Schedule of Investments (Unaudited) - Treasury Bills and Affiliated Investments - USD ($) | Mar. 31, 2023 | Dec. 31, 2022 |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 98.01% | | 97.96% | |
United States Treasury Obligations, Value | | $ 49,600,979 | | $ 104,390,943 | |
Affiliated Investments, Value | | 43,184,606 | | 46,472,701 | |
Investments in Securities, Value | | 92,785,585 | | 150,863,644 | |
Investments in Securities, cost | | $ 92,737,340 | | $ 150,831,611 | |
Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 45.61% | | 30.17% | |
Affiliated Investments, Value | | $ 43,184,606 | | $ 46,472,701 | |
Affiliated investments, at cost | | $ 43,169,793 | | $ 46,475,976 | |
U.S. Treasury Bills, 4.750% due June 1, 2023 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1],[2] | 20.97% | | | |
United States Treasury Obligations, Value | [1],[2] | $ 19,851,435 | | | |
United States Treasury Obligations, Principal Value | [1],[2] | $ 20,000,000 | | | |
Investment Interest Rate | [1],[2] | 4.75% | | | |
Investment Maturity Date | [1],[2] | Jun. 01, 2023 | | | |
Restricted for maintenance margin | | $ 19,850,000 | | | |
U.S. Treasury Bills, 4.765% due June 8, 2023 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [1] | 31.43% | | | |
United States Treasury Obligations, Value | [1] | $ 29,749,544 | | | |
United States Treasury Obligations, Principal Value | [1] | $ 30,000,000 | | | |
Investment Interest Rate | [1] | 4.765% | | | |
Investment Maturity Date | [1] | Jun. 08, 2023 | | | |
U.S. Treasury Bills, 3.820% due January 19, 2023 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [3],[4] | | | 12.97% | |
United States Treasury Obligations, Value | [3],[4] | | | $ 19,967,867 | |
United States Treasury Obligations, Principal Value | [3],[4] | | | $ 20,000,000 | |
Investment Interest Rate | [3],[4] | | | 3.82% | |
Investment Maturity Date | [3],[4] | | | Jan. 19, 2023 | |
Restricted for maintenance margin | | | | $ 59,690,000 | |
U.S. Treasury Bills, 4.155% due February 16, 2023 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [3] | | | 9.69% | |
United States Treasury Obligations, Value | [3] | | | $ 14,925,498 | |
United States Treasury Obligations, Principal Value | [3] | | | $ 15,000,000 | |
Investment Interest Rate | [3] | | | 4.155% | |
Investment Maturity Date | [3] | | | Feb. 16, 2023 | |
U.S. Treasury Bills, 4.285% due March 2, 2023 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [3],[4] | | | 25.80% | |
United States Treasury Obligations, Value | [3],[4] | | | $ 39,727,150 | |
United States Treasury Obligations, Principal Value | [3],[4] | | | $ 40,000,000 | |
Investment Interest Rate | [3],[4] | | | 4.285% | |
Investment Maturity Date | [3],[4] | | | Mar. 02, 2023 | |
Restricted for maintenance margin | | | | $ 59,690,000 | |
U.S. Treasury Bills, 4.270% due March 9, 2023 [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | [3] | | | 19.33% | |
United States Treasury Obligations, Value | [3] | | | $ 29,770,428 | |
United States Treasury Obligations, Principal Value | [3] | | | $ 30,000,000 | |
Investment Interest Rate | [3] | | | 4.27% | |
Investment Maturity Date | [3] | | | Mar. 09, 2023 | |
United States Treasury Obligations [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 52.40% | [1] | 67.79% | [3] |
United States Treasury Obligations, Value | | $ 49,600,979 | [1] | $ 104,390,943 | [3] |
Investments in Securities, cost | | $ 49,567,547 | [1] | $ 104,355,635 | [3] |
Exchange Traded Funds [Member] | Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 10.61% | [5] | 6.51% | [6] |
Affiliated Investments, Value | | $ 10,046,456 | [5] | $ 10,028,368 | [6] |
Affiliated Investments, Shares | | 95,200 | [5] | 95,200 | [6] |
Affiliated investments, at cost | | $ 10,031,643 | [5] | $ 10,031,643 | [6] |
Invesco Government And Agency Portfolio [Member] | Affiliated Investments [Member] | | | | | |
Schedule of Investments [Line Items] | | | | | |
Percentage of Shareholders' Equity | | 35% | [5],[7] | 23.66% | [6],[8] |
Affiliated Investments, Value | | $ 33,138,150 | [5],[7] | $ 36,444,333 | [6],[8] |
Affiliated Investments, Shares | | 33,138,150 | [5],[7] | 36,444,333 | [6],[8] |
Investment Interest Rate | | 4.73% | [5],[7] | 4.22% | [6],[8] |
Affiliated investments, at cost | | $ 33,138,150 | [5],[7] | $ 36,444,333 | [6],[8] |
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[1] Security may be traded on a discount basis. The interest rate shown represents the discount rate at the most recent auction date of the security prior to period end. United States Treasury Obligations of $ 19,850,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. Security may be traded on a discount basis. The interest rate shown represents the discount rate at the most recent auction date of the security prior to period end. United States Treasury Obligations of $ 59,690,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts. Affiliated issuer. The issuer and/or the Fund is a wholly-owned subsidiary of Invesco Ltd., or is affiliated by having an investment adviser that is under common control of Invesco Ltd. See Note 8. Affiliated issuer. The issuer and/or the Fund is a wholly-owned subsidiary of Invesco Ltd., or is affiliated by having an investment adviser that is under common control of Invesco Ltd. See Note 8. The rate shown is the 7-day SEC standardized yield as of March 31, 2023 . The rate shown is the 7-day SEC standardized yield as of December 31, 2022 . | |