Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($)		Mar. 31, 2022		Dec. 31, 2021
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity		99.42%		98.74%
United States Treasury Obligations, Value		$ 24,988,887		$ 31,996,668
Affiliated investments, at value (cost $109,779,876 and $79,277,598, respectively)		109,733,307		79,239,151
Investments in Securities, Value		134,722,194		111,235,819
Investments in Securities, Cost		$ 134,775,724		$ 111,275,102
Affiliated Investments [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity		80.98%		70.34%
Affiliated investments, at value (cost $109,779,876 and $79,277,598, respectively)		$ 109,733,307		$ 79,239,151
Investments in Securities, Cost		$ 109,779,876		$ 79,277,598
U.S. Treasury Bills, 0.090% due April 7, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	3.69%
United States Treasury Obligations, Value	[1],[2]	$ 4,999,883
United States Treasury Obligations, Principal Value	[1],[2]	$ 5,000,000
Investment Interest Rate	[1]	0.09%
Investment Maturity Date	[1]	Apr. 07, 2022
U.S. Treasury Bills, 0.290% due May 12, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	11.07%
United States Treasury Obligations, Value	[1],[2]	$ 14,996,668
United States Treasury Obligations, Principal Value	[1],[2]	$ 15,000,000
Investment Interest Rate	[1]	0.29%
Investment Maturity Date	[1]	May 12, 2022
U.S. Treasury Bills, 0.220% due July 7, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[2]	3.68%
United States Treasury Obligations, Value	[1],[2]	$ 4,992,336
United States Treasury Obligations, Principal Value	[1],[2]	$ 5,000,000
Investment Interest Rate	[1]	0.22%
Investment Maturity Date	[1]	Jul. 07, 2022
United States Treasury Obligations [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1]	18.44%		28.40%
United States Treasury Obligations, Value	[1]	$ 24,988,887		$ 31,996,668
Investments in Securities, Cost	[1]	24,995,848		31,997,504
Restricted for maintenance margin		$ 24,988,887	[1]	$ 26,992,800
Exchange Traded Funds [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity		8.44%	[3]	10.15%	[4]
Affiliated investments, at value (cost $109,779,876 and $79,277,598, respectively)		$ 11,431,065	[3]	$ 11,439,187	[4]
Affiliated Investments, Shares		108,300	[3]	108,300	[4]
Exchange Traded Funds [Member] | Affiliated Investments [Member]
Schedule of Investments [Line Items]
Affiliated investments, at value (cost $109,779,876 and $79,277,598, respectively)		$ 11,431,065		$ 11,439,187
Investments in Securities, Cost		$ 11,477,634	[3]	$ 11,477,634	[4]
Invesco Government & Agency Portfolio, Institutional Class [Member] | Affiliated Investments [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity		72.54%	[3],[5]	60.19%
Affiliated investments, at value (cost $109,779,876 and $79,277,598, respectively)		$ 98,302,242	[3],[5]	$ 67,799,964
Affiliated Investments, Shares		98,302,242	[3],[5]	67,799,964
Investment Interest Rate		0.25%	[3],[5]	0.03%	[4],[6]
Investments in Securities, Cost		$ 98,302,242	[3],[5]	$ 67,799,964	[4],[6]
U.S. Treasury Bills, 0.040% due January 6, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1]			4.44%
United States Treasury Obligations, Value	[1]			$ 5,000,000
United States Treasury Obligations, Principal Value	[1]			$ 5,000,000
Investment Interest Rate	[1]			0.04%
Investment Maturity Date	[1],[7]			Jan. 06, 2022
U.S. Treasury Bills, 0.050% due January 13, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[7]			3.55%
United States Treasury Obligations, Value	[1],[7]			$ 3,999,989
United States Treasury Obligations, Principal Value	[1],[7]			$ 4,000,000
Investment Interest Rate	[1],[7]			0.05%
Investment Maturity Date	[1],[7]			Jan. 13, 2022
U.S. Treasury Bills, 0.050% due February 3, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[7]			4.44%
United States Treasury Obligations, Value	[1],[7]			$ 5,001,293
United States Treasury Obligations, Principal Value	[1],[7]			$ 5,001,400
Investment Interest Rate	[1],[7]			0.05%
Investment Maturity Date	[1],[7]			Feb. 03, 2022
U.S. Treasury Bills, 0.065% due May 12, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[7]			13.31%
United States Treasury Obligations, Value	[1],[7]			$ 14,995,431
United States Treasury Obligations, Principal Value	[1],[7]			$ 15,000,000
Investment Interest Rate	[1],[7]			0.065%
Investment Maturity Date	[1],[7]			May 12, 2022
U.S. Treasury Bills, 0.055% due January 27, 2022 [Member]
Schedule of Investments [Line Items]
Percentage of Shareholders' Equity	[1],[7]			2.66%
United States Treasury Obligations, Value	[1],[7]			$ 2,999,955
United States Treasury Obligations, Principal Value	[1],[7]			$ 3,000,000
Investment Interest Rate	[1],[7]			0.055%
Investment Maturity Date	[1],[7]			Jan. 27, 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 $24,988,887 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] 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.

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

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

[7] United States Treasury Obligations of $26,992,800 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.