v3.25.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2025
May 07, 2025
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Document Quarterly Report true  
Document Transition Report false  
Entity Registrant Name GLOBAL INDEMNITY GROUP, LLC  
Entity Central Index Key 0001494904  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell 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, Country DE  
Entity Address, Postal Zip Code 19801  
City Area Code 302  
Local Phone Number 691-6276  
Title of each class Class A Common Shares  
Trading Symbol GBLI  
Name of each exchange on which registered NYSE  
Class A Common Shares    
Document Information [Line Items]    
Entity Ordinary Shares, Shares Outstanding   10,481,076
Class B Common Shares    
Document Information [Line Items]    
Entity Ordinary Shares, Shares Outstanding   3,793,612
Class A-2 Common Shares    
Document Information [Line Items]    
Entity Ordinary Shares, Shares Outstanding   550,000