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Condensed Schedule of Investments	Mar. 31, 2019 USD ($)
Cash Equivalents [Member]
Market Value	$ 92,434,914
% of Partners' Capital	98.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member]
Market Value	$ 59,634,914
% of Partners' Capital	63.33%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.37%, 4/04/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,999,414
% of Partners' Capital	3.19%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.41%, 4/11/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,998,012
% of Partners' Capital	3.18%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.42%, 4/18/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,996,607
% of Partners' Capital	3.18%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.43%, 4/25/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,995,200
% of Partners' Capital	3.18%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.46%, 5/02/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,995,824
% of Partners' Capital	2.12%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 5/09/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,994,859
% of Partners' Capital	2.12%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 5/16/2019
Principal Amount	$ 1,000,000
Market Value	$ 996,937
% of Partners' Capital	1.06%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.50%, 5/23/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,992,879
% of Partners' Capital	2.12%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.49%, 5/30/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,991,945
% of Partners' Capital	2.12%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.51%, 6/06/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,990,925
% of Partners' Capital	2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.51%, 6/13/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,984,913
% of Partners' Capital	3.17%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.49%, 6/20/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,989,067
% of Partners' Capital	2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.49%, 6/27/2019
Principal Amount	$ 1,000,000
Market Value	$ 994,055
% of Partners' Capital	1.06%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 7/05/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,987,149
% of Partners' Capital	2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 7/11/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,979,358
% of Partners' Capital	3.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 7/18/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,985,360
% of Partners' Capital	2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 7/25/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,976,617
% of Partners' Capital	3.16%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 8/01/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,983,394
% of Partners' Capital	2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.46%, 8/08/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,982,585
% of Partners' Capital	2.11%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 8/15/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,981,564
% of Partners' Capital	2.10%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.47%, 8/22/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,970,983
% of Partners' Capital	3.15%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 8/29/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,969,375
% of Partners' Capital	3.15%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 9/05/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,978,631
% of Partners' Capital	2.10%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.48%, 9/12/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,977,723
% of Partners' Capital	2.10%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.46%, 9/19/2019
Principal Amount	$ 2,000,000
Market Value	$ 1,976,915
% of Partners' Capital	2.10%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.41%, 9/26/2019
Principal Amount	$ 3,000,000
Market Value	$ 2,964,623
% of Partners' Capital	3.15%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member]
Market Value	$ 32,800,000
% of Partners' Capital	34.84%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member]
Principal Amount	$ 2,000,000
Market Value	$ 2,000,000
% of Partners' Capital	2.13%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Principal Amount	$ 13,000,000
Market Value	$ 13,000,000
% of Partners' Capital	13.81%
Cash Equivalents [Member] | United States [Member] | United States - Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Funds - Government Portfolio [Member]
Principal Amount	$ 17,800,000
Market Value	$ 17,800,000
% of Partners' Capital	18.90%
Open Futures Contracts - Long [Member] | Foreign Contracts [Member] | ICE Brent Crude Oil Futures CO June 2019 contracts expiring April 2019 [Member]
Principal Amount	$ 94,087,170	[1]
Number of Contracts	1,393	[1]
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 51,770	[1]
% of Partners' Capital	0.05%	[1]
[1] Collateral amounted to $10,220,823 on open futures contracts.

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