Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Investments in Securities, cost	$ 1,702,160,618	$ 1,691,344,447
US Treasury Bill Securities [Member]
Investments in Securities, cost	693,785,719	783,578,544
Affiliated Investments [Member]
Affiliated Investments, at Cost	$ 1,008,374,899	$ 907,765,903