INVESTMENT IN ETHER - Schedule of Changes in Quantity of Ether Held (Details) - Franklin Ethereum ETF [Member]	2 Months Ended		3 Months Ended		6 Months Ended
	Sep. 30, 2024 USD ($) Ethereum		Sep. 30, 2025 USD ($) Ethereum		Sep. 30, 2025 USD ($) Ethereum
INVESTMENT IN ETHER [Abstract]
Beginning balance (in Ethereum) | Ethereum	760		14,053.0027		11,780.2062
Beginning balance of fair value	$ 2,621,065	[1]	$ 35,136,863		$ 21,614,322	[2]
Ether purchased for the creation of Shares (in Ethereum) | Ethereum	11,400		13,665.9046		17,083.8564
Ether purchased for the creation of Shares	$ 36,336,503		$ 51,841,850		$ 59,957,569
Ether sold for the redemption of Shares (in Ethereum) | Ethereum	(380)		(5,693.894)		(6,833.2633)
Ether sold for the redemption of Shares	$ (1,022,569)		$ (22,896,308)		$ (24,680,879)
Principal on ether sales to pay expenses (in Ethereum) | Ethereum	0		(4.825)		(10.611)
Principal on ether sales to pay expenses	$ 0		$ (13,392)		$ (22,319)
Net realized gain (loss) from ether sold for the redemption of shares	(194,831)		4,651,711		2,907,325
Net change in unrealized appreciation (depreciation) on investment in ether	$ (6,777,145)		$ 22,241,151		$ 31,185,857
Ending balance (in Ethereum) | Ethereum	11,780		22,020.1883		22,020.1883
Ending balance of fair value	$ 30,963,023		$ 90,961,875	[2]	$ 90,961,875	[2]

[1] On May 21, 2024, Franklin Resources Inc. (the “Seed Capital Investor”), an affiliate of the Sponsor, subject to conditions, purchased 4,000 Shares at a per-Share price equal to $25.00 (the “Initial Seed Shares”). Delivery of the Initial Seed Shares was made on May 21, 2024. Total proceeds to the Fund from the sale of the Initial Seed Shares were $100,000. On June 27, 2024, the Initial Seed Shares were redeemed for $100,000 and the Seed Capital Investor purchased two creation units in a cash transaction comprised of a total of 100,000 Shares at a per-Share price based on 380 ether per Creation Unit (or 0.0076 ether per Share), for a total of 760 ether (the “Seed Creation Units”). The cash proceeds to the Fund from the sale of the Seed Creation Units were used by the Fund to purchase 760 ether at the price of $3,446.37 per ether on June 27, 2024 (exclusive of transaction and other costs incurred in connection with the conversion of the cash proceeds to ether, which were paid by the Seed Capital Investor). Thus, the ultimate total proceeds to the Fund from the sale of the Seed Creation Units were $2,619,241.20 (an amount representing 760 ether). Further, the transaction and other costs incurred in connection with the Seed Creation Units were paid by the Seed Capital Investor and not borne by the Fund.

[2] Cost of investment in ether: $76,013,644 at September 30, 2025 and $37,851,948 at March 31, 2025.