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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partners [Member]
Net income (loss) $ (178,972,992)    
Net asset value, beginning of year at Dec. 31, 2015 $ 11.02    
Net asset value, end of year at Mar. 31, 2016 $ 9.74    
Beginning Balance at Dec. 31, 2016 $ 3,101,956,669 $ 0 $ 3,101,956,669
Addition of 101,500,000 partnership shares 1,084,753,021 0 1,084,753,021
Redemption of 84,000,000 partnership shares (932,989,696) 0 (932,989,696)
Net income (loss) (253,155,304) 0 (253,155,304)
Ending Balance at Mar. 31, 2017 $ 3,000,564,690 $ 0 $ 3,000,564,690
Net asset value, beginning of year at Dec. 31, 2016 $ 11.71    
Net asset value, end of year at Mar. 31, 2017 $ 10.62