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Condensed Schedule of Investments (Unaudited)	Sep. 30, 2020 USD ($) contract
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 37,172,030
Open Futures Contracts, Long | United States Contracts
Notional Amount	$ 175,168,220
Number of Contracts | contract	5,086
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 37,172,030
% of Partners' Capital	17.51%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures CL November 2020 contracts, expiring October 2020
Notional Amount	$ 11,915,360
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 5,137,920
% of Partners' Capital	2.42%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures CL December 2020 contracts, expiring November 2020
Notional Amount	$ 12,271,180
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,888,100
% of Partners' Capital	2.30%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures CL January 2021 contracts, expiring December 2020
Notional Amount	$ 12,586,490
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,708,470
% of Partners' Capital	2.22%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures CL February 2021 contracts, expiring January 2021
Notional Amount	$ 12,850,930
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,588,190
% of Partners' Capital	2.16%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures CL March 2021 contracts, expiring February 2021
Notional Amount	$ 13,064,350
Number of Contracts | contract	423
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,477,460
% of Partners' Capital	2.11%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures CL April 2021 contracts, expiring March 2021
Notional Amount	$ 13,296,480
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,418,240
% of Partners' Capital	2.08%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures May 2021 contracts, expiring April 2021
Notional Amount	$ 13,479,180
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,345,780
% of Partners' Capital	2.05%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures June 2021 contracts, expiring May 2021
Notional Amount	$ 14,459,530
Number of Contracts | contract	423
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 3,424,910
% of Partners' Capital	1.61%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures July 2021 contracts, expiring June 2021
Notional Amount	$ 17,015,120
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 992,160
% of Partners' Capital	0.47%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures August 2021 contracts, expiring July 2021
Notional Amount	$ 17,778,320
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 301,040
% of Partners' Capital	0.14%
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures September 2021 contracts, expiring August 2021
Notional Amount	$ 18,965,520
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ (822,560)
% of Partners' Capital	(0.39%)
Open Futures Contracts, Long | United States Contracts | NYMEX WTI Crude Oil Futures October 2021 contracts, expiring September 2021
Notional Amount	$ 17,485,760
Number of Contracts | contract	424
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts	$ 712,320
% of Partners' Capital	0.34%
Cash Equivalents | United States - Money Market Funds
Market Value	$ 20,196,000
% of Partners' Capital	9.51%
Cash Equivalents | United States - Money Market Funds | Fidelity Investments Money Market Funds - Government Portfolio [Member]
Shares/Principal Amount	$ 200,000	[1]
Market Value	$ 200,000	[1]
% of Partners' Capital	0.09%	[1]
Cash Equivalents | United States - Money Market Funds | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Shares/Principal Amount	$ 9,996,000	[1]
Market Value	$ 9,996,000	[1]
% of Partners' Capital	4.71%	[1]
Cash Equivalents | United States - Money Market Funds | RBC U.S. Government Money Market Fund - Institutional Share Class [Member]
Shares/Principal Amount	$ 10,000,000	[1]
Market Value	$ 10,000,000	[1]
% of Partners' Capital	4.71%	[1]
[1] Reflects the 7-day yield at September 30, 2020.

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