v3.26.3
Cover - USD ($)
12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Oct. 07, 2026
Oct. 31, 2025
Cover [Abstract]        
Document Type 10-K      
Amendment Flag false      
Document Annual Report true      
Document Transition Report false      
Document Period End Date Apr. 30, 2026      
Document Fiscal Period Focus FY      
Document Fiscal Year Focus 2026      
Current Fiscal Year --04-30      
Entity File Number 000-56822      
Entity Registrant Name MAG MAGNA CORP.      
Entity Central Index Key 0001949864      
Entity Tax Identification Number 61-1744826      
Entity Incorporation, State or Country Code WY      
Entity Address, Address Line One 4005 West Reno Avenue      
Entity Address, Address Line Two Suite F      
Entity Address, City or Town Las Vegas      
Entity Address, State or Province NV      
Entity Address, Postal Zip Code 89118      
City Area Code 702      
Local Phone Number 595-2247      
Title of 12(g) Security Common Stock      
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      
Public Float       $ 520,185
Entity Common Stock, Shares Outstanding     24,294,047  
ICFR Auditor Attestation Flag false      
Document Financial Statement Error Correction [Flag] false      
Auditor Firm Id 6993 6258    
Auditor Name Boladale Lawal & CO Mac Accounting Group & CPAs, LLP    
Auditor Location Lagos, Nigeria Midvale, Utah