Schedule of Investments - Treasury Bills and Money Market Fund - USD ($)		Dec. 31, 2023		Dec. 31, 2022
Schedule Of Investments [Line Items]
Investments in Securities, cost		$ 69,341,449		$ 98,874,569
Percentage of Shareholders' Equity		99.93%		99.01%
United States Treasury Obligations, Value		$ 29,517,982		$ 30,797,944
Total Investments in Securities		$ 65,364,155		$ 98,885,228
U.S. Treasury Bill, 5.250% due March 7, 2024 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[1]	5.25%
Investment Maturity Date	[1]	Mar. 07, 2024
Percentage of Shareholders' Equity	[1]	7.57%
United States Treasury Obligations, Value	[1]	$ 4,953,044
United States Treasury Obligations, Principal Value	[1]	$ 5,000,000
U.S. Treasury Bill, 5.245% due April 4, 2024 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[1]	5.245%
Investment Maturity Date	[1]	Apr. 04, 2024
Percentage of Shareholders' Equity	[1]	15.08%
United States Treasury Obligations, Value	[1]	$ 9,865,796
United States Treasury Obligations, Principal Value	[1]	$ 10,000,000
U.S. Treasury Bill, 5.270% due May 16, 2024 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[1],[2]	5.27%
Investment Maturity Date	[1],[2]	May 16, 2024
Restricted for maintenance margin		$ 4,904,000
Percentage of Shareholders' Equity	[1],[2]	15.00%
United States Treasury Obligations, Value	[1],[2]	$ 9,808,450
United States Treasury Obligations, Principal Value	[1],[2]	$ 10,000,000
U.S. Treasury Bill, 5.190% due June 6, 2024 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[1]	5.19%
Investment Maturity Date	[1]	Jun. 06, 2024
Percentage of Shareholders' Equity	[1]	7.48%
United States Treasury Obligations, Value	[1]	$ 4,890,692
United States Treasury Obligations, Principal Value	[1]	$ 5,000,000
Money Market Mutual Fund - Invesco Government and Agency Portfolio - Institutional Class [Member] | Affiliated Investments [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate		4.22%	[3],[4]	4.22%	[5],[6]
Investments in Securities, cost		$ 35,846,173	[3],[4]	$ 68,087,284	[5],[6]
Percentage of Shareholders' Equity		54.80%	[3],[4]	68.17%	[5],[6]
Affiliated Investments, at value		$ 35,846,173	[3],[4]	$ 68,087,284	[5],[6]
Shares		35,846,173	[3],[4]	68,087,284	[5],[6]
U.S. Treasury Bills, 4.155% due February 16, 2023 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[7]			4.155%
Investment Maturity Date	[7]			Feb. 16, 2023
Percentage of Shareholders' Equity	[7]			9.96%
United States Treasury Obligations, Value	[7]			$ 9,950,332
United States Treasury Obligations, Principal Value	[7]			$ 10,000,000
U.S. Treasury Bills, 4.285% due March 2, 2023 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[7],[8]			4.285%
Investment Maturity Date	[7],[8]			Mar. 02, 2023
Restricted for maintenance margin				$ 4,965,500
Percentage of Shareholders' Equity	[7],[8]			9.94%
United States Treasury Obligations, Value	[7],[8]			$ 9,931,788
United States Treasury Obligations, Principal Value	[7],[8]			$ 10,000,000
U.S. Treasury Bills, 4.270% due March 9, 2023 [Member]
Schedule Of Investments [Line Items]
Investment Interest Rate	[7]			4.27%
Investment Maturity Date	[7]			Mar. 09, 2023
Percentage of Shareholders' Equity	[7]			10.93%
United States Treasury Obligations, Value	[7]			$ 10,915,824
United States Treasury Obligations, Principal Value	[7]			11,000,000
United States Treasury Obligations [Member]
Schedule Of Investments [Line Items]
Investments in Securities, cost		$ 29,495,276	[1]	$ 30,787,285	[7]
Percentage of Shareholders' Equity		45.13%	[1]	30.84%	[7]
United States Treasury Obligations, Value		$ 29,517,982	[1]	$ 30,797,944	[7]

[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.

[2] United States Treasury Obligations of $4,904,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.

[3] 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.

[4] The rate shown is the 7-day SEC standardized yield as of December 31, 2023.

[5] 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.

[6] The rate shown is the 7-day SEC standardized yield as of December 31, 2022.

[7] 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.

[8] United States Treasury Obligations of $4,965,500 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.