Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] High Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Cost Investment Owned, At Cost And Cash Equivalents, At Carrying Value Investment Owned, At Cost And Cash Equivalents, At Carrying Value Statistical Measurement [Domain] Statistical Measurement [Domain] Title of 12(b) Security Subsequent Event Subsequent Event [Member] Carrying Value Reported Value Measurement [Member] Document Fiscal Year Focus Adjustment to Compensation, Amount Adjustment to Compensation Amount Financial Instrument [Axis] Financial Instrument [Axis] Schedule of Fair Value Measurements of Investments, by Major Class, and Cash Equivalents Fair Value, Assets Measured on Recurring Basis [Table Text Block] Common shares, $0.01 par value, 500,000,000 and 500,000,000 shares authorized, 49,387,065 and 49,387,065 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Line of credit facility, unused capacity, commitment fee percentage, in excess of forty percent of total commitments (as a percent) Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, In Excess Of Forty Percent Of Total Commitments Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, In Excess Of Forty Percent Of Total Commitments Schedule of Components of Interest Expense and Debt Financing Expenses and Debt Obligations Schedule of Long-Term Debt Instruments [Table Text Block] CLO-I [Member] CLO-I Credit Facility Line of Credit [Member] Fair Value Total investments and cash equivalents Investment Owned And Cash Equivalents, Fair Value Investment Owned And Cash Equivalents, Fair Value Restatement Determination Date Restatement Determination Date O 2025 Q1 Dividends O 2025 Q1 Dividends [Member] O 2025 Q1 Dividends Derivative Instrument [Axis] Derivative Instrument [Axis] Non-controlled/Non-affiliated Investment, Unaffiliated Issuer [Member] AAA Class X 2024 Notes AAA Class X 2024 Notes [Member] AAA Class X 2024 Notes AAA Class A-L-R 2026 Loans to the 2026 Issuer AAA Class A-L-R 2026 Loans To The 2026 Issuer [Member] AAA Class A-L-R 2026 Loans To The 2026 Issuer Black-Scholes Valuation, Black-Scholes [Member] Valuation, Black-Scholes Subordinated 2022 Notes Subordinated 2022 Notes [Member] Subordinated 2022 Notes Entity Amendment Flag Average price paid per share (in dollars per share) Shares Acquired, Average Cost Per Share Entity Common Stock, Shares Outstanding Qualifying Assets Qualifying Assets [Member] Qualifying Assets 2026 Debt/ CLO-II CLO-II 2023 Debt Securitization [Member] 2023 Debt Securitization Principal amount at issuance (as a percent) Debt Instrument, Issuance, Percentage of Principal Amount Debt Instrument, Issuance, Percentage of Principal Amount O 2025 Q2 Dividends O 2025 Q2 Dividends [Member] O 2025 Q2 Dividends Period of agreement will renewed additionally Related Party Transaction, Additional Renewal Term Related Party Transaction, Additional Renewal Term Investments [Domain] Investments [Domain] Management fees payable Increase (Decrease) in Management Fee Payable RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Transfers to level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Wells Fargo Financing Facility - for Next Six Months and Thereafter Wells Fargo Financing Facility - For Next Six Months And Thereafter [Member] Wells Fargo Financing Facility - For Next Six Months And Thereafter Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Common shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Yield Method Valuation, Yield Method [Member] Valuation, Yield Method Share Repurchase Program [Domain] Share Repurchase Program [Domain] Notional Amount Notional amount Derivative, Notional Amount Transportation: Consumer Transportation: Consumer Transportation, Consumer [Member] Transportation, Consumer Weighted average common shares outstanding - basic (in shares) Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Amortization of (premium)/accretion of discount, net Accretion (Amortization) of Discounts and Premiums, Investments Debt (net of $8,005 and $8,511 deferred financing and issuance costs, respectively, and net of unamortized discount of $415 and $471, respectively) (See Note 7) Secured Debt Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments AAA Class A-R 2025 Notes AAA Class A-R 2025 Notes [Member] AAA Class A-R 2025 Notes Schedule of Investments [Abstract] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Directors’ fees payable Directors’ Fees Payable Directors’ Fees Payable Interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Fair Value as % of Net Assets Investment Owned, Net Assets, Excluding Cash Equivalents, Percentage Investment Owned, Net Assets, Excluding Cash Equivalents, Percentage Entity Address, City or Town Fair Value Derivative, Fair Value, Net Statement of Financial Position [Abstract] Hotel, Game & Leisure Hotel, Game & Leisure [Member] Hotel, Game & Leisure Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount NCDL Senior Loan Fund I SPV LLC NCDL Senior Loan Fund I LLC [Member] NCDL Senior Loan Fund I LLC Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Annualized Hurdle Rate Investment Advisory Agreement - Incentive Rate Annualized Hurdle Rate [Member] Investment Advisory Agreement - Incentive Rate Annualized Hurdle Rate Net investment income (in dollars per share) Investment Company, Investment Income (Loss), Per Share, Basic Total Commitment Total commitment 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 BBB Class D 2022 Notes BBB Class D 2022 Notes [Member] BBB Class D 2022 Notes Net increase (decrease) in net assets resulting from operations per share - basic and diluted (in dollars per share) Investment Company, Net Asset Value, Per Share, Period Increase (Decrease) United States UNITED STATES INVESTMENTS Schedule of Investments [Text Block] Dividends [Domain] Dividends [Domain] Collateral due to broker Due to Correspondent Brokers Subsequent Event Type [Axis] Subsequent Event Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] S 2025 Q2 Dividends S 2025 Q2 Dividends [Member] S 2025 Q2 Dividends AA Class B-R 2026 Notes AA Class B-R 2026 Notes [Member] AA Class B-R 2026 Notes Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] AA Class B 2023 Notes AA Class B 2023 Notes [Member] AA Class B 2023 Notes Total expenses before incentive fees waived Investment Income, Investment Expense Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Ratio of net expenses to average net assets before waived fees Investment Company, Expense Ratio before Incentive Allocation Amortization of deferred financing or issuance costs Amortization of Debt Issuance Costs Use of Estimates Use of Estimates, Policy [Policy Text Block] Related Party [Axis] Related and Nonrelated Parties [Axis] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Shares issued (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Carrying value Total Outstanding aggregate principal amount Long-Term Debt Net increase (decrease) in net assets resulting from shareholder distributions Investment Company, Dividend Distribution, Increase (Decrease) Investment Company, Dividend Distribution, Increase (Decrease) Aerospace & Defense Aerospace & Defense [Member] Aerospace & Defense Document Period End Date Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Debt securitization Aggregate principal amount Debt Instrument, Face Amount NET ASSETS Equity [Text Block] Security Exchange Name Effective interest rate (as a percent) Debt Instrument, Interest Rate, Effective Percentage Fair value Investment Owned, At Fair Value, Excluding Investments Valued Using Recent Transactions Investment Owned, At Fair Value, Excluding Investments Valued Using Recent Transactions Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Entity Shell Company 2030 Notes Wells Fargo Financing Facility [Member] Wells Fargo Financing Facility Total increase (decrease) in net assets Stockholders' Equity, Period Increase (Decrease) Ratio of net expenses to average net assets after waived fees Investment Company, Expense Ratio, after Fee Waiver and Incentive Fee Deduction Segment Reporting Segment Reporting, Policy [Policy Text Block] Schedule of Investments, Portfolio Composition by Industry at Fair Value and Portfolio Composition by Geographic Composition of Investments at Cost and Fair Value Investment Holdings, Schedule of Investments [Table Text Block] EARNINGS PER SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Receivable for investments sold Increase (Decrease) in Receivable for Investment Sold Per share data: Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Other Borrowing Rates All Other Borrowing Rates [Member] All Other Borrowing Rates Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Line of credit facility, maximum borrowing capacity (as a percent) Line of Credit Facility, Maximum Borrowing Capacity Percentage Line of Credit Facility, Maximum Borrowing Capacity Percentage Sovereign & Public Finance Sovereign & Public Finance [Member] Sovereign & Public Finance Capital share transactions: Investment Company, Capital Share Transaction, Increase (Decrease) [Abstract] Total liabilities Liabilities Trading Symbol JV Credit Facility JV Credit Facility [Member] JV Credit Facility Investment Advisory Agreement - Compensation of the Adviser, Management Fee, Thereafter Investment Advisory Agreement - Compensation Of The Adviser, Management Fee, Thereafter [Member] Investment Advisory Agreement - Compensation Of The Adviser, Management Fee, Thereafter Geographical [Domain] Geographical [Domain] 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] Other (in dollars per share) Investment Company, Other, Per Share Investment Company, Other, Per Share Share Repurchase Plan Share Repurchase Plan [Member] Share Repurchase Plan Quarterly Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, Quarterly Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, Quarterly Catch-Up Threshold Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Revenue Multiple Revenue Multiple [Member] Revenue Multiple Company Selected Measure Name Company Selected Measure Name Sale of Stock [Domain] Sale of Stock [Domain] Schedule of Investments [Table] Schedule of Investments [Table] Fixed interest rate (as a percent) Derivative, Fixed Interest Rate 2024 Debt/ CLO-III CLO-III 2024 Debt Securitization [Member] 2024 Debt Securitization Supplemental disclosure of non-cash flow financing activity: Noncash Investing and Financing Items [Abstract] Net adjustment for hedging transaction Net adjustment for hedging transaction Unrealized Gain (Loss) on Derivatives Equity ownership interest, parent (as a percent) Subsidiary, Ownership Percentage, Parent AAA Class A 2024 Notes AAA Class A 2024 Notes [Member] AAA Class A 2024 Notes Debt Investments Debt Securities [Member] Credit Facility [Domain] Credit Facility [Domain] Asset Class [Domain] Asset Class [Domain] Investment Type Concentration Risk Investment Type Concentration Risk [Member] Investment Type Concentration Risk Related Party Transactions [Abstract] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Deferred Financing Costs and Debt Issuance Costs Debt, Policy [Policy Text Block] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Weighted average common shares outstanding - diluted (in shares) Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Payment in Kind (PIK) Note Payment in Kind (PIK) Note [Member] 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 and Hedging Derivatives, Policy [Policy Text Block] Transfers out of Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Underlying Security Market Price Change Underlying Security Market Price Change, Percent Period of written notice Related Party Transaction, Period Of Written Notice Related Party Transaction, Period Of Written Notice Structured Debt Structured Debt [Member] Structured Debt Amount available Amount Available Line of Credit Facility, Current Borrowing Capacity Fair Value Cash Equivalents Cash Equivalents, Fair Value Disclosure Cash Equivalents, Fair Value Disclosure Schedule of Reconciliation of the Beginning and Ending Balances for Investments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Other general and administrative expenses Other General and Administrative Expense Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Investment Company, Financial Highlights [Roll Forward] Investment Company, Financial Highlights [Roll Forward] Three Month SOFR Three Month SOFR [Member] Three Month SOFR Net expenses after incentive fees waived Investment Company, Net Expenses After Expense Support Investment Company, Net Expenses After Expense Support Award Timing Predetermined Award Timing Predetermined [Flag] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Level 1 Fair Value, Inputs, Level 1 [Member] Number of restricted securities held Number Of Restricted Securities Held Number Of Restricted Securities Held Investment Company, Net Assets [Roll Forward] Investment Company, Net Assets [Roll Forward] Organization, Consolidation and Presentation of Financial Statements [Abstract] Ratio/Supplemental data: Investment Company, Ratio To Average Net Assets And Supplemental Data [Abstract] Investment Company, Ratio To Average Net Assets And Supplemental Data Incentive fees waived (See Note 6) Investment Company, Incentive Fee Waived AA Class B-R 2025 Notes AA Class B-R 2025 Notes [Member] AA Class B-R 2025 Notes Ratio of net investment income to average net assets Investment Company, Investment Income (Loss) Ratio Changes in operating assets and liabilities: Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Incentive fees on net investment income (See Note 6) Income based incentive fees Incentive Fee Expense, Income-Based Media: Advertising, Printing & Publishing Media: Advertising, Printing & Publishing Media, Advertising, Printing & Publishing [Member] Media, Advertising, Printing & Publishing Net fair value adjustment for hedging transaction Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge All Executive Categories All Executive Categories [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Energy: Electricity Energy: Electricity Energy, Electricity [Member] Energy, Electricity Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Unused fees Line of Credit Facility, Commitment Fee Amount Fair Value Long-Term Debt, Fair Value Interest and debt financing expenses Total interest and debt financing expenses Interest and Debt Expense First-Lien Debt Debt Securities, First Lien [Member] Debt Securities, First Lien Asset coverage ratio (as a percent) Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio Reconciliation of cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Investments valued using recent transactions Investment Owned, At Fair Value, Valued Using Recent Transactions Investment Owned, At Fair Value, Valued Using Recent Transactions Concentration Risk Type [Domain] Concentration Risk Type [Domain] Dividends and Distributions to Common Shareholders Investment Company, Distribution [Policy Text Block] Schedule of Computation of Basic and Diluted Earnings Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Amount Outstanding Long-Term Line of Credit Low Minimum [Member] Investment Type [Axis] Investment Type [Axis] Shareholder distributions 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] Liabilities Liabilities [Abstract] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 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] Subordinated Debt Subordinated Debt [Member] Services: Consumer Consumer Sector [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Derivative [Table] Derivative [Table] Net investment income Net investment income Investment Income, Operating, after Expense and Tax Common shares, authorized (in shares) Common stock, shares authorized (in shares) Common Stock, Shares Authorized Dividend income Dividend Income, Operating, Paid in Cash Aerospace & Defense Aerospace and Defense [Member] Aerospace and Defense Schedule of Carrying Value and Fair Value of Debt Obligations Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Exercise Price Award Exercise Price Related Party Transaction [Axis] Related Party Transaction [Axis] Realized and unrealized gain (loss) on investments: Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, after Tax [Abstract] Stock repurchase program, authorized amount Share Repurchase Program, Authorized, Amount AAA Class A-1F 2022 Notes AAA Class A-1F 2022 Notes [Member] AAA Class A-1F 2022 Notes Schedule of Unfunded Commitments to Fund Delayed Draw Loans and Equity Investments Schedule For Financial Support For Nonconsolidated Entity [Table Text Block] Schedule For Financial Support For Nonconsolidated Entity Document Quarterly Report Functional Currency Functional Currency, Policy [Policy Text Block] Functional Currency, Policy 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] Interest Rate Swap Interest Rate Swap [Member] Investment Advisory Agreement - Compensation of the Adviser, Management Fee First Five Quarters Investment Advisory Agreement - Compensation Of The Adviser, Management Fee First Five Quarters [Member] Investment Advisory Agreement - Compensation Of The Adviser, Management Fee First Five Quarters Measurement input Investment Company, Investment Owned, Measurement Input Subordinated Debt, Second Lien Subordinated Debt, Second Lien [Member] Subordinated Debt, Second Lien BORROWINGS Debt Disclosure [Text Block] Amortized Cost Investment Owned, Cost Payment-in-kind interest Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Payment In Kind Interest Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Payment In Kind Interest Interest payable Interest Payable Receivable for investments sold Receivable, Investment, Sale Management fees (See Note 6) Management fees Management Fee Expense Capital gains incentive fees Incentive Fee Expense, Capital-Gain-Based Deferred financing costs Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] CONSOLIDATED FINANCIAL HIGHLIGHTS Investment Company, Financial Highlights [Text Block] Total net change in unrealized appreciation (depreciation) Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction, Operating, after Tax PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Credit spread adjustment (as a percent) Debt Instrument, Credit Spread Adjustment Debt Instrument, Credit Spread Adjustment Measurement Input Type [Domain] Measurement Input Type [Domain] Total 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 of investments Payment for Purchase, Investment, Operating Activity 3 to 5 years Long-Term Debt, Maturity, Year Three To Five Long-Term Debt, Maturity, Year Three To Five Sale of stock, consideration received Sale of Stock, Consideration Received on Transaction Adoption Date Trading Arrangement Adoption Date More than 5 Years Long-Term Debt, Maturity, after Year Five Containers, Packaging & Glass Containers, Packaging and Glass [Member] Containers, Packaging and Glass Environmental Industries Environmental Industries Environmental Industries [Member] Environmental Industries Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Total net assets Net assets, beginning of period Net assets, end of period Net assets, end of period Equity, Attributable to Parent Capital Equipment Capital Equipment Capital Equipment [Member] Capital Equipment Incentive fees payable Incentive Fee Payable Healthcare & Pharmaceuticals Healthcare & Pharmaceuticals [Member] Healthcare & Pharmaceuticals 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 Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] AAA Class A-1 2022 Notes AAA Class A-1 2022 Notes [Member] AAA Class A-1 2022 Notes Additional 2030 Notes Offering Additional 2030 Notes Offering [Member] Additional 2030 Notes Offering Professional fees Professional Fees Insider Trading Policies and Procedures [Line Items] Investment, Issuer Affiliation [Domain] Investment, Issuer Affiliation [Domain] Aggregate fair value of senior secured debt Payments To Acquire Secured Debt Payments To Acquire Secured Debt Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Dividend per share, ordinary (in dollars per share) Common Stock, Dividends, Per Share, Declared, Ordinary Common Stock, Dividends, Per Share, Declared, Ordinary Number of independent directors Number Of Independent Directors Number Of Independent Directors Repayments on debt Repayments of Debt Debt Securities, Fixed Rate Debt Securities, Fixed Rate [Member] Debt Securities, Fixed Rate COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Hedged Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag Hedged Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag Hedged Liability Statement Of Financial Position Extensible Enumeration Not Disclosed Flag Entity Central Index Key Class A-L-R 2025 Loans Class A-L-R 2025 Loans [Member] Class A-L-R 2025 Loans Weighted Average Weighted Average [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] 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] AA Class B 2022 Notes AA Class B 2022 Notes [Member] AA Class B 2022 Notes Income Taxes Income Tax, Policy [Policy Text Block] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Less than 1 Year Long-Term Debt, Maturity, Remainder of Fiscal Year Wholesale Wholesale Wholesale [Member] Wholesale Shareholder distributions: Investment Company, Distribution to Shareholders [Abstract] Income Statement [Abstract] Net Assets: (See Note 9) Equity, Attributable to Parent [Abstract] Document Transition Report Ownership [Axis] Ownership [Axis] Construction & Building Construction & Building Construction & Building [Member] Construction & Building Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Investments [Line Items] Schedule of Investments [Line Items] Investment, Name [Axis] Investment, Name [Axis] Expenses: Operating Expenses [Abstract] Dividend per share, special (in dollars per share) Common Stock, Dividends, Per Share, Declared, Special Common Stock, Dividends, Per Share, Declared, Special Services: Consumer Services, Consumer [Member] Services, Consumer Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Total net realized and unrealized gain (loss) on investments Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, after Tax Non-controlled/non-affiliated company investments Net change in unrealized (appreciation) depreciation on investments Debt and Equity Securities, Unrealized Gain (Loss) Interest rate (as a percent) Debt Instrument, Basis Spread on Variable Rate S 2025 Q1 Dividends S 2025 Q1 Dividends [Member] S 2025 Q1 Dividends Spread above reference rate Effective interest rate (as a percent) Investment, Basis Spread, Variable Rate City Area Code Variable Rate [Domain] Variable Rate [Domain] Non Qualifying Assets Non Qualifying Assets [Member] Non Qualifying Assets AAA Class A-L 2022 Loans to CLO-I AAA Class A-L 2022 Loans To CLO-I [Member] AAA Class A-L 2022 Loans To CLO-I All Individuals All Individuals [Member] SUBSEQUENT EVENTS Subsequent Events [Text Block] Revolving Credit Facility Senior Secured Revolving Credit Agreement [Member] Senior Secured Revolving Credit Agreement 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] Subordinated 2026 Notes Subordinated 2026 Notes [Member] Subordinated 2026 Notes Net realized gain (loss) on non-controlled/non-affiliated company investments Net realized (gain) loss on investments Debt and Equity Securities, Realized Gain (Loss) Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Wells Fargo Financing Facility - Daily Undrawn Amounts During the Period Wells Fargo Financing Facility - Daily Undrawn Amounts During The Period [Member] Wells Fargo Financing Facility - Daily Undrawn Amounts During The Period Line of credit facility, unused capacity, commitment fee percentage, less than forty percent of total commitments (as a percent) Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, Less Than Forty Percent Of Total Commitments Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, Less Than Forty Percent Of Total Commitments Statement [Line Items] Statement [Line Items] Total assets Assets Entity [Domain] Pre-Incentive Fee Net Investment Income below Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold CLO-III 2024 Notes CLO-III 2024 Notes [Member] CLO-III 2024 Notes Per share market value, end of period (in dollars per share) Investment Company, Market Value, Per Share AAA Class A-L-B 2023 Loans to CLO-II AAA Class A-L-B 2023 Loans To CLO-II [Member] AAA Class A-L-B 2023 Loans To CLO-II Industry Sector [Axis] Industry Sector [Axis] Consumer Goods: Non-durable Consumer Goods: Non-durable Consumer Goods Non-Durable [Member] Consumer Goods Non-Durable Other assets Increase (Decrease) in Other Operating Assets PEO PEO [Member] Containers, Packaging & Glass Containers, Packaging & Glass [Member] Containers, Packaging & Glass Six Month SOFR Six Month SOFR [Member] Six Month SOFR Daily weighted average principal amount (as a percent) Management and Service Fees, Rate Par Amount Investment Owned, Balance, Principal Amount Measurement Basis [Axis] Measurement Basis [Axis] Cash Equivalents Cash Equivalents [Member] Amortized cost Cost Cost Investment Owned, Cost, Excluding Cash Equivalents Investment Owned, Cost, Excluding Cash Equivalents Advisor and Administrator Advisor And Administrator [Member] Advisor And Administrator 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] Cash equivalents Cash equivalents Cost Cash Equivalents, at Carrying Value Subsequent Event Type [Domain] Subsequent Event Type [Domain] O 2026 Q3 Dividends O 2026 Q3 Dividends [Member] O 2026 Q3 Dividends Revolving Credit Facility [Member] Valuation of Portfolio Investments Fair Value Measurement, Policy [Policy Text Block] Investment Company [Abstract] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Net increase (decrease) in net assets resulting from operations (in dollars per share) Investment Company, Investment Income (Loss) from Operations, Per Share Schedule of Valuation Techniques and Significant Unobservable Inputs Used in Level 3 Fair Value Measurements of Assets 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] Investment Owned at Fair Value Investment Owned At Fair Value [Member] Investment Owned At Fair Value Payments of deferred financing costs Payments of Debt Issuance Costs Utilities: Water Utilities: Water Utilities, Water [Member] Utilities, Water Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Investment Advisory Agreements Investment Advisory Agreements [Member] Investment Advisory Agreements Interest income Interest Income, Operating, Paid in Cash Total return based on net asset value Investment Company, Total Return Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Amortization of deferred financing costs and original issue discount Amortization Of Debt Issuance Costs And Original Issue Discount Amortization Of Debt Issuance Costs And Original Issue Discount Ownership [Domain] Ownership [Domain] AA Class B 2024 Notes AA Class B 2024 Notes [Member] AA Class B 2024 Notes Services: Business Services: Business Services, Business [Member] Services, Business Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] JV Partner JV Partner [Member] JV Partner Unused Portion Line of Credit Facility, Remaining Borrowing Capacity Unused commitment fee (as a percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Unrealized Appreciation (Depreciation) Derivative, Change In Unrealized Appreciation (Depreciation) Derivative, Change In Unrealized Appreciation (Depreciation) Payments to acquire interest in joint venture Payments to Acquire Interest in Joint Venture Financial Instruments [Domain] Financial Instruments [Domain] Total return based on market value Investment Company, Total Return, Market Value O 2026 Q2 Dividends O 2026 Q2 Dividends [Member] O 2026 Q2 Dividends Non-controlled/non-affiliated company investments, at fair value (cost of $1,971,534 and $2,001,207, respectively) Fair Value Investment Owned, Fair Value, Excluding Cash Equivalents Investment Owned, Fair Value, Excluding Cash Equivalents Market Yield Discount Rates Market Yield Discount Rates 2 [Member] Market Yield Discount Rates 2 Other income Other Income Derivative asset, at fair value (Note 4) Derivative asset Derivative Asset Repurchases of common shares Stock Repurchased During Period, Value Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Period of agreement will remain in effect Related Party Transaction, Initial Term Related Party Transaction, Initial Term Fair Value Estimate of Fair Value Measurement [Member] Interest payable Increase (Decrease) in Interest Payable, Net 2026 Debt/ CLO-II 2026 Debt Securitization [Member] 2026 Debt Securitization Schedule of Financial Highlights Investment Company, Financial Highlights [Table Text Block] Cash Cash Cash Payment-in-kind interest Paid-In-Kind Interest, Noncash Paid-In-Kind Interest, Noncash Schedule of Contractual Maturities of Debt Obligations Schedule of Maturities of Long-Term Debt [Table Text Block] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Sale of Stock [Axis] Sale of Stock [Axis] 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] EBITDA Multiple EBITDA Multiple [Member] EBITDA Multiple Schedule of Dividends Declared Dividends Declared [Table Text Block] Current Fiscal Year End Date Upfront Payments/Receipts Derivative, Upfront Payments (Receipts) Derivative, Upfront Payments (Receipts) Shares/Units Investment Owned, Balance, Shares Proceeds from debt Proceeds collected, including principal and interest Proceeds from Issuance of Debt CLO-II Refinancing [Member] CLO-II Refinancing Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Related Party Transaction [Domain] Related Party Transaction [Domain] Automotive Automotive [Member] Automotive At The Market Offering At The Market Offering [Member] At The Market Offering 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] Dividend per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Securities Act File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Ratio of interest and debt financing expenses to average net assets (as a percent) Investment Company, Interest and Debt Financing Expense Ratio Investment Company, Interest and Debt Financing Expense Ratio Fair Value Investments at fair value Total investments and cash equivalents Investment Owned, Fair Value Equity Investments Equity Equity Securities [Member] A Class C 2022 Notes A Class C 2022 Notes [Member] A Class C 2022 Notes Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Administration fees (See Note 6) Administration fees Administrative Fees Expense Common shares, issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Accretion of original issue discount Amortization of Debt Discount (Premium) 2030 Notes 6.650% Notes due March 2030 [Member] 6.650% Notes due March 2030 Sovereign & Public Finance Sovereign and Public Finance [Member] Sovereign and Public Finance Increase (decrease) in net assets resulting from operations: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract] Percent of Net Assets Investment Owned And Cash Equivalents, Net Assets, Percentage Investment Owned And Cash Equivalents, Net Assets, Percentage Equity Offering Costs Offering Costs [Policy Text Block] Organization And Offering Costs AAA Class A-L-A 2023 to CLO-II AAA Class A-L-A 2023 To CLO-II [Member] AAA Class A-L-A 2023 to CLO-II Related Party Related Party [Member] Class of Stock [Line Items] Class of Stock [Line Items] Healthcare & Pharmaceuticals Healthcare and Pharmaceuticals [Member] Healthcare and Pharmaceuticals Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Telecommunications Telecommunications Telecommunications [Member] Telecommunications Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Unamortized discount Debt Instrument, Unamortized Discount Termination Date Trading Arrangement Termination Date CLO-III [Member] CLO-III AAA Class A-1 2023 Notes AAA Class A-1 2023 Notes [Member] AAA Class A-1 2023 Notes Germany GERMANY Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Distributions payable Non-cash Flow Financing Distributions Payable Non-cash Flow Financing Distributions Payable Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Distributions payable Distribution Payable MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] AA Class X 2025 Notes AAA Class X 2025 Notes [Member] AAA Class X 2025 Notes Proceeds from principal repayments and sales of investments Proceeds from Disposition of Investment, Operating Activity Document Type Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value as of Grant Date Award Grant Date Fair Value Net asset value per share (in dollars per share) Net asset value, beginning of period (in dollars per share) Net asset value, end of period (in dollars per share) SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Income tax (provision) benefit Unrealized Gain (Loss), Investment and Derivative, Operating, Tax Expense (Benefit) Interest rate, PIK Investment, Interest Rate, Paid in Kind Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plan Share Repurchase Program, Remaining Authorized, Amount Market Approach Valuation, Market Approach [Member] Valuation, Market Approach Open Swap Contract, Identifier [Axis] Open Swap Contract, Identifier [Axis] Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Local Phone Number Canada CANADA Entity Address, Postal Zip Code Entity Registrant Name Investment Advisory Agreement - Cumulative Pre-Incentive Fee Net Return Investment Advisory Agreement - Cumulative Pre-Incentive Fee Net Return [Member] Investment Advisory Agreement - Cumulative Pre-Incentive Fee Net Return Proceeds from principal repayments and sales of investments 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 Subordinated 2023 Notes Subordinated 2023 Notes [Member] Subordinated 2023 Notes Restricted Security Restricted Security [Member] Restricted Security Net change in unrealized gain (loss) (in dollars per share) Investment Company, Unrealized Gain (Loss) on Investment, Per Share AAA Class X 2023 Notes AAA Class X 2023 Notes [Member] AAA Class X 2023 Notes Banking, Finance, Insurance, Real Estate Banking, Finance, Insurance & Real Estate Banking, Finance, Insurance & Real Estate [Member] Banking, Finance, Insurance & Real Estate Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Hotel, Gaming & Leisure Hotel, Gaming And Leisure [Member] Hotel, Gaming And Leisure Commitments and contingencies (See Note 8) Commitments and Contingencies Net change in unrealized appreciation (depreciation): Unrealized Gain (Loss), Investment and Derivative, Operating, before Tax [Abstract] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Distributions declared from distributable earnings Investment Company, Dividend Distribution Payment-in-kind interest income Interest Income, Operating, Paid in Kind Executive Category: Executive Category [Axis] CLO-II [Member] CLO-II All Award Types Award Type [Domain] Quarterly Hurdle Rate Investment Advisory Agreement - Incentive Rate Quarterly Hurdle Rate [Member] Investment Advisory Agreement - Incentive Rate Quarterly Hurdle Rate Transportation: Cargo Transportation: Cargo Transportation, Cargo [Member] Transportation, Cargo Net realized gain (loss) (in dollars per share) Investment Company, Realized Gain (Loss) on Investment, Per Share Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Fair Value Option, Disclosures [Table] Fair Value Option, Disclosures [Table] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Financial Support for Nonconsolidated Legal Entity [Line Items] Financial Support for Nonconsolidated Legal Entity [Line Items] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Total number of shares repurchased (in shares) Treasury Stock, Shares, Acquired Subordinated 2025 Notes Subordinated 2025 Notes [Member] Subordinated 2025 Notes Equity ownership interest, noncontrolling owner (as a percent) Subsidiary, Ownership Percentage, Noncontrolling Owner Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities PEO Name PEO Name Geographical [Axis] Geographical [Axis] Non-Accrual Loans Non-Accrual Loans [Member] Non-Accrual Loans Restricted cash Restricted Cash Measured at NAV Fair Value Measured at Net Asset Value Per Share [Member] High Tech Industries High Tech Industries High Tech Industries [Member] High Tech Industries Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Axis] Cash paid during the period for taxes Income Tax Paid, before Refund Received Average interest rate Line of Credit Facility, Interest Rate During Period Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Exceeds Catch-Up Threshold Directors’ fees payable Increase (Decrease) In Directors’ Fees Payable Increase (Decrease) In Directors’ Fees Payable Other assets Other Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Legal Entity [Axis] Carrying Value Hedged Liability, Fair Value Hedge CLO-I 2022 Debt Securitization [Member] 2022 Debt Securitization AAA Class A-L-R 2025 Loans to CLO-I AAA Class A-L-R 2025 Loans to CLO-I [Member] AAA Class A-L-R 2025 Loans to CLO-I Approximate Dollar Value of Shares that have been Purchased Under the Plan Treasury Stock, Value, Acquired, Cost Method Cash and cash equivalents and restricted cash, beginning of period Cash and cash equivalents and restricted cash, end of period Total cash and cash equivalents shown on the consolidated statements of cash flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Management fees payable Management Fee Payable Net assets Investment Owned, Percent of Net Assets, Amount Investment Owned, Percent of Net Assets, Amount Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Incentive fee (as a percent) Management and Service Fees, Incentive Rate Dividend per share, supplemental (in dollars per share) Common Stock, Dividends, Per Share, Declared, Supplemental Common Stock, Dividends, Per Share, Declared, Supplemental Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] 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] Subsequent Event [Table] Subsequent Event [Table] EBITDA Multiple EBITDA Multiple 2 [Member] EBITDA Multiple 2 Investment, Name [Domain] Investment, Name [Domain] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Measurement Input Type [Axis] Measurement Input Type [Axis] Repurchases of common shares Payments for Repurchase of Common Stock Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Base management fee (as a percent) Management and Service Fees, Base Rate Chemicals, Plastics, & Rubber Chemicals, Plastics & Rubber Chemicals, Plastics & Rubber [Member] Chemicals, Plastics & Rubber Award Type Award Type [Axis] Amortization of premium/accretion of discount, net Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Accretion (Amortization) Of Discounts And Premiums Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Accretion (Amortization) Of Discounts And Premiums Cumulative Hedging Adjustments Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Schedule of Shares Repurchased Class of Treasury Stock [Table Text Block] Total net change in unrealized appreciation (depreciation) Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Total distributable earnings (loss) Retained Earnings (Accumulated Deficit) Payable for investments purchased Increase (Decrease) in Payable for Investment Purchased 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] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Total unfunded commitments Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount Fair Value Measurement [Domain] Fair Value Measurement [Domain] Administration fees payable Administrative Fees Payable Administrative Fees Payable Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] United Kingdom UNITED KINGDOM Borrowing 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] Investment income (as a percent) % of Fair Value % of Total Investments at Fair Value Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Equity Awards Adjustments Equity Awards Adjustments [Member] Incentive fee payable Increase (Decrease) in Incentive Fee Payable Total liabilities and net assets Liabilities and Equity Media: Diversified & Production Media: Diversified & Production Media, Diversified & Production [Member] Media, Diversified & Production Collateral due to broker Increase (Decrease) in Payable to Broker-Dealer and Clearing Organization Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fee payable Incentive Fee Payable, Income-Based Purchase of investments and other adjustments to cost Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Interest receivable payment on swap transaction Interest Receivable Payment on Swap Transaction Interest Receivable Payment on Swap Transaction Industry Sector [Domain] Industry Sector [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Asset Class [Axis] Asset Class [Axis] Related Party [Domain] Related and Nonrelated Parties [Domain] Fair Value as % of Net Assets Percent of net assets Investment Owned, Net Assets, Percentage Market Yield Discount Rates Market Yield Discount Rates [Member] Market Yield Discount Rates Net increase (decrease) in net assets resulting from capital share transactions Investment Company, Capital Share Transaction, Increase (Decrease) Tabular List, Table Tabular List [Table Text Block] Number of board members Number Of Board Members Number Of Board Members Paid-in-capital in excess of par value Additional Paid in Capital Consumer Goods: Durable Consumer Goods: Durable Consumer Goods Durable [Member] Consumer Goods Durable CLO-I Refinancing CLO-I Refinancing [Member] CLO-I Refinancing Name Awards Close in Time to MNPI Disclosures, Individual Name Average daily borrowings Line of Credit Facility, Average Outstanding Amount Debt Securities, Variable Rate Debt Securities, Variable Rate [Member] Debt Securities, Variable Rate Investment, Identifier [Axis] Investment, Identifier [Axis] 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] Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (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 AAA Class A-R 2026 Notes AAA Class A-R 2026 Notes [Member] AAA Class A-R 2026 Notes DERIVATIVES Derivatives and Fair Value [Text Block] Shareholder distributions (in dollars per share) Investment Company, Distribution to Shareholders, Per Share Subordinated 2024 Notes Subordinated 2024 Notes [Member] Subordinated 2024 Notes Adjustment to Compensation: Adjustment to Compensation [Axis] 2025 Debt /CLO-I 2025 Debt Securitization [Member] 2025 Debt Securitization Percent of Net Assets Cash Equivalents, Net Assets, Percentage Cash Equivalents, Net Assets, Percentage Share Repurchase Program [Axis] Share Repurchase Program [Axis] O 2025 Q3 Dividends O 2025 Q3 Dividends [Member] O 2025 Q3 Dividends 2026 Debt Securitization Refinancing 2026 Debt Securitization Refinancing [Member] 2026 Debt Securitization Refinancing 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] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total Assets, Fair Value Disclosure Investment Transactions Investment, Policy [Policy Text Block] Name Measure Name Recent Transactions Valuation, Recent Transactions [Member] Valuation, Recent Transactions Pay vs Performance Disclosure [Line Items] Per share data: Investment Company, Per Share Data [Abstract] Investment Company, Per Share Data Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Utilities: Electric Utilities: Electric Utilities, Electric [Member] Utilities, Electric Automotive Automotive Sector [Member] Dividends [Axis] Dividends [Axis] Interest receivable Interest Receivable Name Trading Arrangement, Individual Name Subordinated Debt, Mezzanine Debt Subordinated Debt, Mezzanine Debt [Member] Subordinated Debt, Mezzanine Debt Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Investments Investment Owned, Balance [Abstract] Investments, Debt and Equity Securities [Abstract] Net change in unrealized appreciation (depreciation) on non-controlled/non-affiliated company investments still held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Shares/Units Cash Equivalents, Shares Cash Equivalents, Shares Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Total investment income Gross Investment Income, Operating Beverage, Food & Tobacco Beverage, Food & Tobacco Beverage, Food & Tobacco [Member] Beverage, Food & Tobacco Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Number of portfolio companies Number Of Portfolio Companies Number Of Portfolio Companies Excise taxes Investment Income, Operating, Tax Expense (Benefit) Net realized gain (loss) on investments Realized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Fee waived Investment Company, Incentive Fee Waived, Income-Based Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Portfolio turnover rate Investment Company, Portfolio Turnover Realized Capital Gains Investment Advisory Agreement - Incentive Rate, Realized Capital Gains [Member] Investment Advisory Agreement - Incentive Rate, Realized Capital Gains Net increase (decrease) in net assets resulting from operations 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] S 2026 Q2 Dividends S 2026 Q2 Dividends [Member] S 2026 Q2 Dividends Total Investments [Member] Bridge Loan Bridge Loan [Member] Statement [Table] Statement [Table] 1 to 3 years Long-Term Debt, Maturity, Year One To Three Long-Term Debt, Maturity, Year One To Three Restatement Determination Date: Restatement Determination Date [Axis] Aggregate principal balance Debt Instrument, Redemption Amount Debt Instrument, Redemption Amount Floating interest rate (as a percent) Derivative, Basis Spread on Variable Rate Investment income: Revenues [Abstract] Directors' fees Directors' Fees Directors' Fees Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract]