Significant Accounting Policies (Policies)	1 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and are stated in United States (“US”) dollars. The Trust qualifies as an investment company for accounting purposes pursuant to the accounting and reporting guidance under Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 946, Financial Services – Investment Companies. The Trust uses fair value as its method of accounting for ether in accordance with its classification as an investment company for accounting purposes. The Trust is not a registered investment company under the Investment Company Act of 1940. In the opinion of the Trust, the accompanying unaudited financial statements contain all adjustments, consisting of only normal recurring adjustments, necessary for the fair presentation of financial statements for the period presented.
Use of Estimates	Use of Estimates The preparation of the financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. Actual amounts may ultimately differ from those estimates and the differences could be material.
Ethereum Assets	Ethereum Assets Ether is an Ethereum-based token, which is a type of digital asset based on an open‐source cryptographic protocol existing on an Ethereum network. The Ethereum network supports ether and other Ethereum-based tokens. Digital assets are defined broadly as digital records that are made using cryptography for verification and security purposes, on a distributed ledger and may be characterized by their ability to be used as a medium of exchange, a representation to provide or access goods or services, or as a financing vehicle, such as a security. The Trust identifies ether as an “other investment” in accordance with ASC Topic 946.
Investment Valuation	Investment Valuation Due to the Trust’s classification as an investment company, investments in ether are recorded on the financial statements at their estimated fair value in accordance with ASC Topic 820 Fair Value Measurement (“ASC 820”). ASC 820 requires the determination of the Trust’s principal market or, in the absence of a principal market, the most advantageous market (principal market) and the assumption that ether is sold in their principal market. The Trust determines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants using the principal market on the measurement date and, therefore, the principal market used must be accessible to the Trust on that date. The Trust determines its principal market price for GAAP reporting and utilizes an exchange-traded price from that principal market as of 11:59:59 p.m., EST, on the financial statement measurement date. GAAP establishes the following fair value hierarchy that prioritizes inputs to valuation techniques used to measure fair value. The inputs are categorized in one of the following levels: Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities that the Trust is able to access at the measurement date. Level 2 – Inputs, other than quoted prices included in Level 1, that are observable either directly or indirectly. These inputs may include (a) quoted prices for similar assets or liabilities in active markets, (b) quoted prices for identical or similar assets or liabilities in markets that are not active, (c) inputs other than quoted prices that are observable for the asset or liability, or (d) inputs derived principally from or corroborated by observable market data by correlation or other means. Level 3 – Inputs that are unobservable (including the Trust’s own data and assumptions based on the best information available) and significant to the entire fair value measurement. To the extent that investments are actively traded and valuation adjustments are not applied, they are categorized in Level 1 of the fair value hierarchy. Investments traded on inactive markets or valued by reference to similar instruments are generally categorized in Level 2 of the fair value hierarchy. The availability of valuation techniques and observable inputs can vary across investment and is affected by various factors, including the nature of the investment, whether the investment is new or unestablished in the marketplace, market liquidity and other investment specific characteristics. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, determining fair value requires more judgment. Because of the uncertainty inherent in valuation, those estimated values may be materially higher or lower than the values that would have been used had a ready market for the investments existed. Therefore, the degree of judgment exercised by management in determining fair value is greatest for investments categorized in Level 3. In some circumstances, the inputs used to measure fair value might be categorized within different levels of the fair value hierarchy. In those instances, the fair value measurement is categorized in its entirety in the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.
Investment Transactions and Related Investment Income	Investment Transactions and Related Investment Income The Trust records investment transactions in ether on a trade date basis. For financial reporting purposes, the Trust’s investment holdings and Paid-In-Capital include trades executed through the end of the last business day of the period. The Trust’s purchases are recorded at cost, including transaction fees, and are subsequently fair valued in accordance with the Trust’s fair valuation policy. Changes in fair value are reflected as the net change in unrealized appreciation (depreciation) on investments in ether. Realized gains and losses from investment transactions are determined on the basis of identified cost and reflected as net realized gain (loss) on investments in ether.
Cash	Cash Cash consists of a demand deposit held with a financial institution. At times, deposits may be in excess of federally insured limits. The Trust has not experienced any losses and does not believe it is exposed to any significant credit risk on such deposits.
Income Taxes	Income Taxes The Trust intends to be classified as a “grantor trust” for US federal income tax purposes. As a result, the Trust itself should not be subject to US federal income tax. Instead, the Trust’s income and expenses should “flow through” to the Shareholders, and the Trustee will report to Shareholders and the Internal Revenue Service on that basis. The Sponsor evaluates tax positions taken or expected to be taken in the course of its tax treatment, and its tax reporting to its shareholders, of these positions to determine whether the tax positions are “more-likely-than-not” to be sustained by the applicable tax authority. Tax positions not deemed to meet that threshold would be recorded as an expense in the current year. The Trust is required to analyze all open tax years. Open tax years are those years that are open for examination by the relevant income taxing authority. There were no examinations in progress at period end.
Expenses	Expenses Expenses are recorded as accrued. Expense estimates are accrued in the period to which they relate. Expenses included in the accompanying financial statements reflect the expenses of the Trust and do not include any expenses paid by the Sponsor or related entities outside of the Trust.
New Accounting Pronouncement	New Accounting Pronouncement In December 2023, the FASB issued Accounting Standards Update (“ASU”) No. 2023-08, “Intangibles-Goodwill and Other-Crypto Assets (Subtopic 350-60): Accounting for and Disclosure of Crypto Assets” (“ASU 2023-08”). ASU 2023-08 requires entities to subsequently measure certain crypto assets at fair value, and changes in fair value must be recorded in net income in each reporting period. In addition, entities are required to provide additional disclosures about the holdings of certain crypto assets. ASU 2023-08 is effective for annual and interim reporting periods beginning after December 15, 2024. Early adoption is permitted for both interim and annual financial statements that have not yet been issued or made available for issuance. The Trust is currently evaluating the impact the adoption of this new accounting standard update will have on its financial statements and related disclosures but does not expect it will have a material impact on the Trust’s financial statements as the requirements of ASU 2023-08 generally align with the accounting requirements under ASC Topic 946.

Fidelity Ethereum Fund 10-Q