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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partners [Member]
Net income (loss) $ 36,596,494    
Net asset value, beginning of period at Dec. 31, 2015 $ 8.69    
Net asset value, end of period at Jun. 30, 2016 $ 8.65    
Balances at Dec. 31, 2016 $ 537,810,802 $ 0 $ 537,810,802
Addition of partnership shares 922,309,024 0 922,309,024
Redemption of partnership shares (872,544,599) 0 (872,544,599)
Net income (loss) (140,098,159) 0 (140,098,159)
Balances at Jun. 30, 2017 $ 447,477,068 $ 0 $ 447,477,068
Net asset value, beginning of period at Dec. 31, 2016 $ 9.29    
Net asset value, end of period at Jun. 30, 2017 $ 6.78