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Cover - shares
 9 Months Ended
Sep. 30, 2025
Oct. 31, 2025
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2025  
Document Transition Report false  
Entity File Number 001-33493  
Entity Registrant Name GREENLIGHT CAPITAL RE, LTD.  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 65 Market Street  
Entity Address, Address Line Two Suite 1207, Jasmine Court  
Entity Address, Address Line Three P.O. Box 31110  
Entity Address, City or Town Camana Bay  
Entity Address, Country KY  
Entity Address, Postal Zip Code KY1-1205  
City Area Code 205  
Local Phone Number 291-3440  
Title of 12(b) Security Ordinary Shares  
Trading Symbol GLRE  
Security Exchange Name NASDAQ  
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   34,099,226
Entity Central Index Key 0001385613  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q3  
Amendment Flag false