Financial Highlights (Details) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
RATIOS TO AVERAGE NET ASSETS FOR TRADING COMPANIES [Abstract]
Interest Income (in hundredths)	0.00%	[1]
Trading Company Administrative Fees (in hundredths)	(0.35%)
Management Fees (in hundredths)	(1.60%)
Incentive Fees (in hundredths)	(0.01%)
Class A [Member]
NET ASSET VALUE [Roll Forward]
BEGINNING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 959.86		$ 1,068.75		$ 1,044.60
NET OPERATING RESULTS [Abstract]
Net investment loss (in dollars per unit)	$ (32.19)		$ (34.74)		$ (34.71)
Net realized/unrealized loss (in dollars per unit)	$ (34.63)		$ (74.15)		$ 58.86
Net income (loss) (in dollars per unit)	$ (66.82)	[2]	$ (108.89)	[2]	$ 24.15	[2]
ENDING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 893.04		$ 959.86		$ 1,068.75
RATIOS TO AVERAGE NET ASSETS [Abstract]
Net investment loss (in hundredths)	(3.40%)		(3.40%)		(3.40%)
Partnership expenses (in hundredths)	3.40%	[3]	3.40%	[3]	3.40%	[3]
TOTAL RETURN (in hundredths)	(6.96%)		(10.19%)		2.31%
Class B [Member]
NET ASSET VALUE [Roll Forward]
BEGINNING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 981.31		$ 1,087.13		$ 1,057.28
NET OPERATING RESULTS [Abstract]
Net investment loss (in dollars per unit)	$ (28.15)		$ (30.23)		$ (30.03)
Net realized/unrealized loss (in dollars per unit)	$ (35.56)		$ (75.59)		$ 59.88
Net income (loss) (in dollars per unit)	$ (63.71)	[2]	$ (105.82)	[2]	$ 29.85	[2]
ENDING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 917.60		$ 981.31		$ 1,087.13
RATIOS TO AVERAGE NET ASSETS [Abstract]
Net investment loss (in hundredths)	(2.90%)		(2.90%)		(2.90%)
Partnership expenses (in hundredths)	2.90%	[3]	2.90%	[3]	2.90%	[3]
TOTAL RETURN (in hundredths)	(6.49%)		(9.73%)		2.82%
Class C [Member]
NET ASSET VALUE [Roll Forward]
BEGINNING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 1,003.23		$ 1,105.83		$ 1,070.11
NET OPERATING RESULTS [Abstract]
Net investment loss (in dollars per unit)	$ (23.82)		$ (25.62)		$ (25.21)
Net realized/unrealized loss (in dollars per unit)	$ (36.58)		$ (76.98)		$ 60.93
Net income (loss) (in dollars per unit)	$ (60.4)	[2]	$ (102.6)	[2]	$ 35.72	[2]
ENDING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 942.83		$ 1,003.23		$ 1,105.83
RATIOS TO AVERAGE NET ASSETS [Abstract]
Net investment loss (in hundredths)	(2.40%)		(2.40%)		(2.40%)
Partnership expenses (in hundredths)	2.40%	[3]	2.40%	[3]	2.40%	[3]
TOTAL RETURN (in hundredths)	(6.02%)		(9.28%)		3.34%
Class D [Member]
NET ASSET VALUE [Roll Forward]
BEGINNING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 1,014.52		$ 1,115.12		$ 1,076.41
NET OPERATING RESULTS [Abstract]
Net investment loss (in dollars per unit)	$ (21.73)		$ (23.3)		$ (22.71)
Net realized/unrealized loss (in dollars per unit)	$ (36.51)		$ (77.3)		$ 61.42
Net income (loss) (in dollars per unit)	$ (58.24)	[2]	$ (100.6)	[2]	$ 38.71	[2]
ENDING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 956.28		$ 1,014.52		$ 1,115.12
RATIOS TO AVERAGE NET ASSETS [Abstract]
Net investment loss (in hundredths)	(2.15%)		(2.15%)		(2.15%)
Partnership expenses (in hundredths)	2.15%	[3]	2.15%	[3]	2.15%	[3]
TOTAL RETURN (in hundredths)	(5.74%)		(9.02%)		3.60%
Class Z [Member]
NET ASSET VALUE [Roll Forward]
BEGINNING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 1,048.53		$ 1,144.17		$ 1,096.22
NET OPERATING RESULTS [Abstract]
Net investment loss (in dollars per unit)	$ (14.65)		$ (15.43)		$ (15.14)
Net realized/unrealized loss (in dollars per unit)	$ (38.52)		$ (80.21)		$ 63.09
Net income (loss) (in dollars per unit)	$ (53.17)	[2]	$ (95.64)	[2]	$ 47.95	[2]
ENDING BALANCE, NET ASSET VALUE (in dollars per unit)	$ 995.36		$ 1,048.53		$ 1,144.17
RATIOS TO AVERAGE NET ASSETS [Abstract]
Net investment loss (in hundredths)	(1.40%)		(1.40%)		(1.40%)
Partnership expenses (in hundredths)	1.40%	[3]	1.40%	[3]	1.40%	[3]
TOTAL RETURN (in hundredths)	(5.07%)		(8.36%)		4.37%

[1] Amounts less than 0.005%

[2] Based on the changes in Net Asset Value per Unit.

[3] Does not include the expenses of the Trading Companies in which the Partnership invests.