Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($)		Sep. 30, 2022		Dec. 31, 2021
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity		141.77%		88.21%
United States Treasury Obligations, Value		$ 191,355,788		$ 112,005,375
Affiliated investments, Value		225,041,490		317,739,851
Investments in Securities, Value		416,397,278		429,745,226
Investments in Securities, cost		$ 416,673,065		$ 429,717,441
Affiliated Investments [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity		76.62%		65.22%
Affiliated investments, Value		$ 225,041,490		$ 317,739,851
Affiliated Investments,Cost		$ 225,099,604		$ 317,713,448
U.S. Treasury Bills, 2.470% due October 20, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	6.80%
United States Treasury Obligations, Value	[1],[2]	$ 19,976,412
United States Treasury Obligations, Principal Value	[1],[2]	$ 20,000,000
Investment Interest Rate	[1],[2]	2.47%
Investment Maturity Date	[1],[2]	Oct. 20, 2022
Restricted for maintenance margin		$ 191,342,200
U.S. Treasury Bills, 2.520% due October 27, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	11.90%
United States Treasury Obligations, Value	[1],[2]	$ 34,940,150
United States Treasury Obligations, Principal Value	[1],[2]	$ 35,000,000
Investment Interest Rate	[1],[2]	2.52%
Investment Maturity Date	[1],[2]	Oct. 27, 2022
U.S. Treasury Bills, 2.610% due November 17, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	18.66%
United States Treasury Obligations, Value	[1],[2]	$ 54,806,263
United States Treasury Obligations, Principal Value	[1],[2]	$ 55,000,000
Investment Interest Rate	[1],[2]	2.61%
Investment Maturity Date	[1],[2]	Nov. 17, 2022
U.S. Treasury Bills, 2.740% due November 25, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	16.95%
United States Treasury Obligations, Value	[1],[2]	$ 49,793,092
United States Treasury Obligations, Principal Value	[1],[2]	$ 50,000,000
Investment Interest Rate	[1]	2.74%
Investment Maturity Date	[1]	Nov. 25, 2022
U.S. Treasury Bills, 2.880% due December 1, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	6.78%
United States Treasury Obligations, Value	[1],[2]	$ 19,905,354
United States Treasury Obligations, Principal Value	[1],[2]	$ 20,000,000
Investment Interest Rate	[1],[2]	2.88%
Investment Maturity Date	[1],[2]	Dec. 01, 2022
U.S. Treasury Bills, 2.965% due December 8, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	4.06%
United States Treasury Obligations, Value	[1],[2]	$ 11,934,517
United States Treasury Obligations, Principal Value	[1],[2]	$ 12,000,000
Investment Interest Rate	[1],[2]	2.965%
Investment Maturity Date	[1],[2]	Dec. 08, 2022
Exchange-Traded Fund [Member] | Affiliated Investments [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[3]	6.81%		7.40%
Affiliated investments, Value	[3]	$ 20,001,124		$ 36,070,938
Affiliated Investments, Shares	[3]	189,800		341,500
Affiliated Investments,Cost	[3]	$ 20,059,238		$ 36,044,535
Money Market Funds [Member] | Affiliated Investments [Member] | Invesco Government and Agency Portfolio Institutional Class [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[3]	69.81%	[4]	57.82%	[5]
Affiliated investments, Value	[3]	$ 205,040,366	[4]	$ 281,668,913	[5]
Affiliated Investments, Shares	[3]	205,040,366	[4]	281,668,913	[5]
Investment Interest Rate	[3]	2.88%	[4]	0.03%	[5]
Affiliated Investments,Cost	[3]	$ 205,040,366	[4]	$ 281,668,913	[5]
United States Treasury Obligations [Member]
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]	65.15%		22.99%
United States Treasury Obligations, Value	[1]	$ 191,355,788		$ 112,005,375
Investments in Securities, cost	[1]	$ 191,573,461		$ 112,003,993
U.S. Treasury Bills, 0.040% due January 6, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]			5.13%
United States Treasury Obligations, Value	[1]			$ 25,000,002
United States Treasury Obligations, Principal Value	[1]			$ 25,000,000
Investment Interest Rate	[1]			0.04%
Investment Maturity Date	[1]			Jan. 06, 2022
U.S. Treasury Bills, 0.055% due January 20, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1]			5.13%
United States Treasury Obligations, Value	[1]			$ 24,999,911
United States Treasury Obligations, Principal Value	[1]			$ 25,000,000
Investment Interest Rate	[1]			0.055%
Investment Maturity Date	[1]			Jan. 20, 2022
U.S. Treasury Bills, 0.055% due January 27, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[6]			5.13%
United States Treasury Obligations, Value	[1],[6]			$ 24,999,625
United States Treasury Obligations, Principal Value	[1],[6]			$ 25,000,000
Investment Interest Rate	[1],[6]			0.055%
Investment Maturity Date	[1],[6]			Jan. 27, 2022
Restricted for maintenance margin				$ 31,996,800
U.S. Treasury Bills, 0.050% due February 3, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[6]			5.14%
United States Treasury Obligations, Value	[1],[6]			$ 25,006,662
United States Treasury Obligations, Principal Value	[1],[6]			$ 25,007,200
Investment Interest Rate	[1],[6]			0.05%
Investment Maturity Date	[1],[6]			Feb. 03, 2022
U.S. Treasury Bills, 0.070% due March 10, 2022
Schedule Of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[6]			2.46%
United States Treasury Obligations, Value	[1],[6]			$ 11,999,175
United States Treasury Obligations, Principal Value	[1],[6]			$ 12,000,000
Investment Interest Rate	[1],[6]			0.07%
Investment Maturity Date	[1],[6]			Mar. 10, 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 $191,342,200 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 September 30, 2022.

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

[6] United States Treasury Obligations of $31,996,800 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.