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Cover Page - shares
 6 Months Ended
Jun. 30, 2024
Aug. 05, 2024
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2024  
Document Transition Report false  
Entity File Number 001-41572  
Entity Registrant Name Star Holdings  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 37-6762818  
Entity Address, Address Line One 1114 Avenue of the Americas, 39th Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10036  
City Area Code 212  
Local Phone Number 930-9400  
Title of 12(b) Security Common Shares of Beneficial Interest, $0.001 par value  
Trading Symbol STHO  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Common Stock, Shares, Outstanding   13,319,552
Entity Central Index Key 0001953366  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q2  
Amendment Flag false