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Condensed Statement of Changes in Partners' Capital - USD ($)
General Partners [Member]
Limited Partners [Member]
Total
Balances at Dec. 31, 2018   $ 248,014,523  
Addition of partnership shares,respectively   533,947,245  
Redemption of partnership shares,respectively   (499,942,062)  
Net income (loss)   (25,187,996) $ (25,187,996)
Balances at Sep. 30, 2019 $ 0 256,831,710  
Balances at Jun. 30, 2019   324,941,153  
Addition of partnership shares,respectively   87,413,405  
Redemption of partnership shares,respectively   (171,619,885)  
Net income (loss)   16,097,037 16,097,037
Balances at Sep. 30, 2019 0 256,831,710  
Balances at Dec. 31, 2019   444,573,254 444,573,254
Addition of partnership shares,respectively   598,855,602  
Redemption of partnership shares,respectively   (574,654,099)  
Net income (loss)   (152,251,627) (152,251,627)
Balances at Sep. 30, 2020 0 316,523,130 316,523,130
Balances at Jun. 30, 2020   383,377,266  
Addition of partnership shares,respectively   93,213,810  
Redemption of partnership shares,respectively   (213,421,967)  
Net income (loss)   53,354,021 53,354,021
Balances at Sep. 30, 2020 $ 0 $ 316,523,130 $ 316,523,130