Condensed Statements of Financial Condition (USD $)	Jun. 30, 2011	Dec. 31, 2010
Assets
Investment in AlphaMetrix WC Diversified Fund - MT0041, at fair value:	$ 14,959,548	$ 6,590,406
Cash at bank	32,567,872	14,404,275
Prepaid commissions	190,212	99,297
Total assets	47,717,632	21,093,978
Liabilities
Accrued sponsor’s fee	13,162	5,299
Accrued management fees	75,116	30,878
Accrued performance fees	862	129,469
Accrued sales commissions	6,010
Accrued operating costs and administrative fees	5,498	4,463
Redemptions payable	147,839
Subscriptions received in advance	7,741,300	4,723,040
Total liabilities	7,989,787	4,893,149
Members’ Capital
Total members’ capital	39,727,845	16,200,829
Total liabilities and members’ capital	47,717,632	21,093,978
WC Diversified Series [Member]
Assets
Investment in AlphaMetrix WC Diversified Fund - MT0041, at fair value:	14,959,548	6,590,406
Cash at bank	32,567,872	14,404,275
Prepaid commissions	190,212	99,297
Total assets	47,717,632	21,093,978
Liabilities
Accrued sponsor’s fee	13,162	5,299
Accrued management fees	75,116	30,878
Accrued performance fees	862	129,469
Accrued sales commissions	6,010
Accrued operating costs and administrative fees	5,498	4,463
Redemptions payable	147,839
Subscriptions received in advance	7,741,300	4,723,040
Total liabilities	7,989,787	4,893,149
Members’ Capital
Total members’ capital	39,727,845	16,200,829
Total liabilities and members’ capital	47,717,632	21,093,978
WC Diversified Series [Member] | B0 Members [Member]
Members’ Capital
Members capital	21,217,596	7,562,143
NAV per Share
NAV	1,064.656	1,075.684
WC Diversified Series [Member] | B2 Members [Member]
Members’ Capital
Members capital	18,499,851	8,628,060
Sponsor (10 units outstanding at June 30, 2011, and December 31, 2010, respectively, unlimited units authorized)	10,398	10,626
NAV per Share
NAV	1,039.805	1,062.568
Sponsor	1,039.805	1,062.568
B0 Members [Member]
Members’ Capital
Members capital	21,217,596	7,562,143
NAV per Share
NAV	1,064.656	1,075.684
B2 Members [Member]
Members’ Capital
Members capital	18,499,851	8,628,060
Sponsor (10 units outstanding at June 30, 2011, and December 31, 2010, respectively, unlimited units authorized)	$ 10,398	$ 10,626
NAV per Share
NAV	1,039.805	1,062.568
Sponsor	1,039.805	1,062.568