Combined Statement of Changes in Net Assets (Parenthetical)				2 Months Ended
		Jun. 27, 2024 USD ($) Ether $ / shares shares	May 21, 2024 USD ($) $ / shares shares	Sep. 30, 2024 USD ($)
Proceeds from Issuance of Common Stock | $	[1]			$ 36,336,503
Initial Seed Shares [Member]
Stock issued during the period shares new issues | shares			4,000
Payments for Repurchase of Common Stock | $		$ 100,000	$ 100,000
Proceeds from Issuance of Common Stock | $			$ 100,000
Shares Issued, Price Per Share | $ / shares			$ 25
Seed Creation Ether Units [Member]
Stock issued during the period shares new issues | shares		760
Ratio Per Creation Unit Based on Share Price | Ether		380
Proceeds from Issuance of Common Stock | $		$ 2,619,241.2
Shares Issued, Price Per Share | $ / shares		$ 3,446.37
Common Stock Backed Up By Units [Member]
Stock issued during the period shares new issues | shares		100,000
Creation Units Ether [Member]
Stock issued during the period shares new issues | shares		2
Franklin Ethereum ETF [Member]
Proceeds from Issuance of Common Stock | $	[1]			$ 36,336,503
Franklin Ethereum ETF [Member] | Initial Seed Shares [Member]
Stock issued during the period shares new issues | shares			4,000
Payments for Repurchase of Common Stock | $		$ 100,000	$ 100,000
Proceeds from Issuance of Common Stock | $			$ 100,000
Shares Issued, Price Per Share | $ / shares			$ 25
Franklin Ethereum ETF [Member] | Seed Creation Ether Units [Member]
Stock issued during the period shares new issues | shares		760
Ratio Per Creation Unit Based on Share Price | Ether		380
Proceeds from Issuance of Common Stock | $		$ 2,619,241.2
Shares Issued, Price Per Share | $ / shares		$ 3,446.37
Franklin Ethereum ETF [Member] | Common Stock Backed Up By Units [Member]
Stock issued during the period shares new issues | shares		100,000
Franklin Ethereum ETF [Member] | Creation Units Ether [Member]
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.