Consolidated Statements of Financial Condition (Unaudited) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Assets
Total assets	$ 147,029,236	$ 174,892,163
Liabilities:
Accrued redemptions	3,164,084	4,910,866
Total liabilities	3,164,084	4,910,866
Members' capital:
Members' capital	143,865,152	169,981,297
Total liabilities and members' capital	147,029,236	174,892,163
Blended Strategies Portfolio [Member]
Members' capital:
Members' capital	124,301,419	146,634,313
Blended Strategies Portfolio [Member] | Class 0 Units [Member]
Members' capital:
Members' capital	101,902,712	119,087,637
Blended Strategies Portfolio [Member] | Class 2 Units [Member]
Members' capital:
Members' capital	22,398,707	27,546,676
Systematic Strategies Portfolio [Member]
Members' capital:
Members' capital	19,563,733	23,346,984
Systematic Strategies Portfolio [Member] | Class 0 Units [Member]
Members' capital:
Members' capital	8,051,231	9,117,153
Systematic Strategies Portfolio [Member] | Class 2 Units [Member]
Members' capital:
Members' capital	11,512,502	14,229,831
Graham Alternative Investment Trading LLC [Member]
Assets
Investment, at fair value	124,301,419	146,634,313
Redemptions receivable	2,690,030	4,335,458
Graham Alternative Investment Trading II LLC [Member]
Assets
Investment, at fair value	19,563,733	23,346,984
Redemptions receivable	$ 474,054	$ 575,408