v3.25.2
Cover - USD ($)
 12 Months Ended
May 31, 2025
Sep. 15, 2025
Nov. 30, 2024
Cover [Abstract]      
Entity Registrant Name BLACKWELL 3D CONSTRUCTION CORP.    
Entity Central Index Key 0001495648    
Document Type 10-K    
Amendment Flag false    
Entity Voluntary Filers No    
Current Fiscal Year End Date --05-31    
Entity Well Known Seasoned Issuer No    
Entity Small Business true    
Entity Shell Company false    
Entity Emerging Growth Company true    
Entity Current Reporting Status Yes    
Document Period End Date May 31, 2025    
Entity Filer Category Non-accelerated Filer    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Entity Ex Transition Period false    
Entity Common Stock Shares Outstanding   37,997,373  
Entity Public Float     $ 3,963
Entity File Number 000-54452    
Entity Incorporation State Country Code NV    
Entity Tax Identification Number 80-0778461    
Entity Address Address Line 1 706-12 Bayswater Bay By Omniyat    
Entity Address Address Line 2 Business Bay    
Entity Address City Or Town Dubai    
Entity Address Postal Zip Code 00000    
City Area Code 702    
Local Phone Number 7180807    
Document Annual Report true    
Document Transition Report false    
Entity Address Country AE    
Entity Interactive Data Current Yes    
Document Fin Stmt Error Correction Flag false    
Auditor Firm Id 6771    
Auditor Location Houston, Texas    
Auditor Name Victor Mokuolu, CPA PLLC