Schedule of Investments - Treasury Bills and Money Market Fund - USD ($)		Dec. 31, 2022		Dec. 31, 2021
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity		100.47%		100.14%
United States Treasury Obligations, Value		$ 15,921,316		$ 7,999,099
Affiliated Investments, Value		21,895,656		19,363,957
Investments in Securities, Value		37,816,972		27,363,056
Investments in Securities, Cost		$ 37,811,624		$ 27,363,082
U.S. Treasury Bill, 3.820% due January 19, 2023
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]	15.91%
United States Treasury Obligations, Value	[1]	$ 5,990,360
United States Treasury Obligations, Principal Value	[1]	$ 6,000,000
Investment Interest Rate	[1]	3.82%
Investment Maturity Date	[1]	Jan. 19, 2023
U.S. Treasury Bill, 4.285% due March 2, 2023
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	23.75%
United States Treasury Obligations, Value	[1],[2]	$ 8,938,608
United States Treasury Obligations, Principal Value	[1],[2]	$ 9,000,000
Investment Interest Rate	[1],[2]	4.285%
Restricted for maintenance margin		$ 4,965,500
Investment Maturity Date	[1],[2]	Mar. 02, 2023
U.S. Treasury Bill, 4.270% due March 9, 2023
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]	2.64%
United States Treasury Obligations, Value	[1]	$ 992,348
United States Treasury Obligations, Principal Value	[1]	$ 1,000,000
Investment Interest Rate	[1]	4.27%
Investment Maturity Date	[1]	Mar. 09, 2023
United States Treasury Obligations [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]	42.30%		29.28%
United States Treasury Obligations, Value	[1]	$ 15,921,316		$ 7,999,099
Investments in Securities, Cost	[1]	$ 15,915,968		$ 7,999,125
Money Market Mutual Fund [Member] | Invesco Government & Agency Portfolio, Institutional Class [Member] | Affiliated Investments [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[3]	58.17%	[4]	70.86%	[5]
Affiliated Investments, Value	[3]	$ 21,895,656	[4]	$ 19,363,957	[5]
Affiliated Investments, Shares	[3]	21,895,656	[4]	19,363,957	[5]
Affiliated Investments, at Cost	[3]	$ 21,895,656	[4]	$ 19,363,957	[5]
Investment Interest Rate	[3]	4.22%	[4]	0.03%	[5]
U.S. Treasury Bills, 0.040% due January 6, 2022 [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]			3.66%
United States Treasury Obligations, Value	[1]			$ 1,000,000
United States Treasury Obligations, Principal Value	[1]			$ 1,000,000
Investment Interest Rate	[1]			0.04%
Restricted for maintenance margin				$ 1,999,600
Investment Maturity Date	[1]			Jan. 06, 2022
U.S. Treasury Bills, 0.055% due January 20, 2022 [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[6]			7.32%
United States Treasury Obligations, Value	[1],[6]			$ 1,999,993
United States Treasury Obligations, Principal Value	[1],[6]			$ 2,000,000
Investment Interest Rate	[1],[6]			0.055%
Investment Maturity Date	[1],[6]			Jan. 20, 2022
U.S. Treasury Bills, 0.070% due March 10, 2022 [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[6]			3.66%
United States Treasury Obligations, Value	[1],[6]			$ 999,931
United States Treasury Obligations, Principal Value	[1],[6]			$ 1,000,000
Investment Interest Rate	[1],[6]			0.07%
Investment Maturity Date	[1],[6]			Mar. 10, 2022
U.S. Treasury Bills, 0.060% due April 21, 2022 [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]			14.64%
United States Treasury Obligations, Value	[1]			$ 3,999,175
United States Treasury Obligations, Principal Value	[1]			$ 4,000,000
Investment Interest Rate	[1]			0.06%
Investment Maturity Date	[1]			Apr. 21, 2022

[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 $4,965,500 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, 2022.

[5] The rate shown is the 7-day SEC standardized yield as of December 31, 2021.

[6] United States Treasury Obligations of $1,999,600 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.