v3.25.2
Cover - shares
 6 Months Ended
Jun. 30, 2025
Jul. 25, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-38156  
Entity Registrant Name TPG RE Finance Trust, Inc.  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 36-4796967  
Entity Address, Address Line One 888 Seventh Avenue  
Entity Address, Address Line Two 35th Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10106  
City Area Code 212  
Local Phone Number 601-4700  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   78,590,582
Entity Central Index Key 0001630472  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Common Stock, par value $0.001 per share    
Document Information [Line Items]    
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol TRTX  
Security Exchange Name NYSE  
6.25% Series C Cumulative Redeemable Preferred Stock    
Document Information [Line Items]    
Title of 12(b) Security 6.25% Series C Cumulative Redeemable Preferred Stock, par value $0.001 per share  
Trading Symbol TRTX PRC  
Security Exchange Name NYSE