 30, 2019
Aug. 05, 2019
Document And Entity Information [Abstract]    
Entity registrant name TheRealReal, Inc.  
Trading symbol REAL  
Entity central index key 0001573221  
Current fiscal year end date --12-31  
Entity filer category Non-accelerated Filer  
Document type 10-Q  
Document period end date Jun. 30, 2019  
Document fiscal year focus 2019  
Document fiscal period focus Q2  
Amendment flag false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Small Business false  
Entity common stock, shares outstanding   85,316,361
Entity Current Reporting Status No  
Entity Shell Company false  
Entity File Number 001-38953  
Entity Tax Identification Number 451234222  
Entity Address, Address Line One 55 Francisco Street  
Entity Address, Address Line Two Suite 600  
Entity Address, City or Town San Francisco  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94133  
City Area Code 855  
Local Phone Number 435-5893