v3.25.2
Cover - USD ($)
12 Months Ended
May 31, 2025
Sep. 22, 2025
Nov. 29, 2024
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date May 31, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --05-31    
Entity File Number 333-146758    
Entity Registrant Name CANNABIS BIOSCIENCE INTERNATIONAL HOLDINGS, INC.    
Entity Central Index Key 0001411057    
Entity Tax Identification Number 84-4901299    
Entity Incorporation, State or Country Code CO    
Entity Address, Address Line One 6201 Bonhomme Road    
Entity Address, Address Line Two Suite 435N    
Entity Address, City or Town Houston    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77036    
City Area Code 214    
Local Phone Number 733-0868    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Elected Not To Use the Extended Transition Period false    
Entity Shell Company false    
Entity Public Float     $ 2,900,000
Entity Common Stock, Shares Outstanding   11,626,749,347  
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Name Victor Mokuolu, CPA PLLC    
Auditor Location Houston, Texas    
Auditor Firm ID 6771