v3.26.1
Cover - shares
3 Months Ended
Mar. 31, 2026
Jul. 07, 2026
Cover [Abstract]    
Entity Registrant Name SENTINEL HOLDINGS LTD  
Entity Central Index Key 0000889353  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Current Reporting Status Yes  
Document Period End Date Mar. 31, 2026  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Entity Common Stock Shares Outstanding   9,690,429
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 333-282424  
Entity Incorporation State Country Code NV  
Entity Tax Identification Number 95-4363944  
Entity Address Address Line 1 44262 North Division Street  
Entity Address City Or Town Lancaster  
Entity Address State Or Province CA  
Entity Address Postal Zip Code 93535  
City Area Code 408  
Local Phone Number 750-0038  
Entity Interactive Data Current Yes