Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Payments for deferred offering costs Payments of Offering Costs Payments of Offering Costs Maximum Maximum [Member] O 2026 M4 Aggregate Dividends O 2026 M4 Aggregate Dividends [Member] O 2026 M4 Aggregate Dividends Assets Offsetting Derivative Assets [Abstract] Statistical Measurement [Domain] Statistical Measurement [Domain] Cash and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Short-Term Debt, Type [Axis] Short-Term Debt, Type [Axis] Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Derivatives Available for Offset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Adviser written notice for termination Related Party Transaction, Adviser Written Notice for Termination Related Party Transaction, Adviser Written Notice for Termination Exempt Security [Domain] Exempt Security [Domain] Exempt Security [Domain] Cash and cash equivalents, Percent of Net Assets Cash And Cash Equivalents, Percent Of Net Assets Cash And Cash Equivalents, Percent Of Net Assets Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Upfront Receipts Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Adjustment to Compensation, Amount Adjustment to Compensation Amount Pledged Status [Axis] Pledged Status [Axis] Subordinated notes Subordinated Notes Investments [Member] Subordinated Notes Investments Financial Instrument [Axis] Financial Instrument [Axis] Ratio of total net operating expenses to average net assets Investment Company, Operating Expense Ratio Investment Company, Operating Expense Ratio Common shares $0.001 par value, unlimited shares authorized; 106,651,371 and 94,659,223 shares issued and outstanding, respectively Common Stock, Value, Issued Schedule of Secured Notes and Equity Interests in the CLO Transaction Schedule of Long-Term Debt Instruments [Table Text Block] Yield 2 Measurement Input, Discount Rate 2 [Member] Measurement Input, Discount Rate 2 Unrealized Appreciation/(Depreciation) Derivative Asset (Liability), Subject to Master Netting Arrangement, After Offset, Net Derivative Asset (Liability), Subject to Master Netting Arrangement, After Offset, Net Line of Credit Line of Credit [Member] Distributions reinvested Distributions Reinvested Distributions Reinvested Entity Ex Transition Period Entity Ex Transition Period Restatement Determination Date Restatement Determination Date Upfront Payments Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Personal products Personal products Personal Products Sector [Member] Personal Products Sector LTM EBITDA multiple 2 Measurement Input, LTM EBITDA Multiple 2 [Member] Measurement Input, LTM EBITDA Multiple 2 Building products Building Products Sector [Member] Building Products Sector Derivative Instrument [Axis] Derivative Instrument [Axis] Non-controlled/affiliated Investment, Affiliated Issuer, Noncontrolled [Member] Non-controlled/non-affiliated Investment, Unaffiliated Issuer [Member] Organizational Costs Organizational Costs, Policy [Policy Text Block] Organizational Costs, Policy Amendment Flag Amendment Flag Consolidated Entities [Axis] Consolidated Entities [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Net investment income (loss) before taxes Net Investment Income Investments [Domain] Investments [Domain] Increase (decrease) in capital gains incentive fees payable Increase (Decrease) in Incentive Fee Payable, Capital-Gain-Based Increase (decrease) in management fees payable Increase (Decrease) in Management Fee Payable Increase (decrease) in deferred tax liability Increase (Decrease) in Deferred Income Taxes Consolidated Entities [Domain] Consolidated Entities [Domain] Agreements and Related Party Transactions Related Party Transactions Disclosure [Text Block] Forward Revenue multiple 2 Measurement Input, Forward Revenue Multiple 2 [Member] Measurement Input, Forward Revenue Multiple 2 Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Entity Address, State or Province Entity Address, State or Province Amortization of deferred offering costs Amortization of Offering Costs Amortization of Offering Costs Aerospace and defense Aerospace Sector [Member] PEO Total Compensation Amount PEO Total Compensation Amount Common shares, par value (in usd per share) Common Stock, Par or Stated Value Per Share Assets at Fair Value Assets, Fair Value Disclosure [Abstract] Weighted average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Notional Amount Derivative, Notional Amount Schedule of Shareholder Servicing and/or Distribution Fees Schedule of Related Party Transactions [Table Text Block] Net accretion on debt instruments Accretion (Amortization) of Discounts and Premiums, Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Forward Revenue multiple Measurement Input, Forward Revenue Multiple [Member] Measurement Input, Forward Revenue Multiple Health care technology Health care technology Health Care Technology Sector [Member] Health Care Technology Sector Number of reporting segments Number of Reportable Segments Electronic equipment, instruments and components Electronic equipment, instruments and components Electronic Equipment, Instruments and Components Sector [Member] Electronic Equipment, Instruments and Components Sector Schedule of Investments [Abstract] Increase (decrease) in income incentive fees payable Increase (Decrease) in Incentive Fee Payable, Income-Based Series C Tranche A Notes Series C Senior Notes, Tranche A [Member] Series C Senior Notes, Tranche A Increase (decrease) in deferred income Increase (Decrease) in Deferred Revenue Short-Term Debt, Type [Domain] Short-Term Debt, Type [Domain] (Increase) decrease in interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Share repurchase program, authorized (as a percent) Stock Repurchase Program, Authorized, Percent of Net Asset Value Stock Repurchase Program, Authorized, Percent of Net Asset Value Net change in unrealized gain (loss) on investment transactions: Investment Owned, Recognized Unrealized Appreciation (Depreciation), Net [Abstract] Investment Owned, Recognized Unrealized Appreciation (Depreciation), Net Net realized and change in unrealized gain (loss) on investment transactions Realized And Unrealized Gain (Loss) On Investments [Abstract] Realized And Unrealized Gain (Loss) On Investments Entity Address, City or Town Entity Address, City or Town Price paid per share (in usd per share) Stock Repurchased During Period Average Cost Per Share Stock Repurchased During Period Average Cost Per Share Unrealized Appreciation/ (Depreciation) Fair Value, Net Derivative, Fair Value, Net Average Debt Outstanding Long-Term Debt, Average Amount Outstanding Statement of Financial Position [Abstract] Investment Management Agreement - incentive rate, quarterly hurdle rate Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate [Member] Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate Document Information [Line Items] Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Average notional amount Derivative, Average Notional Amount Derivative, Average Notional Amount Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Multisector holdings Multisector Holdings Sector [Member] Multisector Holdings Sector Interest rate Line of Credit Facility, Interest Rate at Period End Intermediary Manager Agreement Intermediary Manager Agreement [Member] Intermediary Manager Agreement Distributions reinvested Stock Issued During Period, Value, Dividend Reinvestment Plan Gross Reductions Investments in and Advances to Affiliates, at Fair Value, Gross Reductions Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Net investment income (loss) - basic (in usd per share) Investment Company, Investment Income (Loss), Per Share, Basic Interactive Media & Services Interactive Media And Services Sector [Member] Interactive Media And Services Sector Maximum Principal Amount Committed, Credit Facilities Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Interest Rate Investment Interest Rate Total increase (decrease) in net assets (in usd per share) Investment Company, Net Asset Value, Per Share, Period Increase (Decrease) United States UNITED STATES Investments Schedule of Investments [Text Block] Other Other expenses Other Expenses Dividends [Domain] Dividends [Domain] Dividend Income, Operating Dividend Income, Operating Subsequent Event Type [Axis] Subsequent Event Type [Axis] Ratio of net investment income (loss) before taxes to average net assets Investment Company, Investment Income (Loss) Ratio, Before Tax Investment Company, Investment Income (Loss) Ratio, Before Tax Line of Credit Facility [Table] Schedule of Long-Term Debt Instruments [Table] Total expenses Investment Income, Investment Expense Forward EBITDA multiple Measurement Input, Forward EBITDA Multiple [Member] Measurement Input, Forward EBITDA Multiple Share transfers between classes Stock Issued During Period, Value, Transferred Between Classes Stock Issued During Period, Value, Transferred Between Classes Capital contribution Variable Interest Entity, Capital Contribution Variable Interest Entity, Capital Contribution Assets Pledged as Collateral Financial Instruments, Owned, at Fair Value LTM Revenue multiple 1 Measurement Input, LTM Revenue Multiple 1 [Member] Measurement Input, LTM Revenue Multiple 1 Use of Estimates Use of Estimates, Policy [Policy Text Block] Amortization of deferred financing costs Amortization of deferred financing costs Amortization of Debt Issuance Costs Related Party [Axis] Related and Nonrelated Parties [Axis] Food products Food products Food and Beverage Sector [Member] Distributions reinvested (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Carrying Value, Other Borrowings Long-Term Debt Repurchased shares, net of early repurchase deduction Stock Repurchased During Period, Value, Net Of Early Repurchase Deduction Stock Repurchased During Period, Value, Net Of Early Repurchase Deduction Yield 4 Measurement Input, Discount Rate 4 [Member] Measurement Input, Discount Rate 4 Document Period End Date Document Period End Date Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Cash Collateral Received Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset Aggregate principal amount Maximum Principal Amount Committed, Other Borrowings Debt Instrument, Face Amount Net Assets Equity [Text Block] Net increase (decrease) (in shares) Stock Issued During Period, Shares, Period Increase (Decrease) Hedged items, debt Derivative, Amount of Hedged Item Debt term Debt Instrument, Term Equity Interests Beneficial Interest Liability Levels 1, 2 and 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Investment Management Agreement - incentive rate, pre-incentive fee net investment income exceeds catch-up threshold Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold [Member] Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] O 2025 M3 Aggregate Dividends O 2025 M3 Aggregate Dividends [Member] O 2025 M3 Aggregate Dividends LTM Revenue multiple Measurement Input, LTM Revenue Multiple [Member] Measurement Input, LTM Revenue Multiple Total Liabilities, Fair Value Disclosure Entity Shell Company Entity Shell Company Textiles, apparel and luxury goods Textiles, Apparel And Luxury Goods Sector [Member] Textiles, Apparel And Luxury Goods Sector Total increase (decreases) in net assets Stockholders' Equity, Period Increase (Decrease) Segment Reporting Segment Reporting, Policy [Policy Text Block] Schedule of Investments Investment Holdings, Schedule of Investments [Table Text Block] Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Capital gains incentive fee payable Incentive Fee Payable, Capital-Gain-Based Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] O 2026 M3 Aggregate Dividends O 2026 M3 Aggregate Dividends [Member] O 2026 M3 Aggregate Dividends Investment Management Agreement - incentive rate, capital gains Investment Management Agreement - Incentive Rate, Realized Capital Gains [Member] Investment Management Agreement - Incentive Rate, Realized Capital Gains Capital share transactions Investment Company, Capital Share Transaction, Increase (Decrease) [Abstract] Total liabilities Total liabilities Liabilities Yield Measurement Input, Discount Rate [Member] Non-qualifying assets percentage Investment Company, Non-Qualifying Assets Percentage Investment Company, Non-Qualifying Assets Percentage Geographical [Domain] Geographical [Domain] Schedule of Components of Interest Expense Interest Income and Interest Expense Disclosure [Table Text Block] Schedule of Impact to Consolidated Statements of Operations from Hedge Accounting Schedule of Interest Rate Derivatives [Table Text Block] Class I shares Common Class I [Member] Common Class I Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Schedule of Investments [Table] Schedule of Investments [Table] Income Tax Disclosure [Abstract] Machinery Machinery Machinery Sector [Member] Machinery Sector Company Receives Derivative, Fixed Interest Rate Interest rate swaps and options and foreign currency forward contracts Net change in unrealized (appreciation) depreciation on foreign currency forward contracts Net change in unrealized gain (loss) Unrealized Gain (Loss) on Derivatives Principal Outstanding Principal Amount Outstanding Long-Term Debt, Gross Asset Class [Domain] Asset Class [Domain] Related Party Transactions [Abstract] Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Maximum Principal Amount Committed Line of Credit Facility, Maximum Borrowing Capacity, and Debt Instrument, Face Amount Line of Credit Facility, Maximum Borrowing Capacity, and Debt Instrument, Face Amount Deferred Financing Costs Debt, Policy [Policy Text Block] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Waiver to average net assets Investment Company, Expense Ratio, Voluntary Fee Waiver Weighted average shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Derivative Instruments Derivatives, Policy [Policy Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Dividends Payable Dividends Payable Upfront Payments/Receipts Derivative Asset (Liability), Subject to Master Netting Arrangement, Collateral, Offset, Net Derivative Asset (Liability), Subject to Master Netting Arrangement, Collateral, Offset, Net Short-term debt Short-Term Debt Prepaid expenses Prepaid Expense Payment term Payment Term Payment Term Derivative liabilities Unrealized loss on derivative contracts Derivative Liabilities Subject to Master Netting Agreement Derivative Liability, Subject to Master Netting Arrangement, before Offset Principal Amount Available Line of Credit Facility, Current Borrowing Capacity Schedule of Changes in Fair Value of Level 3 Investments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] TCAP JV TCAP JV [Member] TCAP JV Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Administration Agreement Administration Agreement [Member] Administration Agreement Per share data: Investment Company, Financial Highlights [Roll Forward] Award Timing Predetermined Award Timing Predetermined [Flag] Deferred federal tax provision Deferred Federal Income Tax Expense (Benefit) Letter of credit Letters of Credit Outstanding, Amount Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Unrealized Depreciation Derivative Liability, Subject to Master Netting Arrangement, after Offset Percentage of outstanding shares repurchased Stock Repurchase Program Percentage Of Outstanding Shares Repurchased Stock Repurchase Program Percentage Of Outstanding Shares Repurchased Investment Company, Net Assets [Roll Forward] Investment Company, Net Assets [Roll Forward] Organization, Consolidation and Presentation of Financial Statements [Abstract] Currency Sold Derivative Asset, Notional Amount Schedule of Investments in and Affiliated Funds Investments in and Advances to Affiliates [Table Text Block] Investment Company, Financial Highlights [Line Items] Investment Company, Financial Highlights [Line Items] Derivative assets Derivative Asset, Gross Asset Including Not Subject to Master Netting Arrangement Ratio of net investment income (loss) after taxes to average net assets Investment Company, Investment Income (Loss) Ratio Construction and engineering Construction and engineering Construction Sector [Member] Income incentive fees Incentive Fee Expense, Income-Based Hedged items Gain (loss) on hedged items Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge All Executive Categories All Executive Categories [Member] Interest Rate Scenario [Domain] Interest Rate Scenario [Domain] Interest Rate Scenario [Domain] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Net expenses Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement Fair Value Long-Term Debt, Fair Value Pharmaceuticals Pharmaceuticals Pharmaceuticals Sector [Member] Pharmaceuticals Sector Series B Tranche C Notes Series B Senior Notes, Tranche C [Member] Series B Senior Notes, Tranche C Share repurchase program, price if outstanding less than one year, percent of NAV (as a percent) Stock Repurchase Program, Price if Outstanding Less Than One Year, Percent of Net Asset Value Stock Repurchase Program, Price if Outstanding Less Than One Year, Percent of Net Asset Value Total CLO Transaction Long Term Debt Gross And Beneficial Interest Liability Long Term Debt Gross And Beneficial Interest Liability Asset coverage ratio Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated statements of assets and liabilities: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Distributions Investment Company, Distribution [Policy Text Block] Health care equipment and supplies Health care equipment and supplies Health Care Equipment and Supplies Sector [Member] Health Care Equipment and Supplies Sector Ratio of total expenses to average net assets Investment Company, Expense Ratio, after Voluntary Fee Waiver Deduction Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Interest rate swaps Gain (loss) from interest rate swaps accounted for as hedges Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments Carrying Value, Credit Facilities Long-Term Line of Credit Minimum Minimum [Member] Series B Tranche B Notes Series B Senior Notes, Tranche B [Member] Series B Senior Notes, Tranche B Investment Type [Axis] Investment Type [Axis] Dividends paid Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Joint Ventures Variable Interest Entity Disclosure [Text Block] Liabilities Liabilities [Abstract] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Cash Collateral Received Derivative Asset, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Net amount of derivative assets Derivative Asset, Subject to Master Netting Arrangement, after Offset and Deduction Cash and cash equivalents, Fair Value Cash and Cash Equivalents, Fair Value Disclosure Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Affiliated Entity Affiliated Entity [Member] Diversified consumer services Diversified consumer services Consumer Sector [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Total investments, cash and cash equivalents, Percent of Net Assets Investments, Cash And Cash Equivalents, Net Assets, Percentage Investments, Cash And Cash Equivalents, Net Assets, Percentage Proceeds from issuance of common shares Proceeds from Issuance of Common Stock Net investment income (loss) after taxes Net investment income (loss) Investment Income, Operating, after Expense and Tax Forward Revenue multiple 1 Measurement Input, Forward Revenue Multiple 1 [Member] Measurement Input, Forward Revenue Multiple 1 Common shares issued (in shares) Sale of Stock, Number of Shares Issued in Transaction Series A Tranche A Notes Senior Notes, Tranche A, Due March 19, 2027 [Member] Senior Notes, Tranche A, Due March 19, 2027 Other Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other Increase (Decrease) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other Increase (Decrease) Exercise Price Award Exercise Price Series A Tranche A Notes Series A Senior Notes, Tranche A [Member] Series A Senior Notes, Tranche A Related Party Transaction [Axis] Related Party Transaction [Axis] Share repurchase program, minimum holding period Stock Repurchase Program, Minimum Holding Period Stock Repurchase Program, Minimum Holding Period O 2026 M5 Aggregate Dividends O 2026 M5 Aggregate Dividends [Member] O 2026 M5 Aggregate Dividends Document Quarterly Report Document Quarterly Report Capital gains incentive fees Incentive Fee Expense, Capital-Gain-Based, Net Incentive Fee Expense, Capital-Gain-Based, Net Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Accounting fees Accounting Fees Accounting Fees Interest Rate Swaps Interest rate swaps Interest Rate Swap [Member] Aerospace and defense Aerospace and Defense Sector [Member] Aerospace and Defense Sector Investments at fair value, measurement input Investment Company, Investment Owned, Measurement Input Debt Debt Disclosure [Text Block] Investments, amortized cost Amortized Cost Investment Owned, Cost Gross Additions Investments in and Advances to Affiliates, at Fair Value, Gross Additions Interest payable Interest Payable Syndication and other origination fee income Syndication And Other Origination Fee Income Syndication And Other Origination Fee Income Management fees Management Fee Expense Open Forward Foreign Currency Contract, Identifier [Axis] Open Forward Foreign Currency Contract, Identifier [Axis] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Financial Highlights Investment Company, Financial Highlights [Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Measurement Input Type [Domain] Measurement Input Type [Domain] Gains (losses) included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Secured Debt Secured Debt [Member] Purchases and drawdowns of investments Payment for Purchase, Investment, Operating Activity Insurance Insurance Sector, Net Of Funding Adjustments [Member] Insurance Sector, Net Of Funding Adjustments Contributed capital Net proceeds for share subscriptions Sale of Stock, Consideration Received on Transaction Adoption Date Trading Arrangement Adoption Date Counterparty Name [Domain] Counterparty Name [Domain] Interest rate Debt Instrument, Interest Rate, Stated Percentage Total net assets Net assets Net assets, at beginning of period Net assets, at end of period Net assets, end of period Equity, Attributable to Parent First lien senior secured debt Debt Securities, First Lien Senior Secured Debt [Member] Debt Securities, First Lien Senior Secured Debt Class D shares Common Class D [Member] Common Class D Series A Tranche B Notes Series A Senior Notes, Tranche B [Member] Series A Senior Notes, Tranche B IT services IT services Technology Sector [Member] Payable for share repurchase Share Repurchase Payable Share Repurchase Payable Assets Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Other investments Other Investments Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Professional fees Professional Fees Insider Trading Policies and Procedures [Line Items] Investment, Issuer Affiliation [Domain] Investment, Issuer Affiliation [Domain] Yield 1 Measurement Input, Discount Rate 1 [Member] Measurement Input, Discount Rate 1 Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Incentive fees to average net assets Investment Company, Incentive Fee to Average Net Assets Payments on debt Repayments of Debt O 2025 M4 Aggregate Dividends O 2025 M4 Aggregate Dividends [Member] O 2025 M4 Aggregate Dividends Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Number of operating segments Number of Operating Segments U.S. federal excise tax Excise and Sales Taxes Entity Central Index Key Entity Central Index Key Weighted Average Weighted Average [Member] Maximum offering amount Sale Of Stock, Maximum Issuance, Amount Sale Of Stock, Maximum Issuance, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Available capital Variable Interest Entity, Available Capital Contribution Variable Interest Entity, Available Capital Contribution Income Taxes Income Tax, Policy [Policy Text Block] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Income Statement [Abstract] Net assets Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Investments [Line Items] Schedule of Investments [Line Items] Net realized and unrealized gain (loss) (in usd per share) Investment Company, Gain (Loss) on Investment, Per Share Regions Bank Regions Bank [Member] Regions Bank Expenses Operating Expenses [Abstract] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Distributors Distributors Sector [Member] Distributors Sector Distribution and shareholder servicing fees waived Distribution and shareholder servicing fees waived Investment Company, Voluntary Fee Waived Total net realized and change in unrealized gain (loss) on investment transactions Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, after Tax Non-controlled, non-affiliated investments and affiliated investments Net change in unrealized (appreciation) depreciation on investments Net Change in Unrealized Appreciation (Depreciation) Debt and Equity Securities, Unrealized Gain (Loss) Spread on variable rate Interest Rate Debt Instrument, Basis Spread on Variable Rate Agent fees recognized as earned Deferred Income, Revenue Recognized Spread Investment, Basis Spread, Variable Rate City Area Code City Area Code Variable Rate [Domain] Variable Rate [Domain] Series B Senior Notes Series B Senior Notes [Member] Series B Senior Notes Document Information [Table] Document Information [Table] All Individuals All Individuals [Member] Subsequent Events Subsequent Events [Text Block] O 2026 M2 Aggregate Dividends O 2026 M2 Aggregate Dividends [Member] O 2025 M2 Aggregate Dividends Fair Value, Other Borrowings Debt Instrument, Fair Value Disclosure Name Forgone Recovery, Individual Name Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Sponsor subordinated note Sponsor Subordinated Note [Member] Sponsor Subordinated Note Non-controlled, non-affiliated investments and affiliated investments Net realized (gain) loss on investments Net Realized Gain (Loss) Debt and Equity Securities, Realized Gain (Loss) Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Sponsor subordinated note Debt Securities, Sponsor Subordinated Note [Member] Debt Securities, Sponsor Subordinated Note Statement [Line Items] Statement [Line Items] Total assets Assets Entity [Domain] Entity [Domain] TPG Twin Brook Capital Income Fund TCAP JV TCAP JV Partner [Member] TCAP JV Partner Industry Sector [Axis] Industry Sector [Axis] Variable Interest Entity, Not Primary Beneficiary Variable Interest Entity, Not Primary Beneficiary [Member] Class B Senior Secured Floating Rate Notes Class B Senior Secured Floating Rate Notes [Member] Class B Senior Secured Floating Rate Notes Dividends Investment Company, Dividend Distribution [Abstract] Dividend, Interest, PIK and Other Income Interest and Dividend Income, Operating ASPV Credit Facility ASPV Credit Facility [Member] ASPV Credit Facility Twin Brook Capital Funding XXXIII Twin Brook Capital Funding XXXIII [Member] Twin Brook Capital Funding XXXIII LTM EBITDA multiple Measurement Input, LTM EBITDA Multiple [Member] Measurement Input, LTM EBITDA Multiple (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets Net increase (decrease) Stock Issued During Period, Value, Period Increase (Decrease) Stock Issued During Period, Value, Period Increase (Decrease) Proceeds from shares sold (in shares) Stock Issued During Period, Shares, New Issues PEO PEO [Member] Series C Tranche B Notes Series C Senior Notes, Tranche B [Member] Series C Senior Notes, Tranche B Water utilities Water utilities Water Utilities Sector [Member] Water Utilities Sector Debt (Note 5) Carrying Value Debt, Long-Term and Short-Term, Combined Amount Shareholder servicing and/or distribution fees as a percentage of NAV Management and Service Fees, Rate (Increase) decrease in prepaid expenses Increase (Decrease) in Prepaid Expense Principal/Par Amount Investment Owned, Balance, Principal Amount Software Software Software Sector [Member] Software Sector Unrealized Depreciation Derivative liabilities Derivatives Available for Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Food and staples retailing Food and staples retailing Food and Staples Retailing Sector [Member] Food and Staples Retailing Sector Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Non-Cash Collateral Received Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset Gas utilities Gas utilities Gas Utilities Sector [Member] Gas Utilities Sector Cash equivalents Cash Equivalents, at Carrying Value O 2025 M1 Aggregate Dividends O 2025 M1 Aggregate Dividends [Member] O 2025 M1 Aggregate Dividends Subsequent Event Type [Domain] Subsequent Event Type [Domain] Weighted Average Interest Rate Long-Term Debt, Weighted Average Interest Rate, over Time Total investments, cash and cash equivalents, Fair Value Investments, Cash And Cash Equivalents, Fair Value Investments, Cash And Cash Equivalents, Fair Value Investments at Fair Value Fair Value Measurement, Policy [Policy Text Block] Investment Company [Abstract] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Total from operations (in usd per share) Investment Company, Investment Income (Loss) from Operations, Per Share Class D Senior Secured Floating Rate Notes Class D Senior Secured Floating Rate Notes [Member] Class D Senior Secured Floating Rate Notes Net increase (decrease) in net assets resulting from capital share transactions Investment Company, Capital Transactions, Increase (Decrease) Investment Company, Capital Transactions, Increase (Decrease) Schedule of Significant Unobservable Inputs Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Common shares, outstanding (in shares) Shares outstanding, end of period (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Financial Support for Nonconsolidated Legal Entity [Table] Financial Support for Nonconsolidated Legal Entity [Table] Payments for deferred financing costs Payments for deferred financing costs Payments of Debt Issuance Costs Trading companies and distributors Trading companies and distributors Trading Companies and Distributors Sector [Member] Trading Companies and Distributors Sector Entity Current Reporting Status Entity Current Reporting Status Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Investment, Affiliated Issuer, Controlled Investment, Affiliated Issuer, Controlled [Member] Total Shareholder Return Amount Total Shareholder Return Amount Liabilities at Fair Value Liabilities, Fair Value Disclosure [Abstract] Schedule Of Share Repurchases Schedule Of Share Repurchases [Table Text Block] Schedule Of Share Repurchases Electric utilities Electric Utilities Sector [Member] Electric Utilities Sector Interest Interest Income, Operating, Paid in Cash Total return Investment Company, Total Return Deferred offering costs Deferred Offering Costs Chemicals Chemicals Chemicals Sector [Member] Forward Revenue multiple 3 Measurement Input, Forward Revenue Multiple 3 [Member] Measurement Input, Forward Revenue Multiple 3 Total Investment percentage Investment Owned, Percent of Total Investments Investment Owned, Percent of Total Investments Schedule of Derivative Assets With Offsets by Counterparty Offsetting Assets [Table Text Block] Net investment income (loss) - diluted (in usd per share) Investment Company, Investment Income (Loss), Per Share, Diluted Restricted Securities Restricted Securities [Member] Restricted Securities Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Dividends payable Dividends Incurred But Not Yet Paid Dividends Incurred But Not Yet Paid Financial Instruments [Domain] Financial Instruments [Domain] Leisure equipment and products Leisure equipment and products Leisure Equipment And Products Sector [Member] Leisure Equipment And Products Sector Permanent book-to-tax differences Effective Income Tax Rate Reconciliation, Permanent Differences, Amount Effective Income Tax Rate Reconciliation, Permanent Differences, Amount Other Other Income Unrealized gain on derivative contracts Derivative Asset Amount repurchased (all classes) Stock Repurchased During Period, Value Agent fees received Deferred Income, Addition Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Proceeds from shares sold Proceeds from shares sold Stock Issued During Period, Value, New Issues Increase (decrease) in interest payable Increase (Decrease) in Interest Payable, Net O 2025 M6 Aggregate Dividends O 2025 M6 Aggregate Dividends [Member] O 2025 M6 Aggregate Dividends Distribution and shareholder servicing fees: Distribution and shareholder servicing fees Expense Related to Distribution or Servicing and Underwriting Fees Schedule of Financial Highlights Investment Company, Financial Highlights [Table Text Block] Cash (restricted cash of $65,738 and $85,873, respectively) Cash Household durables Household durables Household Durables Sector [Member] Household Durables Sector Net realized gain (loss) on investment transactions: Net Realized Gains (Losses) [Abstract] Net Realized Gains (Losses) Short-Term Financing Transactions Short-Term Financing Transactions [Member] Short-Term Financing Transactions Interest rate, cash Investment, Interest Rate, Paid in Cash Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Interest Rate Options Interest rate options Put Option [Member] Series B Tranche A Notes Series B Senior Notes, Tranche A [Member] Series B Senior Notes, Tranche A Sales and Paydowns Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales and Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales and Settlements Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Yield 3 Measurement Input, Discount Rate 3 [Member] Measurement Input, Discount Rate 3 Schedule of Dividends Declared Dividends Declared [Table Text Block] Membership interest Investment, Ownership Percentage Investment, Ownership Percentage Media Media Media Sector [Member] Media Sector Investment Management Agreement Investment Management Agreement [Member] Investment Management Agreement Current Fiscal Year End Date Current Fiscal Year End Date Borrowings on debt Proceeds from Issuance of Debt Investment Management Agreement - incentive rate, annualized catch-up threshold Investment Management Agreement - Incentive Rate, Annualized Catch-Up Threshold [Member] Investment Management Agreement - Incentive Rate, Annualized Catch-Up Threshold Income tax interest Unrecognized Tax Benefits, Interest on Income Taxes Expense Multiline retail Multiline Retail Sector, Net Of Funding Adjustments [Member] Multiline Retail Sector, Net Of Funding Adjustments Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Related Party Transaction [Domain] Related Party Transaction [Domain] Diversified financial services Financial Services Sector [Member] Wells Fargo Bank, N.A. Wells Fargo Bank, N.A. [Member] Wells Fargo Bank, N.A. Electrical equipment Electrical equipment Electrical Equipment Sector [Member] Electrical Equipment Sector Repurchased shares, net of early repurchase reduction (in shares) Total number of shares repurchased (all classes) (in shares) Stock Repurchased During Period, Shares Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends per share (in usd per share) Dividends declared (in usd per share) Common Stock, Dividends, Per Share, Declared LTM EBITDA multiple 1 Measurement Input, LTM EBITDA Multiple 1 [Member] Measurement Input, LTM EBITDA Multiple 1 Entity File Number Securities Act File Number Share transfers between classes (in shares) Stock Issued During Period, Share, Transferred Between Classes Stock Issued During Period, Share, Transferred Between Classes Morgan Stanley Capital Services, LLC Morgan Stanley Capital Services, LLC [Member] 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Approach [Member] Valuation Technique, Discounted Cash Flow and Market Approach Unrealized Appreciation Derivative Asset, Subject to Master Netting Arrangement, after Offset Income tax penalties Unrecognized Tax Benefits, Income Tax Penalties Expense Proceeds from sales and paydowns of investments Proceeds from Disposition of Investment, Operating Activity Document Type Document Type Maximum percent of shareholder servicing and/or distribution fee to be paid by adviser Shareholder Servicing And Distribution Fee To Be Paid By Adviser, Maximum, Percent Shareholder Servicing And Distribution Fee To Be Paid By Adviser, Maximum, Percent 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] Net paydown gain on debt instruments Gain (Loss) on Extinguishment of Debt Fair Value as of Grant Date Award Grant Date Fair Value Net asset value per share (in usd per share) Net asset value, beginning of period (in usd per share) Net asset value, end of period (in usd per share) Net Asset Value Per Share Net settlements on derivative contracts (Payments For) Proceeds From Derivative Instruments, Operating Activities (Payments For) Proceeds From Derivative Instruments, Operating Activities LTM Revenue multiple 2 Measurement Input, LTM Revenue Multiple 2 [Member] Measurement Input, LTM Revenue Multiple 2 Interest rate, PIK Investment, Interest Rate, Paid in Kind Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Open Swap Contract, Identifier [Axis] Open Swap Contract, Identifier [Axis] Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Leisure equipment and products Leisure Equipment And Products Sector, Net Of Funding Adjustments [Member] Leisure Equipment And Products Sector, Net Of Funding Adjustments Local Phone Number Local Phone Number Expense Support Agreement Expense Support Agreement [Member] Expense Support Agreement Class C Senior Secured Floating Rate Notes Class C Senior Secured Floating Rate Notes [Member] Class C Senior Secured Floating Rate Notes Canada CANADA Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Change in operating assets and liabilities: Increase (Decrease) in Operating Assets [Abstract] Pledged Status [Domain] Pledged Status [Domain] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Professional services Professional services Professional Services Sector [Member] Professional Services Sector Commitments and contingencies (Note 8) Commitments and Contingencies Cash and cash equivalents, Interest Rate Cash And Cash Equivalents, Interest Rate Cash And Cash Equivalents, Interest Rate Containers and packaging Containers and packaging Container and Packaging Sector [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Net increase (decrease) in net assets resulting from dividends Amount Investment Company, Dividend Distribution Payment-in-kind interest Interest received in-kind Interest Income, Operating, Paid in Kind Executive Category: Executive Category [Axis] Counterparty Name [Axis] Counterparty Name [Axis] Life sciences tools and services Life sciences tools and services Life Sciences Tools And Services Sector [Member] Life Sciences Tools And Services Sector LTM Revenue multiple 3 Measurement Input, LTM Revenue Multiple 3 [Member] Measurement Input, LTM Revenue Multiple 3 Schedule of Fair Value Hierarchy of Financial Instruments Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Net change in unrealized (appreciation) depreciation on interest rate swaps and options, inclusive of hedging effects Unrealized Gain (Loss) On Derivatives And Hedged Items Unrealized Gain (Loss) On Derivatives And Hedged Items All Award Types Award Type [Domain] Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash used in operating activities: Adjustments To Reconcile Net Assets From Operations To Cash Provided by (Used in) Operating Activities [Abstract] Adjustments To Reconcile Net Assets From Operations To Cash Provided by (Used in) Operating Activities Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value of Investments Fair Value Disclosures [Text Block] Variable Interest Entity [Table] Variable Interest Entity [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Offering Costs Offering Costs [Policy Text Block] Offering Costs Financial Support for Nonconsolidated Legal Entity [Line Items] Financial Support for Nonconsolidated Legal Entity [Line Items] Schedule of Transactions in Common Shares Investment Company, Change in Net Assets [Table Text Block] Asset Pledged as Collateral Asset Pledged as Collateral [Member] Supplemental and non-cash information Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Accrued expenses and other liabilities payable to affiliate Accrued Liabilities and Other Liabilities Geographical [Axis] Geographical [Axis] Increase (decrease) in accrued expenses and other liabilities payable to affiliate Increase (Decrease) in Accrued Liabilities Restricted cash Restricted cash Restricted Cash Offering costs, amortization period Offering Costs, Amortization Period Offering Costs, Amortization Period Fair value measured at net asset value Fair Value Measured at Net Asset Value Per Share [Member] Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Axis] Average interest rate Line of Credit Facility, Interest Rate During Period Health care providers and services Health care providers and services Health Care Providers and Services Sector [Member] Health Care Providers and Services Sector Other assets Other Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Legal Entity [Axis] Legal Entity [Axis] Interest Total interest expense Interest Expense, Debt Carrying value Hedged Liability, Fair Value Hedge Series D Senior Notes Series D Senior Notes [Member] Series D Senior Notes Investment Related Transactions, Revenue Recognition and Expenses Revenue [Policy Text Block] Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Management fees payable Management Fee Payable Cash Collateral Pledged Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset Interest rate scenario one Interest Rate Scenario One [Member] Interest Rate Scenario One Trustees' fees Trustee Fees Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Alternate base rate Base Rate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Incentive fee percentage Management and Service Fees, Incentive Rate Net amount of derivative liabilities Derivative Liability, Subject to Master Netting Arrangement, after Offset and Deduction Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Number of components of incentive fee Related Party Transaction, Number Of Components Related Party Transaction, Number Of Components Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Leisure products Leisure products Leisure Products Sector [Member] Leisure Products Sector Schedule of Outstanding Commitments to Fund Investments Schedule For Financial Support For Nonconsolidated Entity [Table Text Block] Schedule For Financial Support For Nonconsolidated Entity Series D Tranche A Notes Series D Senior Notes, Tranche A [Member] Series D Senior Notes, Tranche A Schedule of Debt Schedule of Debt [Table Text Block] Expense payments Related Party Transaction, Amounts of Transaction Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Measurement Input Type [Axis] Measurement Input Type [Axis] Deferred income Deferred Revenue Interest rate scenario two Interest Rate Scenario Two [Member] Interest Rate Scenario Two Payments for repurchase of common shares Payments for Repurchase of Common Stock O 2025 M2 Aggregate Dividends O 2025 M2 Aggregate Dividends [Member] O 2025 M2 Aggregate Dividends Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Real estate management and development Real estate management and development Real Estate Management And Development Sector [Member] Real Estate Management And Development Sector Management and service fees, base rate Management and Service Fees, Base Rate Schedule of Effect of Foreign Currency Forward Contracts on Consolidated Statement of Operations Derivative Instruments, Gain (Loss) [Table Text Block] Interactive media and services Interactive Media And Services Sector, Net Of Funding Adjustment [Member] Interactive Media And Services Sector, Net Of Funding Adjustment Award Type Award Type [Axis] Interest rate swaps and options Interest rate swaps/options Interest Rate Contract [Member] Cumulative hedging adjustments Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Net change in unrealized gain (loss) Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Total distributable earnings (loss) Retained Earnings (Accumulated Deficit) Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Current tax liability Liability for Uncertainty in Income Taxes, Current Commercial services and supplies Commercial services and supplies Commercial and Industrial Sector [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Road and rail Road and Rail [Member] Road and Rail Outstanding commitments to fund investments Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount Series D Tranche B Notes Series D Senior Notes, Tranche B [Member] Series D Senior Notes, Tranche B Class A-L Senior Secured Floating Rate Loans Class A-L Senior Secured Floating Rate Notes [Member] Class A-L Senior Secured Floating Rate Notes Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] MUFG Bank, Ltd. MUFG Bank, Ltd. [Member] MUFG Bank, Ltd. Interest expense Interest Expense, Debt, Excluding Amortization Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Electronic equipment, instruments and components Electrical Equipment Sector, Net Of Funding Adjustment [Member] Electrical Equipment Sector, Net Of Funding Adjustment Total liabilities and net assets Liabilities and Equity Class S shares Common Class S [Member] Common Class S Employee Stock Option Share-Based Payment Arrangement, Option [Member] Purchases and Drawdowns Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Income incentive fee payable Incentive Fee Payable, Income-Based Industry Sector [Domain] Industry Sector [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Percentage of Net Assets Investment Owned, Net Assets, Percentage Expense reimbursement period Expense Reimbursement Period Expense Reimbursement Period MSPV Credit Facility MSPV Credit Facility [Member] MSPV Credit Facility O 2025 M5 Aggregate Dividends O 2025 M5 Aggregate Dividends [Member] O 2025 M5 Aggregate Dividends Industrial conglomerates Industrial Conglomerates Industrial Conglomerates Sector [Member] Industrial Conglomerates Sector Tabular List, Table Tabular List [Table Text Block] Additional paid-in-capital Additional Paid in Capital Specialty retail Specialty retail Specialty Retail Sector [Member] Specialty Retail Sector Name Awards Close in Time to MNPI Disclosures, Individual Name Average daily borrowings Line of Credit Facility, Average Outstanding Amount Investment, Identifier [Axis] Investment, Identifier [Axis] Total cash purchase price Payments to Acquire Investments Internet and direct marketing retail Internet and direct marketing retail Internet And Direct Marketing Retail Sector [Member] Internet And Direct Marketing Retail Sector Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Market comparable Valuation, Market Approach [Member] Loan Syndications and Participants Transfers and Servicing of Financial Assets, Policy [Policy Text Block] Adjustment to Compensation: Adjustment to Compensation [Axis] Exempt Security [Axis] Exempt Security [Axis] Exempt Security Dividends Payable [Line Items] Dividends Payable [Line Items] Dividends Payable [Table] Dividends Payable [Table] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid during the period for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Foreign currency forward contracts Foreign Exchange Forward [Member] Semiconductors and semiconductor equipment Semiconductors and semiconductor equipment Semiconductors And Semiconductor Equipment Sector [Member] Semiconductors And Semiconductor Equipment Sector Ratios / supplemental data Investment Company, Ratios to Average Net Assets and Supplemental Data [Abstract] Investment Company, Ratios to Average Net Assets and Supplemental Data Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total financial instruments, at fair value Assets, Fair Value Disclosure Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Line of Credit Facility [Line Items] Debt Instrument [Line Items] Schedule of Derivative Contracts and Respective Classification on Consolidated Statement of Assets and Liabilities Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Interest Rate Scenario [Axis] Interest Rate Scenario [Axis] Interest Rate Scenario Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Investment Company, Financial Highlights [Table] Investment Company, Financial Highlights [Table] Foreign currency forward contracts Realized (loss) on foreign currency forward contracts Gain (Loss) on Sale of Derivatives Entity Filer Category Entity Filer Category Total capital commitments from investors Total capital commitments, end of period Investment Company, Committed Capital Insurance Insurance Sector [Member] Auto components Auto components Automotive Sector [Member] Accrued expenses and other liabilities payable to affiliate Accrued Liabilities Dividends [Axis] Dividends [Axis] Open Option Contract, Identifier [Axis] Open Option Contract, Identifier [Axis] Schedule of Derivative Liabilities With Offsets by Counterparty Offsetting Liabilities [Table Text Block] Interest receivable Interest Receivable Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent CLO Transaction CLO Transaction [Member] CLO Transaction Variable interest entity, ownership percentage Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage Company Selected Measure Amount Company Selected Measure Amount Percent of shareholder servicing and/or distribution fee to be paid by adviser, period Shareholder Servicing And Distribution Fee To Be Paid By Adviser, Period Shareholder Servicing And Distribution Fee To Be Paid By Adviser, Period Deferred 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(Decrease), Including Exchange Rate Effect and Discontinued Operation Liabilities Offsetting Derivative Liabilities [Abstract] Investment Management Agreement - incentive rate, quarterly catch-up threshold Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold [Member] Investment Management Agreement - Incentive Rate, Quarterly Catch-Up Threshold Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Portfolio turnover rate Investment Company, Portfolio Turnover Increase (decrease) in net assets resulting from operations Net Income (Loss) Attributable to Parent [Abstract] Currency Purchased Derivative Liability, Notional Amount Net increase (decrease) in net assets resulting from operations Net increase (decrease) in net assets resulting from operations Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Investments Investments [Member] Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] Internet and direct marketing retail Internet And Direct Marketing Retail Sector, Net Of Funding Adjustments [Member] Internet And Direct Marketing Retail Sector, Net Of Funding Adjustments Restatement Determination Date: Restatement Determination Date [Axis] Company written notice for termination Related Party Transaction, Company Written Notice for Termination Related Party Transaction, Company Written Notice for Termination Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Investment Management Agreement - incentive rate, annualized hurdle rate Investment Management Agreement - Incentive Rate, Annualized Hurdle Rate [Member] Investment Management Agreement - Incentive Rate, Annualized Hurdle Rate Media Media Sector, Net Of Funding Adjustments [Member] Media Sector, Net Of Funding Adjustments Fair Value, Assets Unrealized gain on derivative contracts Derivative Assets Subject to Master Netting Agreement Derivative Asset, Subject to Master Netting Arrangement, before Offset SMBC Truist Credit Facility SMBC Truist Credit Facility [Member] SMBC Truist Credit Facility Company Pays Company Sold Derivative, Basis Spread on Variable Rate Investment income Revenues [Abstract] Multiline Retail Multiline Retail Sector [Member] Multiline Retail Sector Current federal tax Current Federal Tax Expense (Benefit) Forward EBITDA multiple 1 Measurement Input, Forward EBITDA Multiple 1 [Member] Measurement Input, Forward EBITDA Multiple 1 Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract]