Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Investments in Securities, Cost	$ 956,655,628	$ 229,340,530
Affiliated Investments [Member]
Affiliated Investments, at Cost	844,801,306	105,742,951
US Treasury Bill Securities [Member]
Investments in Securities, Cost	$ 111,854,322	$ 123,597,579