Consolidated Statements of Financial Condition (USD $)	Dec. 31, 2011	Dec. 31, 2010
Assets
Total assets	$ 174,892,163	$ 171,052,375
Liabilities:
Accrued redemptions	4,910,866	1,865,265
Total liabilities	4,910,866	1,865,265
Members' capital:
Members' capital	169,981,297	169,187,110
Total liabilities and members' capital	174,892,163	171,052,375
Blended Strategies Portfolio [Member] | Class 0 units [Member]
Members' capital:
Members' capital	119,087,637	121,701,356
Blended Strategies Portfolio [Member] | Class 2 Units [Member]
Members' capital:
Members' capital	27,546,676	26,198,813
Total Blended Strategies Portfolio [Member]
Members' capital:
Members' capital	146,634,313	147,900,169
Systematic Strategies Portfolio [Member] | Class 0 units [Member]
Members' capital:
Members' capital	9,117,153	12,648,247
Systematic Strategies Portfolio [Member] | Class 2 Units [Member]
Members' capital:
Members' capital	14,229,831	8,638,694
Total Systematic Strategies Portfolio [Member]
Members' capital:
Members' capital	23,346,984	21,286,941
Graham Alternative Investment Trading LLC [Member]
Assets
Investment, at fair value	146,634,313	147,900,169
Redemptions receivable	4,335,458	1,136,034
Graham Alternative Investment Trading II LLC [Member]
Assets
Investment, at fair value	23,346,984	21,286,941
Redemptions receivable	$ 575,408	$ 729,231