Segment Information - Additional Information (Detail) |
3 Months Ended |
|---|---|
|
Mar. 31, 2026
Segment
| |
| Segment Reporting Information [Line Items] | |
| Number of reportable segments | 3 |
| Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | srt:ChiefExecutiveOfficerMember |
| Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description | The Company analyzes the operating performance of each segment using the segment’s income (loss). Segment income (loss) does not equate to “net income (loss)” as determined in accordance with U.S. GAAP but is the measure of segment profit or loss used by the Company's Chief Operating Decision Maker ("CODM"), the Chief Executive Officer of Global Indemnity Group, LLC, to evaluate segment performance and allocate resources, and consistent with authoritative guidance, is the measure of segment performance presented below. |