| Document And Entity Information | Aug. 07, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 07, 2024 |
| Entity Registrant Name | GLOBAL INDEMNITY GROUP, LLC |
| Entity Central Index Key | 0001494904 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-34809 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 85-2619578 |
| Entity Address, Address Line One | 112 S. French Street |
| Entity Address, Address Line Two | Suite 105 |
| Entity Address, City or Town | Wilmington |
| Entity Address, State or Province | DE |
| Entity Address, Postal Zip Code | 19801 |
| City Area Code | 302 |
| Local Phone Number | 691-6276 |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Shares, no par value |
| Trading Symbol | GBLI |
| Security Exchange Name | NYSE |
