v3.26.1
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2025
Feb. 28, 2026
Document Information [Line Items]    
Document Type 10-K  
Amendment Flag false  
Document Period End Date Dec. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus FY  
Entity Registrant Name CERES CLASSIC L.P.  
Entity Central Index Key 0001066656  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Interactive Data Current Yes  
Entity Address, State or Province NY  
Entity Public Float $ 127,487,765  
Entity Voluntary Filers No  
Entity File Number 000-25603  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 13-4018068  
Entity Address, Address Line One Ceres Managed Futures LLC  
Entity Address, Address Line Two 1585 Broadway  
Entity Address, City or Town New York  
Entity Address, Postal Zip Code 10036  
Local Phone Number 672-4468  
City Area Code 855  
Document Annual Report true  
Document Transition Report false  
Auditor Name Ernst & Young LLP  
Auditor Firm ID 42  
Auditor Location Boston, MA  
Document Financial Statement Error Correction [Flag] false  
ICFR Auditor Attestation Flag false  
Capital Unit, Class A [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   4,272,540.921
Capital Unit Class Z [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   11,079.649