SIGNIFICANT ACCOUNTING POLICIES - Creation and Redemption of Shares (Details)				8 Months Ended
		Jun. 27, 2024 USD ($) Ethereum CreationUnits $ / item shares	May 21, 2024 USD ($) $ / shares shares	Mar. 31, 2025 USD ($) Ethereum shares	Jul. 22, 2024 Ethereum
Significant Accounting Policies [Abstract]
Stock issued during the period shares new issues (in Shares) | shares				1,750,000
Proceeds from issuance of shares				$ 42,553,442
Payment to redeem shares	[1]			$ 6,326,233
Number of Ether per creation unit		380
Number of Ether per share		0.0076
Quantity of ether (in Ethereum) | Ethereum		760		11,780.2062	760
Cost of Ether per unit (in Dollars per Item) | $ / item		3,446.37
Franklin Ethereum ETF [Member]
Significant Accounting Policies [Abstract]
Stock issued during the period shares new issues (in Shares) | shares				1,750,000
Proceeds from issuance of shares				$ 42,553,442
Payment to redeem shares	[2]			$ 6,326,233
Number of Ether per creation unit		380
Number of Ether per share		0.0076
Quantity of ether (in Ethereum) | Ethereum		760		11,780.2062	760
Cost of Ether per unit (in Dollars per Item) | $ / item		3,446.37
Initial Seed Shares [Member]
Significant Accounting Policies [Abstract]
Stock issued during the period shares new issues (in Shares) | shares			4,000
Shares issued, price per share (in Dollars per share) | $ / shares			$ 25
Proceeds from issuance of shares			$ 100,000
Payment to redeem shares		$ 100,000
Initial Seed Shares [Member] | Franklin Ethereum ETF [Member]
Significant Accounting Policies [Abstract]
Stock issued during the period shares new issues (in Shares) | shares			4,000
Shares issued, price per share (in Dollars per share) | $ / shares			$ 25
Proceeds from issuance of shares			$ 100,000
Payment to redeem shares		$ 100,000
Seed Creation Units [Member]
Significant Accounting Policies [Abstract]
Stock issued during the period shares new issues (in Shares) | shares		100,000
Proceeds from issuance of shares		$ 2,619,241.2
Number of seed creation units issued (in CreationUnits) | CreationUnits		2
Seed Creation Units [Member] | Franklin Ethereum ETF [Member]
Significant Accounting Policies [Abstract]
Stock issued during the period shares new issues (in Shares) | shares		100,000
Proceeds from issuance of shares		$ 2,619,241.2
Number of seed creation units issued (in CreationUnits) | CreationUnits		2
Ethereum [Member]
Significant Accounting Policies [Abstract]
Number of Ether per creation unit		380
Number of Ether per share		0.0076
Quantity of ether (in Ethereum) | Ethereum		760		11,780.2062
Cost of Ether per unit (in Dollars per Item) | $ / item		3,446.37
Ethereum [Member] | Franklin Ethereum ETF [Member]
Significant Accounting Policies [Abstract]
Number of Ether per creation unit		380
Number of Ether per share		0.0076
Quantity of ether (in Ethereum) | Ethereum		760		11,780.2062
Cost of Ether per unit (in Dollars per Item) | $ / item		3,446.37

[1] Dollar amount of balance represents the cumulative fair value of creation of shares less the redemption of shares, at the time of the specific creation or redemption.

[2] Dollar amount of balance represents the cumulative fair value of creation of shares less the redemption of shares, at the time of the specific creation or redemption.