75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - STATEMENTS OF FINANCIAL CONDITION link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - STATEMENTS OF FINANCIAL CONDITION (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - STATEMENTS OF CHANGES IN PARTNERS' CAPITAL link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - CONDENSED SCHEDULES OF INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 75070 - Statement - CONDENSED SCHEDULES OF INVESTMENTS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Organization of the Partnership link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Limited Partnership Agreement link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Financial Guarantees link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Financial Highlights link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk (Tables) link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Financial Highlights (Tables) link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Organization of the Partnership - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995615 - Disclosure - Significant Accounting Policies - Schedule of Cash and Cash Equivalents and Restricted Cash (Detail) link:presentationLink link:calculationLink link:definitionLink 995625 - Disclosure - Limited Partnership Agreement - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995635 - Disclosure - Fair Value Measurements - Summary Categorization of Trading Company's Investments Based on Level of Inputs Utilized (Detail) link:presentationLink link:calculationLink link:definitionLink 995645 - Disclosure - Fair Value Measurements - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995655 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Fair Value and Notional Amounts of Credit Default Swaps (Detail) link:presentationLink link:calculationLink link:definitionLink 995665 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Schedule of Derivative Contracts Traded or Settled During Period (Detail) link:presentationLink link:calculationLink link:definitionLink 995675 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Schedule of Gross Notional Value of Derivative Contracts (Detail) link:presentationLink link:calculationLink link:definitionLink 995685 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995695 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Schedule of Fair Value of Trading Company's Derivative Instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 995705 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Impact of Derivative Instruments on Statements of Operations (Detail) link:presentationLink link:calculationLink link:definitionLink 995715 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Schedule of Additional Disclosures Regarding Offsetting of Derivative Assets (Detail) link:presentationLink link:calculationLink link:definitionLink 995725 - Disclosure - Derivative Financial Instruments and Concentrations of Credit Risk - Schedule of Additional Disclosures Regarding Offsetting of Derivative Liabilities (Detail) link:presentationLink link:calculationLink link:definitionLink 995735 - Disclosure - Financial Guarantees - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995745 - Disclosure - Financial Highlights - Ratios to Average Partners' Capital and Other Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995755 - Disclosure - Financial Highlights - Ratios to Average Partners' Capital and Other Information (Detail) 2 link:presentationLink link:calculationLink link:definitionLink 995765 - Disclosure - Segment Reporting - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995775 - Disclosure - Subsequent Events - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink General Partner, unit equivalents outstanding General Partners' Capital Account, Units Outstanding Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Fair Value of Trading Company's Derivative Instruments Net unrealized trading gains losses on open swap contracts percent of partners capital. Net Unrealized Trading Gains Losses On Open Swap Contracts Percent Of Partners Capital Net unrealized trading appreciation/(depreciation) on open swap agreements NET UNREALIZED TRADING APPRECIATION/ (DEPRECIATION) ON OPEN SWAP AGREEMENTS, Percent of Partners' Capital Interest Expense, Total Interest Expense, Operating and Nonoperating Interest expense - brokers Subsidiary or Equity Method Investee [Line Items] Income (Loss) Attributable to Parent, before Tax Net income/(loss) NET INCOME/(LOSS) Net income/(loss) Limited Partners' Capital Account, Units Outstanding Limited Partners, units outstanding Industry Sector [Axis] Investment Secondary Categorization [Axis] Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument [Member] Minimum [Member] Minimum [Member] Floor Brokerage, Exchange and Clearance Fees, Total Floor Brokerage, Exchange and Clearance Fees Brokerage commissions Agricultural. Agricultural [Member] Agricultural [Member] Increase (decrease) management fees payable. Increase Decrease Management Fees Payable Increase/(decrease) in management fees payable Due To Brokers Due To Brokers Due to Brokers Consolidated Entities [Domain] Consolidated Entities [Domain] Segment Reporting [Line Items] Other Expenses Other expenses Income Tax Expense (Benefit), Total Income Tax Expense (Benefit) Tax expenses, including interest or penalties US Treasury Bill Securities [Member] U.S. Treasury Bills [Member] Represents redemptions requested from the trading company outstanding at the balance sheet date. Due From Master Fund Due from Man-AHL Diversified Trading Company L.P. Counterparty Name [Domain] Counterparty Name [Domain] Schedule of Limited Partners' Capital Account by Class [Table] Partners' Capital, Limited Partner's Capital Account, Class [Table] Limited Partnership Agreement Partnership agreement disclosure. Partnership Agreement Disclosure [Text Block] Subsidiary or Equity Method Investee, Sale of Stock [Table] Us Government Securities - Long [Member] Us Government Securities - Long [Member] US Government Securities—long [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Income Statement [Axis] Income Statement Location [Axis] Income Statement Axis Unrealized trading gains on open swap contracts. Unrealized Trading Gains On Open Swap Contracts Net unrealized trading appreciation on open swap agreements Increase (Decrease) in Payables to Broker-Dealers and Clearing Organizations Increase/(decrease) in due to brokers Man-AHL Diversified I LP. Man AHL Diversified One LP [Member] Man-AHL Diversified I L.P [Member] Investment Company, Financial Highlights [Line Items] Income Statement [Abstract] Forward Contracts - Cross Currencies - Depreciation. Forward Contracts - Cross Currencies - Depreciation [Member] Credit Spread On Underlying Basis Points One [Member] Credit Spread On Underlying Basis Points One [Member] Credit Spread in Basis Points 0-100 [Member] Related Party [Domain] Related Party [Domain] Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral, Total Derivative Asset, Fair Value, Amount Not Offset Against Collateral Gross Amounts of Recognized Assets United Kingdom, Pounds U.K. pound [Member] Document Period End Date Period End Date Common units minimum transferrable interse value. Common Units Minimum Transferrable Interse Value Common units minimum transferrable interse value Investment Company, Financial Ratios [Abstract] Ratios to average limited partners' capital: United States Treasury Bill 0% 03/27/25 [Member] United States Treasury Bill Zero Percentage Twenty Seven March Two Thousand Twenty Five [Member] United States Treasury Bill Zero Percentage Twenty Seven March Two Thousand Twenty Five. United States Treasury Bill Three Point Nine Five Percentage Nineteen November Two Thousand Twenty Six [Member] United states treasury bill three point nine five percentage nineteen november two thousand twenty six. United States Treasury Bill 3.95% 11/19/26 [Member] Brokerage commissions expense. Brokerage Commissions Expense Brokerage commissions Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currency Increase Decrease From Upfront Premiums Received On Credit Default Swap Agreements Increase Decrease From Upfront Premiums Received On Credit Default Swap Agreements Increase/(decrease) in net premiums received on credit default swap agreements Interest Rate Contract [Member] Interest Rates [Member] Investments [Domain] Investments [Domain] Forward Contracts Cross Currencies And Metal Non US Dollar [Member] Forward Contracts Cross Currencies And Metal Non US Dollar [Member] Forward contracts cross currencies and metal non us dollar. Derivative Liability, Collateral, Right to Reclaim Cash, Offset Gross Amount Offset in the Statements of Financial Condition, Liability Partners' Capital Account, Distributions, Total Partners' Capital Account, Distributions Distributions declared Basis points, Maximum Maximum amount of credit spread for open credit default swaps sold. Credit Spread Maximum Credit spread basis points, Maximum Net unrealized trading gains losses on open swap contracts. Net Unrealized Trading Gains Losses On Open Swap Contracts Net unrealized trading appreciation/(depreciation) on open swap agreements, Fair Value NET UNREALIZED TRADING APPRECIATION/ (DEPRECIATION) ON OPEN SWAP AGREEMENTS, Fair Value Supplemental Cash Flow Elements [Abstract] Supplemental Cash Flow Elements [Abstract] Assets Total assets Partnership owned units in trading company. Partnership Owned Units In Trading Company Partnership owned units in Trading Company Title of 12(b) Security Other income policy text block. Other Income [Policy Text Block] Other Income JP Morgan Chase [Member] J.P. Morgan Chase [Member] J.P. Morgan Chase. Partners' Capital Account, Contributions Subscriptions Reclassification, Comparability Adjustment [Policy Text Block] Comparative Information Class Series Two [Member] Class Series Two [Member] Class A Series 2 [Member] Derivative, Notional Amount Notional value BNY Mellon Member] BNY Mellon Member] BNY Mellon. Interest Paid, Excluding Capitalized Interest, Operating Activity Cash paid for interest during the period United States Treasury Bill 3.56% 02/19/26 [Member] United States Treasury Bill Three Point Five Six Percentage Nineteen February Two Thousand Twenty Six [Member] United states treasury bill three point five six percentage nineteen february two thousand twenty six. Percentage of the trading company owned by the partnership on balance sheet date. Percentage Of Partners Capital Account Partnership's aggregate ownership percentage of the Trading Company United States Treasury Bill Zero Percentage Third April Two Thousand Twenty Five [Member] United States Treasury Bill Zero Percentage Third April Two Thousand Twenty Five. United States Treasury Bill 0% 04/03/25 [Member] Investment Company, Investment Income (Loss), Per Share, Basic Net investment income (loss) Unrealized Trading Gains Losses On Open Future Contracts Unrealized trading gains losses on open future contracts. Net unrealized trading depreciation on open futures contracts Futures contracts short. Futures Contracts Short [Member] Futures Contracts—Short [Member] Percentage of monthly management fee. Percentage Of Partners Capital Management Fee Percentage of Advisor monthly management fee Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax, Total Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax NET INCOME/(LOSS) PER UNIT OF PARTNERSHIP INTEREST (based on weighted average number of units outstanding during the period): Investment Company Total Return Incentive Fees Investment company total return incentive fees. Incentive fees Offsetting Liabilities [Table Text Block] Schedule of Additional Disclosures Regarding Offsetting of Derivative Liabilities Entity Address, Address Line Two Credit Spread On Underlying Basis Points Two [Member] Credit Spread On Underlying Basis Points Two [Member] Credit Spread in Basis Points 101-250 [Member] Management Fee Payable Management fees payable Basis points, Minimum Minimum amount of credit spread for open credit default swaps sold. Credit Spread Minimum Credit spread basis points, Minimum Partnership dissolution date. Partnership Dissolution Date Partnership dissolution date Number of forward contracts, settled Number of contracts settled. Number Of Contracts Settled Forward contracts Swap [Member] Swap Agreements [Member] Swap agreements [Member] Number of reportable segment Number of Reportable Segments Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Hongkong and Shanghai Banking Corporation Limited [Member] Hongkong and Shanghai Banking Corporation Limited [Member] HSBC [Member] Premiums Received On Derivative Instruments Net premiums received on credit default swap agreements Premiums received on derivative instruments. Premiums received on credit default swap agreements Statement of Cash Flows - Cash and cash equivalents (including restricted cash) consists of: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] As at September 30, 2026, and December 31, 2025 and September 30, 2025, the amounts included in cash and cash equivalents and restricted cash include the following: Credit Default Swap [Member] Credit Default Swaps [Member] Credit Spread On Underlying Basis Points Three [Member] Credit Spread On Underlying Basis Points Three [Member] Credit Spread in Basis Points 251-350 [Member] Percentage of annual servicing fee to MII. Payment Of Yearly Servicing Fee Percentage of annually servicing fee to MII Unrealized trading gains and losses denominated in foreign currencies are translated at exchange rates at the balance sheet date. The resulting net unrealized foreign exchange gain or loss is recorded in the income statement. Net Change In Unrealized Gains On Translation Of Foreign Currency Net change in unrealized gains (losses) on translation of foreign currency Net change in unrealized appreciation/(depreciation) on translation of foreign currency Range [Axis] Range [Axis] Interest receivable Accrued Investment Income Receivable Entity Interactive Data Current Investment Company [Abstract] Disclosure of amount due from correspondent broker dealer clears transactions on behalf of or through correspondents. Due From Brokers [Policy Text Block] Due from Brokers Limited partnership agreement. Limited Partnership Agreement [Member] Limited Partnership Agreement [Member] Business Description and Basis of Presentation [Text Block] Organization of the Partnership Liabilities Total liabilities Capital Unit, Class B [Member] Class B Series 1 [Member] Class B Series Two [Member] Class B Series two. Class B Series 2 [Member] Percentage of annual management fee. Advisor Yearly Management Fee Percentage of Advisor management fee annually Derivative Asset, Collateral, Obligation to Return Cash, Offset Gross Amount Offset in the Statements of Financial Condition Fair Value, Net Asset (Liability) Net Fair Value, Fair Value Measurement Commodity [Member] Commodity forwards [Member] United States Treasury Bill Three Point Five Seven Percentage Second April Two Thousand Twenty Six [Member] United states treasury bill three point five seven percentage second april two thousand twenty six. United States Treasury Bill 3.57% 04/02/26 [Member] Percentage of monthly servicing fee to MII. Payment Of Monthly Servicing Fee Percentage of monthly servicing fee to MII Derivative Asset, Notional Amount Credit default swaps, Notional Amount Total partnership expenses Operating Expenses Investment Company, Gain (Loss) on Investment, Per Share Net realized gains/(losses) and change in unrealized appreciation/(depreciation) on trading activities and translation of foreign currency Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Statement of Cash Flows - Changes in operating assets and liabilities: Net unrealized trading gains losses on open contracts. Net Unrealized Trading Gains Losses On Open Contracts NET UNREALIZED TRADING APPRECIATION/(DEPRECIATION) ON OPEN CONTRACTS/AGREEMENTS NET UNREALIZED TRADING APPRECIATION/(DEPRECIATION) ON OPEN CONTRACTS/AGREEMENTS, Fair Value Investment Company, Investment Income (Loss) from Operations, Per Share [Abstract] Income/(loss) from investment operations: Investment Company, Investment Income (Loss) Ratio Net investment income (loss) Gain (Loss) on Derivative Instruments, Net, Pretax [Abstract] REALIZED GAINS/(LOSSES) AND CHANGE IN UNREALIZED APPRECIATION/(DEPRECIATION) ON TRADING ACTIVITIES ALLOCATED FROM MAN-AHL DIVERSIFIED TRADING COMPANY L.P.: Metal. Metal [Member] Metals [Member] Restricted cash Restricted Cash Restricted Cash, Total Derivative Liability Net Amounts of Liabilities Presented in the Statements of Financial Condition Shareholder operating expenses. Shareholder Operating Expenses Shareholder expenses Income Tax, Policy [Policy Text Block] Income Taxes Subsequent Events [Text Block] Subsequent Events Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Ratios to average partners capital and other supplemental information. Ratios To Average Partners Capital And Other Supplemental Information [Table Text Block] Ratios to Average Partners' Capital and Other Information Administrative fees expense income net. Administrative Fees Expense Income Net Administration fees Investment Owned, Percent of Net Assets Percent of Partners' Capital Partner Type [Axis] Partner Type [Axis] Indices. Indices [Member] Indices [Member] Financial guarantees. Financial Guarantees [Text Block] Financial Guarantees Foreign cash balances at carrying value. Foreign cash balances at carrying value Foreign cash balances Derivative [Line Items] Derivative [Line Items] Credit Derivatives Contract Type [Domain] Credit Derivatives Contract Type [Domain] Increase (Decrease) from Upfront Premiums Paid on Credit Default Swap Agreements. Increase Decrease From Upfront Premiums Paid On Credit Default Swap Agreements (Increase)/decrease in net premiums paid on credit default swap agreements Liabilities and Equity Total liabilities and partners' capital Document Fiscal Period Focus Future [Member] Futures Contracts [Member] Exchange-traded futures contracts [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Servicing fees expense. Servicing Fees Expense Servicing fees Futures Contracts Appreciation Long [Member] Futures Contracts Appreciation Long [Member] Increase (Decrease) in Accrued Interest Receivable, Net (Increase)/decrease in interest receivable (Increase)/decrease in interest receivable Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect NET INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH Entity Current Reporting Status Use of Estimates, Policy [Policy Text Block] Use of Estimates Goldman Sachs Member. Goldman Sachs [Member] Goldman Sachs [Member] United States Treasury Bill Four Point Zero Five Percentage Seventh January Two Thousand Twenty Seven [Member] United states treasury bill four point zero five percentage seventh january two thousand twenty seven. United States Treasury Bill 4.05% 01/07/27 [Member] Fair Value, Inputs, Level 1 [Member] Level 1 [Member] Investment Company, Financial Highlights [Text Block] Financial Highlights United States Treasury Bill Three Point Seven Eight Percentage Eighteen February Two Thousand Twenty Seven [Member] United states treasury bill three point seven eight percentage eighteen february two thousand twenty seven. United States Treasury Bill 3.78% 02/18/27 [Member] Barclays. Barclays [Member] Barclays [Member] Investment Type [Axis] Investment Type [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Assets, Fair Value Disclosure, Total Assets, Fair Value Disclosure Total Assets, Fair Value Measurement Schedule of cash and cash equivalents and restricted cash lineitems. Schedule of Cash and Cash Equivalents and Restricted Cash [Line Items] Interest Income, Operating, Total Interest Income, Operating Interest income Document Transition Report Subsequent Event [Line Items] Subsequent Event [Line Items] Redemptions payable. Redemptions Payable Redemptions payable Gain (Loss) on Sale of Investments, Total Gain (Loss) on Sale of Investments Sales/maturities of investments in securities Shareholder expenses. Shareholder Expenses Shareholder expenses Net asset value of class A series two and class B series two units. Net Asset Value Of Class A- Series Two And Class B- Series Two Units [Member] Net Asset Value of Class A Series 2 and Class B Series 2 Units [Member] Investment Company, Investment Income (Loss) from Operations, Per Share Total income (loss) from investment operations Investment Company, Total Return after Incentive Fees Total return after incentive fees Net unrealized trading gains losses on open contracts, percent of partners capital. Net Unrealized Trading Gains Losses On Open Contracts Percent Of Partners Capital NET UNREALIZED TRADING APPRECIATION/(DEPRECIATION) ON OPEN CONTRACTS/AGREEMENTS NET UNREALIZED TRADING APPRECIATION/(DEPRECIATION) ON OPEN CONTRACTS/AGREEMENTS, Percent of Partners' Capital Administration fees General and administrative expense (income). General and Administrative Expense Income Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Financial Instruments and Concentrations of Credit Risk Range [Domain] Range [Domain] Brazilian Real [Member] Brazil, Brazil Real Australia, Dollars Australian Dollar [Member] Capital Unit, Class [Domain] Capital Unit, Class [Domain] Debt Securities, Trading, Unrealized Gain (Loss), Total Debt Securities, Trading, Unrealized Gain (Loss) Net change in unrealized trading appreciation/(depreciation) on investments in securities Unrealized trading gains on open futures contracts. Unrealized Trading Gains On Open Futures Contracts Net unrealized trading appreciation on open futures contracts Assets [Abstract] ASSETS Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Pledged Derivative, Collateral, Right to Reclaim Cash Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Pledged Entity Central Index Key CIK Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Guarantees [Abstract] Incentive fees Investment Company, Incentive Allocation to Average Net Assets, Percentage Cash received for the subscription of units. Proceeds From Subscriptions Proceeds from subscriptions Current Fiscal Year End Date Derivative [Table] Derivative [Table] Derivative Asset, Fair Value, Amount Offset Against Collateral Net Amount, Asset Increase (Decrease) in Accrued Liabilities, Total Increase (Decrease) in Accrued Liabilities Increase/(decrease) in accrued expenses and other liabilities Document Quarterly Report The net investment income (loss) allocated to the entity from its investment in the trading company. The net investment income (loss) is allocated based on the entity's pro-rated ownership of the trading company and includes items such as interest and brokerage commissions. It does not include allocated realized and unrealized gains or losses on investments. Net Investment Income Loss Allocated From Master Fund Net investment income/(loss) allocated from Man-AHL Diversified Trading Company L.P. Capital Units by Class [Axis] Capital Units by Class [Axis] Limited partner redemption notice period. Limited Partner Redemption Notice Period Period required for prior written notice by limited partners Fair Value, Inputs, Level 2 [Member] Level 2 [Member] Currency Swap [Member] Currencies [Member] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by/(used in) operating activities Entity Incorporation, State or Country Code General partner interest as minimum percentage of aggregate capital subscriptions. General Partner Interest As Minimum Percentage Of Aggregate Capital Subscriptions Percentage of investment by general partner Bank Of America Merrill Lynch [Member] Bank Of America Merrill Lynch [Member] Bank of America Merrill Lynch [Member] Payments for Purchase of Securities, Operating Activities Purchases of investments in securities Natwest. Natwest [Member] Natwest [Member] Investment, Type [Extensible Enumeration] Statement of Cash Flows [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] 1-5 Years [Member] Derivative Instruments One To Five Years Maturity Period Derivative Instruments One To Five Years Maturity Period [Member] Exchange-traded Number of contracts traded. Number Of Contracts Traded Exchange-traded futures contracts Condensed Financial Information Disclosure [Abstract] Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Summary Categorization of Trading Company's Investments Based on Level of Inputs Utilized Unrealized Gain (Loss) on Derivatives Net change in unrealized trading (appreciation)/depreciation on open contracts/agreements Net change in unrealized trading appreciation/(depreciation) on open contracts/agreements Number Of Classes Of Partnership Units Number Of Classes Of Partnership Units Number of classes of partnership units Fair Value Disclosures [Text Block] Fair Value Measurements Restricted cash Cash and cash equivalents - restricted Restricted Cash and Cash Equivalents, Total Restricted Cash and Cash Equivalent Credit Default Swap Buying Protections [member] Credit default swap buying protections. Credit Default Swap - Buy Protection [Member] Management Fee Expense Management fees Derivative, Remaining Maturity Derivative remaining maturity Forward Contracts - Metal non US Dollar [Member] Forward Contracts Metal Non US Dollar [Member] Forward contracts metal non us dollar. Derivative Contract [Domain] Derivative Contract [Domain] Other Cost and Expense, Operating Other expenses Futures contracts - long. Futures Contracts Long [Member] Futures Contracts—Long [Member] Counterparty Name [Axis] Counterparty Name [Axis] Number of Operating Segments Number of opertaing segment Net (gain) loss on trading activities and net investment (gain) loss allocated from Man-AHL Diversified Trading Company L.P. Net Change In Depreciation Appreciation Of Investment In Master Fund Net realized (gains)/losses and change in unrealized (appreciation)/depreciation on trading activities and net investment income/(loss) allocated from investment in Man-AHL Diversified Trading Company L.P. Accounting policies. Accounting Policies [Table] Accounting Policies [Table] Segment Reporting, Policy [Policy Text Block] Segment Reporting Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Total Unrealized Gain (Loss) on Derivatives and Commodity Contracts Net change in unrealized trading appreciation/(depreciation) on open contracts/agreements Other forward contracts. Other Forward Contracts [Member] Other [Member] Statement of Partners' Capital [Abstract] United States Treasury Bill Three Point Eight Seven Percentage Fifth November Two Thousand Twenty Six [Member] United states treasury bill three point eight seven percentage fifth november two thousand twenty six. United States Treasury Bill 3.87% 11/05/26 [Member] Investment Company, Total Return [Abstract] Total return: Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Payment for Incentive Fee Incentive fees incurred during the period Futures Contracts Appreciation Short [Member] Futures Contracts Appreciation Short. Net Asset Value Per Share Ending net asset value Beginning net asset value NET ASSET VALUE PER OUTSTANDING UNIT OF PARTNERSHIP INTEREST Document Type Document Type Investments holding. Investments Holding [Line Items] Investment Holdings [Line Items] Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Cash received from the redemption of units in the trading company. Sale Of Investment In Master Fund Sales of investments in Man-AHL Diversified Trading Company L.P. Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash Flows from Operating Activities Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Liabilities and Equity [Abstract] LIABILITIES AND PARTNERS' CAPITAL Subsequent Event [Member] Subsequent Event [Member] Operating Income (Loss) Net investment income/(loss) Cash paid for the redemption of units. Payments On Redemptions Payments on redemptions (net of change in redemptions payable) Due from master fund policy. Due From Master Fund [Policy Text Block] Due from Man-AHL Diversified Trading Company L.P. Credit spread on underlying basis points five [Member] Credit Spread On Underlying Basis Points Five [Member] Credit Spread in Basis Points 451+ [Member] Income Statement [Domain] Income Statement Location [Domain] Income Statement Domain Investment Holdings [Table] Summary of Investment Holdings [Table] Segment Reporting [Table] Fair value assets, level 1 to level 2 transfer, amount. Fair Value Assets Level 1 To Level 2 Transfer Amount Transfers between levels Asset Class [Domain] Asset Class [Domain] Entity File Number Accrued Liabilities and Other Liabilities Accrued expenses and other liabilities Futures Contracts. Futures Contracts [Member] Futures Contracts [Member] Guarantor Obligation [Table] Schedule of Guarantor Obligations [Table] Debt Instrument, Term Maturity period Entity Registrant Name Registrant Name Accounting Policies [Abstract] Citigroup. CitiGroup [Member] Citigroup [Member] CitiGroup [Member] Partners' Capital Account, Units Partners' capital, units Partners' capital, units Entity Address, Address Line One Guarantor Obligations [Line Items] Guarantor Obligations [Line Items] Futures Contracts Depreciation Short [Member] Futures Contracts Depreciation Short. Foreign cash balance at cost. Foreign cash balance at cost Foreign cash balance, cost United States Treasury Bill Three Point Eight Four Percentage Twenty First January Two Thousand Twenty Seven [Member] United states treasury bill three point eight four percentage twenty first january two thousand twenty seven. United States Treasury Bill 3.84% 01/21/2027 [Member] Man-AHL Diversified II L.P. Man AHL Diversified Two LP [Member] Man-AHL Diversified II L.P. [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Other Operating Income Other income Earnings Per Share, Policy [Policy Text Block] Net Income/(Loss) Per Unit Swap contracts short Swap Contracts Short [Member] Swap Agreements—Short [Member] Swap Agreements - Short [Member] Derivatives, Policy [Policy Text Block] Derivative Contracts Entity Small Business Tabular disclosure of the total fair value and notional amounts of credit default swaps. Schedule Of Credit Derivative Swap [Table Text Block] Fair Value and Notional Amounts of Credit Default Swaps New Zealand, Dollars New Zealand Dollar [Member] Investment Company Expenses Ratio Including Incentive Fees Investment company expenses ratio including incentive fees. Total expenses including incentive fees Unrealized trading gains losses on open swap contracts. Unrealized Trading Gains Losses On Open Swap Contracts Net unrealized trading depreciation on open swap agreements Significant Accounting Policies [Text Block] Significant Accounting Policies Common units minimum issuable value. Common Units Minimum Issuable Value Common units minimum issuable value BNP Paribas. BNP Paribas [Member] Due from Correspondent Brokers Due from brokers Contracts Receivable, Claims and Uncertain Amounts, Total Contracts Receivable, Claims and Uncertain Amounts Prior claims or losses pursuant to these contracts Investment, Policy [Policy Text Block] Investments in Securities Derivative Asset Net Amounts of Assets/Liabilities presented in the Statements of Financial Condition Partners' Capital [Abstract] PARTNERS' CAPITAL: Long Forward Contracts vs US Dollar [Member] Long Forward Contracts Vs US Dollar [Member] Long forward contracts vs uS dollar. Net asset value of class A series one and class B series one units. Net Asset Value Of Class A- Series One And Class B- Series One Units [Member] Net Asset Value of Class A Series 1 and Class B Series 1 Units [Member] Investment Company, Expense Ratio Excluding Incentive Fee Expenses before incentive fees Total expenses excluding incentive fees Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral, Total Derivative Liability, Fair Value, Amount Not Offset Against Collateral Gross Amounts of Recognized Liabilities Subsequent Event Type [Axis] Subsequent Event Type [Axis] Equity [Abstract] Unrealized trading gains losses on open forward contracts. Unrealized Trading Gains Losses On Open Forward Contracts Net unrealized trading depreciation on open forward contracts Credit Derivatives Contract Type [Axis] Credit Derivatives Contract Type [Axis] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash Flows from Financing Activities Consolidated Entities [Axis] Consolidated Entities [Axis] Derivative, Collateral, Right to Reclaim Securities Gross Amounts Not Offset in the Statements of Financial Condition, Financial Instruments, Liability Liabilities [Abstract] LIABILITIES: Credit Spread On Underlying Basis Points Four [Member] Credit Spread On Underlying Basis Points Four [Member] Credit Spread in Basis Points 351-450 [Member] Number Of Series Of Partnership Units Number Of Series Of Partnership Units Number of series of partnership units Entity Tax Identification Number Investment Holdings [Abstract] Investment Holdings [Abstract] South Africa, Rand South African Rand [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Entity Address, City or Town Limited Partners' Capital Account [Line Items] Limited Partners' Capital Account [Line Items] Increase (decrease) in servicing fees payable. Increase Decrease In Servicing Fees Payable Increase/(decrease) in servicing fees payable Energy. Energy [Member] Energy [Member] Investments, Fair Value Disclosure, Total Investments, Fair Value Disclosure Fair Value investment in securities Investments in securities, at fair value (cost: $105,935,461 and $89,559,842 as at September 30, 2026 and December 31, 2025, respectively) Entity Common Stock, Shares Outstanding Number of open credit default swap agreements. Number Of Open Credit Default Swap Agreements Number of open credit default agreements Partners' Capital Partners' capital Partners' capital Total partners' capital United States Treasury Bill 3.59% 02/26/26 [Member] United States Treasury Bill Three Point Five Nine Percentage Twenty Six February Two Thousand Twenty Six [Member] United states treasury bill three point five nine percentage twenty six february two thousand twenty six. Derivative, Collateral, Obligation to Return Cash Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Received Industry Sector [Domain] Investments by Secondary Categorization [Domain] Derivative Asset, Fair Value, Gross Asset Asset Derivatives, Fair Value Korea (South), Won South Korean Won [Member] Schedule of cash and cash equivalents and restricted cash. Schedule of Cash and Cash Equivalents and Restricted Cash [Table Text Block] Schedule of Cash and Cash Equivalents and Restricted Cash Number of units issued Limited Partners' Capital Account, Units Issued Unrealized trading gains on open forward contracts. Unrealized Trading Gains On Open Forward Contracts Net unrealized trading appreciation on open forward contracts Greated Than 5 Years [Member] Derivative Instruments Greater Than Five Years Maturity Period [Member] Derivative Instruments Greater Than Five Years Maturity Period Statement [Table] Statement [Table] United States Treasury Bill Zero Percentage Third April Two Thousand Twenty Five One [Member] United States Treasury Bill Zero Percentage Third April Two Thousand Twenty Five One [Member] United States Treasury Bill 0% 04/03/25 One [Member] Entity Shell Company Statement [Line Items] Statement [Line Items] 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] Due to Correspondent Brokers Due to brokers Schedule of gross notional value of derivative contracts. Schedule Of Gross Notional Value Of Derivative Contracts [Table Text Block] Schedule of Gross Notional Value of Derivative Contracts Maximum [Member] Maximum [Member] Maximum Futures Contracts Depreciation Long [Member] Futures Contracts Depreciation Long. Investment Owned, at Cost Cost of investment Partners' Capital Account, Units, Redeemed Redemptions, units United States Treasury Bill 0% 03/13/25 [Member] United States Treasury Bill Zero Percentage Thirteen March Two Thousand Twenty Five [Member] United States Treasury Bill Zero Percentage Thirteen March Two Thousand Twenty Five. Interest Expense, Trading Liabilities Interest expense - brokers General Partner [Member] General Partner [Member] Partners' Capital Account, Units, Contributed Subscriptions, units Credit Default Swap, Selling Protection [Member] Credit Default Swaps—Sell Protection [Member] Partner Type of Partners' Capital Account, Name [Domain] Partner Type of Partners' Capital Account, Name [Domain] Subsequent Events [Abstract] Equity in trading accounts. Equity In Trading Account Total equity in trading accounts Asset Class [Axis] Asset Class [Axis] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Liabilities, Fair Value Disclosure, Total Financial and Nonfinancial Liabilities, Fair Value Disclosure Total Liabilities, Fair Value Measurement Trading securities unrealized holding gain loss adjustment amount. Trading Securities Unrealized Holding Gain Loss Adjustment Amount Net change in unrealized trading (appreciation)/depreciation on investments in securities Derivative Liability, Fair Value, Amount Offset Against Collateral Net Amount, Liability Document Fiscal Year Focus Collateral balances - due to broker Collateralized Financings Collateralized Financings, Total Accretion (Amortization) of Discounts and Premiums, Investments Amortization of premiums/accretion of discount on securities and net realized (gain)/loss on securities Derivative, Collateral, Obligation to Return Securities Gross Amounts Not Offset in the Statements of Financial Condition, Financial Instruments, Asset Provisions For Income Taxes Provisions For Income Taxes Provision for income taxes Financial Instruments [Domain] Financial Instruments [Domain] Investment Company, Expense Ratio Including Incentive Fee Total expenses including incentive fees Total expenses including incentive fees Schedule of derivative contracts traded. Schedule Of Derivative Contracts Traded [Table Text Block] Schedule of Derivative Contracts Traded or Settled During Period United States Treasury Bill Zero Percentage Twenty Eight August Two Thousand Twenty Five [Member] United States Treasury Bill Zero Percentage Twenty Eight August Two Thousand Twenty Five [Member] United States Treasury Bill 0% 08/28/25 [Member] United States Treasury Bill 3.65% 01/22/26 [Member] United States Treasury Bill Three Point Six Five Percentage Twenty Two January Two Thousand Twenty Six [Member] United states treasury bill three point six five percentage twenty two january two thousand twenty six. United States Treasury Bill 0% 08/14/25 [Member] United States Treasury Bill Zero Percentage Eighth Fourteen Two Thousand Twenty Five [Member] United States Treasury Bill Zero Percentage Eighth Fourteen Two Thousand Twenty Five [Member] Restatement [Domain] Summary of Investment Holdings [Line Items] Summary of Investment Holdings [Line Items] Security Exchange Name Revenues, Total Revenues Total investment income Related Party [Axis] Related Party [Axis] Derivative, Gain (Loss) on Derivative, Net, Total Derivative, Gain (Loss) on Derivative, Net Net realized trading gains/(losses) on closed contracts/agreements Net realized trading gains/(losses) on closed contracts/ agreements and foreign currency transactions Entity Address, State or Province Swap Agreement Long [Member] Swap Contracts Long [Member] Swap contracts long. Short Forward Contracts vs US Dollar [Member] Short Forward Contracts Vs US Dollar [Member] Short forward contracts vs us dollar. Accounting policies. Accounting Policies [Line Items] Accounting Policies [Line Items] Forward Contracts [Member] Forward Contracts [Member] Forward contracts [Member] Cash And Cash Equivalents Maturity Description Cash And Cash Equivalents Maturity Description Cash and cash equivalents, maturity period Amendment Flag Amendment Schedule of Derivative Instruments [Table Text Block] Impact of Derivative Instruments on Statements of Operations United States Treasury Bill 0% 09/11/25 [Member] United States Treasury Bill Zero Percentage Eleventh September Two Thousand Twenty Five [Member] United States treasury bill zero percentage eleventh september two thousand twenty five [Member] Man AHL diversified trading company L P. Man Ahl Diversified Trading Company L P [Member] Man-AHL Diversified Trading Company L.P. [Member] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents CASH AND CASH EQUIVALENTS AND RESTRICTED CASH - Beginning of the period CASH AND CASH EQUIVALENTS AND RESTRICTED CASH - End of the period Total cash and cash equivalents and restricted cash Investment Company, Financial Highlights [Roll Forward] Per unit operating performance: City Area Code General Partners' Capital Account, Total General Partners' Capital Account General Partner General partner investment amount Natwest f/k/a Royal Bank of Scotland[Member] Natwest Formerly Known As Royal Bank of Scotland[Member] Natwest formerly known as royal bank of scotland. Organization, Consolidation and Presentation of Financial Statements [Abstract] Premiums Paid On Derivative Instruments Premiums Paid On Derivative Instruments Net premiums paid on credit default swap agreements Premiums paid on credit default swap agreements Weighted Average Limited Partnership Units Outstanding, Basic WEIGHTED AVERAGE NUMBER OF UNITS OUTSTANDING DURING THE PERIOD Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] United States Treasury Bill Zero Percentage Twenty Seven Febraury Two Thousand Twenty Five [Member] United States Treasury Bill Zero Percentage Twenty Seven Febraury Two Thousand Twenty Five. United States Treasury Bill 0% 02/27/25 [Member] Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net Net realized gains/(losses) and change in unrealized appreciation/(depreciation) on trading activities Operating Expenses [Abstract] PARTNERSHIP EXPENSES: Redemptions Redemptions Partners' Capital Account, Redemptions Professional Fees Partnership Expenses Professional Fees Partnership Expenses Professional fees Forward Contracts - Cross Currencies - Appreciation [Member] Forward Contracts - Cross Currencies - Appreciation [Member] Forward Contracts - Cross Currencies - Appreciation. Cash and cash equivalents and restricted cash abstract. Cash and Cash Equivalents and Restricted Cash [Abstract] Disclosure of accounting policy for recording various expenses incurred. Expenses [Policy Text Block] Expenses Segment Reporting Segment Reporting [Text Block] Disclosure of accounting policy for investments in financial assets, including Trading Company, marketable securities (debt and equity securities with readily determinable fair values). For marketable securities, the disclosure may include the entity's accounting treatment for transfers between investment categories and how the fair values for such securities are determined. The Partnership's investment in Trading Company is valued at fair value at the Partnership's proportionate interest in the net assets of the Trading Company. Investment In Master Fund [Policy Text Block] Investment in Man-AHL Diversified Trading Company L.P. Derivative Instruments and Hedging Activities Disclosure [Abstract] Trading Symbol Professional fees expenses. Professional Fees Expenses Professional fees Investments holding. Investments Holding [Table] Investment Holdings [Table] Mexican Unidad de Inversion (UDI) (funds code) Mexican Peso [Member] Common units minimum redeemable value. Common Units Minimum Redeemable Value Common units minimum redeemable value Subsequent Event [Table] Subsequent Event [Table] Entity Emerging Growth Company Investment Company, Total Return before Incentive Fees Total return before incentive fees Common units minimum outstanding value. Common Units Minimum Outstanding Value Common units minimum outstanding value Schedule of cash and cash equivalents and restricted cash table. Schedule of Cash and Cash Equivalents and Restricted Cash [Table] US Treasury Securities [Member] Treasury Bills [Member] Restatement [Axis] Cover Cover [Abstract] Servicing fees payable. Servicing Fees Payable Servicing fees payable General partner ownership interest. General Partner Ownership Interest Direct interest owned by General Partner Number of swap contracts Derivative asset number of instrument settled. Derivative Asset Number Of Instrument Settled Swap agreements Currencies. Currencies [Member] Currencies [Member] Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities: Fair Value Disclosures [Abstract] Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalent Cash and cash equivalents Cash and cash equivalents - unrestricted Limited Partner [Member] Limited Partners [Member] This item represents the investment in the trading company as of balance sheet date. The investment in the trading company is carried at fair value based on the entity's proportionate interest in the net assets of the trading company. The performance of the entity is directly affected by the performance of the trading company. Investment In Master Fund Investment in Man-AHL Diversified Trading Company L.P. Increase (Decrease) in Receivables from Brokers-Dealers and Clearing Organizations Due from brokers (Increase)/decrease in due from brokers Increase/(decrease) in collateral balances - due to broker Increase (Decrease) in Collateral Balances Due to Broker Increase (decrease) in collateral balances due to broker. Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by/(used in) financing activities Offsetting Assets [Table Text Block] Schedule of Additional Disclosures Regarding Offsetting of Derivative Assets Investment Company, Financial Highlights [Table] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Entity Filer Category Investment Company, Financial Highlights [Abstract] Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Percentage of incentive fee charged by Advisor as defined in the Limited Partnership Agreement. Percentage Of Partners Capital Incentive Fee Percentage of incentive fees charge by Advisor United States Treasury Bill Three Point Five Eight Percentage Fifth February Two Thousand Twenty Six [Member] United states treasury bill three point five eight percentage fifth february two thousand twenty six. United States Treasury Bill 3.58% 02/05/26 [Member] Limited Partners' Capital Account, Total Limited Partners' Capital Account Limited Partners Investment Owned, Fair Value, Ending Balance Investment Owned, Fair Value, Beginning Balance Investment Owned, at Fair Value Credit default swaps, Fair Value Fair Value Derivative Liability, Fair Value, Gross Liability Liability Derivatives, Fair Value Capital Unit, Class A [Member] Class A Series 1 [Member] Segment Reporting [Abstract] Entity Address, Postal Zip Code Statement of Financial Position [Abstract] Local Phone Number President and vice president. President and Vice President [Member]