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Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2015
Jul. 28, 2015
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2  
Trading Symbol GBLI  
Entity Registrant Name GLOBAL INDEMNITY PLC  
Entity Central Index Key 0001494904  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Ordinary Shares A    
Document Information [Line Items]    
Entity Ordinary Shares, Shares Outstanding   13,665,096
Ordinary Shares B    
Document Information [Line Items]    
Entity Ordinary Shares, Shares Outstanding   12,061,370