Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Debt Agreement Events [Axis] Debt Agreement Events [Axis] Debt Agreement Events Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Quarterly Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Quarterly Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Quarterly Catch-Up Threshold Commitment Fee, First Twelve Months Commitment Fee, First Twelve Months [Member] Commitment Fee, First Twelve Months Performance Based Investment Advisory Agreement - Incentive Fee, Performance Based [Member] Investment Advisory Agreement - Incentive Fee, Performance Based Number of components Related Party Transaction, Number Of Components Related Party Transaction, Number Of Components Title of 12(b) Security Subsequent Event Subsequent Event [Member] Net Carrying Value Reported Value Measurement [Member] Management fee payable Asset Acquisition, Management Fee Payable Asset Acquisition, Management Fee Payable Fair Value Derivative Assets (Liabilities), at Fair Value, Net Adjustment to Compensation, Amount Adjustment to Compensation Amount Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Buildings & Real Estate Buildings & Real Estate Buildings & Real Estate [Member] Buildings & Real Estate Financial Instrument [Axis] Financial Instrument [Axis] March 2030 Notes March 2030 Notes [Member] March 2030 Notes June 2026 Notes June 2026 Notes [Member] June 2026 Notes Payable for investments purchased Payable, Investment, Purchase Market Adjustment Factor Measurement Input, AUM Multiple [Member] Measurement Input, AUM Multiple Schedule of Fair Value Hierarchy of Investments Fair Value, Assets Measured on Recurring Basis [Table Text Block] Foreign currency transactions Realized loss recognized Realized Gain (Loss), Foreign Currency Transaction, before Tax Asset Based Lending and Fund Finance Asset based lending and fund finance Asset Based Lending And Fund Finance [Member] Asset Based Lending And Fund Finance Derivative Instrument [Axis] Derivative Instrument [Axis] Non-controlled, affiliated investments Investment, Affiliated Issuer, Noncontrolled [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Non-qualifying assets as a percent of total assets Non-Qualifying Assets, Percent Of Net Assets Non-Qualifying Assets, Percent Of Net Assets Average price paid per share (in USD per share) Shares Acquired, Average Cost Per Share Entity Common Stock, Shares Outstanding Interest and PIK Interest Income Interest Income, Operating And Paid In Cash Interest Income, Operating And Paid In Cash Consolidated Entities [Domain] Consolidated Entities [Domain] Foreign currency forward contract GBP Pound Sterling Foreign Currency Forward Contract [Member] Pound Sterling Foreign Currency Forward Contract Agreements and Related Party Transactions Related Party Transactions Disclosure [Text Block] Investment Company, Nonconsolidated Subsidiary [Axis] Investment Company, Nonconsolidated Subsidiary [Axis] Listing advisory fees Investment Advisory Fee Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Asset Acquisition [Axis] Asset Acquisition [Axis] Net accretion/amortization of discount/premium on investments Accretion (Amortization) of Discounts and Premiums, Investments Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Athena CLO II AA(sf) Class B-R Notes Athena CLO II AA(sf) Class B-R Notes [Member] Athena CLO II AA(sf) Class B-R Notes Entity Address, City or Town Cash and cash equivalents Asset Acquisition, Cash And Equivalents Asset Acquisition, Cash And Equivalents Statement 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Specialty Finance [Member] ABF - Specialty Finance Subsequent Event Type [Axis] Subsequent Event Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Interest Income, Paid In Kind Interest Income, Paid In Kind [Member] Interest Income, Paid In Kind Foreign currency forward contract EUR Foreign Currency Forward Contract EUR [Member] Foreign Currency Forward Contract EUR Quarterly Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, Before Exchange Listing, Quarterly Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, Before Exchange Listing, Quarterly Catch-Up Threshold Taxes, including excise tax, paid during the period Income Taxes Paid, Including Excise Taxes Income Taxes Paid, Including Excise Taxes CLO 2020-1 Refinancing AAA(sf) Class A-2R Notes CLO 2020-1 Refinancing AAA(sf) Class A-2R Notes [Member] CLO 2020-1 Refinancing AAA(sf) Class A-2R Notes Use of Estimates Use of Estimates, Policy [Policy Text Block] Capital Markets Capital Markets [Member] Capital Markets Related Party [Axis] Related and Nonrelated Parties [Axis] Realized Capital Gains Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Realized Capital Gains [Member] Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Realized Capital Gains Document Period End Date Athena CLO IV Class C Notes Athena CLO IV Class C Notes [Member] Athena CLO IV Class C Notes Subsidiaries Subsidiaries [Member] Quarterly Hurdle Rate Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Quarterly Hurdle Rate [Member] Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Quarterly Hurdle Rate Preferred outstanding (in shares) Preferred Stock, Shares Outstanding Aggregate Principal Committed Aggregate principal committed Debt Instrument, Face Amount Specialty finance equity investments Specialty Finance Specialty Finance Equity Investments [Member] Specialty Finance Equity Investments Foreign cash (cost of $3,435 and $709, respectively) Cash and Cash Equivalent, Held in Foreign Currency Diversified Support Services Diversified Support Services Diversified Support Services [Member] Diversified Support Services Levels 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Position [Axis] Position [Axis] Foreign currency forward contract EUR 2 Foreign Currency Forward Contract EUR 2 [Member] Foreign Currency Forward Contract EUR 2 Variable Rate Component [Domain] Variable Rate Component [Domain] Variable Rate Component [Domain] Entity Shell Company Athena CLO V Class B-1 Notes Athena CLO V Class B-1 Notes [Member] Athena CLO V Class B-1 Notes Ratio of total expenses to average net assets Investment Company, Expense Ratio, after Fee Waiver and Incentive Fee Deduction Schedule of Investments Investment Holdings, Schedule of Investments [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] BASIC AND DILUTED PER COMMON SHARE: Earnings Per Share [Abstract] Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Capital Share Transactions Investment Company, Capital Share Transaction, Increase (Decrease) [Abstract] Total Liabilities Total Liabilities Total Liabilities Liabilities Trading Symbol Investment Owned, At Fair Value Investment Owned, At Fair Value [Member] Investment Owned, At Fair Value Period in force of share repurchase program Share Repurchase Program, Period in Force Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Derivative, fixed interest rate Derivative, Fixed Interest Rate Debt Agreement Events [Domain] Debt Agreement Events [Domain] Debt Agreement Events [Domain] Total Cost Of BOCSO's Portfolio Total Cost Of BOCSO's Portfolio [Member] Total Cost Of BOCSO's Portfolio Credit Facility [Domain] Credit Facility [Domain] Amortized cost Asset Acquisition, Investments, Amortized Cost Asset Acquisition, Investments, Amortized Cost Cash Flows from Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Ratio of total expenses to average net assets Investment Company, Expense Ratio Before Management Fee Waiver And Recoupment Expenses Paid Investment Company, Expense Ratio Before Management Fee Waiver And Recoupment Expenses Paid Schedule of Investment Income Investment Income [Table Text Block] Investment Advisory Agreement Investment Advisory Agreement [Member] Investment Advisory Agreement Debt (net of deferred financing costs of $47,082) Asset Acquisition, Long-Term Debt Asset Acquisition, Long-Term Debt Interest and dividend receivable Dividend and Interest Receivable Financial Support to Nonconsolidated Legal Entity [Axis] Financial 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Forward Contract [Member] Euro Foreign Currency Forward Contract Thrifts & Mortgage Finance Thrifts & Mortgage Finance Thrifts & Mortgage Finance [Member] Thrifts & Mortgage Finance Affiliated Entity Affiliated Entity [Member] Unsecured notes, carrying value Unsecured Debt Diversified Consumer Services Consumer Sector [Member] Administration Agreement Administration Agreement [Member] Administration Agreement Specialty finance equity commitments Specialty Finance Equity Commitments [Member] Specialty Finance Equity Commitments Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Middle Market Loans Middle Market Loans [Member] Middle Market Loans Net Investment Income (Loss) After Taxes Net investment income (loss) Investment Income, Operating, after Expense and Tax Debt agreement event three Debt Agreement, Event Three [Member] Debt Agreement, Event Three Schedule of Product Information [Table] Nature of Operation, Product Information, 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Statement [Line Items] Total Assets Total Assets Assets Total Portfolio Concentration Total Portfolio Concentration [Member] Total Portfolio Concentration Net investment income (loss) Investment Income, Net Industry Sector [Axis] Industry Sector [Axis] Total Interest Expense Interest Expense, Nonoperating Foreign currency forward contract EUR 1 Foreign Currency Forward Contract EUR 1 [Member] Foreign Currency Forward Contract EUR 1 Annualized Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Annualized Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Annualized Catch-Up Threshold PEO PEO [Member] After 5 years Contractual Obligation, to be Paid, after Year Five Second-lien senior secured debt investments Second-lien senior secured debt investments Second-Lien Senior Secured Debt Securities, Second Lien [Member] Debt Securities, Second Lien Capital commitment unfunded Investment Company, Committed Capital Unfunded Investment Company, Committed Capital Unfunded Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Transfers Investments in and Advances to Affiliates, at Fair Value, Period Increase (Decrease) Net operating expenses Operating Expenses Systems Software Systems Software Systems Software [Member] Systems Software Revolving loan commitments Revolving Credit Facility [Member] Net increase (decrease) in net assets resulting from operations (in USD per share) Investment Company, Investment Income (Loss) from Operations, Per Share Common stock, shares, outstanding (in shares) Shares outstanding, end of period (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Earnings Per Share - Diluted (in USD per share) Earnings (loss) per common share-diluted (in USD per share) Earnings Per Share, Diluted (Increase) decrease in prepaid expenses and other assets Increase 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Issuance of Debt Hedged Items Hedging Item [Member] Hedging Item Related Party Transaction [Domain] Related Party Transaction [Domain] Foreign currency forward contract GBP Foreign Currency Forward Contract GBP [Member] Foreign Currency Forward Contract GBP Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Investments at fair value Fair Value Beginning balance Ending balance Investment Owned, Fair Value Equity Securities Equity Securities [Member] Wireless Telecommunication Services Wireless Telecommunication Services [Member] Wireless Telecommunication Services Professional Services Professional Services Professional Services [Member] Professional Services Common stock, shares, issued (in shares) Common Stock, Shares, Issued Fair value, beginning of period Fair Value, End of Period Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Organization Business Description and Basis of Presentation [Text Block] Increase to carrying value of the notes Debt Instrument, Increase (Decrease), Net Product and Service [Domain] Product and Service [Domain] Application Software Application Software [Member] Application Software September 2028 Notes September 2028 Notes September 2028 Notes [Member] September 2028 Notes Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Termination Date Trading Arrangement Termination Date Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Transfers into (out of) Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net Fair Value as of Grant Date Award Grant Date Fair Value Redemption price, percentage Debt Instrument, Redemption Price, Percentage Income tax (provision) benefit 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[Axis] Statistical Measurement [Axis] Canadian Dollar Foreign Currency Forward Contract 10/3/2026 Canadian Dollar Foreign Currency Forward Contract 10/13/2026 [Member] Canadian Dollar Foreign Currency Forward Contract 10/13/2026 Management fee percentage Management and Service Fees, Base Rate Schedule of Derivative Instruments, Gain (Loss) Derivative Instruments, Gain (Loss) [Table Text Block] Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Cash (including restricted and foreign cash) Cash And Cash Equivalents, Restricted Cash And Cash Held In Foreign Currency, Fair Value Disclosure Cash And Cash Equivalents, Restricted Cash And Cash Held In Foreign Currency, Fair Value Disclosure Net change in unrealized gain (loss) Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Total accumulated undistributed earnings Retained Earnings (Accumulated Deficit) Product and 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Harness Inc. [Member] Harness Inc. Debt commitments Debt Commitments [Member] Debt Commitments Athena CLO II AAA(sf) Class A-R Notes Athena CLO II AAA(sf) Class A-R Notes [Member] Athena CLO II AAA(sf) Class A-R Notes Commitment Fee, Period [Axis] Commitment Fee, Period [Axis] Commitment Fee, Period Schedule of Shares Distributed, Dividend Reinvestment Plan Schedule Of Shares Distributed, Dividend Reinvestment Plan [Table Text Block] Schedule Of Shares Distributed, Dividend Reinvestment Plan Investment Income Revenues [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Financial Support to Nonconsolidated Legal Entity [Domain] Financial Support to Nonconsolidated Legal Entity [Domain] Specialty finance debt investments Specialty Finance Specialty Finance Debt Investments [Member] Specialty Finance Debt Investments Asset Acquisition [Table] Asset Acquisition [Table] Statistical Measurement [Domain] Statistical Measurement [Domain] Net change in unrealized gain (loss): Net UnRealized Gains Losses [Abstract] Net UnRealized Gains Losses Commitment Fee, Period [Domain] Commitment Fee, Period [Domain] Commitment Fee, Period [Domain] Capital Markets Capital Market [Member] Capital Market Document Fiscal Year Focus Option Pricing Model Valuation Technique, Option Pricing Model [Member] O 2026 Q3 Supplemental Dividends O 2026 Q3 Supplemental Dividends [Member] O 2026 Q3 Supplemental Dividends Payment-in-kind Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Payment-In-Kind Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Payment-In-Kind Common shares $0.01 par value, 1,000,000,000 shares authorized; 457,612,537 and 464,047,623 shares issued and outstanding, respectively Common Stock, Value, Issued Interest expense Interest Expense, Operating and Nonoperating Schedule of Debt Obligations Schedule of Long-Term Debt Instruments [Table Text Block] Variable Rate Component, Three Variable Rate Component, Three [Member] Variable Rate Component, Three Line of Credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Amergin AssetCo Amergin AssetCo [Member] Amergin AssetCo Non-controlled, non-affiliated investments Investment, Unaffiliated Issuer [Member] Threshold investment percentage Investment Company, Technology-Related Companies, Investment Threshold Investment Company, Technology-Related Companies, Investment Threshold December 2025 Notes March 2028 Notes December 2025 Notes [Member] December 2025 Notes Before Exchange Listing Investment Advisory Agreement, Incentive Rate, Before Exchange Listing, Annualized Cath-up Threshold [Member] Investment Advisory Agreement, Incentive Rate, Before Exchange Listing, Annualized Cath-up Threshold South US South Region [Member] Amendment Flag Athena CLO II Class A Notes Athena CLO II Class A Notes [Member] Athena CLO II Class A Notes 2026 Stock Repurchase Program 2026 Stock Repurchase Program [Member] 2026 Stock Repurchase Program Quarterly Hurdle Rate Investment Advisory Agreement - Incentive Rate, Before Exchange Listing, Quarterly Hurdle Rate [Member] Investment Advisory Agreement - Incentive Rate, Before Exchange Listing, Quarterly Hurdle Rate Net Investment Income (Loss) Before Taxes Net Investment Income Investment income Net Investment Income Market Yield Measurement Input, Gross Profit Multiple [Member] Measurement Input, Gross Profit Multiple Investments [Domain] Investments [Domain] Increase (decrease) in management fee payable Increase (Decrease) in Management Fee Payable Athena CLO II AA(sf) Class B-1 Notes Athena CLO II AA(sf) Class B-1 Notes [Member] Athena CLO II AA(sf) Class B-1 Notes Issuance of common shares in connection with the Mergers Stock Issued During Period, Value, Acquisitions Equity Commitment Equity Commitment [Member] Equity Commitment Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Athena CLO II Refinancing Athena CLO II Refinancing [Member] Athena CLO II Refinancing Entity Address, State or Province Athena Funding I LLC Athena Funding I LLC [Member] Athena Funding I LLC Aerospace & Defense Aerospace & Defense Aerospace Sector [Member] PEO Total Compensation Amount PEO Total Compensation Amount Total Debt Line of Credit Facility, Maximum Borrowing Capacity And Debt Instrument, Face Amount Line of Credit Facility, Maximum Borrowing Capacity And Debt Instrument, Face Amount Specialty Retail Retail Sector [Member] Specialty Retail Specialty Retail [Member] Specialty Retail Increase (decrease) in accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Foreign currency forward contract CAD Canadian Dollar Foreign Currency Forward Contract [Member] Canadian Dollar Foreign Currency Forward Contract Notional amount Notional Amount to be Purchased/ Sold Derivative, Notional Amount Weighted Average Shares Outstanding - 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II Asset Acquisition [Text Block] Amortization of debt issuance costs Amortization of debt issuance costs, net Amortization of Debt Issuance Costs Unsecured debt investments Unsecured debt investments Unsecured Unsecured Debt [Member] Goldman Sachs Bank USA Goldman Sachs Bank USA [Member] Goldman Sachs Bank USA Dividend reinvestment plan shares (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Commercial Services & Supplies Commercial Services & Supplies Commercial Services & Supplies [Member] Commercial Services & Supplies Debt (net of unamortized debt issuance costs of $95,067 and $84,123, respectively) Total Debt (net of unamortized debt issuance costs) Net Carrying Value Long-Term Debt Net Contributed Capital Investment Company, Average Net Assets Investments, at fair value (amortized cost of $5,541,254) Asset Acquisition, Investments, Fair Value Asset Acquisition, Investments, Fair Value Changes in operating assets and liabilities: Adjustment to Reconcile 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Agreement - Incentive Rate, After Exchange Listing, Pre-Incentive Fee Net Investment Income, Quarterly Threshold Reimbursed fees and expenses, percentage Asset Acquisition, Reimbursed Fees And Expenses, Percentage Asset Acquisition, Reimbursed Fees And Expenses, Percentage Net realized gain (loss): Net Realized Gains (Losses) [Abstract] Net Realized Gains (Losses) Foreign currency forward contract AUD Australian Dollar Foreign Currency Forward Contract [Member] Australian Dollar Foreign Currency Forward Contract Internet & Direct Marketing Retail Internet & Direct Marketing Retail Internet & Direct Marketing Retail [Member] Internet & Direct Marketing Retail Total Increase (Decrease) in Net Assets Stockholders' Equity, Period Increase (Decrease) Asset coverage ratio, minimum Debt Instrument, Covenant Terms, Asset Coverage Ratio, Minimum Debt Instrument, Covenant Terms, Asset Coverage Ratio, Minimum Directors' fees Director Fee Segment Reporting Segment Reporting, Policy [Policy Text 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2020-1 A Schedule of Investments [Table] Schedule of Investments [Table] Unrealized loss for U.S. federal income tax purposes Investment, Tax Basis, Unrealized Loss Net change in unrealized (gain) loss on interest rate swaps attributed to unsecured notes Net change in unrealized gain (loss) Unrealized Gain (Loss) on Derivatives Outstanding Principal Long-Term Debt, Gross Debt Securities Debt Securities [Member] Asset Class [Domain] Asset Class [Domain] Related Party Transactions [Abstract] Retained Investment in Business Retained Investment in Business [Member] Debt Issuance Costs Debt, Policy [Policy Text Block] Investment owned, restricted, cost Investment Owned, Restricted, Cost Multiline Retail Multiline Retail Multiline Retail [Member] Multiline Retail Compensation Amount Outstanding Recovery Compensation Amount ABF - Leasing ABF - Leasing [Member] ABF - Leasing Individual: Individual [Axis] Weighted Average Shares Outstanding - Diluted (in shares) Weighted average shares of common stock outstanding—diluted (in shares) Weighted-average shares outstanding—diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Related Party Transaction [Line Items] Related Party Transaction [Line Items] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Discounted Factor Discounted Cash Flow [Member] Discounted Cash Flow Liabilities Derivative Liability, Subject to Master Netting Arrangement, before Offset Interest receivable Asset Acquisition, Interest Receivable Asset Acquisition, Interest Receivable Receivable from a controlled affiliate Other Receivables Total commitments Investment Commitment, Amount Investment Commitment, Amount Net realized (gain) loss on foreign currency transactions relating to debt Foreign Currency Transaction Gain (Loss), Realized, Debt Foreign Currency Transaction Gain (Loss), Realized, Debt Outstanding letters of credit Letters of Credit Outstanding, Amount 1-3 years Contractual Obligation, To Be Paid, One To Three Years Contractual Obligation, To Be Paid, One To Three Years Investment Company, Net Assets [Roll Forward] Investment Company, Net Assets [Roll Forward] Organization, Consolidation and Presentation of Financial Statements [Abstract] Miscellaneous Debt Commitments, Netting Miscellaneous Debt Commitments, Netting [Member] Miscellaneous Debt Commitments, Netting Cash acquired in the Mergers Cash Acquired In The Mergers Cash Acquired In The Mergers Ratio of net investment income to average net assets Investment Company, Investment Income (Loss) Ratio Construction & Engineering Construction & Engineering Construction Sector [Member] All Executive Categories All Executive Categories [Member] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Athena CLO II Class A-L Loans Athena CLO II Class A-L Loans [Member] Athena CLO II Class A-L Loans Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Asset Acquisition [Domain] Asset Acquisition [Domain] Asset coverage ratio Investment Company, Senior Security, Indebtedness, Asset Coverage Ratio Distributions to Common Shareholders Investment Company, Distribution [Policy Text Block] Schedule of Computation for Basic and Diluted Earnings (Loss) Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Investment Company, Nonconsolidated Subsidiary [Domain] Investment Company, Nonconsolidated Subsidiary [Domain] Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Investments at fair value Investments, Fair Value Disclosure 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] Total liabilities assumed Asset Acquisition, Liabilities Asset Acquisition, Liabilities 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] Payables to affiliates Other Liabilities Debt agreement event two Debt Agreement, Event Two [Member] Debt Agreement, Event Two SPV Asset Facility IV SPV Asset Facility IV [Member] SPV Asset Facility IV Common stock, shares authorized (in shares) Common Stock, Shares Authorized Euro Foreign Currency Forward Contract 7/17/2026 Euro Foreign Currency Forward Contract 7/17/2026 [Member] Euro Foreign Currency Forward Contract 7/17/2026 Dividend and PIK Dividend Income Dividend Income, Operating, Paid in Cash Transfers into (out of) Level 3(1) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers In From Mergers Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers In From Mergers Schedule of Carrying Values and Fair Values of the Company’s Debt Obligations Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Exercise Price Award Exercise Price Authorized amount of share repurchase program Share Repurchase Program, Authorized, Amount Net Increase (Decrease) in Net Assets Resulting from Capital Share Transactions Investment Company, Capital Transactions, Increase (Decrease) Investment Company, Capital Transactions, Increase (Decrease) Revolving Credit Facility Senior Secured Revolving Credit Facility [Member] Senior Secured Revolving Credit Facility Document Quarterly Report 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] O 2025 Q1 Dividends O 2025 Q1 Dividends [Member] O 2025 Q1 Dividends Athena CLO IV Athena CLO IV [Member] Athena CLO IV Range (Weighted Average) Investment Company, Investment Owned, Measurement Input Dividend Income, Paid In Kind Dividend Income, Paid In Kind [Member] Dividend Income, Paid In Kind Cost Amortized Cost Amortized Cost Investment Owned, Cost Gross Additions Investments in and Advances to Affiliates, at Fair Value, Gross Additions Management fees Management Fee Expense Unamortized Debt Issuance Costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Financial 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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] Interest income Total PIK Income Interest Income, Operating Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Payments on debt Repayments of Debt Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Pound Sterling Foreign Currency Forward Contract 1/20/2026 Pound Sterling Foreign Currency Forward Contract 1/20/2026 [Member] Pound Sterling Foreign Currency Forward Contract 1/20/2026 Weighted Average Weighted Average [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Net assets acquired Asset Acquisition, Assets Acquired and Liabilities Assumed, Net Asset Acquisition, Assets Acquired and Liabilities Assumed, Net June 2025 Notes June 2025 Notes [Member] June 2025 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 Athena CLO V Athena CLO V [Member] Athena CLO V Income Statement [Abstract] Net Assets Equity, Attributable to Parent [Abstract] Per share market value at end of period (in USD per share) Per Share Market Value Per Share Market Value Document Transition Report PIK dividend income PIK Dividend Income Dividend Income, Operating, Paid in Kind Operating Expenses Operating Expenses [Abstract] Debt periodic payment Debt Instrument, Periodic Payment Total Debt Line of Credit Facility, Remaining Borrowing Capacity And Debt Instrument, ​Capacity ​Amount Line of Credit Facility, Remaining Borrowing Capacity And Debt Instrument, ​Capacity ​Amount Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Blue Owl Leasing JV LLC Blue Owl Leasing JV LLC [Member] Blue Owl Leasing JV LLC Unrealized gain for U.S. federal income tax purposes Investment, Tax Basis, Unrealized Gain Debt agreement event one Debt Agreement, Event One [Member] Debt Agreement, Event One Cash Investment, Basis Spread, Variable Rate City Area Code Restricted investments as a percentage of net assets Restricted Investments, Percent of Net Assets Foreign currency forward contract AUD Foreign Currency Forward Contract AUD [Member] Foreign Currency Forward Contract AUD Geographic Concentration Risk Geographic Concentration Risk [Member] Subsequent Events Subsequent Events [Text Block] Volatility Measurement Input, Price Volatility [Member] Real Estate Management & Development Real Estate Management & Development Real Estate Management & Development [Member] Real Estate Management & Development Building Products Building Products Building Products [Member] Building Products Name Forgone Recovery, Individual Name Diversified Consumer Services Diversified Consumer Services [Member] Diversified Consumer Services Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Health Care Equipment & Supplies Health Care Equipment & Supplies [Member] Health Care Equipment & Supplies Entity [Domain] Industry Concentration Risk Industry Concentration Risk [Member] Industry Concentration Risk Dividend income Interest and Dividend Income, Operating Supplemental dividend, per share (in USD per share) Investment Company, Supplemental Dividend, Per Share, Cash Paid. Investment Company, Supplemental Dividend, Per Share, Cash Paid. Net deferred tax liability Deferred Tax Liabilities, Net Shares issued (in shares) Stock Issued During Period, Shares, New Issues Par Investment Owned, Balance, Principal Amount Measurement Basis [Axis] Measurement Basis [Axis] SMBC Capital Markets, Inc. SMBC Capital Markets, Inc. SMBC Capital Markets, Inc. [Member] SMBC Capital Markets, Inc. Cost for income tax purposes Investment, Tax Basis, Cost Product Information [Line Items] Product Information [Line Items] Cash & Restricted Cash Cash and Cash Equivalents, Policy [Policy Text Block] Banks Banks Banks [Member] Banks Subsequent Event Type [Domain] Subsequent Event Type [Domain] Management fee, average gross assets Management and Service Fees, Average Gross Assets Management and Service Fees, Average Gross Assets Offering Expenses Stockholders' Equity, Policy [Policy Text Block] Investment Company [Abstract] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Schedule of Quantitative Information About Significant Unobservable Inputs of Level 3 Investments Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Debt issuance costs Payments of Debt Issuance Costs Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued 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provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash Flows from Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Upfront Payments/Receipts Derivative Liability, Upfront Payments (Receipts) Upfront Payments/Receipts Fee on unused portion of credit facility Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Issue price (in USD per share) Shares Issued, Price Per Share Financial Instruments [Domain] Financial Instruments [Domain] Athena CLO II Refinancing Class A-LR Loans Athena CLO II Refinancing Class A-LR Loans [Member] Athena CLO II Refinancing Class A-LR Loans Derivative assets Derivative Asset Other income Other Income Underlying Securities Award Underlying Securities Amount Total assets acquired Asset Acquisition, Assets Asset Acquisition, Assets Fair Value Estimate of Fair Value Measurement [Member] Issuance of common shares Stock Issued During Period, Value, New Issues Schedule of Investment Company, Financial Highlights Investment Company, Financial Highlights [Table Text Block] Preferred equity investments Preferred Preferred Stock [Member] CLO 2020-1 [Member] CLO 2020-1 [Member] CLO 2020-1 Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] 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] Pharmaceuticals Pharmaceuticals Pharmaceuticals [Member] Pharmaceuticals Current Fiscal Year End Date Shares/Units (in shares) Investment Owned, Balance, Shares SPV Asset Facility II SPV Asset Facility II [Member] SPV Asset Facility II Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Foreign currency forward contract CAD 2 Foreign Currency Forward Contract CAD 2 [Member] Foreign Currency Forward Contract CAD 2 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] Distribution per share (in USD per share) Common Stock, Dividends, Per Share, Declared Entity File Number Road & Rail Road & Rail [Member] Road & Rail Hotels, Restaurants & Leisure Hotels, Restaurants & Leisure [Member] Hotels, Restaurants & Leisure Supplemental dividend (in USD per share) Investment Company, Supplemental Dividend Investment Company, Supplemental Dividend Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Variable Rate Component, Two Variable Rate Component, Two [Member] Variable Rate Component, Two Increase (Decrease) in Net Assets Resulting from Operations Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [Abstract] Air Freight & Logistics Air Freight & Logistics [Member] Air Freight & Logistics Equity Components [Axis] Equity Components [Axis] Debt instrument, repurchase amount Debt Instrument, Repurchase Amount Unrealized gain (loss) for U.S. federal income tax purposes Investment, Tax Basis, Unrealized Gain (Loss), Net Investment, Tax Basis, Unrealized Gain (Loss), Net January 2027 Notes January 2027 Notes [Member] January 2027 Notes Schedule of the Allocation of the Purchase Price to the Assets Acquired and Liabilities Assumed Asset Acquisition [Table Text Block] Schedule of Fair Value and Notional Value of the Derivative Assets and Liabilities Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block] Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Entity Small Business Athena CLO V Class C Notes Athena CLO V Class C Notes [Member] Athena CLO V Class C Notes Distribution payable Distributions Payable Distribution Payable MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Proceeds from investments and investment repayments, net Proceeds from Disposition of Investment, Operating Activity Document Type Debt repurchased Debt Instrument, Repurchased Face Amount Distributions recorded in the period Distributions Declared Distributions Declared Discounted Cash Flow Analysis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Notional Amount to be Sold Short [Member] 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) Significant Accounting Policies Significant Accounting Policies [Text Block] PIK Investment, Interest Rate, Paid in Kind Subsequent Event [Line Items] Subsequent Event [Line Items] Shareholders' Equity Statement of Stockholders' Equity [Abstract] Performance based incentive fees Incentive Fee Expense (Reversal), Net Incentive Fee 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Dividends O 2025 Q2 Dividends [Member] O 2025 Q2 Dividends Common stock issued by the Company Asset Acquisition, Consideration Transferred, Equity Interest Issued and Issuable Supplemental and Non-Cash Information Supplemental Cash Flow Information [Abstract] Total Company Investments, Including Miscellaneous, Debt Commitments, Before Netting Total Company Investments, Including Miscellaneous, Debt Commitments, Before Netting [Member] Total Company Investments, Including Miscellaneous, Debt Commitments, Before Netting PEO Name PEO Name Debt Commitment Debt Component [Member] Debt Component Accrued expenses and other liabilities Accrued Liabilities and Other Liabilities Incentive fee payable Asset Acquisition, Incentive Fee Payable Asset Acquisition, Incentive Fee Payable Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and 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Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] 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] Consumer Finance Consumer Finance [Member] Consumer Finance Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] O 2026 Q2 Dividends O 2026 Q2 Dividends [Member] O 2026 Q2 Dividends Notional Amount to be Purchased Long [Member] Increase (decrease) in payables to affiliate Increase (Decrease) in Due to Affiliates Amount of transaction Related Party Transaction, Amounts of Transaction Earnings Per Share - Basic (in USD per share) Earnings (loss) per common share-basic (in USD per share) Earnings Per Share, Basic Measurement Input Type [Axis] Measurement Input Type [Axis] Insider Trading Arrangements [Line Items] O 2026 Q1 Dividends O 2026 Q1 Dividends [Member] O 2026 Q1 Dividends Schedule of Share Repurchase Program Class of Treasury Stock [Table Text Block] 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] Unused portion Debt Instrument, Unused Borrowing Capacity, Amount Draw period Debt Instrument, Draw Period Debt Instrument, Draw Period Total Unfunded Commitments Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] United Kingdom UNITED KINGDOM Concentration risk (as percent) Concentration Risk, Percentage Equity Awards Adjustments Equity Awards Adjustments [Member] Asset Acquisition [Line Items] Asset 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Threshold Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, After Exchange Listing, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold Share Repurchase Program [Axis] Share Repurchase Program [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Net increase (decrease) in blue owl leasing members’ equity resulting from operations Increase in Leasing JV Members' Equity Increase in Leasing JV Members' Equity Statement of Cash Flows [Abstract] Foreign Exchange Forward Foreign Exchange Forward [Member] Midwest US Midwest Region [Member] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Income Taxes Income Tax Disclosure [Text Block] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Dividends [Axis] Dividends [Axis] Number of shares issued per acquiree share (in shares) Asset Acquisition, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Asset Acquisition, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share Interest rate swaps January 2031 Notes January 2031 Notes [Member] January 2031 Notes Average interest rate Debt Instrument, Interest Rate During Period Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Derivatives not designated as hedges: Not Designated as Hedging Instrument [Member] Investments, Debt and Equity Securities [Abstract] Total Investment Income Gross Investment Income, Operating Derivative liabilities Derivative Liability Entity Address, Address Line One Catch-Up Provision Investment Advisory Agreement - Incentive Fee, Catch-Up Provision [Member] Investment Advisory Agreement - Incentive Fee, Catch-Up Provision Investments in and Advances to Affiliates, at Fair Value [Roll Forward] Investments in and Advances to Affiliates, at Fair Value [Roll Forward] NAV at closing (in USD per share) Asset Acquisition, Share Price Asset Acquisition, Share Price Consolidation Consolidation, Policy [Policy Text Block] Portfolio turnover rate Investment Company, Portfolio Turnover Discounted Cash Flow Analysis Valuation Technique, Discounted Cash Flow [Member] Statement [Table] Statement [Table] SPV Asset Facility III SPV Asset Facility III [Member] SPV Asset Facility III Line of credit facility, accordion feature higher borrowing capacity option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Unrealized Appreciation (Depreciation) Assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Transaction costs Transaction costs, net Asset Acquisition, Consideration Transferred, Transaction Cost Quarterly Hurdle Rate Investment Advisory Agreement - Incentive Fee, Quarterly Hurdle Rate [Member] Investment Advisory Agreement - Incentive Fee, Quarterly Hurdle Rate Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold Investment Advisory Agreement - Incentive Rate, Before Exchange Listing, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold [Member] Investment Advisory Agreement - Incentive Rate, Before Exchange Listing, Pre-Incentive Fee Net Investment Income Below Catch-Up Threshold Company Pays Derivative, Basis Spread on Variable Rate Foreign cash, cost Cash and Cash Equivalent, Held in Foreign Currency, Acquisition Cost Translation of assets and liabilities in foreign currencies and other transactions Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Derivative Instruments and Hedging Activities Disclosure [Abstract]