Statements of Financial Condition (USD $)	Dec. 31, 2011	Dec. 31, 2010
Assets
Total assets	$ 320,611,967	$ 339,886,818
Liabilities:
Accrued redemptions	10,727,237	1,421,349
Total liabilities	10,727,237	1,421,349
Members' capital:
Members' capital	309,884,730	338,465,469
Total liabilities and members' capital	320,611,967	339,886,818
Blended Strategies Portfolio [Member]
Members' capital:
Members' capital	263,929,118	290,023,320
Blended Strategies Portfolio [Member] | Class 0 Units [Member]
Members' capital:
Members' capital	223,427,719	243,511,752
Blended Strategies Portfolio [Member] | Class 2 Units [Member]
Members' capital:
Members' capital	40,501,399	46,511,568
Systematic Strategies Portfolio [Member]
Members' capital:
Members' capital	45,955,612	48,442,149
Systematic Strategies Portfolio [Member] | Class 0 Units [Member]
Members' capital:
Members' capital	26,254,798	28,297,652
Systematic Strategies Portfolio [Member] | Class 2 Units [Member]
Members' capital:
Members' capital	19,700,814	20,144,497
Graham Alternative Investment Trading LLC [Member]
Assets
Investment, at fair value	263,929,118	290,023,320
Redemption receivable	8,563,194	1,296,065
Graham Alternative Investment Trading II LLC [Member]
Assets
Investment, at fair value	45,955,612	48,442,149
Redemption receivable	$ 2,164,043	$ 125,284