Statements of Financial Condition (Parenthetical) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Investments in Securities, cost	$ 1,030,473,392	$ 635,517,149
US Treasury Bill Securities [Member]
Investments in Securities, cost	203,006,323	209,922,016
Affiliated Investments [Member]
Affiliated Investments, at Cost	$ 827,467,069	$ 425,595,133