Consolidated Statements of Changes in Members' Capital Equity (unaudited) (USD $)	Total	Blended Strategies Portfolio [Member]	Blended Strategies Portfolio [Member] Class 0 Units [Member]	Blended Strategies Portfolio [Member] Class 2 Units [Member]	Systematic Strategies Portfolio [Member]	Systematic Strategies Portfolio [Member] Class 0 Units [Member]	Systematic Strategies Portfolio [Member] Class 2 Units [Member]
Members' capital, beginning balance at Dec. 31, 2010	$ 169,187,110	$ 147,900,169	$ 121,701,356	$ 26,198,813	$ 21,286,941	$ 12,648,247	$ 8,638,694
Members' capital, beginning balance (in units) at Dec. 31, 2010			875,825.668	230,452.833		122,899.506	86,626.635
Subscriptions	42,075,710	31,877,991	24,304,351	7,573,640	10,197,719	3,183,212	7,014,507
Subscriptions (in units)			174,626.189	67,098.824		30,967.594	70,875.708
Redemptions	(7,683,345)	(6,239,813)	(4,515,339)	(1,724,474)	(1,443,532)	(605,177)	(838,355)
Redemptions (in units)			(32,717.946)	(15,340.236)		(5,890.791)	(8,676.685)
Net loss	(10,429,254)	(8,179,686)	(6,464,008)	(1,715,678)	(2,249,568)	(1,080,494)	(1,169,074)
Members' capital, ending balance at Jun. 30, 2011	193,150,221	165,358,661	135,026,360	30,332,301	27,791,560	14,145,788	13,645,772
Members' capital, ending balance (in units) at Jun. 30, 2011			1,017,733.911	282,211.421		147,976.309	148,825.658
Members' capital, beginning balance at Dec. 31, 2011	169,981,297	146,634,313	119,087,637	27,546,676	23,346,984	9,117,153	14,229,831
Members' capital, beginning balance (in units) at Dec. 31, 2011			966,888.461	278,890.248		112,079.324	184,238.954
Subscriptions	6,215,142	5,679,108	4,438,754	1,240,354	536,034	345,034	191,000
Subscriptions (in units)			35,712.731	12,429.917		4,219.762	2,468.619
Redemptions	(26,693,137)	(23,267,323)	(17,960,339)	(5,306,984)	(3,425,814)	(1,094,459)	(2,331,355)
Redemptions (in units)			(144,603.626)	(53,790.179)		(13,377.223)	(30,150.985)
Net loss	(5,638,150)	(4,744,679)	(3,663,340)	(1,081,339)	(893,471)	(316,497)	(576,974)
Members' capital, ending balance at Jun. 30, 2012	$ 143,865,152	$ 124,301,419	$ 101,902,712	$ 22,398,707	$ 19,563,733	$ 8,051,231	$ 11,512,502
Members' capital, ending balance (in units) at Jun. 30, 2012			857,997.566	237,529.986		102,921.863	156,556.588