Consolidated Statements of Changes in Members' Capital Equity (USD $)	Blended Strategies Portfolio [Member] Class 0 units [Member]	Blended Strategies Portfolio [Member] Class 2 Units [Member]	Total Blended Strategies Portfolio [Member]	Systematic Strategies Portfolio [Member] Class 0 units [Member]	Systematic Strategies Portfolio [Member] Class 2 Units [Member]	Total Systematic Strategies Portfolio [Member]	Total
Members' capital at Dec. 31, 2009	$ 86,253,313	$ 18,215,970	$ 104,469,283	$ 4,210,889	$ 3,035,716	$ 7,246,605	$ 111,715,888
Members' capital (in units) at Dec. 31, 2009	636,284.928	161,590.940		41,862.245	30,647.378
Increase (Decrease) in Partners' Capital [Roll Forward]
Subscriptions	37,406,366	9,722,618	47,128,984	8,487,082	5,563,600	14,050,682	61,179,666
Subscriptions (in units)	276,005.252	86,443.798		89,634.665	58,453.515
Redemptions	(4,978,719)	(1,960,308)	(6,939,027)	(873,950)	(235,115)	(1,109,065)	(8,048,092)
Redemptions (in units)	(36,464.512)	(17,581.905)		(8,597.404)	(2,474.258)
Net (loss) income	3,020,396	220,533	3,240,929	824,226	274,493	1,098,719	4,339,648
Members' capital at Dec. 31, 2010	121,701,356	26,198,813	147,900,169	12,648,247	8,638,694	21,286,941	169,187,110
Members' capital (in units) at Dec. 31, 2010	875,825.668	230,452.833		122,899.506	86,626.635
Increase (Decrease) in Partners' Capital [Roll Forward]
Subscriptions	35,989,398	9,474,828	45,464,226	5,210,859	11,291,075	16,501,934	61,966,160
Subscriptions (in units)	262,762.860	85,057.688		53,326.349	118,900.914
Redemptions	(21,754,496)	(3,904,610)	(25,659,106)	(5,765,960)	(1,873,831)	(7,639,791)	(33,298,897)
Redemptions (in units)	(171,700.067)	(36,620.273)		(64,146.531)	(21,288.595)
Net (loss) income	(16,848,621)	(4,222,355)	(21,070,976)	(2,975,993)	(3,826,107)	(6,802,100)	(27,873,076)
Members' capital at Dec. 31, 2011	$ 119,087,637	$ 27,546,676	$ 146,634,313	$ 9,117,153	$ 14,229,831	$ 23,346,984	$ 169,981,297
Members' capital (in units) at Dec. 31, 2011	966,888.461	278,890.248		112,079.324	184,238.954