COMBINED FINANCIAL HIGHLIGHTS - Schedule of Financial Highlights (Details)				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 shares	Dec. 31, 2024 USD ($) Ethereum $ / shares shares	Dec. 31, 2024 USD ($) Ethereum $ / shares shares	Dec. 31, 2025 USD ($) Ethereum $ / shares shares	Dec. 31, 2024 Ethereum $ / shares		Sep. 30, 2025 Ethereum	Mar. 31, 2025 Ethereum	Sep. 30, 2024 Ethereum	Jul. 22, 2024 Ethereum
COMBINED FINANCIAL HIGHLIGHTS [Abstract]
Net asset value per Share, beginning of period (in Dollars per share)				$ 31.35	$ 19.98		$ 13.94	$ 26.21	[1]
Stock issued during the period shares new issues | shares				450,000	250,000	1,750,000	2,700,000
Proceeds from issuance of shares | $		$ 2,619,241.2				$ 42,553,442	$ 72,528,985
Payment to redeem shares | $	[2]			$ 21,491,502	$ 3,878,497	$ 4,901,065	$ 46,172,381
Quantity of ether | Ethereum		760		19,348.465	12,540	12,540	19,348.465	12,540		22,020.1883	11,780.2062	11,780	760
Quantity of ether purchased (in Ethereum) | Ethereum		760		3,415.02	1,900	13,300	20,498.8764
Cost of Ether per unit | $ / item		3,446.37
Net investment loss (in Dollars per share)	[3]			$ (0.01)	$ 0		$ (0.04)	$ 0
Net realized and unrealized gain (loss) on investment in ether (in Dollars per share)				(8.8)	5.36		8.64	(0.87)
Net change in net assets from operations (in Dollars per share)	[4]			(8.81)	5.36		8.6	(0.87)
Net asset value per Share, end of period (in Dollars per share)				$ 22.54	$ 25.34	$ 25.34	$ 22.54	$ 25.34
Total return, at net asset value	[5],[6]			(28.10%)	26.83%		61.69%	(3.32%)
Ratio to average net assets(f)
Net investment loss	[7]			(0.19%)	0.00%		(0.19%)	0.00%
Gross expenses	[7]			0.19%	0.19%		0.19%	0.19%
Net expenses	[7]			0.19%	0.00%		0.19%	0.00%
Initial Seed Shares [Member]
COMBINED FINANCIAL HIGHLIGHTS [Abstract]
Stock issued during the period shares new issues | shares			4,000
Shares issued, price per share (in Dollars per share)			$ 25
Proceeds from issuance of shares | $			$ 100,000
Payment to redeem shares | $		$ 100,000
Seed Creation Units [Member]
COMBINED FINANCIAL HIGHLIGHTS [Abstract]
Stock issued during the period shares new issues | shares		100,000
Number of seed creation units issued | CreationUnits		2
Number of Ether per creation unit		380
Number of Ether per share		0.0076
Quantity of ether | Ethereum		760

[1] The amount shown represents the NAV per share at July 23, 2024 (commencement of the Fund's investment operations). This amount includes proceeds to the Fund from the initial ether seed creation transaction conducted on June 27, 2024. Prior to June 27, 2024, 4,000 shares were acquired on May 21, 2024 at per share value of $25.00 (the “Initial Seed Shares”). 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 Franklin Resources Inc. (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).

[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.

[3] Calculated using average Shares outstanding.

[4] The amount shown for a share outstanding may not agree with the change in the aggregate gains and losses on investment for the period because of the timing of transactions in the Fund’s shares in relation to fluctuating market values for the Fund’s underlying investment.

[5] Calculation based on the change in net asset value of a Share during the period. Total return for periods of less than a year are not annualized.

[6] Total Return at NAV is calculated assuming an initial investment made at the NAV at the beginning of the period, and redemption of Shares at NAV on the last day of the period. Total Return at NAV as shown above includes adjustments in accordance with U.S. GAAP.

[7] Annualized.