v3.26.1
Cover Page - shares
6 Months Ended
Jun. 30, 2026
Jul. 31, 2026
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Document Quarterly Report true  
Document Transition Report false  
Entity Registrant Name CERES ORION L.P.  
Entity Central Index Key 0001227265  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Interactive Data Current Yes  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Address, State or Province NY  
Entity Incorporation, State or Country Code NY  
Entity Address, Address Line One 1585 Broadway  
Entity Address, City or Town New York  
Entity Address, Postal Zip Code 10036  
City Area Code 855  
Local Phone Number 672-4468  
Entity Tax Identification Number 22-3644546  
Entity Shell Company false  
Entity File Number 0-50271  
Capital Unit, Class A [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   63,244.8578
Capital Unit Class Z [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,359.9112