FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights (Parentheticals) (Details) - Franklin Ethereum ETF [Member]				3 Months Ended		5 Months Ended	9 Months Ended
		Jun. 27, 2024 USD ($) Ethereum CreationUnits $ / item shares	May 21, 2024 USD ($) $ / shares shares	Dec. 31, 2025 USD ($) Ethereum shares	Dec. 31, 2024 USD ($) Ethereum shares	Dec. 31, 2024 USD ($) Ethereum shares	Dec. 31, 2025 USD ($) Ethereum shares	Sep. 30, 2025 Ethereum	Mar. 31, 2025 Ethereum	Sep. 30, 2024 Ethereum	Jul. 22, 2024 Ethereum
COMBINED FINANCIAL HIGHLIGHTS [Abstract]
Stock issued during the period shares new issues (in Shares) | shares				450,000	250,000	1,750,000	2,700,000
Proceeds from issuance of Shares (in Dollars)		$ 2,619,241.2				$ 42,553,442	$ 72,528,985
Payment to redeem shares (in Dollars)	[1]			$ 21,491,502	$ 3,878,497	$ 4,901,065	$ 46,172,381
Quantity of ether (in Ethereum) | Ethereum		760		19,348.465	12,540	12,540	19,348.465	22,020.1883	11,780.2062	11,780	760
Quantity of ether purchased (in Ethereum) (in Ethereum) | Ethereum		760		3,415.02	1,900	13,300	20,498.8764
Cost of Ether per unit (in Dollars per Item) | $ / item		3,446.37
Initial Seed Shares [Member]
COMBINED FINANCIAL HIGHLIGHTS [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 (in Dollars)			$ 100,000
Payment to redeem shares (in Dollars)		$ 100,000
Seed Creation Units [Member]
COMBINED FINANCIAL HIGHLIGHTS [Abstract]
Stock issued during the period shares new issues (in Shares) | shares		100,000
Number of seed creation units issued (in CreationUnits) | CreationUnits		2
Number of Ether per creation unit		380
Number of Ether per share		0.0076
Quantity of ether (in Ethereum) | Ethereum		760

[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.