XML 38 R23.htm IDEA: XBRL DOCUMENT v3.8.0.1
Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Restricted cash $ 8,683,095 $ 11,918,100
Cash denominated in foreign currencies 977,236 992,914
Cash denominated in foreign currencies, proceeds   1,024,772
Cash denominated in foreign currencies, cost 984,412  
Provision for income tax 0  
Uncertain tax position $ 0  
Percentage basis of funds on deposit for interest income recognition 100.00%  
Partnership assets percentage not deposited as margin credit for interest income 80.00%  
Annualized general partner administrative fee 2.00%  
Monthly general partner administrative fee 0.1667%  
Monthly ongoing placement agent fee 0.1667%  
Annualized ongoing placement agent fee 2.00%  
Limited partners unit that can be redeemed 100.00%  
Distributions $ 0  
Earliest Tax Year [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2014  
Latest Tax Year [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2017  
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Restricted cash   6,959,456
Cash denominated in foreign currencies   205,801
Cash denominated in foreign currencies, proceeds   $ 205,128
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] | Liquidation Basis of Accounting [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Restricted cash [1] $ 33,804  
Cash denominated in foreign currencies 0  
Cash denominated in foreign currencies, proceeds 0  
Provision for income tax 0  
Uncertain tax position $ 0  
Percentage basis of funds on deposit for interest income recognition 100.00%  
Partnership assets percentage not deposited as margin credit for interest income 80.00%  
Annualized general partner administrative fee 2.00%  
Monthly general partner administrative fee 0.1667%  
Monthly ongoing placement agent fee 0.1667%  
Annualized ongoing placement agent fee 2.00%  
Limited partners unit that can be redeemed 100.00%  
Distributions $ 0  
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] | Earliest Tax Year [Member] | Liquidation Basis of Accounting [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2014  
Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] | Latest Tax Year [Member] | Liquidation Basis of Accounting [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2017  
Ceres Tactical Currency L.P. [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Provision for income tax $ 0  
Uncertain tax position $ 0  
Percentage basis of funds on deposit for interest income recognition 100.00%  
Partnership assets percentage not deposited as margin credit for interest income 80.00%  
Annualized general partner administrative fee 1.60%  
Monthly ongoing placement agent fee 0.1667%  
Annualized ongoing placement agent fee 2.00%  
Limited partners unit that can be redeemed 100.00%  
Distributions $ 0  
Ceres Tactical Currency L.P. [Member] | Earliest Tax Year [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2014  
Ceres Tactical Currency L.P. [Member] | Latest Tax Year [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2017  
Morgan Stanley Smith Barney Spectrum Strategic L.P. [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Provision for income tax $ 0  
Uncertain tax position $ 0  
Percentage basis of funds on deposit for interest income recognition 100.00%  
Partnership assets percentage not deposited as margin credit for interest income 80.00%  
Annualized general partner administrative fee 2.00%  
Monthly general partner administrative fee 0.1667%  
Monthly ongoing placement agent fee 0.1667%  
Annualized ongoing placement agent fee 2.00%  
Limited partners unit that can be redeemed 100.00%  
Distributions $ 0  
Morgan Stanley Smith Barney Spectrum Strategic L.P. [Member] | Earliest Tax Year [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2014  
Morgan Stanley Smith Barney Spectrum Strategic L.P. [Member] | Latest Tax Year [Member]    
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]    
Open tax year 2017  
[1] Presented on a liquidation basis of accounting.