Fair Value of Ether - Schedule of Changes in Quantity of Ether and Fair Value (Details) $ in Thousands	3 Months Ended		5 Months Ended
	Mar. 31, 2025 USD ($) Ether		Dec. 31, 2024 USD ($) Ether
Fair Value Disclosures [Abstract]
Beginning balance | Ether	121,101.8582		0
Purchases | Ether	7,173.6589		136,813.5326
Sales for the redemption of Shares | Ether	(33,142.6922)		(15,711.6744)
Ether transferred for Sponsor Fee | Ether	(24.3984)
Ending balance | Ether	95,108.4265		121,101.8582
Beginning balance	$ 404,529		$ 0
Purchases	20,853		453,518
Sales for the redemption of Shares	(101,693)		(49,804)
Ether transferred for Sponsor Fee	(60)
Net realized gain (loss) on investment in ether transferred to pay Sponsor Fee	2
Net realized gain (loss) on investment in ether sold for redemptions	(13,641)	[1]	(9,412)
Change in unrealized appreciation (depreciation) on investment in ether	(136,196)	[1],[2]	10,227
Ending balance	$ 173,794		$ 404,529

[1] No comparative financial statements have been provided as the Trust’s operations commenced on July 22, 2024.

[2] No comparative financial statements have been provided as the Trust’s operations commenced on July 22, 2024