Condensed Schedule of Investments (Parenthetical)	9 Months Ended
Sep. 30, 2020 USD ($)
United States Commodity Index Fund
Collateral Amount	$ 3,408,539
United States Commodity Index Fund \| Cash Equivalents \| United States Treasury Obligations \| U.S. Treasury Bills, 0.10%, 12/17/2020
Expiration date	Dec. 17, 2020
Interest rate	0.10%
United States Copper Index Fund
Collateral Amount	$ 338,182
United States Copper Index Fund \| Cash Equivalents \| United States Treasury Obligations \| U.S. Treasury Bills, 0.10%, 12/17/2020
Expiration date	Dec. 17, 2020
Interest rate	0.10%
Dreyfus Institutional Preferred Government Money Market Fund - Institutional Share Class, 0.04% \| United States Commodity Index Fund \| Cash Equivalents
Interest rate	0.04%
Dreyfus Institutional Preferred Government Money Market Fund - Institutional Share Class, 0.04% \| United States Copper Index Fund \| Cash Equivalents
Interest rate	0.04%
Goldman Sachs Financial Square Funds - Government Fund - Class FS, 0.00% \| United States Commodity Index Fund \| Cash Equivalents
Interest rate	0.00%
Goldman Sachs Financial Square Funds - Government Fund - Class FS, 0.00% \| United States Copper Index Fund \| Cash Equivalents
Interest rate	0.00%
RBC U.S. Government Money Market Fund - Institutional Share Class, 0.03% \| United States Commodity Index Fund \| Cash Equivalents
Interest rate	0.03%
RBC U.S. Government Money Market Fund - Institutional Share Class, 0.03% \| United States Copper Index Fund \| Cash Equivalents
Interest rate	0.03%

Amount of assets pledged to secure a debt instrument.

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