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Related Party Transactions
9 Months Ended
Sep. 30, 2011
Related Party Transactions [Abstract] 
Related Party Transactions
3.  Related Party Transactions
The Partnership's cash is on deposit with MSSB, MS&Co., and MSIP, in Futures Interests trading accounts to meet margin requirements as needed.  MSSB pays the Partnership at each month end interest income on 80% of the funds on deposit with the commodity brokers at a rate equal to the monthly average of the 4-week U.S. Treasury bill discount rate during such month.  MSSB retains any interest earned in excess of the interest paid by MSSB to the Partnership.  For purposes of such interest payments, net assets do not include monies owed to the Partnership on Futures Interests.  The Partnership pays brokerage fees to MS&Co.