XML 12 R1.htm IDEA: XBRL DOCUMENT v3.24.3
Cover - shares
 9 Months Ended
Sep. 30, 2024
Oct. 31, 2024
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2024  
Document Transition Report false  
Entity File Number 001-41862  
Entity Registrant Name Hamilton Insurance Group, Ltd.  
Entity Incorporation, State or Country Code D0  
Entity Tax Identification Number 98-1153847  
Entity Address, Address Line One Wellesley House North, 1st Floor  
Entity Address, Address Line Two 90 Pitts Bay Road  
Entity Address, City or Town Pembroke  
Entity Address, Postal Zip Code HM 08  
Entity Address, Country BM  
City Area Code 441  
Local Phone Number 405-5200  
Title of 12(b) Security Class B common shares, par value $0.01 per share  
Trading Symbol HG  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   64,196,974
Entity Central Index Key 0001593275  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q3