XML 14 R1.htm IDEA: XBRL DOCUMENT v3.25.2
Cover - USD ($)
 12 Months Ended
Mar. 31, 2025
Jun. 03, 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 FRANKLIN ETHEREUM TRUST    
Entity Central Index Key 0002011535    
Entity File Number 001-042169    
Entity Tax Identification Number 99-6268769    
Entity Incorporation, State or Country Code DE    
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 true    
Entity Ex Transition Period false    
Entity Public Float     $ 27,592,405
Entity Contact Personnel [Line Items]      
Entity Address, Address Line One One Franklin Parkway    
Entity Address, City or Town San Mateo    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 94403    
Entity Phone Fax Numbers [Line Items]      
City Area Code 650    
Local Phone Number 312-2000    
Entity Listings [Line Items]      
Title of 12(b) Security Franklin Ethereum ETF Shares    
Trading Symbol EZET    
Security Exchange Name CboeBZX    
Entity Common Stock, Shares Outstanding   1,700,000