Condensed Statements of Financial Condition (Parentheticals)	Jun. 30, 2011	Dec. 31, 2010
WC Diversified Series [Member] | B0 Members [Member]
Members, units authorized	unlimited	unlimited
Members, units outstanding (in Shares)	19,929.06	7,030.08
WC Diversified Series [Member] | B2 Members [Member]
Members, units authorized	unlimited	unlimited
Members, units outstanding (in Shares)	17,791.65	8,120
Sponsor, units outstanding (in Shares)	10	10
Sponsor, units authorized	unlimited	unlimited
B0 Members [Member]
Members, units authorized	unlimited	unlimited
Members, units outstanding (in Shares)	19,929.06	7,030.08
B2 Members [Member]
Members, units authorized	unlimited	unlimited
Members, units outstanding (in Shares)	17,791.65	8,120
Sponsor, units outstanding (in Shares)	10	10
Sponsor, units authorized	unlimited	unlimited