Fair Value of Ether - Additional Information (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) Ether $ / shares		Jul. 21, 2024 USD ($) Ether
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Trust held net closing balance of ether | Ether	121,101.8582		0
Investment in ether, at fair value	$ 404,529,000	[1]	$ 0
CME CF Ether
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investment in ether, at fair value	$ 405,188,652
Ether index price per share | $ / shares	$ 3,345.85
Lukka Prime Rate
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Investment in ether, at fair value	$ 404,528,647
Ether index price per share | $ / shares	$ 3,340.4

[1] No comparative period presented as the Trust commenced operations on July 22, 2024.