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Condensed Schedule of Investments (Unaudited)	Jun. 30, 2021 USD ($) contract
Market Value	$ 220,847,000
% of Partners' Capital	69.14%
Goldman Sachs Financial Square Government Fund - Institutional Shares [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]
Shares/Principal Amount	$ 2,201,000
Market Value	$ 2,201,000
% of Partners' Capital	0.69%
Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]
Shares/Principal Amount	$ 200,000,000
Market Value	$ 200,000,000
% of Partners' Capital	62.61%
RBC U.S. Government Money Market Fund - Institutional Shares [Member] | United States - Money Market Funds [Member] | Cash Equivalents [Member]
Shares/Principal Amount	$ 18,646,000
Market Value	$ 18,646,000
% of Partners' Capital	5.84%
ICE Brent Crude Oil Futures CO September 2021 contracts, expiring July 2021 [Member] | United Kingdom Contracts [Member] | Open Commodity Futures Contracts - Long [Member]
Shares/Principal Amount	$ 313,238,570
Number of Contracts | contract	4,281
Fair Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 6,209,650
% of Partners' Capital	1.94%

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