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Condensed Schedule of Investments (Parenthetical) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Collateral amount on open OTC commodity swap contracts $ 36,210,000 $ 40,660,000
Collateral amount on open commodity futures contracts $ 239,751,800 $ 210,148,873
Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares, 5.27%    
Investment interest rate   5.27%
Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio - Institutional Shares    
Interest rate 5.22%