v3.25.2
Cover - USD ($)
 12 Months Ended
Mar. 31, 2025
Jul. 10, 2025
Sep. 30, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Mar. 31, 2025    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Information [Line Items]      
Entity Registrant Name QDM International Inc.    
Entity Central Index Key 0001094032    
Entity File Number 000-27251    
Entity Tax Identification Number 59-3564984    
Entity Incorporation, State or Country Code FL    
Current Fiscal Year End Date --03-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Public Float     $ 419,752,458
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One Room 1030B    
Entity Address, Address Line Two 10/F, Ocean Centre, Harbour City    
Entity Address, Address Line Three 5 Canton Road    
Entity Address, City or Town Tsim Sha Tsui    
Entity Address, Country HK    
Entity Address, Postal Zip Code 000000    
Entity Phone Fax Numbers [Line Items]      
City Area Code + 852    
Local Phone Number 34886893    
Entity Listings [Line Items]      
Title of 12(g) Security Common Stock, par value $0.0001    
Entity Common Stock, Shares Outstanding   291,563,930