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Schedule of Investments (Unaudited) - Treasury Bills and Money Market Fund - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity 100.00% 100.37%
United States Treasury Obligations, Value $ 566,383,520 $ 666,431,938
Affiliated Investments, Value 559,836,326 983,150,588
Investments in Securities, Value 1,126,219,846 1,649,582,526
Investments in Securities, Cost $ 1,125,984,107 $ 1,649,547,064
Investment, Identifier [Axis]: Affiliated Investments    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity 49.71% 59.82%
Affiliated Investments, Value $ 559,836,326 $ 983,150,588
Affiliated Investments, at Cost $ 549,897,646 $ 983,344,642
Investment, Identifier [Axis]: Affiliated Investments Exchange-Traded Fund Invesco Treasury Collateral ETF    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity 6.55% [1] 4.48% [2]
Affiliated Investments, Value $ 73,723,258 [1] $ 73,590,524 [2]
Affiliated Investments, Shares 698,600 [1] 698,600 [2]
Affiliated Investments, at Cost $ 73,784,578 [1] $ 73,784,578 [2]
Investment, Identifier [Axis]: Affiliated Investments Money Market Mutual Fund Invesco Government & Agency Portfolio, Institutional Class, 4.22%    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [2],[3]   55.34%
Affiliated Investments, Value [2],[3]   $ 909,560,064
Affiliated Investments, Shares [2],[3]   909,560,064
Investment Interest Rate [2],[3]   4.22%
Affiliated Investments, at Cost [2],[3]   $ 909,560,064
Investment, Identifier [Axis]: Affiliated Investments Money Market Mutual Fund Invesco Government & Agency Portfolio, Institutional Class, 4.73%    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [1],[4] 43.16%  
Affiliated Investments, Value [1],[4] $ 486,113,068  
Affiliated Investments, Shares [1],[4] 486,113,068  
Investment Interest Rate [1],[4] 4.73%  
Affiliated Investments, at Cost [1],[4] $ 486,113,068  
Investment, Identifier [Axis]: United States Treasury Obligations    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity 50.29% [5] 40.55% [6]
United States Treasury Obligations, Value $ 566,383,520 [5] $ 666,431,938 [6]
Investments in Securities, Cost 566,086,461 [5] 666,202,422 [6]
Restricted for maintenance margin $ 99,770,000 $ 99,830,000
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 3.820% Due January 19, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [6],[7]   9.11%
United States Treasury Obligations, Value [6],[7]   $ 149,759,000
United States Treasury Obligations, Principal Value [6],[7]   $ 150,000,000
Investment Interest Rate [6],[7]   3.82%
Investment Maturity Date [6],[7]   Jan. 19, 2023
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.155% Due February 16, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [6]   9.08%
United States Treasury Obligations, Value [6]   $ 149,254,978
United States Treasury Obligations, Principal Value [6]   $ 150,000,000
Investment Interest Rate [6]   4.155%
Investment Maturity Date [6]   Feb. 16, 2023
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.270% Due March 9, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [6]   4.23%
United States Treasury Obligations, Value [6]   $ 69,464,332
United States Treasury Obligations, Principal Value [6]   $ 70,000,000
Investment Interest Rate [6]   4.27%
Investment Maturity Date [6]   Mar. 09, 2023
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.285% Due March 2, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [6]   18.13%
United States Treasury Obligations, Value [6]   $ 297,953,628
United States Treasury Obligations, Principal Value [6]   $ 300,000,000
Investment Interest Rate [6]   4.285%
Investment Maturity Date [6]   Mar. 02, 2023
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.560% Due April 20, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [5],[8] 8.86%  
United States Treasury Obligations, Value [5],[8] $ 99,780,771  
United States Treasury Obligations, Principal Value [5],[8] $ 100,000,000  
Investment Interest Rate [5],[8] 4.56%  
Investment Maturity Date [5],[8] Apr. 20, 2023  
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.680% Due May 18, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [5] 8.83%  
United States Treasury Obligations, Value [5] $ 99,415,625  
United States Treasury Obligations, Principal Value [5] $ 100,000,000  
Investment Interest Rate [5] 4.68%  
Investment Maturity Date [5] May 18, 2023  
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.750% Due June 1, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [5] 26.44%  
United States Treasury Obligations, Value [5] $ 297,771,522  
United States Treasury Obligations, Principal Value [5] $ 300,000,000  
Investment Interest Rate [5] 4.75%  
Investment Maturity Date [5] Jun. 01, 2023  
Investment, Identifier [Axis]: United States Treasury Obligations U.S. Treasury Bills, 4.765% Due June 8, 2023    
Schedule of Investments [Line Items]    
Percentage of Shareholders' Equity [5] 6.16%  
United States Treasury Obligations, Value [5] $ 69,415,602  
United States Treasury Obligations, Principal Value [5] $ 70,000,000  
Investment Interest Rate [5] 4.765%  
Investment Maturity Date [5] Jun. 08, 2023  
[1] 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.
[2] 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.
[3] The rate shown is the 7-day SEC standardized yield as of December 31, 2022.
[4] The rate shown is the 7-day SEC standardized yield as of March 31, 2023.
[5] 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.
[6] 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.
[7] United States Treasury Obligations of $99,830,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.
[8] United States Treasury Obligations of $99,770,000 are on deposit with the Commodity Broker and held as maintenance margin for open futures contracts.