STATEMENTS OF FINANCIAL CONDITION (USD $)	Jun. 30, 2011	Dec. 31, 2010
Trading Equity:
Unrestricted cash	$ 317,134,739	$ 362,360,920
Restricted cash	28,141,052	39,088,853
Total cash	345,275,791	401,449,773
Net unrealized gain on open contracts (MSCo.)	778,208	19,046,952
Net unrealized gain (loss) on open contracts (MSIP)	(1,139,532)	756,215
Total net unrealized gain (loss) on open contracts	(361,324)	19,803,167
Total Trading Equity	344,914,467	421,252,940
Interest receivable (MSSB)	3,318	26,871
Total Assets	344,917,785	421,279,811
Liabilities:
Redemptions payable	4,096,562	7,999,594
Accrued brokerage fees (MSCo.)	1,790,495	1,972,489
Accrued management fees	648,878	751,806
Accrued incentive fee	0	1,305,062
Total Liabilities	6,535,935	12,028,951
Partners' Capital:
Limited Partners (9,842,280.038 and 10,646,418.942 Units, respectively)	334,886,507	404,921,242
General Partner (102,727.769 and 113,836.769 Units, respectively)	3,495,343	4,329,618
Total Partners' Capital	338,381,850	409,250,860
Total Liabilities and Partners' Capital	$ 344,917,785	$ 421,279,811
NET ASSET VALUE PER UNIT (in dollars per unit)	$ 34.03	$ 38.03