| Cover | Jan. 31, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jan. 31, 2022 |
| Entity Registrant Name | GREENLIGHT CAPITAL RE, LTD. |
| Entity Incorporation, State or Country Code | E9 |
| Entity File Number | 001-33493 |
| Entity Address, Address Line One | 65 Market Street |
| Entity Address, Address Line Two | Suite 1207, Jasmine Court |
| Entity Address, City or Town | Camana Bay |
| Entity Address, Country | KY |
| Entity Address, Postal Zip Code | KY1-1205 |
| City Area Code | 345 |
| Local Phone Number | 943-4573 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Ordinary Shares |
| Trading Symbol | GLRE |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001385613 |
| Amendment Flag | false |
