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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partners [Member]
Net income (loss) $ (511,928,455)    
Net asset value, beginning of period at Dec. 31, 2016 $ 11.71    
Net asset value, end of period at Jun. 30, 2017 $ 9.47    
Beginning Balance at Dec. 31, 2017 $ 2,019,531,410 $ 0 $ 2,019,531,410
Addition of 137,800,000 partnership shares 1,781,469,877 0 1,781,469,877
Redemption of 184,400,000 partnership shares (2,413,599,339) 0 (2,413,599,339)
Net income (loss) 424,125,680 0 424,125,680
Ending Balance at Jun. 30, 2018 $ 1,811,527,628 $ 0 $ 1,811,527,628
Net asset value, beginning of period at Dec. 31, 2017 $ 12.08    
Net asset value, end of period at Jun. 30, 2018 $ 15.02