Fair Value of Ether - Changes in Quantity of ETH and Respective Fair Value (Parenthetical) (Details) $ in Millions	Jul. 23, 2024 USD ($) Ethereum
Fair Value Disclosures [Abstract]
Initial Distribution of Ether \| Ethereum	292,262.9891335
Value of Ether distributed by the trust \| $	$ 1,010.9

Investment owned balance contracts initial distribution.

No definition available.

Name:	eth_InvestmentOwnedBalanceContractsInitialDistribution
Namespace Prefix:	eth_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant