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Statement - Consolidated Statements of Operations (Unaudited) link:presentationLink link:calculationLink link:definitionLink 75070 - Statement - Consolidated Statements of Changes in Members' Capital link:presentationLink link:calculationLink link:definitionLink 75080 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 995480 - Disclosure - Organization and Basis of Presentation link:presentationLink link:calculationLink link:definitionLink 995490 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995500 - Disclosure - Investment Valuations and Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 995510 - Disclosure - Agreements and Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 995520 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 995530 - 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Disclosure - Organization and Basis of Presentation - Schedule of Aggregate Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 995720 - Disclosure - Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995730 - Disclosure - Investment Valuations and Fair Value Measurements - Summary of Major Security Type of Fair Valuations (Details) link:presentationLink link:calculationLink link:definitionLink 995740 - Disclosure - Investment Valuations and Fair Value Measurements - Summary of Reconciliation of Balances for Total Investments (Details) link:presentationLink link:calculationLink link:definitionLink 995750 - Disclosure - Investment Valuations and Fair Value Measurements - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995760 - Disclosure - Investment Valuations and Fair Value Measurements - Summary of Valuation Techniques and Quantitative Information (Details) link:presentationLink link:calculationLink link:definitionLink 995770 - Disclosure - Agreements and Related Party Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995780 - Disclosure - Commitments and Contingencies - Schedule of Unfunded Commitments and Unrealized Depreciation by Investment (Details) link:presentationLink link:calculationLink link:definitionLink 995790 - Disclosure - Commitments and Contingencies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995800 - Disclosure - Members Capital - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995810 - Disclosure - Members Capital - Summary of Company Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 995820 - Disclosure - Credit Facility - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995830 - Disclosure - Credit Facility - Summary Information Regarding Credit Facility (Details) link:presentationLink link:calculationLink link:definitionLink 995840 - Disclosure - Repurchase Transactions - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995850 - Disclosure - Income Taxes - Schedule of Aggregate Investment Unrealized Appreciation and Depreciation for Federal Income Tax Purposes (Details) link:presentationLink link:calculationLink link:definitionLink 995860 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995870 - Disclosure - Segment Reporting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 995880 - Disclosure - Unconsolidated Significant Subsidiaries - Summarized Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 995890 - Disclosure - Financial Highlights - Schedule of Net Asset Value Per Unit and Reflects all Units Issued and Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 995900 - Disclosure - Financial Highlights - Schedule of Net Asset Value Per Unit and Reflects all Units Issued and Outstanding (Parenthetical) (Details) link:presentationLink link:calculationLink link:definitionLink 995910 - Disclosure - Subsequent Events - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink Line of credit facility weighted average interest rate. Line of Credit Facility Weighted Average Interest Rate Weighted average interest rate Line of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Related Party Transaction [Table] Schedule Of Related Party Transactions By Related Party [Table] Schedule of Capital Units [Table Text Block] Schedule of Aggregate Commitments, Undrawn Commitments, Percentage of Commitments Funded and Number of Subscribed for Units Percentage of management fee on aggregate cost basis. Percentage Of Management Fee On Aggregate Cost Basis Percentage of management fee on aggregate cost basis Gross Profit Gross Profit, Total Gross profit Dividend Income, Operating, Total Dividend Income, Operating Dividend income Credit Facility Debt Disclosure [Text Block] Amended Credit Agreement. Amended Credit Agreement [Member] Amended Credit Agreement Long-Term Line of Credit Credit facility payable Long-Term Line of Credit, Total Debt Instrument, Basis Spread on Variable Rate Basis spread on variable rate Common Unitholders' undrawn commitment: (18,034,649 units issued and outstanding) Common Unitholders Undrawn Commitments Value Common unitholders undrawn commitments value. Common Unitholders' undrawn commitment: (18,034,649 units issued and outstanding) Commitments and Contingencies Commitments and Contingencies (Note 5) Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Units outstanding, diluted Industry Sector [Axis] Schedule of unfunded commitments and unrealized depreciation by investment. Schedule Of Unfunded Commitments And Unrealized Depreciation By Investment [Table Text Block] Schedule of Unfunded Commitments and Unrealized Depreciation by Investment Realized Gain (Loss), Investment and Derivative, Operating, before Tax Realized Gain (Loss), Investment and Derivative, Operating, before Tax, Total Net realized loss Net realized loss on investments Minimum [Member] Minimum Investment Company, Contractual Fee Waived Investment Company, Contractual Fee Waived, Total Expenses waived by the Adviser Commitment obligation per share. Commitment Obligation Per Share Commitment obligation per unit Repurchase Agreement, Date Repurchase agreement date Summary of significant accounting policies. Summary of Significant Accounting Policies [Line Items] Other Expenses Other expenses Investment, Variable Interest Rate, Type [Extensible Enumeration] US Treasury Bill Securities [Member] U.S. Treasury Bill Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Net change in unrealized appreciation/(depreciation) Aggregate cumulative invested amount in existing portfolio companies Aggregate Cumulative Invested Amount In Existing Portfolio Companies Aggregate cumulative invested amount in existing portfolio companies. Number of loans contribution. Number Of Loans Contribution Number of loans contribution Related Party Transaction [Line Items] Related Party Transaction [Line Items] Investment company internal rate of return for common unitholders after management fees financing costs and operating expenses. Investment Company Internal Rate Of Return For Common Unitholders After Management Fees Financing Costs And Operating Expenses Ratio of internal rate of return for common unitholders Common Unitholder, % of Commitments Funded Percentage of commitment funded. Percentage Of Commitment Funded Deferred tax liability Deferred Tax Liabilities, Net Deferred Tax Liabilities, Net, Total Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Repayments of Lines of Credit Repayments of credit facility Non Qualifying Assets Non-qualifying assets Non-qualifying assets. Director Fee Directors’ fees Line of Credit Facility, Maximum Borrowing Capacity Maximum commitment Short Term Investments Fair Value Short term investments fair value. Short-term Investments, Fair Value Subsequent Event Type [Domain] Income Tax Examination, Year under Examination Examination regarding return filed Schedule of reclassifications for permanent difference between book and tax accounting. Schedule Of Reclassifications For Permanent Difference Between Book And Tax Accounting [Table Text Block] Schedule of Reclassifications for Permanent Difference Between Book and Tax Accounting Line of Credit Facility, Fair Value of Amount Outstanding Amounts outstanding under Credit Facility Average outstanding balance Valuation, Income Approach [Member] Income Method Investment Company, Contributed Capital to Committed Capital Ratio Capital commitments percentage Percentage of preferred and common equity ownership Investment Maturity Date Maturity Date Debt instrument extended maturity date. Debt Instrument Extended Maturity Date Extended maturity date Investment Company, Tax Return of Capital Distribution, Per Share Return of capital Return of capital Income Statement [Abstract] Fair value measurement with unobservable inputs reconciliation recurring basis asset purchases including payments received in kind. Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Including Payments Received In Kind Purchases, including payments received in-kind Common Unitholder, Undrawn Commitments Common unitholders undrawn commitment value. Common Unitholders Undrawn Commitment Value Common Unitholders’ undrawn commitment: (20,134,698 units issued and outstanding) Income Tax Jurisdiction [Axis] Income Tax Authority Acquisition Date Investment, Acquisition Date Debt Instrument, Measurement Input Related and Nonrelated Parties [Domain] Related Party Investment Income, Operating, after Expense and Tax Net investment income Net investment income Earnings Per Share, Basic Earnings Per Share, Basic, Total (Loss) income per unit, basic Document Period End Date Percentage of restricted securities on net assets Restricted Investments Percent of Total Assets Restricted investments percent of total assets. Hotels, Restaurants & Leisure Hotels Restaurants and Leisure [Member] Hotels Restaurants and Leisure. Investment Owned, Balance, Shares Shares Interest payable and line of credit facility commitment expense payable. Interest Payable And Line Of Credit Facility Commitment Expense Payable Interest and credit facility expense payable Extended term of subscription agreements thereafter. Extended Term of Subscription Agreements Thereafter Extended term for successive periods of subscription agreements Investment Company, Financial Ratios [Abstract] Ratios and Supplemental Data: Statement of Stockholders' Equity [Abstract] Debt Securities [Member] Debt Disclosure of Repurchase Agreements [Abstract] Repurchase agreement, date of repurchase Repurchase Agreement, Date of Repurchase Equity Method Investments and Joint Ventures [Abstract] Investments [Domain] Investments Cash Equivalents Percent Of Net Assets Cash equivalents percent of net assets. Cash Equivalents - % of Net Assets Assets Total assets Total Assets Title of 12(b) Security Revenue Recognition, Interest [Policy Text Block] Income Recognition Schedule of Equity Method Investments [Line Items] Cash and Cash Equivalents [Member] Cash Equivalents Related Party Transaction [Axis] Related Party Transaction Partners' Capital Account, Contributions Deemed distributions and contributions Repurchase obligation outstanding Repurchase Obligation Outstanding Repurchase Obligation Outstanding. Variable Rate [Axis] Variable Rate Interest Paid, Excluding Capitalized Interest, Operating Activity Interest expense paid Common Commitment Common commitment member Common Commitment [Member] Investment valuations and fair value measurements. Investment Valuations And Fair Value Measurements [Text Block] Investment Valuations and Fair Value Measurements Measurement input indicative bid. Measurement Input Indicative Bid [Member] Indicative Bid Investment Company, Investment Income (Loss), Per Share, Basic Net investment income Cash and Cash Equivalents [Domain] Members' Equity Notes Disclosure [Text Block] Members Capital Advisory agreement effective period. Advisory Agreement Effective Period Advisory agreement effective period Federal Income Tax Note [Table Text Block] Schedule of Aggregate Investment Unrealized Appreciation and Depreciation for Federal Income Tax Purposes Investment Owned And Short Term Investment Percent Of Net Assets Investment owned and short term investment percent of net assets. Short-term Investments - % of Net Assets Valuation Approach and Technique [Domain] Valuation Approach and Technique Investment, Issuer Affiliation [Domain] Percentage Of Minimum Qualifying Assets Percentage of minimum qualifying assets. Percentage of minimum qualifying assets Income Tax Disclosure [Text Block] Income Taxes Investment Company, Expense Ratio before Incentive Allocation Ratio of total expenses to average net assets Income Tax Jurisdiction, Domestic State and Local [Member] State Weighted Average [Member] Weighted Average Investment Company, Internal Rate of Return since Inception Common Unitholder IRR Par Amount Investment Owned, Balance, Principal Amount Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Repurchase Obligations Repurchase Obligations, Policy [Policy Text Block] Repurchase obligations, policy. Segment Reporting, Expense Information Used by CODM, Type [Extensible Enumeration] Investment [Table Text Block] Summary by Major Security Type of Fair Valuation According to Inputs Used in Valuing Investments Pharmaceuticals. Pharmaceuticals [Member] Pharmaceuticals Investment Owned At Cost Short Term Investment And Cash Equivalents Carrying Value Investment owned at cost short term investment and cash equivalents carrying value. Total Investments, Amortized Cost Percentage of reduction of overall remaining available capital commitments. Percentage of Reduction of Overall Remaining Available Capital Commitments Percentage of reduction of overall remaining available capital commitments Portfolio turnover rate Investment Company, Portfolio Turnover Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Summary of Reconciliation of Balances for Total Investments Geographical [Domain] Maturity Date Warrants and Rights Outstanding, Maturity Date Warrants and Rights Outstanding, Maturity Date Non-cash sales of investments due to reorganization Non Cash Sales of Investments Due to Reorganization Non cash sales of investments due to reorganization. Investments in and advances To affiliates dividends or interest or other income. Investments In And Advances To Affiliates Dividends Or Interest Or Other Income Interest/Dividend/ Other income Statistical Measurement [Axis] Statistical Measurement Units outstanding, end of period Common unitholder's commitment units outstanding Common Unitholder, Units Units at beginning of period Units issued and committed at end of period Investment Company [Abstract] Investment Company, Distribution to Shareholders, Per Share Total distributions Total distributions Investment, Tax Basis, Cost Cost of investments for federal income tax purposes Liabilities Total liabilities Total Liabilities Investment company asset coverage ratio. Investment Company Asset Coverage Ratio Asset coverage ratio Purchases of short-term investments. Purchases Of Short Term Investments Purchases of short-term investments (Increase) decrease in receivable for investments sold Increase (Decrease) in Receivable for Investment Sold Realized gain on short term investments Realized gain on short term investments. Realized gain on short-term investments Significantly investment completion period upon expiration of commitment period. Significantly Investment Completion Period Upon Expiration Of Commitment Period Significantly investment completion period upon expiration of commitment period Short-Term Investments [Member] Short-Term Investments Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Total Accumulated overdistributed earnings Eighth Amended Credit Agreement [Member] Eighth amended credit agreement. Eighth Amended Credit Agreement Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 3 Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair value measurement asset by investment type amortization of premium and accretion of discounts net. Fair Value Measurement Asset By Investment Type Amortization Of Premium And Accretion Of Discounts Net Amortization of premium and accretion of discount, net Household durables. Household Durables [Member] Household Durables Zions Bancorporation, N.A. Zions Bancorporation N A [Member] Zions Bancorporation, N.A. Investment Company, Gain (Loss) on Investment, Per Share Net realized and unrealized loss Debt Related Commitment Fees and Debt Issuance Costs Financing costs incurred Total Investments, Fair Value Investment Owned Short Term Investment And Cash Equivalents Fair Value Investment owned short term investment and cash equivalents fair value. Unrealized depreciation on unfunded commitments Unrealized Depreciation On Unfunded Commitments Unrealized depreciation on unfunded commitments. Unrealized Depreciation Stock Issued During Period, Shares, New Issues Number of units sold and issued Investment company ratio of net expenses to average net assets. Investment Company Ratio Of Net Expenses To Average Net Assets Ratio of net expenses to average net assets Restricted Investments, at Fair Value Aggregate fair value on restricted securities Investment Company, Investment Income (Loss) from Operations, Per Share [Abstract] Income from Investment Operations: Investment Company, Investment Income (Loss) Ratio Ratio of net investment income to average net assets Long-Term Purchase Commitment, Amount Total capital commitment investment Investments in and advances to affiliates at fair value net change in unrealized appreciation (depreciation). Investments In And Advances To Affiliates At Fair Value Net Change in Unrealized Appreciation (Depreciation) Net Change in Unrealized Appreciation/ (Depreciation) Variable Rate [Domain] Variable Rate Investment, Tax Basis, Unrealized Loss Unrealized depreciation Related Party Transactions [Abstract] Common Unitholders' offering costs Common Unitholders' offering costs Common Unitholders Offering Cost Common unitholders offering cost. Strategic venture member Strategic Venture [Member] Strategic Venture Investment Company, Financial Highlights [Table Text Block] Schedule of Net Asset Value Per Unit and Reflects all Units Issued and Outstanding Income Tax, Policy [Policy Text Block] Income Taxes Subsequent Events [Text Block] Subsequent Events Other Income Other fee income Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV Advisory Agreement Expiration Date Advisory agreement expiration date. Advisory agreement expiration date Interest income paid-in-kind Interest Income, Operating, Paid in Kind Interest income paid in-kind Repurchase Transactions Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] Line of Credit Facility, Remaining Borrowing Capacity Available Commitment Debt instrument maturity date to be extended upon satisfaction of certain conditions. Debt Instrument Maturity Date To Be Extended Upon Satisfaction Of Certain Conditions Maturity date to be extended upon satisfaction of certain conditions Investment Owned, Net Assets, Percentage % of Net Assets Prepaid Expense and Other Assets Prepaid and other assets Base Rate Base Rate [Member] Investments in and Advances to Affiliates, at Fair Value, Gross Additions Gross Addition Gain (Loss), Investment and Derivative, Operating, before Tax Net realized and unrealized loss on investments Income tax. Income Tax [Table] Income Tax [Table] Proceeds from secured borrowing Proceeds from Secured Lines of Credit Percentage of advisor incentive fee entitled. Percentage Of Advisor Incentive Fee Entitled Percentage of advisor incentive fee entitled Realized Gain (Loss), Investment and Derivative, Operating, after Tax Net realized gain (loss) on investments Net realized loss on investments Investments, Fair Value Disclosure [Abstract] Investments, at fair value Liabilities and Equity Total Liabilities and Members’ Capital Basis points of aggregate capital commitments. Basis Points of Aggregate Capital Commitments Basis points of aggregate capital commitments Investment, Basis Spread, Variable Rate Investment interest, basis spread variable rate Document Fiscal Period Focus Industrial conglomerates. Industrial Conglomerates [Member] Industrial Conglomerates Organization and Basis of Presentation [Table] Organization and Basis of Presentation. Investment valuations and fair value measurements. Investment Valuations And Fair Value Measurements [Abstract] (Increase) decrease in interest income receivable Increase (Decrease) in Accrued Interest Receivable, Net Commitment period description. Commitment Period Description Commitment period description Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Net decrease in cash and cash equivalents Entity Current Reporting Status Use of Estimates, Policy [Policy Text Block] Use of Estimates Investment, Tax Basis, Unrealized Gain Unrealized appreciation Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 Class of Stock [Domain] Class of Stock Other Accrued Liabilities Other accrued expenses and other liabilities Investment Company, Financial Highlights [Text Block] Financial Highlights Investment Type [Axis] Investment Type Financial Instrument [Axis] Assets, Fair Value Disclosure Investments Fair Value, Total Investment, fair value Document Transition Report Commitments and Contingencies Disclosure [Abstract] Subsequent Event [Line Items] Subsequent Event [Line Items] Gross Reduction Investments in and Advances to Affiliates, at Fair Value, Gross Reductions Term of subscription agreements. Term of Subscription Agreements Term of subscription agreements Total expenses Investment Income, Investment Expense Payable, Investment, Purchase Payable for short-term investments purchased Investment Company, Investment Income (Loss) from Operations, Per Share Total loss from investment operations Line of Credit Facility, Commitment Fee Amount Undrawn commitment fees Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Ending Balance Beginning Balance Debt, Weighted Average Interest Rate Weighted average interest rate Common Stock Common Stock [Member] Common Stock Proceeds from Lines of Credit Proceeds from credit facility Proceeds from Lines of Credit, Total Statistical Measurement [Domain] Statistical Measurement Schedule of members capital unit activity. Schedule Of Members Capital Unit Activity [Table Text Block] Summary of Company Unit Activity Security Owned and Sold, Not yet Purchased Fair Value, Security Name [Domain] Security Owned and Sold, Not yet Purchased Fair Value, Security Name Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Units outstanding, basic Assets [Abstract] Assets Entity Central Index Key Line of Credit Facility [Table] Line Of Credit Facility [Table] Current Fiscal Year End Date Increase (Decrease) in Accrued Liabilities Increase (decrease) in other accrued expenses and liabilities Increase (Decrease) in Accrued Liabilities, Total Document Quarterly Report Debt Instrument, Maturity Date Maturity date Cash and Cash Equivalents [Axis] Maximum percentage of commitment or assets computed annually for expenses. Maximum Percentage Of Commitment Or Assets Computed Annually For Expenses Maximum percentage of commitment or assets computed annually for company expenses Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 2 Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash (used in) provided by operating activities Entity Incorporation, State or Country Code Earnings Per Share, Diluted Earnings Per Share, Diluted, Total (Loss) income per unit, diluted Security Owned and Sold, Not yet Purchased, at Fair Value [Axis] Security Owned and Sold, Not yet Purchased, at Fair Value Net (decrease) increase in Members' Capital from operations Other Than Government Securities [Member] Other Than Government Securities Other Than Government Securities. Equity Method Investments [Table Text Block] Unconsolidated Significant Subsidiaries Administrative fees Administrative Fees Expense Deemed re-contributions Members Capital Deemed Contributions Members capital deemed contributions. First American Government Obligation Fund. First American Government Obligation Fund [Member] First American Government Obligation Fund Net Increase (Decrease) in Members' Capital Resulting from Operations: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract] Investment valuations and fair value measurements. Investment Valuations And Fair Value Measurements [Table] Investment Valuations And Fair Value Measurements [Table] Income Tax Jurisdiction [Domain] Income Tax Authority Net unrealized depreciation on investments Investment, Tax Basis, Unrealized Gain (Loss) Adjustments Due To Reduction Of Undrawn Commitments Per Share Adjustment due to reduction of undrawn commitments Adjustments Due To Reduction Of Undrawn Commitments Per Share Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Organization and Basis of Presentation Equity Components [Axis] Equity Components Investment Company, Total Return Common Unitholder Total Return Investment Unfunded Commitments Investment Type Unfunded commitments investment type. Repayments of Secured Debt Payment to secured borrowing Statement of Cash Flows [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Income Tax Disclosure [Abstract] Re-contribute amount distribution percentage. Recontribute Amount Distribution Percentage Recontribute amount distribution percentage Short-term investments. Short Term Investments [Policy Text Block] Short-term Investments Increase (Decrease) in Prepaid Expense and Other Assets (Increase) decrease in prepaid and other assets Investment, Issuer Name [Domain] Percentage of Paid in Kind Investment Income Percentage of paid in kind investment income. Percentage of PIK interest income Interest and Debt Expense Interest and credit facility expenses Total Members' Capital, end of period Members' Equity Commitments Total Members’ Capital Members' Capital Beginning Balance Members' Capital Ending Balance Management Fee Expense Management fees Investment Interest Rate Investment interest rate Interest Rate Floor Interest Rate Floor [Member] Metals and mining. Metals And Mining [Member] Metals & Mining Members capital deemed distributions. Deemed distributions Members Capital Deemed Distributions Class of Stock Schedule of tax character of shareholder distributions. Schedule Of Tax Character Of Shareholder Distributions [Table Text Block] Schedule of Tax Character of Shareholder Distributions Organizational and offering costs. Organizational And Offering Costs [Policy Text Block] Organizational and Offering Costs Investment Company Distributions from Net Investment Income Per Share Investment company distributions from net investment income per share. From net investment income Number of Operating Segments Number of operating segment Deferred Charges, Policy [Policy Text Block] Deferred Financing Costs Prime rate and floating LIBOR rate. Prime Rate And Floating L I B O R Rate [Member] Prime Rate and Floating LIBOR Rate Commercial paper rate. Commercial Paper Rate [Member] Commercial Paper Rate Interest Receivable Interest receivable Interest income receivable Schedule of tax components of distributable earnings. Schedule Of Tax Components Of Distributable Earnings [Table Text Block] Schedule of Tax Components of Distributable Earnings Increase (Decrease) in Payable for Investment Purchased Increase (decrease) in payable for short-term investments purchased Measurement Input, Discount Rate [Member] Discount Rate Increase (decrease) in interest and credit facilities expense payable. Increase Decrease In Interest And Credit Facilities Expense Payable Increase (decrease) in interest and credit facility expense payable Net Asset Value Per Unit (accrual base), End of Period Net Asset Value Per Unit (accrual base), Beginning of Period Net Asset Value Per Unit (accrual base) (Note 12) Incentive fee one. Incentive Fee One [Member] First Document Type Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Management and Service Fees, Rate Percentage of management fee Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash Flows from Operating Activities Impact of individual member's percentage Percentage Of Impact Of Each Member Capital Commitments Percentage of impact of each member capital commitments. Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Equity Method Investment [Table] Subsequent Event Subsequent Event [Member] Lender Name [Axis] Lender Name Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] Fair value assets liabilities transfer between levels. Fair Value Assets Liabilities Transfer Between Levels Fair value assets liabilities transfer between levels Percentage of portfolio breakdown on investment. Percentage of Portfolio Breakdown on Investment Percentage of portfolio breakdown on investment 'Return of capital Investment Company, Tax Return of Capital Distribution Entity File Number Investment, Issuer Affiliation [Axis] Income Tax Jurisdiction, Domestic Federal [Member] U.S. federal Retained Earnings [Member] Accumulated Undistributed (Overdistributed) Earnings Reduction in undrawn commitments per share. Reduction in Undrawn Commitments Per Share Reduction in undrawn commitments Number of wholly-owned subsidiaries Number Of Subsidiaries Owned Number of subsidiaries owned. Entity Registrant Name Accounting Policies [Abstract] Repurchase Agreements, Average Principal Amount Repurchase agreements, average principal amount. Repurchase agreements, average principal amount Transactions. Transactions Transactions [Policy Text Block] Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total Net (decrease) increase in net assets resulting from operations Net (loss) income Net Assets Net Assets, Ending Balance Net Assets, Beginning Balance Net Assets Advisory agreement additional effective period Advisory Agreement Additional Effective Period Advisory agreement additional effective period. Entity Address, Address Line One UNITED STATES United States Contingencies Disclosure [Text Block] Commitments and Contingencies Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement Net expenses Expenses waived by Investment Adviser Investment company ratio of expenses waived by investment adviser. Investment Company Ratio of Expenses Waived by Investment Adviser Loss Contingencies [Line Items] Loss Contingencies [Line Items] Payments of Financing Costs Payments of Financing Costs, Total Deferred financing costs paid Investments in and advances to affiliates, at fair value, realized gains (losses). Investments In And Advances To Affiliates At Fair Value Realized Gains Losses Realized Gains (Losses) Related Party Transactions Disclosure [Text Block] Agreements and Related Party Transactions Accumulated Common Unitholders' tax reclassification Accumulated Common Unitholders' tax reclassification Accumulated Common Unitholders Tax Reclassifications Accumulated common unitholders’ tax reclassifications. Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax Net change in unrealized appreciation/(depreciation) on investments Entity Small Business Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount Unfunded Commitments Amount Proceeds from sales of short-term investments. Proceeds From Sales Of Short Term Investments Proceeds from sales of short-term investments Incentive fee two. Incentive Fee Two [Member] Second Interest income Interest Income (Expense), Operating Interest Income (Expense), Operating, Total Significant Accounting Policies [Text Block] Significant Accounting Policies Percentage of remaining incentive fee. Percentage Of Remaining Incentive Fee Percentage of remaining incentive fee Increase (Decrease) in Operating Assets [Abstract] Increase (decrease) in operating assets and liabilities: Administrative Agreement Additional Effective Period Administrative Agreement Additional Effective Period Interest expense on repurchase transactions Repurchase Agreements, Interest Expense Amount Equity Method Investments and Joint Ventures Disclosure [Text Block] Unconsolidated Significant Subsidiaries Equity securities one. Equity Securities One [Member] Equity Gross Investment Income, Operating Total investment income Investment, Policy [Policy Text Block] Investments Net Assets Percent of Net Assets Net assets percent of net assets. Net Assets - % of Net Assets Percentage of additional distributable paid to advisor incentive fee. Percentage Of Additional Distributable Paid To Advisor Incentive Fee Percentage of additional distributable paid to advisor incentive fee Investment, Issuer Name [Axis] Average outstanding balance Line of Credit Facility, Average Outstanding Amount Subsequent Event Type [Axis] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash Flows from Financing Activities Amortization of Debt Discount (Premium) Amortization of premium and accretion of discount, net Members' Capital Members’ Capital, end of year Common Unitholders’ capital Investment, Affiliated Issuer, Noncontrolled [Member] Non-Controlled Affiliated Investments Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender Third amended and restated revolving credit agreement. Third Amended And Restated Revolving Credit Agreement [Member] Third Amended and Restated Revolving Credit Agreement Inception date Liabilities [Abstract] Liabilities Members' Equity [Abstract] Members’ Capital Entity Tax Identification Number Valuation Approach and Technique [Axis] Valuation Approach and Technique Equity Component [Domain] Equity Component Entity Address, City or Town Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales And Paydowns Of Investments Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales And Paydowns Of Investments Sales and paydowns of investments Investment company internal rate of return since inception after management fees, financing costs and operating expenses. Investment Company Internal Rate Of Return Since Inception After Management Fees Financing Costs And Operating Expenses Ratio of internal rate of return since inception for common unitholders Measurement Input Type [Domain] Measurement Input Type Repurchase Agreements, Weighted Average Interest Rates Repurchase agreements, weighted average interest rates. Repurchase agreements, weighted average interest rates Stock Issued During Period, Value, New Issues Aggregate purchase price Sixth Amended Credit Agreement [Member] Sixth Amended Credit Agreement [Member] Sixth Amended Credit Agreement Investments, Fair Value Disclosure Investments, Fair Value Disclosure, Total Fair Value Third Amended Credit Agreement. Third Amended Credit Agreement [Member] Third Amended Credit Agreement Entity Common Stock, Shares Outstanding Schedule of Debt [Table Text Block] Summary Information Regarding Credit Facility Equity Securities, FV-NI, Measurement Input Equity securities, measurement input Credit agreement. Credit Agreement [Member] Credit Agreement Seventh Amended Credit Agreement [Member] Seventh Amended Credit Agreement [Member] Seventh Amended Credit Agreement Commitments from investors units Commitments From Investors Units Commitments from investors units. Line of credit facility option to increase maximum borrowing capacity. Line Of Credit Facility Option To Increase Maximum Borrowing Capacity Option to increase maximum borrowing capacity Segment Reporting, Expense Information Used by CODM, Description Common Unitholders' return of capital Common Unitholders' return of capital Common Unitholders Returns of Capital Common unitholders returns of capital. Industry Sector [Domain] Administrative Agreement Expiration Date Administrative Agreement Expiration Date Statement [Table] Statement [Table] Incentive Fee Expense Incentive fee Net realized gain on short-term investments Net Realized Gain On Short Term Investments Net realized gain on short-term investments. Ruby Tuesday Operations LLC. Ruby Tuesday Operations L L C [Member] Ruby Tuesday Operations LLC Entity Shell Company Valuation, Market Approach [Member] Market Method Statement [Line Items] Statement [Line Items] Investment Company, Distribution to Shareholders [Abstract] Distributions to Members from: Investment, Unaffiliated Issuer [Member] Non-Controlled/Non-Affiliated Investments Maximum [Member] Maximum Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Net realized losses Debt Disclosure [Abstract] Investment Owned, Cost Amortized Cost Cash Equivalents at Fair Value Cash equivalents at fair value. Cash Equivalents, Fair Value Income tax examination returns filed. Income Tax Examination Returns Filed Examination regarding return filed Investment company distributions. Investment Company Distributions [Abstract] Less Distributions: Member Units [Member] Common Unitholders' Capital Subsequent Events [Abstract] Maximum percentage of aggregate commitment for organizational expenses and offering expenses. Maximum Percentage Of Aggregate Commitment For Organizational Expenses And Offering Expenses Maximum percentage of aggregate commitment for organizational expenses and offering expenses Fourth Amended Credit Agreement Fourth Amended Credit Agreement [Member] Fourth Amended Credit Agreement. RT Holdings Parent, LLC. R T Holdings Parent L L C [Member] RT Holdings Parent, LLC Amortization of Debt Issuance Costs Amortization of deferred financing costs Income tax. Income Tax [Line Items] Income Tax [Line Items] Debt Issuance Costs, Net Deferred financing costs Debt Issuance Costs, Net, Total Prepaid deferred financing costs yet to be amortized Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Accrued interest or penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total Related Party Transaction [Domain] Related Party Transaction Net Proceeds Received From Repurchase Agreements Net proceeds received from repurchase agreement. Net proceeds received from repurchase agreement Document Fiscal Year Focus Percentage of non-qualifying assets. Percentage Of Non Qualifying Assets Percentage of non-qualifying assets Other Loan Other Loan [Member] Other loan. Net change in unrealized appreciation/(depreciation) Unrealized Gain (Loss), Investment and Derivative, Operating, before Tax Unrealized Gain (Loss), Investment and Derivative, Operating, before Tax, Total Change in net unrealized (appreciation)/depreciation on investments Adjusted euro dollar rate. Adjusted Eurodollar Rate [Member] Adjusted Eurodollar Rate Financial Instruments [Domain] Investment company dividend distribution from capital. Investment Company Dividend Distribution From Capital Return of capital Measurement Input, Revenue Multiple [Member] Revenue Multiple Debt and Equity Investments [Member] Debt and equity investments. Debt & Equity Investments Organization and Basis of Presentation [Line Items] Organization and Basis of Presentation. Security Exchange Name Percentage of aggregate cumulative invested amount in existing portfolio companies. Percentage of Aggregate Cumulative Invested Amount in Existing Portfolio Companies Percentage of aggregate cumulative invested amount in existing portfolio companies Measurement Input Type [Axis] Measurement Input Type Revenues Revenues, Total Total revenue Related Party Related and Nonrelated Parties [Axis] New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Entity Address, State or Province Debt securities one. Debt Securities One [Member] Debt Common undrawn commitment member Common Undrawn Commitment [Member] Common Undrawn Commitment Amendment Flag Loss Contingencies [Table] Loss Contingencies [Table] Payments of Capital Distribution Distributions to Members Investment Company, Committed Capital Capital commitment Net unrealized depreciation on unfunded commitments Net Unrealized Depreciation on Unfunded Commitments Net unrealized depreciation on unfunded commitments. Debt Instrument Investment Company, Distributable Earnings (Loss), Accumulated Capital Loss Carryforward Capital loss carryover SOFR Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] Interest Expense, Debt, Excluding Amortization Credit facility interest expense Percentage of net unrealized depreciation on unfunded commitments. Percentage Of Net Unrealized Depreciation On Unfunded Commitments Percentage of net unrealized depreciation on unfunded commitments Payment of return of capital. Payment Of Return Of Capital Return of capital City Area Code Investment, Affiliated Issuer, Controlled [Member] Controlled Affiliated Investments Preferred Stock [Member] Preferred Equity Investment, Interest Rate, Floor Investment interest, floor Unrecognized Tax Benefits Unrecognized Tax Benefits, Ending Balance Unrecognized Tax Benefits, Beginning Balance Unrecognized tax benefits Fair Value Measured at Net Asset Value Per Share [Member] Fair Value Measured at Net Asset Value Per Share Diversified consumer services. Diversified Consumer Services [Member] Diversified Consumer Services Organization, Consolidation and Presentation of Financial Statements [Abstract] Non Cash Purchases of Investments Due to Reorganization Non cash purchases of investments due to reorganization. Non-cash purchases of investments due to reorganization Investment Owned Short Term Investment And Cash Equivalents Percent Of Net Assets Investment owned short term investment and cash equivalents percent of net assets. Percentage of total investment of net asset Investment, Identifier [Axis] Eurodollar [Member] Eurodollar Noninvestment Assets Less Noninvestment Liabilities Liabilities in Excess of Other Assets Commercial paper rate and euro currency rate. Commercial Paper Rate And Euro Currency Rate [Member] Commercial Paper Rate And Euro Currency Rate Percentage of yield on investment. Percentage Of Yield On Investment Percentage of yield on investment Proceeds from Secured Notes Payable Payment to secured borrowing Payment to secured borrowing Natixis. Natixis [Member] Natixis Investment, Interest Rate, Paid in Kind Investment interest, PIK Fed Funds Effective Rate Overnight Index Swap Rate [Member] Federal Funds Rate Investment Advisory and Management Agreement With Adviser Investment Advisory and Management Agreement With Adviser [Member] Investment Advisory and Management Agreement With Adviser [Member] Debt instrument administrative fees. Debt Instrument Administrative Fees Administrative fees Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Recallable amount. Recallable Amount Recallable amount Segment Reporting [Text Block] Segment Reporting Long-Term Debt, Weighted Average Interest Rate, over Time Weighted average interest rate Investment funds and vehicles. Investment Funds And Vehicles [Member] Investment Funds & Vehicles Trading Symbol Common Unit, Issued Common unitholder's commitment units issued Equity Method Investment, Nonconsolidated Investee [Domain] Geographical [Axis] Subsequent Event [Table] Debt Instrument, Interest Rate During Period Interest rate Entity Emerging Growth Company Investment valuations and fair value measurements. Investment Valuations And Fair Value Measurements [Line Items] Investment Valuations And Fair Value Measurements [Line Items] Aggregate acquisitions of investments Purchases of investments Payment for Purchase, Investment, Operating Activity Summary of significant accounting policies. Summary of Significant Accounting Policies [Table] Overton Chicago Gear L L C [Member] Overton chicago gear, l l c. Overton Chicago Gear, LLC Directors' fees payable Director's Fees Payable Director's fees payable. Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental and non-cash financing activities Common Unitholders' commitment: (18,034,649 units issued and outstanding) Common Unitholder, Commitments Common unitholders commitment value. Commitments from investors Investment company ratios based on average net assets of members’ capital. Investment Company Ratios Based On Average Net Assets Of Members Capital [Abstract] Ratios based on average net assets of Members’ Capital: Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Summary of Valuation Techniques and Quantitative Information Investment company ratio of financing cost to average net assets. Investment Company Ratio Of Financing Cost To Average Net Assets Ratio of financing cost to average net assets Total (Decrease) Increase in Members' Capital for the period end Stockholders' Equity, Period Increase (Decrease) Professional Fees Professional fees Percentage of voting interests on investment securities owned. Percentage Of Voting Interests On Investment Securities Owned Percentage of voting interests on investment securities owned Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile the net (decrease) increase in net assets resulting from operations to net cash provided by operating activities: Increase (decrease) in directors' fees payable Increase Decrease In Directors Fees Payable Increase decrease in directors fees payable. Short-Term Investments Short-term investments Short-Term Investments, Total Short-term Investments, Amortized Cost Cash and cash equivalents Cash and Cash Equivalent Cash and Cash Equivalents, at Carrying Value, Total Number of additional subscription agreements. Number of Additional Subscription Agreements Number of additional subscription agreements Incentive fee thereafter. Incentive Fee Thereafter [Member] Thereafter Equity Securities [Member] Equity Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Change in net unrealized appreciation/(depreciation) in investments held Equity Method Investment, Nonconsolidated Investee [Axis] Ratio Of Net Investment Income Before Expenses Reimbursed To Average Net Assets Ratio of net investment income before expenses reimbursed to average net assets. Ratio of net investment income before expenses reimbursed to average net assets Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash used in financing activities Cash Equivalents, at Carrying Value Cash Equivalents, at Carrying Value, Total Cash Equivalents, Amortized Cost Entity Filer Category Investment Company, Financial Highlights [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name Investment maturity month and year. Investment Maturity Month and Year Maturity/Expiration Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description Securities Sold under Agreements to Repurchase Securities Sold under Agreements to Repurchase, Total Repurchase agreement, amount of transaction Fair Value Investment Owned, Fair Value Fair Value Fair Value Fair Value Measurement Input, EBITDA Multiple [Member] EBITDA Multiple Proceeds from Disposition of Investment, Operating Activity Aggregate dispositions of investments Proceeds from sales and paydowns of investments Incentive fee third. Incentive Fee Third [Member] Third Segment Reporting [Abstract] Noninvestment Asset Less Noninvestment Liability, Percent of Net Asset Percentage of liabilities in excess of other assets Entity Address, Postal Zip Code Statement of Financial Position [Abstract] Percentage of internal rate of return on aggregate capital contribution. Percentage Of Internal Rate Of Return On Aggregate Capital Contribution Percentage of internal rate of return on aggregate capital contribution Local Phone Number Significant Segment Expenses [Member] Significant segment expenses.