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	11,744,429			293,420			1,141,500			9,724,701
Contributions (in units)				332.65			1,306.58			11,771.49
Redemptions	(55,662,741)			(537,393)			(1,281,661)		(406,616)	(7,900,475)
Redemptions (in units)				(613.08)			(1,472.93)		(500.00)	(9,607.30)
Net income (loss)	(10,595,654)		(7,643)	(77,687)		(12,012)	(188,964)		(4,682)	(2,666,333)
Partners' capital, (net asset value) at Mar. 31, 2012				11,934,052			26,165,552			227,728,321
Partners' capital, (net asset value) at Mar. 31, 2012	744,328,225
Partners' capital, (net asset value) at Mar. 31, 2012			1,192,733			1,698,511
Partners' capital, (net asset value) (in units) at Mar. 31, 2012				13,736.68			30,420.19			280,028.44
Partners' capital, (net asset value) (in units) at Mar. 31, 2012			1,372.89			1,974.70
Net asset value per unit at end of period (in dollars per unit) at Mar. 31, 2012		$ 868.77	$ 868.77	$ 868.77	$ 860.14	$ 860.14	$ 860.14	$ 813.23	$ 813.23	$ 813.23
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	8,974,962			352,000			1,149,846			7,328,116
Contributions (in units)				416.66			1,376.61			9,379.84
Redemptions	(40,937,987)			(731,631)			(2,376,848)			(12,395,329)
Redemptions (in units)				(861.44)			(2,858.85)			(15,916.95)
Net income (loss)	(1,156,755)		5,590	52,443		6,911	81,165			(52,947)
Partners' capital, (net asset value) at Mar. 31, 2013		10,199,226		10,199,226	22,189,865		22,189,865	213,658,120		213,658,120
Partners' capital, (net asset value) at Mar. 31, 2013	603,620,270
Partners' capital, (net asset value) at Mar. 31, 2013		$ 1,166,402	$ 1,166,402		$ 1,656,746	$ 1,656,746
Partners' capital, (net asset value) (in units) at Mar. 31, 2013		12,004.82		12,004.82	26,448.41		26,448.41	273,985.01		273,985.01
Partners' capital, (net asset value) (in units) at Mar. 31, 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 Mar. 31, 2013		$ 849.59	$ 849.59	$ 849.59	$ 838.99	$ 838.99	$ 838.99	$ 779.82	$ 779.82	$ 779.82