Organization - Additional Information (Details)					2 Months Ended
		Jun. 27, 2024 USD ($) Ether $ / shares shares	May 21, 2024 USD ($) $ / shares shares	Feb. 08, 2024 Creationunits	Sep. 30, 2024 USD ($)
Nature Of Operations [Line Items]
Date of incorporation					Feb. 08, 2024
Security exchange name					CboeBZX
Threshold multiples in which shares are issued | Creationunits				50,000
Trading symbol					EZET
Proceeds from Issuance of Common Stock | $	[1]				$ 36,336,503
BATS [Member]
Nature Of Operations [Line Items]
Security exchange name					CboeBZX
Initial Seed Shares [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares			4,000
Shares Issued, Price Per Share | $ / shares			$ 25
Proceeds from Issuance of Common Stock | $			$ 100,000
Payments for Repurchase of Common Stock | $		$ 100,000	$ 100,000
Seed Creation Ether Units [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares		760
Shares Issued, Price Per Share | $ / shares		$ 3,446.37
Proceeds from Issuance of Common Stock | $		$ 2,619,241.2
Ratio Per Creation Unit Based on Share Price | Ether		380
Common Stock Backed Up By Units [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares		100,000
Creation Units Ether [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares		2
Franklin Ethereum ETF [Member]
Nature Of Operations [Line Items]
Date of incorporation					Feb. 08, 2024
Threshold multiples in which shares are issued | Creationunits				50,000
Trading symbol					EZET
Proceeds from Issuance of Common Stock | $	[1]				$ 36,336,503
Franklin Ethereum ETF [Member] | BATS [Member]
Nature Of Operations [Line Items]
Security exchange name					CboeBZX
Franklin Ethereum ETF [Member] | Initial Seed Shares [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares			4,000
Shares Issued, Price Per Share | $ / shares			$ 25
Proceeds from Issuance of Common Stock | $			$ 100,000
Payments for Repurchase of Common Stock | $		$ 100,000	$ 100,000
Franklin Ethereum ETF [Member] | Seed Creation Ether Units [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares		760
Shares Issued, Price Per Share | $ / shares		$ 3,446.37
Proceeds from Issuance of Common Stock | $		$ 2,619,241.2
Ratio Per Creation Unit Based on Share Price | Ether		380
Franklin Ethereum ETF [Member] | Common Stock Backed Up By Units [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares		100,000
Franklin Ethereum ETF [Member] | Creation Units Ether [Member]
Nature Of Operations [Line Items]
Stock issued during the period shares new issues | shares		2

[1] No comparative period presented as the Fund’s operations commenced on July 23, 2024.