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Statements of Changes in Partners' Capital - USD ($) | Total | General Partner [Member] | Limited Partners [Member]
--- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 | $ 574,277,054 | $ 0 | $ 574,277,054
Addition of partnership shares | 5,187,835,835 | 0 | 5,187,835,835
Redemption of partnership shares | (3,995,159,782) | 0 | (3,995,159,782)
Net income (loss) | (489,273,234) | 0 | (489,273,234)
Ending Balance at Dec. 31, 2014 | $ 1,277,679,873 | 0 | 1,277,679,873
Net asset value, beginning of year at Dec. 31, 2013 | $ 35.23 |  |
Net asset value, end of year at Dec. 31, 2014 | $ 20.15 |  |
Addition of partnership shares | $ 9,173,312,546 | 0 | 9,173,312,546
Redemption of partnership shares | (6,040,509,746) | 0 | (6,040,509,746)
Net income (loss) | (1,288,412,920) | 0 | (1,288,412,920)
Ending Balance at Dec. 31, 2015 | $ 3,122,069,753 | 0 | 3,122,069,753
Net asset value, end of year at Dec. 31, 2015 | $ 11.02 |  |
Addition of partnership shares | $ 4,450,820,824 | 0 | 4,450,820,824
Redemption of partnership shares | (5,137,486,718) | 0 | (5,137,486,718)
Net income (loss) | 666,552,810 | 0 | 666,552,810
Ending Balance at Dec. 31, 2016 | $ 3,101,956,669 | $ 0 | $ 3,101,956,669
Net asset value, end of year at Dec. 31, 2016 | $ 11.71 |  |

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