Cover Page - shares	2 Months Ended
	Sep. 30, 2024	Nov. 01, 2024
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-042169
Entity Registrant Name	FRANKLIN ETHEREUM TRUST
Entity Central Index Key	0002011535
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	99-6268769
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
City Area Code	650
Local Phone Number	312-2000
Title of 12(b) Security	Franklin Ethereum ETF Shares
Trading Symbol	EZET
Security Exchange Name	CboeBZX
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
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,650,000