75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Statements of Financial Condition link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Statements of Financial Condition (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - Schedule of Investments link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - Statements of Income and Expenses link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - Statements of Changes in Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Concentration Risk link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Service Providers and Related Party Agreements link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Organization and Offering Costs link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Additional Valuation Information link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Investments in Ether link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Share Purchases and Redemptions link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Financial Highlights link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Investments in Ether (Tables) link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Financial Highlights (Tables) link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Organization - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Service Providers and Related Party Agreements - Additional Information) (Details) link:presentationLink link:calculationLink link:definitionLink 995615 - Disclosure - Investments in Ether - Summary of Transactions and Earnings from Investments in Ether (Details) link:presentationLink link:calculationLink link:definitionLink 995625 - Disclosure - Financial Highlights - Summary of Financial Highlights of NAV per Share (Details) link:presentationLink link:calculationLink link:definitionLink Entity Incorporation, State or Country Code Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, before Tax Net Realized and Net Change in Unrealized Gain (Loss) on Investments in Ether Entity Current Reporting Status Expenses Operating Expenses [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Proceeds from Disposition of Investment, Operating Activity Proceeds from Ether sold to pay Sponsor Fee Summary of Financial Highlights of NAV per Share Investment Company, Financial Highlights [Table Text Block] Crypto-Asset [Domain] Investment Transactions Investment, Policy [Policy Text Block] Document Fiscal Period Focus Entity Shell Company Segment Reporting, Policy [Policy Text Block] Segment Reporting Net Assets Net Assets Investments in Ether Sold for Redemptions Realized Investment Gain Loss on Redemptions Realized investment gain loss on redemptions. Statement [Table] Net Increase (Decrease) due to Share Transactions Net Increase (Decrease) due to Share Transactions Stockholders Equity Period Increase Decrease Due To Share Transactions Stockholders equity period increase (decrease) due to share transactions. Investment Company, Investment Income (Loss) from Operations, Per Share Net income (loss) Statement [Line Items] Entity Filer Category Initial Seed Shares Initial Seed Shares [Member] Initial Seed Shares. Creation Baskets Creation Baskets [Member] Creation Baskets Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Paid-in-capital Additional Paid in Capital, Common Stock Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Concentration Risk Concentration Risk Disclosure [Text Block] Investment Company, Total Return Total Return, at net asset value Total Return, at net asset value Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Net Realized Gain (Loss) on Investments in Bitcoin Realized Gain (Loss), Investment and Derivative, Operating, after Tax Net Realized Gain (Loss) on Investments in Ether Sold for Sponsor Fee and Redemptions Entity Small Business Distributable earnings (loss) Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit) Organization, Consolidation and Presentation of Financial Statements [Abstract] Limited Liability Company or Limited Partnership, Business, Formation State Limited liability company formation state Amendment Flag Entity Address, Postal Zip Code Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Rule 10b5-1 Arr Modified [Flag] Rule 10b5-1 Arrangement Modified Flag. Rule 10b5-1 Arrangement Modified Number of shares issued per Creation Basket Number of shares issued per Creation Basket Number of shares issued per Creation Basket Entity Address, Address Line One Earnings Per Share [Abstract] Federal Income Taxes Income Tax, Policy [Policy Text Block] Investment Type [Axis] Organization. Organization [Line Items] Organization [Line Items] Gain (Loss) on Sale of Investments, Total Gain (Loss) on Sale of Investments Net Realized Gain (Loss) on Investments in Ether Sold to pay Sponsor Fee Document Type Net Change in Shareholder's Equity (in shares) Stock Issued During Period, Shares, Period Increase (Decrease) Net Change in Shareholders' Equity (in shares) Entity Central Index Key Organization and Offering Costs Organization and Offering Costs [Text Block] Organization and Offering Costs Net change in cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Liabilities [Abstract] Liabilities Net Realized (Gain) Loss On Investments In Ether Sold To For Redemptions Net realized (Gain) Loss on investments in ether sold to for redemptions. Net Realized Gain (Loss) on Investments in Ether Sold for Redemptions Net Realized (Gain) Loss on Investments in Ether Sold for Redemptions cash equivalents held by Trust. Cash Equivalents Held by Trust Cash equivalents held by trust Investments valuation. Investment Valuations [Policy Text Block] Investment Valuations Realized Investment Gains (Losses) Net Realized Gain (Loss) from Investments in Ether Sold to Pay Sponsor Fee Net Realized (Gain) Loss from Investments in Ether Sold to pay Sponsor Fee Net Realized Gain (Loss) Current Fiscal Year End Date Document Quarterly Report Number of Cyptocurrency Quantity Number of Cyptocurrency. Entity Address, State or Province Investment Company, Investment Income (Loss) Ratio Net Investment income (loss) Risks and Uncertainties [Abstract] Crypto-Asset, Other [Member] Other Assets Less Liabilities Routine Operational, Administrative and Other Ordinary Expenses Routine Operational Administrative And Other Ordinary Expenses Policy Policy [Text Block] Routine operational administrative and other ordinary expenses. Sponsor Fees Sponsor Fee Investment Company, Gain (Loss) on Investment, Per Share Net realized and change in unrealized gain (loss) on investments in Ether Unrealized Gain (Loss) on Investments Net Change in Unrealized Gain (Loss) from Investments in Ether Net Change in Unrealized (Gain) Loss on Investments in Ether Net Change in Unrealized Gain (Loss) on Investments in Ether Bitcoins Bitcoins [Member] Bitcoins Related Party Transactions [Abstract] Investments in Ether Sold to Pay Sponsor Fee Realized Investment Gain Loss on Sponsor Fee Realized investment gain loss on sponsor fee. Net Realized (Gain) Loss on Investments in Ether Sold to pay Sponsor Fee Commitments and Contingencies Commitments and Contingencies (Note 9) Market value per share Investment Company, Market Value, Per Share Interest and Dividend Income, Operating, Total Interest and Dividend Income, Operating Total Income Management fee percentage per annum of daily NAV Management Fee Per Annum Of Daily Net Assets Management fee per annum of daily net assets. Sponsor fee per annum on daily net assets Service Providers and Related Party Agreements Related Party Transactions Disclosure [Text Block] Beginning Balance (in shares) Ending Balance (in shares) Partners' Capital Account, Units Beginning Balance Ending Balance Equity, Attributable to Parent Net Assets Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Statement of Stockholders' Equity [Abstract] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Investment Holdings [Text Block] Investments in Ether Entity Address, Address Line Two Additional Valuation Information Fair Value Disclosures [Text Block] Fair Value Investment Owned, Fair Value, Total Opening Balance Ending Balance Investment Owned, Fair Value Investments in Ether, at value (cost $19,374,816 and $22,471,959, respectively) Crypto Assets Crypto Assets [Policy Text Block] Crypto assets Schedule of Investments [Line Items] Investments owned, additions. Investments Owned Additions Purchases at Cost Non-Recurring Fees and Expenses Non Recurring And Unusual Fees And Expenses Policy [Text Block] Non recurring and unusual fees and expenses. Entity Address, City or Town Increase decrease accrued sponsor's fees. Increase Decrease Accrued Sponsor's Fees Accrued Sponsor Fee Security exchange name Security Exchange Name Cost Investment Owned, Cost Investment in Ether Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total Cash at beginning of period Cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash equivalents Document Period End Date Redemption of Shares Redemption value Redemption of Shares Stock Redeemed or Called During Period, Value Organization and Offering Costs [Abstract] Organization and Offering Costs Statement of Financial Position [Abstract] Share Purchases and Redemptions [Abstract] Share Purchases and Redemptions Class of Stock [Axis] Shares outstanding Limited Partners' Capital Account, Units Outstanding Total Liabilities Total Liabilities Liabilities Total Liabilities Entity File Number Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax Net Change in Unrealized Gain (Loss) on Investments in Ether Cover [Abstract] Minimum number of creation baskets of shares that can be purchased. Minimum Number Of Creation Baskets Of Shares That Can Be Purchased Minimum number of Creation Baskets that can be purchased Investments [Domain] Number of Operating Segments Number of operating segments Market value per share Market value per Share, beginning of period Market value per Share, end of period Market Value Per Share Market value per share. Schedule of Investments [Table] Cost of ether purchased Payment for Purchase, Investment, Operating Activity Cost of Ether purchased Non-Rule 10b5-1 Arr Modified [Flag] Non-Rule 10b5-1 Arr modified flag. Non-Rule 10b5-1 Arrangement Modified Document Transition Report Total Expenses Operating Expenses Redemption of Shares Redemption of Shares Payments for Repurchase of Common Stock Schedule of Investments [Abstract] Statement of Cash Flows [Abstract] Investment Company Realized and Net Change in Unrealized Gain (Loss) [Abstract] Investment company realized and net change in unrealized gain (loss). Net Realized and Net Change in Unrealized Gain (Loss) Stock issued Purchases of Shares Stock Issued During Period, Value, New Issues Return at market value. Total Return, at market value Return At Market Value Total Return, at market value Net Income (Loss) Partner Type of Partners' Capital Account, Name [Domain] Assets Assets [Abstract] Partner Type [Axis] Document Fiscal Year Focus Crypto-Asset [Axis] Proceeds From Ether Sold For Redemptions Proceeds From Ether Sold For Redemptions. Proceeds from Ether sold for Redemptions Proceeds from Ether sold for Redemptions Trust Expenses Trust Expenses [Policy Text Block] Trust Expenses. Fair Value Disclosures [Abstract] Commitments and Contingencies Disclosure [Abstract] % of Net Assets Investment Owned, Net Assets, Percentage Title of 12(b) Security Investment Income, Net, Total Investment Income, Net Net Investment Income (Loss) Ethereum. Ethereum [Member] Ethereum Redemption of Shares (in shares) Stock Redeemed or Called During Period, Shares Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Change in operating assets and liabilities: Accrued Professional Fees Accrued Sponsor Fee Trading Symbol Net Assets. Net Assets [Member] Net Assets Organization [Table] Organization [Table] Organization. Investment Company, Financial Highlights [Abstract] Net Asset Value Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Entity Ex Transition Period Equity Components [Axis] Equity Component [Domain] Financial Highlights Investment Company, Financial Highlights [Text Block] Net investment income (loss) Investment Company, Investment Income (Loss), Per Share, Basic Net Increase (Decrease) due to Share Transactions (in shares) Net Increase (Decrease) due to Share Transactions (in shares) Stock Issued During Period Shares Period Increase Decrease Due To Share Transactions Stock issued during period shares period increase decrease due to share transactions. Investment Company, Financial Ratios [Abstract] Ratio to average Net Assets Entity Registrant Name Share Purchases and Redemptions Share Purchases And Redemptions Disclosure [Text Block] Share purchases and redemptions disclosure. Proceeds from purchases of Shares Proceeds from Issuance of Common Stock Entity Common Stock, Shares Outstanding Net Change in Shareholder's Equity Stockholders' Equity, Period Increase (Decrease) Net Change in Shareholders' Equity Shares [Member] Limited Partner [Member] Net Asset Value Per Share Net asset value per share Net asset value per Share, beginning of period Net asset value per Share, end of period Investment Company, Expense Ratio, after Voluntary Fee Waiver Deduction Expenses Total Assets Assets Payments for (Proceeds from) Investments, Total Payments for (Proceeds from) Investments Proceeds from Sales to Pay Sponsor Fee Income Statement [Abstract] Shares issued (in shares) Purchases of Shares (in shares) Stock Issued During Period, Shares, New Issues City Area Code Limited Liability Company or Limited Partnership, Business, Formation Date Limited liability company formation date Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Net Investment Income (Loss) Operating Income (Loss) Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Summary Investment Holdings [Table Text Block] Summary of Transactions and Earnings from Investments in Ether Entity Interactive Data Current Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Entity Tax Identification Number Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Net assets consist of: Revenues [Abstract] Income Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Marketable Security, Unrealized Gain (Loss) Change in Unrealized Appreciation (Depreciation) Local Phone Number Accounting Policies [Abstract] Class of Stock [Domain] Entity Emerging Growth Company