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Condensed Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($)
Sep. 30, 2021
Sep. 30, 2020
Components of Cash and Cash Equivalents:    
Cash and cash equivalents $ 1,769,454,915 $ 2,123,627,473
Equity in Trading Accounts:    
Cash and cash equivalents 636,570,835 1,863,442,283
Total Cash, Cash Equivalents and Equity in Trading Accounts $ 2,406,025,750 $ 3,987,069,756