Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Investments in Securities, cost	$ 2,440,604,371	$ 1,290,438,251
US Treasury Bill Securities [Member]
Investments in Securities, cost	1,041,933,997	399,839,681
Affiliated Investments [Member]
Affiliated Investments, at Cost	$ 1,398,670,374	$ 890,598,570