Financial Highlights (Details) - Schedule of Finanacial Highlights - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Capital Unit, Class A [Member]
Per share operating performance:
Net asset value of Trading units, beginning of period (in Dollars per share)	$ 49.35	$ 58.09
Total Trading income (loss):
Trading gain (loss) (in Dollars per share)	0.79	5.63
Investment income (in Dollars per share)	0.03	0.03
Expenses (in Dollars per share)	(1.61)	(2.23)
Trading income (loss) (in Dollars per share)	(0.79)	3.43
Net asset value of Trading units, end of period (in Dollars per share)	$ 48.56	$ 61.52
Total return:
Total return before incentive fees	(1.60%)	6.46%
Less incentive fee allocations	0.00%	(0.56%)
Total return	(1.60%)	5.90%
Ratios to average net assets:
Trading income (loss)	(1.62%)	5.71%
Expenses:
Expenses, less incentive fees	(3.32%)	(3.13%)
Incentive fees	0.00%	(0.56%)
Total expenses	(3.32%)	(3.69%)
Capital Unit, Class B [Member]
Per share operating performance:
Net asset value of Trading units, beginning of period (in Dollars per share)	$ 57.94	$ 66.84
Total Trading income (loss):
Trading gain (loss) (in Dollars per share)	0.93	6.48
Investment income (in Dollars per share)	0.03	0.04
Expenses (in Dollars per share)	(1.60)	(2.22)
Trading income (loss) (in Dollars per share)	(0.64)	4.30
Net asset value of Trading units, end of period (in Dollars per share)	$ 57.30	$ 71.14
Total return:
Total return before incentive fees	(1.11%)	6.98%
Less incentive fee allocations	0.00%	(0.55%)
Total return	(1.11%)	6.43%
Ratios to average net assets:
Trading income (loss)	(2.10%)	6.13%
Expenses:
Expenses, less incentive fees	(3.17%)	(2.60%)
Incentive fees	0.00%	(0.55%)
Total expenses	(3.17%)	(3.15%)