Consolidated Statements of Changes in Partners' Capital (Net Asset Value) (Global Class) (USD $)	Total	Global 1 Class	Global 1 Class General Partner	Global 1 Class Limited Partners	Global 2 Class	Global 2 Class General Partner	Global 2 Class Limited Partners	Global 3 Class	Global 3 Class General Partner	Global 3 Class Limited Partners
Partners' capital, (net asset value) at Dec. 31, 2011				$ 12,255,712			$ 26,494,677			$ 228,570,428
Partners' capital, (net asset value) at Dec. 31, 2011	798,842,191
Partners' capital, (net asset value) at Dec. 31, 2011			1,200,376			1,710,523			411,298
Partners' capital, (net asset value) (in units) at Dec. 31, 2011				14,017.11			30,586.54			277,864.25
Partners' capital, (net asset value) (in units) at Dec. 31, 2011			1,372.89			1,974.70			500.00
Net asset value per unit at beginning of period (in dollars per unit) at Dec. 31, 2011		$ 874.34	$ 874.34	$ 874.34	$ 866.22	$ 866.22	$ 866.22	$ 822.60	$ 822.60	$ 822.60
Increase (Decrease) in Partners' Capital
Contributions	21,950,721			647,355			2,072,339			18,601,219
Contributions (in units)				728.52			2,365.96			22,416.69
Redemptions	(97,210,099)			(3,443,817)			(2,988,950)		(406,616)	(17,846,660)
Redemptions (in units)				(3,887.81)			(3,392.95)		(500.00)	(21,528.12)
Net income (loss)	(2,392,867)		12,873	135,986		15,965	266,011		(4,682)	184,487
Partners' capital, (net asset value) at Jun. 30, 2012				9,595,236			25,844,077			229,509,474
Partners' capital, (net asset value) at Jun. 30, 2012	721,189,946
Partners' capital, (net asset value) at Jun. 30, 2012			1,213,249			1,726,488
Partners' capital, (net asset value) (in units) at Jun. 30, 2012				10,857.82			29,559.55			278,752.82
Partners' capital, (net asset value) (in units) at Jun. 30, 2012			1,372.89			1,974.70
Net asset value per unit at end of period (in dollars per unit) at Jun. 30, 2012		$ 883.72	$ 883.72	$ 883.72	$ 874.31	$ 874.31	$ 874.31	$ 823.34	$ 823.34	$ 823.34
Partners' capital, (net asset value) at Dec. 31, 2012		10,526,414		10,526,414	23,335,702		23,335,702	218,778,280		218,778,280
Partners' capital, (net asset value) at Dec. 31, 2012	636,740,050
Partners' capital, (net asset value) at Dec. 31, 2012		1,160,812	1,160,812		1,649,835	1,649,835
Partners' capital, (net asset value) (in units) at Dec. 31, 2012		12,449.60		12,449.60	27,930.65		27,930.65	280,522.12		280,522.12
Partners' capital, (net asset value) (in units) at Dec. 31, 2012		1,372.89	1,372.89		1,974.70	1,974.70
Net asset value per unit at beginning of period (in dollars per unit) at Dec. 31, 2012		$ 845.52	$ 845.52	$ 845.52	$ 835.49	$ 835.49	$ 835.49	$ 779.90	$ 779.90	$ 779.90
Increase (Decrease) in Partners' Capital
Contributions	18,974,662			864,871			1,845,847			15,837,880
Contributions (in units)				1,018.42			2,207.89			20,350.70
Redemptions	(82,191,402)			(1,013,188)			(4,066,162)			(26,974,356)
Redemptions (in units)				(1,196.43)			(4,908.10)			(34,995.74)
Net income (loss)	(29,673,926)		(43,480)	(390,839)		(63,748)	(850,174)			(10,022,365)
Partners' capital, (net asset value) at Jun. 30, 2013		9,987,258		9,987,258	20,265,213		20,265,213	197,619,439		197,619,439
Partners' capital, (net asset value) at Jun. 30, 2013	543,849,384
Partners' capital, (net asset value) at Jun. 30, 2013		$ 1,117,332	$ 1,117,332		$ 1,586,087	$ 1,586,087
Partners' capital, (net asset value) (in units) at Jun. 30, 2013		12,271.59		12,271.59	25,230.44		25,230.44	265,877.08		265,877.08
Partners' capital, (net asset value) (in units) at Jun. 30, 2013		1,372.89	1,372.89		1,974.70	1,974.70
Net asset value per unit at end of period (in dollars per unit) at Jun. 30, 2013		$ 813.85	$ 813.85	$ 813.85	$ 803.21	$ 803.21	$ 803.21	$ 743.27	$ 743.27	$ 743.27