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Condensed Schedule of Investments (Unaudited)
 6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
contract
Dec. 31, 2023
USD ($)
contract
Notional Amount [1]   $ 223,865,330
Number of Contracts 22,886  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts $ (82,464,760) 40,072,461
Fair Value/Open Commodity Swap Contracts [1]   238,768,541
Unrealized Gain (Loss) on Commodity Swap Contracts [1],[2]   $ 14,903,211
Societe Generale    
Notional Amount [3] 116,907,988  
Fair Value/Open Commodity Swap Contracts [3] 116,906,723  
Unrealized Gain (Loss) on Commodity Swap Contracts [3],[4] $ (1,265)  
MACQUARIE MQCP362H 12122023 Index | Macquarie Bank Ltd.    
Payment frequency [5]   Monthly
Expiration Date [5]   Jan. 12, 2024
Notional Amount [5]   $ 129,306,126
Number of Contracts [5]   0.25
Fair Value/Open Commodity Swap Contracts [5]   $ 144,210,360
Unrealized Gain (Loss) on Commodity Swap Contracts [2],[5]   $ 14,904,234
MACQUARIE MQCP362H 12122023 Index | Societe Generale    
Payment frequency [5]   Monthly
Expiration Date [5]   Mar. 29, 2024
Notional Amount [5]   $ 94,559,204
Number of Contracts [5]   0.40
Fair Value/Open Commodity Swap Contracts [5]   $ 94,558,181
Unrealized Gain (Loss) on Commodity Swap Contracts [2],[5]   (1,023)
SOC GEN SGIXCNG1 03282024 Index | Societe Generale    
Payment frequency [5] monthly  
Expiration Date [5] Sep. 27, 2024  
Notional Amount [5] $ 116,907,988  
Number of Contracts [5] 0.40  
Fair Value/Open Commodity Swap Contracts [5] $ 116,906,723  
Unrealized Gain (Loss) on Commodity Swap Contracts [4],[5] (1,265)  
Open Commodity Futures Contracts - Long | United States | Nymex Natural Gas Future NG August 2024 Contracts, Expiring July 2024    
Notional Amount [6] $ 677,729,620  
Number of Contracts | contract [6] 22,886  
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts [6] $ (82,464,760)  
% of Partners' Capital [6] (11.58%)  
Open Commodity Futures Contracts - Long | United States | NYMEX Natural Gas Futures NG February 2024 contracts, expiring January 2024    
Notional Amount [7]   $ 695,222,259
Number of Contracts | contract [7]   29,248
Fair Value/ Unrealized Gain (Loss) on Open Commodity Contracts [7]   $ 40,072,461
% of Partners' Capital [7]   4.11%
Cash Equivalents | United States | Money Market Funds    
Market Value $ 70,950,000 $ 70,950,000
% of Partners' Capital 9.96% 7.29%
Cash Equivalents | United States | Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 5.22%    
Shares/Principal Amount [8] $ 70,950,000  
Market Value [8] $ 70,950,000  
% of Partners' Capital [8] 9.96%  
Cash Equivalents | United States | Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 5.27%    
Shares/Principal Amount [9]   $ 70,950,000
Market Value [9]   $ 70,950,000
% of Partners' Capital [9]   7.29%
[1] Collateral amounted to $40,660,000 on open OTC commodity swap contracts.
[2] Reflects the value at reset date of December 29, 2023.
[3] Collateral amounted to $18,790,000 on open OTC commodity swap contracts.
[4] Reflects the value at reset date of June 30, 2024.
[5] Custom index comprised of a basket of underlying instruments.
[6] Collateral amounted to $197,809,908 on open commodity futures contracts.
[7] Collateral amounted to $210,148,873 on open commodity futures contracts.
[8] Reflects the 7-day yield at June 30, 2024.
[9] Reflects the 7-day yield at December 31, 2023.