v3.25.2
Cover - USD ($)
12 Months Ended
Jun. 30, 2025
Sep. 29, 2025
Dec. 31, 2024
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Jun. 30, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --06-30    
Entity File Number 333-269343    
Entity Registrant Name Protopia Global Holdings Inc.    
Entity Central Index Key 0001959585    
Entity Tax Identification Number 00-0000000    
Entity Incorporation, State or Country Code E9    
Entity Address, Address Line One Room 408B&C, 4th Floor    
Entity Address, Address Line Two Lippo Sun Plaza    
Entity Address, Address Line Three No. 28 Canton Road    
Entity Address, City or Town Tsim Sha Tsui, Kowloon    
Entity Address, Country HK    
Entity Address, Postal Zip Code 00000    
City Area Code (852)    
Local Phone Number 6686-0563    
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     $ 0
Entity Common Stock, Shares Outstanding   21,500,000  
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Name BCRG Group    
Auditor Firm ID 7158    
Auditor Location Irvine, CA