Statements of Assets and Liabilities (Unaudited) - USD ($) |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Assets [Abstract] | ||||||||
| Cash | $ 28,524 | $ 458,981 | ||||||
| Short-term investments, at fair value | [1] | 935,248,208 | 1,040,452,950 | |||||
| Short-term investments held at the broker (restricted), at fair value | [2] | 82,201,836 | 52,782,806 | |||||
| Receivable for variation margin on open futures contracts (Note 9) | 10,586,199 | 0 | ||||||
| Total Assets | 1,028,064,767 | 1,093,694,737 | ||||||
| Liabilities | ||||||||
| Sponsor’s fee payable | 656,426 | 687,144 | ||||||
| Payable for variation margin on open futures contracts (Note 9) | 0 | 11,332,892 | ||||||
| Total Liabilities | 656,426 | 12,020,036 | ||||||
| Commitments and contingent liabilities (Note 7) | ||||||||
| Net Assets | $ 1,027,408,341 | $ 1,081,674,701 | ||||||
| Shares issued and outstanding (in shares) | [3] | 28,900,000 | 46,850,000 | |||||
| Net asset value per Share (Note 2G) (in dollars per share) | $ 35.55 | $ 23.09 | ||||||
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- Definition Amount payable to other broker-dealer and clearing organization, including, but not limited to, security failed-to-receive, deposit received for security loaned, open transaction, and floor-brokerage payable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value portion of liabilities incurred for goods and services received that are used in an entity's business and related party payables. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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| X | ||||||||||
- Definition Fair value portion of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of securities on deposit with clearing organizations and other entities which provide services necessary to operations of the Company. This item would include, for instance, securities advanced as refundable collateral for securities borrowed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value of asset after deduction of liability. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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| X | ||||||||||
- Definition Fair value of financial and nonfinancial obligations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount receivable from broker-dealers and clearing organizations, including, but not limited to, securities failed-to-deliver, certain deposits for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage receivables. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount to be paid per share that is classified as temporary equity by entity upon redemption. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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