Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net Income (Loss)	$ 175,130,026	$ (379,124,915)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Cost of securities purchased	(623,851,381)	(344,150,134)
Proceeds from securities sold and matured	160,000,000	506,996,264
Cost of affiliated investments purchased	(966,097,731)	(317,285,890)
Proceeds from affiliated investments sold	878,918,579	801,752,087
Net accretion of discount on United States Treasury Obligations	(109,719)	(2,643,581)
Net realized (gain) loss on United States Treasury Obligations and Affiliated Investments		(149,132)
Net change in unrealized (gain) loss on United States Treasury Obligations, Affiliated Investments and LME Commodity Futures Contracts	(11,188,978)	20,622,152
Change in operating assets and liabilities:
Dividends from affiliates	(11,603)	269,642
Variation margin - Commodity Futures Contracts	4,380,599	(2,435,086)
LME Commodity Futures Contracts	(4,628,898)	521,101
Management fees	523,421	(323,508)
Brokerage commissions and fees	2,571	686
Net cash provided by (used in) operating activities	(386,933,114)	284,049,686
Cash flows from financing activities:
Proceeds from purchases of Shares	510,665,514	38,133,321
Redemption of Shares	(131,273,880)	(310,734,938)
Net cash provided by (used in) financing activities	379,391,634	(272,601,617)
Net change in cash	(7,541,480)	11,448,069
Cash at beginning of period	7,541,480
Cash at end of period		11,448,069
Supplemental disclosure of cash flow information
Cash paid for interest	$ 4,067	$ 22,212