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Condensed Schedule of Investments	Jun. 30, 2019 USD ($)
Cash Equivalents [Member]
Market Value	$ 88,673,174
% of Partners' Capital	96.56%
Cash Equivalents [Member] | United States Treasury Obligations [Member]
Market Value	$ 58,673,174
% of Partners' Capital	63.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 7/05/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,999,459
% of Partners' Capital	2.18%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 7/11/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,997,956
% of Partners' Capital	3.26%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 7/18/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,997,696
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 7/25/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,995,120
% of Partners' Capital	3.26%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 8/01/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,995,781
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.46%, 8/08/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,994,870
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 8/15/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,993,900
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 8/22/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,989,448
% of Partners' Capital	3.25%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 8/29/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,987,954
% of Partners' Capital	3.25%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 9/05/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,991,017
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 9/12/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,990,084
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.46%, 9/19/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,989,200
% of Partners' Capital	2.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.41%, 9/26/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,982,709
% of Partners' Capital	3.25%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.40%, 10/03/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,981,396
% of Partners' Capital	3.25%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.41%, 10/10/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,979,926
% of Partners' Capital	3.24%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.42%, 10/17/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,978,490
% of Partners' Capital	3.24%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.40%, 10/24/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,977,287
% of Partners' Capital	3.24%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.37%, 10/31/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,984,140
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.40%, 11/07/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,982,979
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.38%, 11/14/2019
Principal Amount	$ 1,000,000
Market Value	$ 991,103
% of Partners' Capital	1.08%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.37%, 11/21/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,981,410
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.33%, 11/29/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,980,664
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.20%, 12/05/2019
Principal Amount	$ 1,000,000
Market Value	$ 990,493
% of Partners' Capital	1.08%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.16%, 12/12/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,980,502
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.15%, 12/19/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,979,813
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.07%, 12/26/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,979,777
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member]
Market Value	$ 30,000,000
% of Partners' Capital	32.67%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Fidelity Investments Money Market Funds Government Portfolio [Member]
Principal Amount	$ 5,000,000
Market Value	$ 5,000,000
% of Partners' Capital	5.45%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Principal Amount	$ 15,000,000
Market Value	$ 15,000,000
% of Partners' Capital	16.33%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Funds Government Portfolio [Member]
Principal Amount	$ 10,000,000
Market Value	$ 10,000,000
% of Partners' Capital	10.89%
Open Futures Contracts -Long [Member] | Foreign Contracts [Member] | ICE Brent Crude Oil Futures CO September 2019 contracts expiring July 2019 [Member]
Principal Amount	$ 86,273,950	[1]
Number of Contracts	1,418	[1]
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 5,527,370	[1]
% of Partners' Capital	6.02%	[1]
[1] Collateral amounted to $8,976,787 on open futures contracts.

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