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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partners [Member]
Net income (loss) $ 462,453,889    
Net asset value, beginning of period at Dec. 31, 2015 $ 11.02    
Net asset value, end of period at Jun. 30, 2016 $ 11.56    
Beginning Balance at Dec. 31, 2016 $ 3,101,956,669 $ 0 $ 3,101,956,669
Addition of 272,800,000 partnership shares 2,739,803,719 0 2,739,803,719
Redemption of 203,000,000 partnership shares (2,160,862,362) 0 (2,160,862,362)
Net income (loss) (511,928,455) 0 (511,928,455)
Ending Balance at Jun. 30, 2017 $ 3,168,969,571 $ 0 $ 3,168,969,571
Net asset value, beginning of period at Dec. 31, 2016 $ 11.71    
Net asset value, end of period at Jun. 30, 2017 $ 9.47