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Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Investments in Securities, cost $ 1,411,024,278 $ 1,691,344,447
US Treasury Bill Securities [Member]    
Investments in Securities, cost 693,877,370 783,578,544
Affiliated Investments [Member]    
Affiliated Investments, at Cost $ 717,146,908 $ 907,765,903