Summary of Significant Accounting Policies (Details) (USD $)	1 Months Ended	4 Months Ended	8 Months Ended	11 Months Ended	12 Months Ended			12 Months Ended				12 Months Ended					12 Months Ended					12 Months Ended					12 Months Ended
	Jan. 31, 2012 Class	Apr. 30, 2011	Dec. 31, 2011	Dec. 31, 2012 Class	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 ERISA/IRA Investors [Member]	Dec. 31, 2013 Capital Unit, Class A [Member]	Dec. 31, 2012 Capital Unit, Class A [Member]	Dec. 31, 2011 Capital Unit, Class A [Member]	Dec. 31, 2013 Capital Unit, Class A [Member] Maximum [Member]	Dec. 31, 2013 Capital Unit, Class B [Member]	Dec. 31, 2012 Capital Unit, Class B [Member]	Dec. 31, 2011 Capital Unit, Class B [Member]	Dec. 31, 2013 Capital Unit, Class B [Member] Minimum [Member]	Dec. 31, 2013 Capital Unit, Class B [Member] Maximum [Member]	Dec. 31, 2013 Capital Unit Class C [Member]	Dec. 31, 2012 Capital Unit Class C [Member]	Dec. 31, 2011 Capital Unit Class C [Member]	Dec. 31, 2013 Capital Unit Class C [Member] Minimum [Member]	Dec. 31, 2013 Capital Unit Class C [Member] Maximum [Member]	Dec. 31, 2013 Capital Unit Class D [Member]	Dec. 31, 2012 Capital Unit Class D [Member]	Dec. 31, 2011 Capital Unit Class D [Member]	Mar. 01, 2009 Capital Unit Class D [Member]	Dec. 31, 2013 Capital Unit Class D [Member] Minimum [Member]	Dec. 31, 2013 Capital Unit Class Z [Member]	Dec. 31, 2012 Capital Unit Class Z [Member]	Dec. 31, 2011 Capital Unit Class Z [Member]
Schedule of Equity Method Investments [Line Items]
Partnership payments to Ceres for general partner administrative fee, rate by investment, monthly basis (in hundredths)					0.0833%
Partnership payments to Ceres for general partner administrative fee, rate by investment, annual basis (in hundredths)					1.00%
Applicable rate payable by each limited partner to placement agent [Abstract]
Aggregate Investment											$ 4,999,999				$ 250,000	$ 499,999				$ 500,000	$ 4,999,999					$ 5,000,000
Aggregate Investment																											All
Placement agent fee rate, monthly basis (in hundredths)								0.167%				0.125%					0.083%					0.063%					0.00%
Placement agent fee rate, annual basis (in hundredths)								2.00%				1.50%					1.00%					0.75%
Partnership payments to Ceres for general partner administrative fee, rate by investment, annual basis (in hundredths)		0.40%	0.25%
Partnership payments to Ceres for general partner administrative fee, rate by investment, monthly basis (in hundredths)		0.03%	0.021%
Partnership payments to Ceres for general partner administrative fee, rate by Trading Company net assets, monthly basis (in hundredths)		0.029%
Partnership payments to Ceres for general partner administrative fee, rate by Trading Company net assets, annual basis (in hundredths)		0.35%
Number of share classes	4			2
Initial offer price per capital units (in dollars per unit)	$ 1,000																								$ 1,300
Minimum partnership subscription amount					25,000		10,000
Incremental additional subscriptions					10,000
Limited partners unit that can be redeemed (in hundredths)					100.00%
Minimum investment to be maintained by investors (in units)					3
Period to pay all redemptions					10 days
Units outstanding by share class [Roll Forward]
Units, period start (in units)								100,367.279	117,989.188	93,726.780		18,803.813	25,377.597	19,502.516			21,629.171	32,198.395	39,260.116			8,745.602	8,745.602	3,072.942			4,127.999	4,242.591	3,651.080
Subscriptions (in units)								2,719.276	12,028.805	36,732.134		143.686	701.229	11,333.448			0	831.469	3,779.565			0	128.458	5,672.660			163.298	498.826	766.961
Redemptions (in units)								(38,321.384)	(29,650.714)	(12,469.726)		(6,294.497)	(7,275.013)	(5,458.367)			(10,134.864)	(11,400.693)	(10,841.286)			(3,650.000)	(128.458)	0			(1,477.674)	(613.418)	(175.450)
Units, period end (in units)								64,765.171	100,367.279	117,989.188		12,653.002	18,803.813	25,377.597			11,494.307	21,629.171	32,198.395			5,095.602	8,745.602	8,745.602			2,813.623	4,127.999	4,242.591
Notice period to terminate partnership					60 days
Provision for income tax					0	0
Uncertain tax positions requiring recognition				$ 0	$ 0	$ 0