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Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
US Treasury Bill Securities [Member]    
Investments in Securities, cost $ 0 $ 392,834,605 [1]
Affiliated Investments [Member]    
Affiliated Investments, at Cost $ 1,002,112,590 $ 876,300,343
[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.