Accounting Policies [Abstract] Accounting Policies [Abstract] Accrued Liabilities [Abstract] Accrued expenses: Altis Partners (Jersey) Limited Altis Partners (Jersey) Limited [Member] Altis [Member] Amendment Flag Amendment Flag Annualized general partner administrative fee percentage payable to Ceres Managed Futures LLC, the General Partner, equal to a stated percentage of the Partnership's net assets. Annualized General Partner Administrative Fee Percentage Annualized general partner administrative fee Annualized placement agent fee percentage payable to Morgan Stanley Wealth Management equal to a stated percentage of the Partnership's net assets. Annualized Placement Agent Fee Percentage Annualized ongoing placement agent fee Assets Total assets Assets [Abstract] Assets: Assets, Fair Value Disclosure Total assets Average notional value of derivative. Average Notional Value Of Derivative Average notional value of derivative Basis of Accounting, Policy [Policy Text Block] Investment Company Status Basis of Presentation and Significant Accounting Policies [Text Block] Basis of Presentation and Summary of Significant Accounting Policies Brokers and Dealers [Abstract] Brokers and Dealers [Abstract] Brokers and Dealers Disclosure [Text Block] Trading Activities Cash Cash at bank (Note 1) Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Restricted and Unrestricted Cash Cash held in fund denominated in foreign currency. Cash Held In Fund Denominated In Foreign Currency Cash denominated in foreign currencies Cash held in fund denominated in foreign currency at cost. Cash Held In Fund Denominated In Foreign Currency At Cost Cash denominated in foreign currencies, cost Cash Segregated under Commodity Exchange Act Regulation Unrestricted cash (Note 2e) Ceres Tactical Currency L.P. Ceres Tactical Currency L.P. [Member] Ceres Tactical Currency L.P. [Member] Commissions Payable to Broker-Dealers and Clearing Organizations Ongoing placement agent fees (Note 2j) Commodity [Member] Commodity [Member] Current Fiscal Year End Date Current Fiscal Year End Date Derivative Asset, Fair Value, Gross Liability Gross Amounts Offset in the Statements of Financial Condition, Assets Derivative Asset, Notional Amount Notional Amount Derivative Asset Net unrealized appreciation on open contracts Amounts Presented in the Statements of Financial Condition, Assets Derivative, Collateral, Obligation to Return Cash Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Received/ Pledged, Assets Derivative, Collateral, Obligation to Return Securities Gross Amounts Not Offset in the Statements of Financial Condition, Financial Instruments, Assets Derivative, Collateral, Right to Reclaim Cash Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Received/ Pledged, Liabilities Derivative, Collateral, Right to Reclaim Securities Gross Amounts Not Offset in the Statements of Financial Condition, Financial Instruments, Liabilities Derivative Asset, Fair Value, Gross Asset Gross Amounts Recognized, Assets Derivative Asset, Fair Value, Amount Offset Against Collateral Net Amount, Assets Derivative Liability, Fair Value, Gross Liability Gross Amounts Recognized, Liabilities Derivative Liability, Fair Value, Amount Offset Against Collateral Net Amount, Liabilities Derivative, Fair Value, Net Net fair value Derivative Financial Instruments, Assets [Member] Total Unrealized Appreciation on Open Contracts [Member] Derivative Financial Instruments, Liabilities [Member] Total Unrealized Depreciation on Open Contracts [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Liability Net unrealized depreciation on open contracts Amounts Presented in the Statements of Financial Condition, Liabilities Derivative Liability, Fair Value, Gross Asset Gross Amounts Offset in the Statements of Financial Condition, Liabilities Derivative Liability, Notional Amount Notional Amount Derivative [Line Items] Derivative [Line Items] Derivative, Number of Instruments Held Derivative instruments held Derivative [Table] Derivative [Table] Dissolution Of Partnership Policy [Text Block] Dissolution Of Partnership [Policy Text Block] Dissolution of the Partnerships Distributions Policy [Text Block] Distributions [Policy Text Block] Distributions Document and entity information. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share, Policy [Policy Text Block] Net Income (Loss) per Unit EMC Capital Management, Inc. EMC Capital Management Inc [Member] EMC [Member] Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Current Reporting Status Entity [Domain] Entity [Domain] Entity Emerging Growth Company Emerging Growth Company Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Registrant Name Entity Registrant Name Entity Shell Company Entity Shell Company Entity Small Business Entity Small Business Entity Voluntary Filers Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Equity [Member] Equity [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Asset Class [Domain] Asset Class [Domain] Asset Class [Axis] Asset Class [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Liability Class [Axis] Liability Class [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value, Inputs, Level 1 [Member] Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Level 3 [Member] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Fair Value Measurements Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments Disclosure [Text Block] Financial Instruments Fixed Income Interest Rate [Member] Interest Rates [Member] Floor Brokerage, Exchange and Clearance Fees Ongoing placement agent fees (Note 2j) Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currency Transactions and Translation Foreign Exchange [Member] Currencies [Member] Forward Contracts [Member] Forward Contracts [Member] Future [Member] Futures Contracts [Member] Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net Total trading results General partner fees. General Partner Fees General Partner fees (Note 2i) General partner fees payable. General Partner Fees Payable General Partner fees (Note 2i) General Partner [Member] General Partner [Member] Proportional equity interest amount of ownership required in each Limited Partnership by a General Partner. General Partner Required Equity Interest In Each Partnership Required interest in the equity of each Partnership General Partners' Capital Account General Partner General Partners' Capital Account, Units Outstanding General Partner, Units outstanding Graham Capital Management, L.P. Graham Capital Management LP [Member] Graham [Member] Incentive Distribution Policy, Managing Member or General Partner, Description [Policy Text Block] General Partner Fees Rate basis on trading profits experienced with respect to allocated net assets for incentive obligation payable in cash or stock during the period to a limited liability corporation managing member or limited partnership general partner. Incentive Fee Rate Trading Advisor Incentive fee, monthly trading profits basis Income Statement [Abstract] Income Statement [Abstract] Income Tax Expense (Benefit) Provision for income tax Income Tax, Policy [Policy Text Block] Income Taxes Interest Income, Operating Interest income Interest Receivable Interest receivable (Note 2h) Investment Company [Abstract] Investment Company [Abstract] Investment Company, Expense Ratio after Incentive Allocation Operating expenses after incentive fees Investment Company, Expense Ratio before Incentive Allocation Operating expenses before incentive fees Investment Company, Financial Highlights [Line Items] Investment Company, Financial Highlights [Line Items] Investment Company, Financial Highlights [Table] Investment Company, Financial Highlights [Table] Investment Company, Financial Highlights [Table Text Block] Financial Highlights for the Limited Partner Class Investment Company, Financial Highlights [Text Block] Financial Highlights Investment Company, Financial Ratios [Abstract] Ratios to Average Limited Partners' Capital: Investment Company, Gain (Loss) on Investment, Per Share Net realized and unrealized gains (losses) Investment Company, Incentive Fee to Average Net Assets Incentive fees Incentive fees Investment Company, Investment Income (Loss) from Operations, Per Share Net increase (decrease) for the year Investment Company, Investment Income (Loss) from Operations, Per Share [Abstract] Per Unit Performance (for a unit outstanding throughout the year): Investment Company, Investment Income (Loss), Per Share Net investment loss Investment Company, Investment Income (Loss) Ratio Net investment loss Investment Company, Total Return [Abstract] Total return: Investment Company, Total Return after Incentive Fees Total return after incentive fees Investment Company, Total Return before Incentive Fees Total return before incentive fees Investment Holdings [Abstract] Investment Holdings [Abstract] Investment Holdings [Abstract] Investment Income, Net Net investment loss Investment Income, Net [Abstract] Investment Income: Investment Owned, Balance, Contracts Number of Contracts Investment Owned, Percent of Net Assets % of Partners' Capital Investment Owned, Unrecognized Unrealized Appreciation Total unrealized appreciation on open contracts Unrealized Appreciation on Open Contracts Investment Owned, Unrecognized Unrealized Appreciation (Depreciation), Net Net unrealized appreciation (depreciation) on open contracts Net unrealized appreciation (depreciation) on open contracts Investment Owned, Unrecognized Unrealized Depreciation Total unrealized depreciation on open contracts Unrealized Depreciation on Open Contracts Investments, All Other Investments [Abstract] Investments, All Other Investments [Abstract] Investment Sector [Axis] Investment Sector [Axis] Investment Sector [Domain] Investment Sector [Domain] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Legal Entity [Axis] Legal Entity [Axis] Liabilities Total liabilities Liabilities [Abstract] Liabilities: Liabilities and Equity Total liabilities and partners' capital Liabilities and Equity [Abstract] Liabilities and Partners' Capital: Financial and Nonfinancial Liabilities, Fair Value Disclosure Total liabilities Liability for Uncertainty in Income Taxes, Current Uncertain tax position Limited Partner [Member] Limited Partners [Member] Limited Partners' Capital Account Limited Partners Limited Partners' Capital Account, Units Outstanding Limited Partners, Units outstanding The percentage amount of units that limited partners can redeemed. Limited Partners Unit That Can Be Redeemed Limited partners unit that can be redeemed Liquidation Basis of Accounting [Member] Liquidation Basis of Accounting [Member] Long [Member] Long [Member] Management and Investment Advisory Fees, Policy [Policy Text Block] Ongoing Placement Agent Fees Management Fee Expense Management fees (Note 3) Carrying amount of the unpaid portion of the fee payable to the trading advisor. Management Fees Payable Management fees (Note 3) Management fees payable annual percentage. Management Fees Payable Annual Percentage Management fee, annual basis Management fees payable monthly percentage. Management Fees Payable Monthly Percentage Management fee, monthly basis Maximum [Member] Maximum [Member] Metals [Member] Metals [Member] Metals [Member] Minimum [Member] Minimum [Member] Average number of derivative contracts traded. Monthly Average Number Of Derivative Contracts Traded Average number of derivative contracts traded Monthly general partner administrative fee percentage. Monthly General Partner Administrative Fee Percentage Monthly general partner administrative fee Monthly placement agent fee percentage payable to Morgan Stanley Wealth Management equal to a stated percentage of the Partnership's net assets. Monthly Placement Agent Fee Percentage Monthly ongoing placement agent fee Morgan Stanley Smith Barney Spectrum Strategic L.P. Morgan Stanley Smith Barney Spectrum Strategic L P [Member] Morgan Stanley Smith Barney Spectrum Strategic L.P. [Member] Morgan Stanley Smith Barney Spectrum Technical L.P. Morgan Stanley Smith Barney Spectrum Technical L- P- [Member] Morgan Stanley Smith Barney Spectrum Technical L.P. [Member] Net Asset Value Per Share Net asset value per Unit, end of year Net asset value per Unit, beginning of year Net asset value per Unit Net Income (Loss) Attributable to Parent Net income (loss) Net income (loss) Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax Net income (loss) per Unit (Note 7) Open Tax Year Open tax year Operating Expenses Total expenses Operating Expenses [Abstract] Expenses: Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization Over the Counter [Member] Off Exchange Traded [Member] Partners' Capital Partners' Capital, balance Partners' Capital, balance Total partners' capital (net asset value) Partners' Capital [Abstract] Partners' Capital: Partners' Capital Account, Distributions Distributions Partners' Capital Account, Units Units of Partnership Interest, balance Units of Partnership Interest, balance Partners' Capital Account, Units, Redeemed Redemptions - Redeemable Units Basis amount of assets not deposited as margin with a Partnership interest used in the calculation of interest income. Partnership Assets Percentage Not Deposited As Margin Credit For Interest Income Partnership assets percentage not deposited as margin credit for interest income Basis amount of funds on deposit with a Partnership interest used in the calculation of interest income. Partnership Deposit Fund Percentage Basis For Interest Income Recognition Percentage basis of funds on deposit for interest income recognition Partnership's Investments [Policy Text Block] Partnership Investments [Policy Text Block] Partnerships' Investments Partnership Trading Equity [Policy Text Block] Partnership Trading Equity [Policy Text Block] Equity in Trading Account Partner Type [Axis] Partner Type [Axis] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Percentage Of Investments Percentage Of Investments Percentage of total investments Position [Axis] Position [Axis] Position [Domain] Position [Domain] Principal Transactions Revenue, Net Total trading results Principal Transactions Revenue, Net [Abstract] Trading Results: Profit allocation policy. Profit Allocation Policy [Policy Text Block] Profit Allocation Rabar Market Research, Inc. Rabar Market Research Inc [Member] Rabar [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Realized Investment Gains (Losses) Net realized gains (losses) on investment Redemptions general partner. Redemptions General Partner Redemptions - General Partner Redemptions limited partners. Redemptions Limited Partners Redemptions - Limited Partners Redemptions payable to limited partner. Redemptions Payable To Limited Partner Redemptions payable to Limited Partners (Note 2m) Redemptions Policy [Text Block] Redemptions [Policy Text Block] Redemptions Restricted Cash and Cash Equivalents Restricted cash Restricted cash (Note 2e) Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Schedule of Derivative Instruments Included in Trading Activities [Table Text Block] Trading Gains and Losses, by Market Sector, on Derivative Instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Gross Fair Values of Derivative Instruments of Futures and Forward Contracts as Separate Assets and Liabilities