Statements of Financial Condition (Parenthetical) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Investments in Securities, Cost	$ 589,419,229	$ 767,216,178
US Treasury Bill Securities [Member]
Investments in Securities, Cost	0	245,521,628	[1]
Affiliated Investments [Member]
Affiliated Investments, at Cost	$ 589,419,229	$ 521,694,550

[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.