Total Level 3 Assets Investments, Excluding Investments Where Valuation (Unadjusted) Obtained From Third-Party Pricing Service [Member] Investments, Excluding Investments Where Valuation (Unadjusted) Obtained From Third-Party Pricing Service 2022 ABS Asset-Backed Securitization 2022 [Member] Represents information pertaining to Asset-Backed Securitization 2022. Quarterly hurdle rate percentage Quarterly Hurdle Rate Percentage Represents information pertaining to percentage of hurdle rate per quarter. Non-controlled/non-affiliate company investments Non-controlled/non-affiliate company investments Investment, Unaffiliated Issuer [Member] Other (in dollars per share) Investment Company, Other Increase (Decrease) Per Share Per share or unit amount of other increase (decrease) in net asset value. Other income (loss) for tax but not book Investment Company, Tax Basis, Income, Taxable Series C Senior Unsecured Notes 2029 Series C Senior Unsecured Notes July 2029 [Member] Series C Senior Unsecured Notes July 2029 Second part incentive fee payable, percentage Second Part of Incentive Fee Payable, Percentage on Capital Gains Percentage of second part of incentive fee payable on realized capital gains with related parties. Consumer Goods: Non-Durable Consumer Sector, Non- Durable [ Member] Consumer Sector, Non- Durable [ Member] Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Securities Act File Number Capital in excess of par value Increase (decrease) in capital in excess of par value Additional Paid-in Capital [Member] Net gain (loss) Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Number of components Number Of Components Under Agreement Number of components under base management fee agreement with related parties. Tabular List, Table Tabular List [Table Text Block] Net gain (loss) (in dollars per share) Investment Company, Gain (Loss) on Investment, Per Share Foreign currency forward contract 11 Foreign Currency Forward Contract 11 [Member] Foreign Currency Forward Contract 11 Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Foreign currency forward contract 29 Foreign Currency Forward Contract 29 [Member] Foreign Currency Forward Contract 29 Schedule of Composition of the Company's Incentive Fees Schedule of Related Party Transactions [Table Text Block] Adjusted Term SOFR Secured Overnight Financing Rate (SOFR) [Member] Adjustment to Compensation: Adjustment to Compensation [Axis] Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Payable for unsettled trades Increase (Decrease) in Accounts Payable, Trade Minimum net worth equal required Banking Regulation, Mortgage Banking, Net Worth, Minimum O M2 2025 Dividends O 2025 M2 Aggregate Dividends [Member] O 2025 M2 Aggregate Dividends Initial base management fee, percentage Initial Base Management Fee, Percentage Percentage of initial base management fee with related parties. Adjustment to Compensation, Amount Adjustment to Compensation Amount Concentration risk, percentage Concentration Risk, Percentage Ratio of net investment income to average net assets with waivers Investment Company, Incentive Allocation to Average Net Assets, Percentage Other assets Increase (Decrease) in Other Operating Assets Consolidation Consolidation, Policy [Policy Text Block] Part two incentive fees Incentive Fee Expense, Part Two Amount of expense for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP) Part two. Notional Amount 
to be Purchased Derivative Asset, Notional Amount Telecommunications Telecommunications [Member] Telecommunications Employee Stock Option Share-Based Payment Arrangement, Option [Member] Secured Debt Ratio Event Secured Debt Ratio Event [Member] Secured Debt Ratio Event Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Non-controlled affiliate/non-affiliate company investments Net realized (gain) loss on investments Net realized gain (loss) Debt and Equity Securities, Realized Gain (Loss) YBR OZ ECE, LLC YBR OZ ECE, LLC [Member] YBR OZ ECE, LLC Annual hurdle rate percentage Annual Hurdle Rate Percentage Represents information pertaining to percentage of hurdle rate per year. Total net assets Equity, attributable to parent Equity, Attributable to Parent Interest expense - December 2028 Notes December Twenty Twenty Eight Notes [Member] December Twenty Twenty Eight Notes Measurement Frequency [Axis] Measurement Frequency [Axis] Insider Trading Policies and Procedures [Line Items] Common stock, authorized (in shares) Common Stock, Shares Authorized Other realized gain (loss) differences Investment Company, Tax Basis, Other, Increase (Decrease) Issuance of common stock (in shares) Shares Issued (in shares) Stock Issued During Period, Shares, New Issues Fair Value, Recurring Fair Value, Recurring [Member] November 2028 Notes November 2028 Note Purchase Agreement [Member] November 2028 Note Purchase Agreement O 2025 M11 Dividends O 2025 M11 Aggregate Dividends [Member] O 2025 M11 Aggregate Dividends Foreign currency forward contract 16 Foreign Currency Forward Contract 16 [Member] Foreign Currency Forward Contract 16 Excise tax accrued (in percent) Excise Tax Accrued, Percentage Percentage of excise tax accrued, calculated as a percentage of the estimated excess taxable income, if any, as taxable income is earned. Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] After the reinvestment period After The Reinvestment Period [Member] This member stands for reinvestment after the period. Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Borrowings Debt Instrument [Line Items] Incentive fees payable Incentive Fee Payable Investment, Identifier [Axis] Investment, Identifier [Axis] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Investments, at fair value: Fair value Total investments, at fair value: Fair value at the beginning Fair value at the ending Investment Owned, Fair Value Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Entity Shell Company Entity Shell Company Southeast US Southeast Region [Member] Schedule of Composition of the Company's Investment Portfolio Summary Investment Holdings [Table Text Block] Average debt outstanding Long-Term Debt, Average Amount Outstanding Southwest US Southwest Region [Member] Schedule of Carrying Values and Estimated Fair Values of Debt Instruments Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Borrowings on debt Proceeds from Issuance of Debt Automotive Automotive Sector [Member] O 2024 M1 Dividends O 2024 M1 Aggregate Dividends [Member] O 2024 M1 Aggregate Dividends Net worth amount Debt Instrument, Covenants Description, Minimum Net Worth Amount Debt Instrument, Covenants Description, Minimum Net Worth Amount Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Catalyst Data Holdings Catalyst Data Holdings [Member] Catalyst Data Holdings Fourth Credit Facility Amendment Fourth Credit Facility Amendment [Member] Fourth Credit Facility Amendment Minimum repayment of aggregate principal amount of senior notes Debt Instrument, Redemption, Minimum Repayment Of Aggregate Principal Amount Of Senior Notes Debt Instrument, Redemption, Minimum Repayment Of Aggregate Principal Amount Of Senior Notes Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Line of Credit Facility [Table] Line of Credit Facility [Table] Accretion of discounts and amortization of premiums Investment Income, Net, Amortization of Discount and Premium Base management fees Management Fee Expense Gross Amount of Unrealized Loss Derivatives, Gross Unrealized Loss Amount of gross unrealized loss on derivatives. Environmental Industries Environmental Industries [Member] Represents the information pertaining to Environmental Industries Sector. Document Fiscal Period Focus Document Fiscal Period Focus Tax reclassification of stockholders’ equity in accordance with generally accepted accounting principles Increase (decrease) in equity Investment Company, Tax Reclassification, Increase (Decrease) Award Timing Method Award Timing Method [Text Block] Revenue multiples Measurement Input, Revenue Multiple [Member] Award Type Award Type [Axis] Investments Denominated in Foreign Currency Investments Denominated in Foreign Currency, Policy [Policy Text Block] Disclosure of accounting policy for investments denominated in foreign currency. O 2025 M10 Dividends O 2025 M10 Aggregate Dividends [Member] O 2025 M10 Dividends Reclassifications Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Reclassifications Amount of increase (decrease) in fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing, arising from reclassifications. Investment, Name [Domain] Investment, Name [Domain] Foreign Currency Forward Contract 58 Foreign Currency Forward Contract 58 [Member] Foreign Currency Forward Contract 58 Foreign currency forward contract 40 Foreign Currency Forward Contract 40 [Member] Foreign Currency Forward Contract 40 Entity Address, City or Town Entity Address, City or Town Stockholder distributions - long-term capital gains (in dollars per share) Investment Company Long Term Capital Gains Per Share Investment Company Long Term Capital Gains Per Share S 2023 M4 Dividends S 2023 M4 Dividends [Member] S 2023 M4 Dividends Open Forward Foreign Currency Contract [Table] Open Forward Foreign Currency Contract [Table] O 2024 M10 Dividends O 2024 M10 Aggregate Dividends [Member] O 2024 M10 Aggregate Dividends Effect of foreign currency exchange rates Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] S 2024 M10 Dividends S 2024 M10 Dividends [Member] S 2024 M10 Dividends Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Foreign currency forward contract 1 Foreign Currency Forward Contract 1 [Member] Foreign Currency Forward Contract 1 Foreign currency forward contract 37 Foreign Currency Forward Contract 37 [Member] Foreign Currency Forward Contract 37 PIK interest capitalized (cost) Interest Income (Expense), Operating, Paid In Kind Interest Income (Expense), Operating, Paid In Kind Entity Emerging Growth Company Entity Emerging Growth Company Foreign currency forward contract 66 Foreign currency forward contract 66 [Member] Foreign currency forward contract 66 Debt instrument, accordion feature facility Debt Instrument, Accordion Feature Facility Debt Instrument, Accordion Feature Facility 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] Less: Unamortized debt issuance costs Unamortized deferred financing costs Debt Issuance Costs, Net Foreign currency forward contracts Derivative, Gain (Loss) on Derivative, Net Maximum percentage of common shares outstanding to be repurchased in each quarter Stock Repurchase Program, Maximum Percentage Of Shares Outstanding To Be Repurchased In Each Quarter Represents the maximum percentage of common shares outstanding to be purchased in each quarter. Other income not currently taxable Investment Company, Tax Basis, Income, Not Currently Taxable Junior secured loans Junior secured loans Junior Loans [Member] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Long-term capital gains Investment Company, Distribution, Long-Term Capital Gain 2023 Class C-R Senior Secured Notes 2023 Class C-R Senior Secured Notes [Member] 2023 Class C-R Senior Secured Notes MC Voyager SPV II LLC MC Voyager SPV II LLC [Member] MC Voyager SPV II LLC Credit Facility Through September 5, 2024 Credit Facility Through September 5, 2024 [Member] Credit Facility Through September 5, 2024 Foreign currency and other transactions Net change in unrealized (gain) loss on foreign currency and other transactions Unrealized gain (loss) on foreign currency and other transactions Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Commitment to fund equity investment Commitment To Fund Equity Investment Amount of commitment made to fund equity investment. J2 BWA Funding III, LLC J2 BWA Funding III, LLC [Member] J2 BWA Funding III, LLC [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] Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Media: Advertising, Printing & Publishing Media: Advertising, Printing & Publishing Represents the information pertaining to Media: Advertising, Printing & Publishing Sector. Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Taxable income before deductions for distributions Investment Company, Tax Basis, Taxable Income (Loss), before Deduction for Distribution Pledged Status [Domain] Pledged Status [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date U.S. federal and state corporate-level income taxes, net tax expense Income Tax Expense (Benefit) Foreign currency forward contract 70 Foreign currency forward contract 70 [Member] Foreign currency forward contract 70 Interest rate, basis spread Debt Instrument, Basis Spread on Variable Rate Other assets Other Assets Balance at the beginning Balance at the end Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Foreign currency forward contract 6 Foreign Currency Forward Contract 6 [Member] Foreign Currency Forward Contract 6 Purchases of investments Payment for Purchase, Investment, Operating Activity Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Estimated gross unrealized losses Investment, Tax Basis, Unrealized Loss Foreign currency forward contract 41 Foreign Currency Forward Contract 41 [Member] Foreign Currency Forward Contract 41 Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Foreign currency forward contract 74 Foreign currency forward contract 74 [Member] Foreign currency forward contract 74 Declared a distribution (in dollars per share) Dividends Payable, Amount Per Share All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Debt Instrument, redemption price, percentage Debt Instrument, Redemption Price, Percentage Interest rate, Cash Investment, Interest Rate, Paid in Cash Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Total operating expenses Investment Company, Expense, after Reduction of Fee Waiver and Reimbursement Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Repayments of short-term borrowings Repayments of Short-Term Debt Transactions with Affiliated Companies, Fair value Roll Forward Investments in and Advances to Affiliates, at Fair Value [Roll Forward] Minimum term prior to record date fixed by board under dividend reinvestment plan Dividend Reinvestment Plan Minimum Term Prior To Record Date Fixed By Board Represents the minimum term prior to record date fixed by board under dividend reinvestment plan. Proceeds from principal payments and sales of investments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Subsequent Event Subsequent Event [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Containers, Packaging & Glass Container and Packaging Sector [Member] Interest rate, PIK Investment, Interest Rate, Paid in Kind Expenses not currently deductible Investment Company, Tax Basis, Refunds, Not Currently Taxable Investment Company, Tax Basis, Refunds, Not Currently Taxable Schedule of Investments [Abstract] Schedule of Investments [Abstract] Equity Components [Axis] Equity Components [Axis] Entity Ex Transition Period Entity Ex Transition Period Foreign currency forward contract 33 Foreign Currency Forward Contract 33 [Member] Foreign Currency Forward Contract 33 Investment Company, Financial Highlights [Abstract] Investment Company, Financial Highlights [Abstract] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Number of reportable segments Number of Reportable Segments Foreign currency forward contract 67 Foreign currency forward contract 67 [Member] Foreign currency forward contract 67 Entity Address, State or Province Entity Address, State or Province Dividend income Interest and Dividend Income, Operating Euro Member Countries, Euro Euro Member Countries, Euro Unused availability across all borrowing facilities Debt Instrument, Unused Borrowing Capacity, Amount SPV II Credit Facility SPV II Credit Facility SPV II Credit Facility [Member] SPV II Credit Facility Non-controlled affiliate company investments Non-controlled/affiliate company investments Investment, Affiliated Issuer, Noncontrolled [Member] O M3 2025 Dividends O 2025 M3 Aggregate Dividends [Member] O 2025 M3 Aggregate Dividends Individual: Individual [Axis] Document Annual Report Document Annual Report Foreign currency forward contract 5 Foreign Currency Forward Contract 5 [Member] Foreign Currency Forward Contract 5 Liquidation Valuation Technique, Liquidation [Member] Valuation technique calculating liquidation. Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Revolving Credit Agreement Senior Secured Revolving Credit Facility Agreement with ING Capital, LLC [Member] Represents the information pertaining to Senior Secured Revolving Credit Agreement with lender ING Capital, LLC,. Utilities: Electric Electric Utilities Sector [Member] Electric Utilities Sector Distributions Investment Company, Distribution [Policy Text Block] Entity Interactive Data Current Entity Interactive Data Current Foreign currency forward contract 25 Foreign Currency Forward Contract 25 [Member] Foreign Currency Forward Contract 25 FIRE: Real Estate FIRE Real Estate Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in FIRE: Real Estate. Healthcare & Pharmaceuticals Healthcare Sector [Member] Amortized cost Amortized Cost: Investment Owned, Cost Debt Instrument, Reinvestment Period [Domain] Debt Instrument, Reinvestment Period [Domain] Debt Instrument, Reinvestment Period [Domain] Net realized (gain) loss on foreign currency forward contracts Gain (Loss) on Sale of Derivatives Prepayment gain (loss) Investment Income, Gain (Loss) From Prepayment Amount of gain (loss) on prepayment related to investment income. SPV Credit Facility SPV Credit Facility SPV Credit Facility [Member] SPV Credit Facility Ownership [Domain] Ownership [Domain] 2023 Issuer Monroe Capital Income Plus Issuer II LLC [Member] This member stands for Monroe Capital Income Plus ABS Funding II LLC. O 2024 M2 Dividends O 2024 M2 Aggregate Dividends [Member] O 2024 M2 Aggregate Dividends Net change in unrealized gain (loss) Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax Net asset value per share (in dollars per share) Net asset value at beginning of period (in dollars per share) Net asset value at end of period (in dollars per share) Net Asset Value Per Share Automotive Automotive Sector. [Member] Automotive Sector. Entity Central Index Key Entity Central Index Key PEO Name PEO Name O 2024 M11 Dividends O 2024 M11 Aggregate Dividends [Member] O 2024 M11 Aggregate Dividends 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] Foreign currency forward contract 32 Foreign Currency Forward Contract 32 [Member] Foreign Currency Forward Contract 32 Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount 2025 Class A Notes 2025 Class A Notes [Member] 2025 Class A Notes Midwest US Midwest Region [Member] Investment Company, Change in Net Assets [Table] Investment Company, Change in Net Assets [Table] Foreign currency forward contract 75 Foreign currency forward contract 75 [Member] Foreign currency forward contract 75 July 2029 Notes July 2029 Notes Senior Unsecured Notes July 2029 [Member] Senior Unsecured Notes July 2029 Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Dividend income Dividend income Dividend Income, Operating Subsequent Event Type [Axis] Subsequent Event Type [Axis] Northwest US Northwest Region [Member] NAV per share (in dollars per share) Dividend Reinvestment Plan, Net Asset Value Per Share Dividend Reinvestment Plan, Net Asset Value Per Share NFS Intermediate Holdco, LLC NFS Intermediate Holdco, LLC [Member] NFS Intermediate Holdco, LLC 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] Foreign currency forward contract 24 Foreign Currency Forward Contract 24 [Member] Foreign Currency Forward Contract 24 Born To Run, LLC. Born To Run, LLC. [Member] Born To Run, LLC. Entity Address, Address Line One Entity Address, Address Line One Supplemental dividend per share (in usd per share) Common Stock, Dividends, Per Share, Declared, Supplemental Common Stock, Dividends, Per Share, Declared, Supplemental Debt Issuance Costs Deferred Charges, Policy [Policy Text Block] Estimated gross unrealized gains Investment, Tax Basis, Unrealized Gain Investments [Domain] Investments [Domain] Base management fee, percentage Management and Service Fees, Base Rate Number of investments transferred from Level 3 to Level 1 Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Number Of Investments, Transfers Out Of Level 3 Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Number Of Investments, Transfers Out Of Level 3 Ownership [Axis] Ownership [Axis] Financial Support for Nonconsolidated Legal Entity [Table] Financial Support for Nonconsolidated Legal Entity [Table] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Incentive fee payable as a percentage of pre-incentive fee net investment income, if such income exceeds the specified hurdle rate in any calendar quarter, prior to an exchange listing Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Exceeds The Specified Hurdle Rate In Any Calendar Quarter, Prior To An Exchange Listing Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Exceeds The Specified Hurdle Rate In Any Calendar Quarter, Prior To An Exchange Listing Industry Sector [Axis] Industry Sector [Axis] 2023 ABS Asset Backed Securitization 2023 [Member] Represents information pertaining to Asset-Backed Securitization 2023. Investment income: Net Investment Income [Abstract] Interest expense - July 2029 Notes July Twenty Twenty Nine Notes [Member] July Twenty Twenty Nine Notes Fair Value as of Grant Date Award Grant Date Fair Value Senior debt coverage ratio Line Of Credit Facility, Covenants, Senior Debt Coverage Ratio Line Of Credit Facility, Covenants, Senior Debt Coverage Ratio U.S. federal and state corporate-level income taxes, payables Accrued Income Taxes ClearlyRated Capital (Class A Units) ClearlyRated Capital, LLC (Class A Units) [Member] ClearlyRated Capital, LLC (Class A Units) Interest rate, floor Debt Instrument, Interest Rate, Floor Rate Floor rate for a debt instrument. Transactions with Related Parties Related Party Transaction [Line Items] O 2024 M4 Dividends O 2024 M4 Aggregate Dividends [Member] O 2024 M4 Aggregate Dividends Sales and paydowns (cost) Investments in and Advances to Affiliates, at Fair Value, Gross Reductions Fair Value Long-term debt, fair value Long-Term Debt, Fair Value SPV III Credit Facility SPV III Credit Facility SPV III Credit Facility [Member] SPV III Credit Facility Schedule of Valuation Techniques and Significant Unobservable Inputs Used in Recurring Level 3 Fair Value Measurements of Assets Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Debt Instrument, Reinvestment Period [Axis] Debt Instrument, Reinvestment Period [Axis] Debt Instrument, Reinvestment Period Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Schedule of Transactions with Affiliated Companies Investments in and Advances to Affiliates [Table Text Block] Below Investment Grade Event and a Secured Debt Ratio Event Below Investment Grade Event and a Secured Debt Ratio Event [Member] Below Investment Grade Event and a Secured Debt Ratio Event Investment Type [Axis] Investment Type [Axis] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Short-term capital loss carryforwards Income Taxes, Short-Term Capital Loss Carryforwards Income Taxes, Short-Term Capital Loss Carryforwards Interest and other debt financing expenses Total interest and other debt financing expenses Interest and Debt Expense Non-PEO NEO Non-PEO NEO [Member] Foreign Currency Forward Contract 49 Foreign Currency Forward Contract 49 [Member] Foreign Currency Forward Contract 49 Line of credit facility, maximum borrowing capacity, percentage Line of Credit Facility, Maximum Borrowing Capacity, Percentage Percentage of maximum borrowing capacity on fair market value of its portfolio company investments under line of credit facility. Foreign currency forward contract 44 Foreign Currency Forward Contract 44 [Member] Foreign Currency Forward Contract 44 Investment Company, Change in Net Assets [Line Items] Investment Company, Change in Net Assets [Line Items] July 2030 Notes July 2030 Notes [Member] July 2030 Notes Sale of Stock [Axis] Sale of Stock [Axis] Notional Amount 
to be Sold Derivative Liability, Notional Amount All Award Types Award Type [Domain] Investments in and Advances to Affiliates [Abstract] Investments in and Advances to Affiliates [Abstract] Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Other income Other income Other Income Compensation Amount Outstanding Recovery Compensation Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Covenant [Axis] Debt Covenant [Axis] Debt Covenant Recovery of Erroneously Awarded Compensation Disclosure [Line Items] CONSOLIDATED SCHEDULE OF INVESTMENTS Schedule of Investments [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Foreign Currency Forward Contract 63 Foreign Currency Forward Contract 63 [Member] Foreign Currency Forward Contract 63 Schedule of Distributions Paid Investment Company, Components Of Distributable Earnings (Accumulated Losses) [Table Text Block] Investment Company, Components Of Distributable Earnings (Accumulated Losses) Number of units held Investment Owned, Balance Units Balance held at close of period in number of units. Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Foreign currency forward contract 17 Foreign Currency Forward Contract 17 [Member] Foreign Currency Forward Contract 17 Notional Amount to be Sold Derivative, Notional Amount To Be Sold Notional or face amount of derivative to be sold. Financial Instruments [Domain] Financial Instruments [Domain] Interest Rate Scenario [Domain] Interest Rate Scenario [Domain] Interest Rate Scenario [Domain] Purchases of investments and other adjustments to cost Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Media: Advertising, Printing & Publishing Media: Advertising, Printing & Publishing [Member] Media: Advertising, Printing & Publishing Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Ratio/Supplemental data: Investment Company, Financial Ratios [Abstract] SPV IV MC Income Plus Financing SPV IV LLC [Member] MC Income Plus Financing SPV IV LLC Minimum Minimum [Member] O 2024 M9 Dividends O 2024 M9 Aggregate Dividends [Member] O 2024 M9 Aggregate Dividends Company Selected Measure Name Company Selected Measure Name Foreign currency forward contract 68 Foreign currency forward contract 68 [Member] Foreign currency forward contract 68 Foreign currency forward contract 28 Foreign Currency Forward Contract 28 [Member] Foreign Currency Forward Contract 28 Borrowings Debt Disclosure [Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Portfolio turnover Investment Company, Portfolio Turnover Media: Broadcasting & Subscription Media: Broadcasting & Subscription Represents the information pertaining to Media: Broadcasting & Subscription Sector. Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Applicable benchmark rate Applicable Benchmark Rate [Member] Represents the information pertaining to Applicable Benchmark Rate such as BBSY, HIBOR, SOR or TIBOR, as the case may be, on the relevant Quotation Day. Non-qualifying assets as percentage of total assets Non-Qualifying Assets As Percentage Of Total Assets Non-qualifying assets represented as a percentage of total assets. Foreign currency forward contract 10 Foreign Currency Forward Contract 10 [Member] Foreign Currency Forward Contract 10 O 2024 M12 Dividends O 2024 M12 Aggregate Dividends [Member] O 2024 M12 Aggregate Dividends Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] O M9 2025 Dividends O 2025 M9 Aggregate Dividends [Member] O 2025 M9 Aggregate Dividends Amount equal to net assets Debt Instrument, Covenants Description, Amount Equal To Net Assets From Financial Covenants Amount equal to net assets from financial covenants. Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Segment Reporting Segment Reporting, Policy [Policy Text Block] Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Foreign currency forward contract 12 Foreign Currency Forward Contract 12 [Member] Foreign Currency Forward Contract 12 Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Ratio of total investment income to average net assets Investment Company, Investment Income (Loss) Ratio, after Incentive Allocation Document Transition Report Document Transition Report Investments Summary of Investment Holdings [Line Items] Amount of total commitment Amount of Equity Commitments Amount of Equity Commitments Monroe Capital LLC Monroe Capital LLC [Member] Monroe Capital LLC Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date Subsequent Events Subsequent Events, Policy [Policy Text Block] Income Taxes Income Tax Disclosure [Text Block] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Schedule of Investments [Table] Schedule of Investments [Table] Investment Type Concentration Risk Investment Type Concentration Risk [Member] Investment Type Concentration Risk Balances at the beginning Balances at the end Equity, Including Portion Attributable to Noncontrolling Interest Price Per Share (in dollars per share) Shares Acquired, Average Cost Per Share Foreign currency forward contract 15 Foreign Currency Forward Contract 15 [Member] Foreign Currency Forward Contract 15 Document Type Document Type Level 3 Fair Value, Inputs, Level 3 [Member] Name Outstanding Recovery, Individual Name Capital in excess of par value Additional Paid in Capital Schedule of Net Increase in Net Assets Resulting from Operations Federal Income Tax Note [Table Text Block] Net investment income per share - diluted (in dollars per share) Net Investment Income Per Share, Diluted Represents the net investment income per share, diluted. Payables for excise taxes Sales and Excise Tax Payable Beverage, Food & Tobacco Food and Beverage Sector [Member] Estimated net unrealized gain (loss) Investment, Tax Basis, Unrealized Gain (Loss) Specified percentage of hurdle rate, considered for payment of incentive fee, following an exchange listing Specified Percentage Of Hurdle Rate, Considered For Payment Of Incentive Fee, Following An Exchange Listing Specified Percentage Of Hurdle Rate, Considered For Payment Of Incentive Fee, Following An Exchange Listing Statistical Measurement [Axis] Statistical Measurement [Axis] Class C-R Senior Secured Notes Class C-R Senior Secured Notes [Member] Class C-R Senior Secured Notes Commitment fee (in percent) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Reinvestment Period [Axis] Reinvestment Period [Axis] Reinvestment Period Outstanding borrowings as a percentage of facility amount considered for payment of commitment fee Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, Outstanding Borrowings As A Percentage Of Facility Amount Considered Percentage of line of credit facility, unused capacity, commitment fee percentage, outstanding borrowings as a percentage of facility amount considered. Fair Value Measurements Fair Value Measurement Inputs and Valuation Techniques [Line Items] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount SheerTrans Solutions, LLC Sheer Trans Solutions, LLC [ Member] This stands for Sheer Trans Solutions, LLC. Energy: Oil & Gas Energy, Oil and Gas Sector [Member] Represents the information pertaining to energy: oil & gas. Payable for unsettled trades Payable For Unsettled Trades Current And Non Current Carrying amount of the unpaid portion of the unsettled trades. Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Share Repurchase Program [Domain] Share Repurchase Program [Domain] SPV IV Credit Facility SPV IV Credit Facility SPV IV Credit Facility [Member] SPV IV Credit Facility Foreign currency forward contract 42 Foreign Currency Forward Contract 42 [Member] Foreign Currency Forward Contract 42 Level 1 Fair Value, Inputs, Level 1 [Member] Balances at the beginning (in shares) Balances at the end (in shares) Shares outstanding at end of period Shares, Outstanding 2023 Subordinated Notes Subordinated 2023 Notes [Member] Represents information pertaining to subordinated 2023 note member. . . Qualifying assets as percentage of total assets Qualifying Assets As Percentage Of Total Assets, Minimum Minimum qualifying assets represented as a percentage of Company's total assets. Directors’ fees Director Fee Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Net increase (decrease) in net assets resulting from operations per share - diluted (in dollars per share) Earnings Per Share, Diluted Foreign currency forward contract 65 Foreign currency forward contract 65 [Member] Foreign currency forward contract 65 Revolving Credit Facility With Australian Dollar Denominated Borrowings Revolving Credit Facility With Australian Dollar Denominated Borrowings [Member] Revolving Credit Facility With Australian Dollar Denominated Borrowings Class A-R Senior Secured Notes Class A-R Senior Secured Notes [Member] Class A-R Senior Secured Notes Sale of stock (in shares) Sale of Stock, Number of Shares Issued in Transaction Dividends [Axis] Dividends [Axis] O M1 2025 Dividends O 2025 M1 Aggregate Dividends [Member] O 2025 M1 Aggregate Dividends Stock issued in connection with dividend reinvestment plan Stock issued in connection with dividend reinvestment plan DRIP Shares Value Stock Issued During Period, Value, Dividend Reinvestment Plan Auditor Location Auditor Location Hotels, Gaming & Leisure Hotels, Gaming & Leisure Represents the information pertaining to Hotels, Gaming & Leisure Sector. O 2025 M12 Dividends O 2025 M12 Aggregate Dividends [Member] O 2025 M12 Aggregate Dividends Distributions in cash or property other than common stock percentage Distributions In Cash Property Other Than Common Stock Percentage Distributions in cash or property other than common stock percentage. Recorded Future, Inc. Recorded Future, Inc [ Member] This member stands for information pertaining to Recorded Future, Inc. Foreign Currency Forward Contract 61 Foreign Currency Forward Contract 61 [Member] Foreign Currency Forward Contract 61 Interest income Interest Income, Operating, Paid in Cash Revolving Credit Facility With Euros Denominated Borrowings Revolving Credit Facility With Euros Denominated Borrowings [Member] Revolving Credit Facility With Euros Denominated Borrowings Cash paid for income taxes, including excise taxes, during the year Income Taxes Paid, Net Effective yield net of servicing fees Investment Owned, Effective Yield Net Of Servicing Fees Investment Owned, Effective Yield Net Of Servicing Fees Foreign currency forward contract 46 Foreign Currency Forward Contract 46 [Member] Foreign Currency Forward Contract 46 S 2024 M12 Dividends S 2024 M12 Dividends [Member] S 2024 M12 Dividends Debt Principal Amount Outstanding Long-Term Debt, Gross Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Spread Investment, Basis Spread, Variable Rate Capital Equipment Capital Equipment Sector [Member] Represents the information pertaining to Capital Equipment Sector. Long-term capital loss carryforwards Income Taxes, Long-Term Capital Loss Carryforwards Income Taxes, Long-Term Capital Loss Carryforwards Number of shares held Investment Owned, Balance, Shares Dividends [Domain] Dividends [Domain] Expiration Date Trading Arrangement Expiration Date EBITDA Market Yields Measurement Input, Probability EBITDA Market Yields [Member] Measurement input using EBITDA market yields. Net investment income (in dollars per share) Investment Company, Investment Income (Loss), Per Share, Basic S 2024 M4 Dividends S 2024 M4 Dividends [Member] S 2024 M4 Dividends Whistler Parent Holdings III, Inc. Whistler Parent Holdings III, Inc. [Member] Whistler Parent Holdings III, Inc. Schedule of Information Related to Foreign Currency Forward Contracts Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block] MC Voyager SPV II LLC (Equity Commitment) MC Voyager SPV II LLC (Equity Commitment) [Member] MC Voyager SPV II LLC (Equity Commitment) Product Information [Line Items] Product Information [Line Items] Payment-in-kind interest income PIK interest income PIK interest capitalized (cost) Interest Income, Operating, Paid in Kind Investments Investments [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Receivable for unsettled trades Increase (Decrease) in Accounts Receivable Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] 2025 Class C Notes 2025 Class C Notes [Member] 2025 Class C Notes O 2024 M3 Dividends O 2024 M3 Aggregate Dividends [Member] O 2024 M3 Aggregate Dividends Consolidated Entities [Domain] Consolidated Entities [Domain] Stockholder distributions - return of capital (in dollars per share) Investment Company, Tax Return of Capital Distribution, Per Share S 2023 M12 Dividends S 2023 M12 Dividends [Member] S 2023 M12 Dividends Transportation: Cargo Transportation Sector [Member] Ratio of expenses to average net assets with waivers and expense reimbursement Investment Company, Expense Ratio, after Fee Waiver and Incentive Fee Deduction Maximum percentage of advance rate on the portfolio Line Of Credit Facility, Maximum Advance Rate On The Portfolio Percentage of line of credit facility, maximum advance rate on the portfolio. Tender Offering Tender Offering [Member] Tender Offering O M8 2025 Dividends O 2025 M8 Aggregate Dividends [Member] O 2025 M8 Aggregate Dividends Financial Instrument [Axis] Financial Instrument [Axis] Transactions with Affiliate Companies Investments in and Advances to Affiliates, Schedule of Investments [Text Block] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Executive Category: Executive Category [Axis] Foreign Currency Forward Contract Foreign Exchange Forward [Member] Telecommunications Telecommunications Represents the information pertaining to Telecommunications Sector. Repayments of debt Repayments of Debt Foreign Currency Forward Contract 62 Foreign Currency Forward Contract 62 [Member] Foreign Currency Forward Contract 62 December 2028 Notes December 2028 Notes December 2028 Note Purchase Agreement [Member] Represents the information pertaining to 2028 Notes. Probability weighting of alternative outcomes Probability Weighting of Alternative Outcomes [Member] Measurement input using probability weighting of alternative outcomes. Current Fiscal Year End Date Current Fiscal Year End Date Total equity commitment Total equity investment Committed Equity Investment Committed Equity Investment Warrants to purchase percentage of equity Warrants to Purchase Percentage of Equity Percentage of equity that the warrants can purchase. Net realized gain (loss) Realized Gain (Loss), Derivative and Foreign Currency Transaction Price Change, Operating, before Tax Net realized gain (loss): Realized Investment Gains (Losses) [Abstract] Professional fees Professional Fees Incentive fee payable as a percentage of pre-incentive fee net investment income, if such income does not exceed the hurdle rate in any calendar quarter Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Does Not Exceed The Hurdle Rate In Any Calendar Quarter Represents information pertaining to incentive fee payable as a percentage of pre-incentive fee net investment income, if such income does not exceed the hurdle rate in any calendar quarter. Net unrealized loss on foreign currency forward contracts Derivative Liability Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Foreign currency forward contract 45 Foreign Currency Forward Contract 45 [Member] Foreign Currency Forward Contract 45 Schedule of Fair Value Measurements of Investments and Foreign Currency Forward Contracts, by Major Class According to the Fair Value Hierarchy Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Payment-in-kind interest capitalized Interest Income, Operating, Paid In Kind, Capitalized, Operating Activities Interest Income, Operating, Paid In Kind, Capitalized, Operating Activities Energy: Oil & Gas Energy Sector [Member] Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Measure: Measure [Axis] Percentage of equity interest Percentage of Equity Interest Held The percentage of equity interest held. Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Interest and dividend receivable Dividend and Interest Receivable O 2023 M5 Dividends O 2023 M5 Aggregate Dividends [Member] O 2023 M5 Aggregate Dividends Innovative Artists Entertainment, LLC Innovative Artists Entertainment, LLC [Member] Innovative Artists Entertainment, LLC Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Maximum borrowing capacity, percentage of the principal balance of company's portfolio company investments Line Of Credit Facility, Maximum Borrowing Capacity, Percentage On Principal Balance Of Company's Portfolio Company Investments Percentage line of credit facility, maximum borrowing capacity, percentage on principal balance of company's portfolio company investments. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Amortization of debt issuance costs Amortization of debt issuance costs Amortization of Debt Issuance Costs Entity Tax Identification Number Entity Tax Identification Number Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] United Kingdom, Pounds United Kingdom, Pounds Common stock, issued (in shares) Common Stock, Shares, Issued Foreign Currency Forward Contract 60 Foreign Currency Forward Contract 60 [Member] Foreign Currency Forward Contract 60 Margin Rate Margin Rate [Member] Margin Rate Schedule of Distributions Reinvested Dividends Reinvested [Table Text Block] Tabular disclosure of information related to dividends reinvested, including paid and unpaid dividends. Entity Public Float Entity Public Float Trading Arrangement: Trading Arrangement [Axis] Foreign Currency Forward Contract 47 Foreign Currency Forward Contract 47 [Member] Foreign Currency Forward Contract 47 When The Outstanding Borrowings Are Less Than Or Equal To 35% Of The Facility When The Outstanding Borrowings Are Less Than Or Equal To 35% Of The Facility [Member] When The Outstanding Borrowings Are Less Than Or Equal To 35% Of The Facility Total Shareholder Return Amount Total Shareholder Return Amount Credit Facility, Utilized Portion Of The Facility, Tranche [Axis] Credit Facility, Utilized Portion Of The Facility, Tranche [Axis] Credit Facility, Utilized Portion Of The Facility, Tranche Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Stock issued in connection with dividend reinvestment plan (in shares) DRIP shares issued (in shares) DRIP shares issued (in shares) Stock Issued During Period, Shares, Dividend Reinvestment Plan Repurchase of common stock (in shares) Shares Repurchased (in shares) Stock Repurchased During Period, Shares Operating expenses: Operating Expenses [Abstract] Asset Class [Domain] Asset Class [Domain] Tax expense for taxable subsidiaries Income (Loss) from Subsidiaries, Tax Expense (Benefit) Gains (losses) included in earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Incentive fees payable Increase (Decrease) in Incentive Fee Payable Statement Statement [Line Items] Media: Broadcasting & Subscription Media: Broadcasting & Subscription [Member] Media: Broadcasting & Subscription Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Subsequent Event Subsequent Event [Line Items] Foreign Currency Forward Contract 48 Foreign Currency Forward Contract 48 [Member] Foreign Currency Forward Contract 48 Common Stock Common Stock [Member] Utilities: Electric Utilities Electric Sector [Member] Utilities Electric Sector Series F Senior Unsecured Notes July 2030 Series F Senior Unsecured Notes July 2030 [Member] Series F Senior Unsecured Notes July 2030 NBPT Acquisition LLC NBPT Acquisition LLC [Member] NBPT Acquisition LLC Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Statistical Measurement [Domain] Statistical Measurement [Domain] Related Party Transaction [Axis] Related Party Transaction [Axis] Weighted average interest rate Long-Term Debt, Weighted Average Interest Rate, at Point in Time Foreign Currency Forward Contract 51 Foreign Currency Forward Contract 51 [Member] Foreign Currency Forward Contract 51 Foreign currency forward contract 3 Foreign Currency Forward Contract 3 [Member] Foreign Currency Forward Contract 3 Asset Class [Axis] Asset Class [Axis] Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Net investment income per share - basic (in dollars per share) Net Investment Income Per Share, Basic Represents the net investment income per share, basic. Open Forward Foreign Currency Contract, Identifier [Axis] Open Forward Foreign Currency Contract, Identifier [Axis] Foreign currency forward contract 69 Foreign currency forward contract 69 [Member] Foreign currency forward contract 69 July 2030 Notes July Twenty Thirty Notes [Member] July Twenty Thirty Notes Schedule of Distributions Declared Dividends Declared [Table Text Block] Below Investment Grade Event Below Investment Grade Event [Member] Below Investment Grade Event Pledged Status [Axis] Pledged Status [Axis] Part one incentive fees Incentive Fee Expense, Part One Amount of expense for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP) Part one. Foreign currency forward contract 64 Foreign currency forward contract 64 [Member] Foreign currency forward contract 64 Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Class B Senior Secured Notes Class B Senior Secured Notes [Member] This member stands for Class B senior secured notes. Net increase (decrease) in net assets resulting from operations per share - basic (in dollars per share) Earnings Per Share, Basic Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities When the outstanding borrowings are less than or equal to 60% of the facility When The Outstanding Borrowings Are Less Than Or Equal To 60% Of The Facility [Member] This member stands when the outstanding borrowings are less than or equal to 60% of the facility. O M7 2025 Dividends O 2025 M7 Aggregate Dividends [Member] O 2025 M7 Aggregate Dividends O 2023 M12 Dividends O 2023 M12 Aggregate Dividends [Member] O 2023 M12 Aggregate Dividends Specified percentage of hurdle rate, considered for payment of incentive fee, prior to an exchange listing Specified Percentage Of Hurdle Rate, Considered For Payment Of Incentive Fee, Prior To An Exchange Listing Specified Percentage Of Hurdle Rate, Considered For Payment Of Incentive Fee, Prior To An Exchange Listing Net gain (loss): Gain (Loss) on Investments [Abstract] Schedule of Committed Capital Schedule Of Committed Capital [Table Text Block] Schedule Of Committed Capital EBITDA multiples Measurement Input, EBITDA Multiple [Member] Measurement Input Type [Domain] Measurement Input Type [Domain] Revolving credit facility maximum borrowing capacity percentage Revolving Credit Facility Maximum Borrowing Capacity Percentage Revolving credit facility maximum borrowing capacity percentage. Total net change in unrealized gain (loss) on investments attributable to Level 3 investments still held Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Ordinary income Investment Company, Distribution, Ordinary Income Derivative Instruments Derivative Instruments, Gain (Loss) [Line Items] Net increase (decrease) in net assets resulting from operations (in dollars per share) Investment Company, Investment Income (Loss) from Operations, Per Share Total liabilities and total net assets Liabilities and Equity Additional interest rate Debt Instrument Additional Interest Rate Above Stated Percentage Debt Instrument Additional Interest Rate Above Stated Percentage Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] S 2023 M10 Dividends S 2023 M10 Dividends [Member] S 2023 M10 Dividends 2022 Subordinated Notes 2022 Subordinated Notes [Member] 2022 Subordinated Notes Foreign Currency Forward Contract 56 Foreign Currency Forward Contract 56 [Member] Foreign Currency Forward Contract 56 Accounting Policies [Abstract] Accounting Policies [Abstract] Foreign currency forward contracts asset (liability) Forward Contracts [Member] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Upfront loan origination and closing fees received Proceeds From Upfront Loan Origination And Closing Fees On Debt Investments Amount of cash inflow from upfront loan origination and closing fees on debt investments. Transfers in (out) Investments In And Advances To Affiliates, At Fair Value Transfer In (Out) Investments In And Advances To Affiliates, At Fair Value Transfer In (Out) Distributions Dividends Payable [Line Items] Pay vs Performance Disclosure [Line Items] Liabilities Liabilities [Abstract] Summary of Investment Holdings [Table] Investment Holdings [Table] Foreign currency forward contract 35 Foreign Currency Forward Contract 35 [Member] Foreign Currency Forward Contract 35 Average stated interest rate Long-Term Debt, Weighted Average Interest Rate, over Time Interest Rate Scenario [Axis] Interest Rate Scenario [Axis] Interest Rate Scenario Reconciliation of beginning and ending balances for investments at fair value that use Level 3 inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Interest and dividend receivable Increase (Decrease) in Interest and Dividends Receivable Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2023 Class A-R Senior Secured Notes 2023 Class A-R Senior Secured Notes [Member] 2023 Class A-R Senior Secured Notes Cash Cash Measurement Input Type [Axis] Measurement Input Type [Axis] Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Axis] Name Measure Name Jumpstart Holdco, Inc. Jumpstart Holdco, Inc. [Member] Jumpstart Holdco, Inc. Secured Debt Secured Debt [Member] Industry Sector [Domain] Industry Sector [Domain] Unsecured Debt Unsecured Debt [Member] Foreign currency forward contract 72 Foreign currency forward contract 72 [Member] Foreign currency forward contract 72 Healthcare & Pharmaceuticals Healthcare & Pharmaceuticals Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Healthcare & Pharmaceuticals. Services: Consumer Services Consumer Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Services: Consumer. Total debt, less unamortized debt issuance costs Carrying Value Carrying Value Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] Total assets Assets PIK dividends Dividend Income, Operating, Paid in Kind Restricted Cash and Cash Equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] During the reinvestment period Reinvestment Period [Member] This member stands for reinvestment during the period. Geographical [Domain] Geographical [Domain] Income Taxes Income Tax, Policy [Policy Text Block] Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Ratio of total assets to total liabilities Line Of Credit Facility, Covenants, Ratio of Total Assets To Total Liabilities Line Of Credit Facility, Covenants, Ratio of Total Assets To Total Liabilities Aerospace & Defense Aerospace Sector [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Foreign currency forward contract 43 Foreign Currency Forward Contract 43 [Member] Foreign Currency Forward Contract 43 Subordinated 2025Notes Subordinated 2025 Notes [Member] Subordinated 2025 Notes SPV MC Income Plus Financing SPV LLC [Member] This member stands for MC Income Plus Financing SPV LLC. Investments in and Advances to Affiliates, Activity [Line Items] Investments in and Advances to Affiliates, Activity [Line Items] Company investments as percentage of net assets Company Investment As Percentage Of Net Assets Represents information pertaining to company investments as percentage of net assets. Class A Senior Secured Notes Class A Senior Secured Notes [Member] This member stands for Class A senior secured notes. Amount per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Principal Investment Owned, Balance, Principal Amount Non-cash purchases of investments Transfer to Investments O 2023 M6 Dividends O 2023 M6 Aggregate Dividends [Member] O 2023 M6 Aggregate Dividends Level 2 Fair Value, Inputs, Level 2 [Member] Document Financial Statement Error Correction [Flag] Document Financial Statement Error Correction [Flag] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Foreign currency forward contract 14 Foreign Currency Forward Contract 14 [Member] Foreign Currency Forward Contract 14 Baystate Sewage Disposal, LLC Baystate Sewage Disposal, LLC [Member] Baystate Sewage Disposal, LLC Related Party Related Party [Member] Asset pledged as collateral Asset Pledged as Collateral [Member] Schedule of Components of the Company's Interest Expense and Other Debt Financing Expenses, Average Debt Outstanding Balances and Average Stated Interest Rates Schedule Of Interest Expense, Other Debt Financing Expenses, Average Outstanding Balances And Average Stated Interest Rates [Table Text Block] Tabular disclosure of interest expense, other debt financing expenses, average outstanding balances and average stated interest rates. O 2024 M6 Dividends O 2024 M6 Aggregate Dividends [Member] O 2024 M6 Aggregate Dividends PEO PEO [Member] Supplemental disclosure of non-cash activities: Noncash Investing and Financing Items [Abstract] S 2023 M7 Dividends S 2023 M7 Dividends [Member] S 2023 M7 Dividends Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Foreign currency forward contract 13 Foreign Currency Forward Contract 13 [Member] Foreign Currency Forward Contract 13 Asset coverage ratio Asset Coverage Ratio, Percentage Percentage of asset coverage ratio based on aggregate borrowings outstanding. Percentage of company's realized capital gains payable as incentive fee Incentive Fee Payable As A Percentage Of Company's Realized Capital Gains Represents information pertaining to incentive fee payable as a percentage of the Company's realized capital gains as of the end of the fiscal year. Accumulated undistributed (overdistributed) earnings Increase (decrease) in accumulated undistributed (overdistributed) earnings Retained Earnings [Member] O M6 2025 Dividends O 2025 M6 Aggregate Dividends [Member] O 2025 M6 Aggregate Dividends Cash and restricted cash and cash equivalents, beginning of year Cash and restricted cash and cash equivalents, end of year Total cash and restricted cash and cash equivalents shown on the Consolidated Statements of Cash Flows Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Net unrealized gain on foreign currency forward contracts Derivative Asset Sale of Stock [Domain] Sale of Stock [Domain] O 2023 M7 Dividends O 2023 M7 Aggregate Dividends [Member] O 2023 M7 Aggregate Dividends Interest payable Increase (Decrease) in Interest Payable, Net Retail Retail Sector [Member] Total return based on average net asset value Investment Company, Total Return Dividends [Abstract] Dividends [Abstract] Interest expense Interest Expense, Debt, Excluding Amortization Net investment income before income taxes Net Investment Income Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Foreign currency forward contracts asset (liability) Liabilities, Fair Value Disclosure Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Foreign currency forward contract 21 Foreign Currency Forward Contract 21 [Member] Foreign Currency Forward Contract 21 Distributions declared to stockholders Total Dividend distribution Investment Company, Dividend Distribution O 2023 M11 Dividends O 2023 M11 Aggregate Dividends [Member] O 2023 M11 Aggregate Dividends Foreign currency forward contract 19 Foreign Currency Forward Contract 19 [Member] Foreign Currency Forward Contract 19 City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Second Avenue S F R Holdings I I L L C Second Avenue S F R Holdings I I L L C [ Member] Second Avenue S F R Holdings I I L L C [ Member] Foreign currency forward contract 26 Foreign Currency Forward Contract 26 [Member] Foreign Currency Forward Contract 26 General and administrative expenses General and Administrative Expense Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] O 2024 M5 Dividends O 2024 M5 Aggregate Dividends [Member] O 2024 M5 Aggregate Dividends Excess of capital gains (in percent) Percentage Of Capital Gains The percentage of capital gains. Related Party Transactions [Abstract] Related Party Transactions [Abstract] Incentive fees Total incentive fees Incentive Fee Expense 2025 ABS Interest expense - 2025 ABS Asset Backed Securitization 2025 [Member] Asset Backed Securitization 2025 O 2024 M8 Dividends O 2024 M8 Aggregate Dividends [Member] O 2024 M8 Aggregate Dividends Foreign currency forward contract 73 Foreign currency forward contract 73 [Member] Foreign currency forward contract 73 MC Management Monroe Capital Management Advisors, LLC [Member] Represents the information pertaining to Monroe Capital Management Advisors, LLC, Our administrative advisor. Foreign currency forward contract 27 Foreign Currency Forward Contract 27 [Member] Foreign Currency Forward Contract 27 International Non-US [Member] Percentage of equity commitments Percentage of Equity Commitments The percentage of equity commitments. Auditor Name Auditor Name Schedule of Financial Highlights and Supplemental Ratios Investment Company, Financial Highlights [Table Text Block] Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Summit Professional Education, LLC Summit Professional Education, LLC [Member] Summit Professional Education, LLC Other Performance Measure, Amount Other Performance Measure, Amount Foreign currency forward contract 34 Foreign Currency Forward Contract 34 [Member] Foreign Currency Forward Contract 34 Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Debt issuance costs capitalized Payments of Debt Issuance Costs Ratio of net investment income to average net assets Investment Company, Investment Income (Loss) Ratio Estimated cost basis of investment for U.S. federal income tax purposes Investment, Tax Basis, Cost Related Party [Domain] Related and Nonrelated Parties [Domain] SPV V Credit Facility SPV V Credit Facility SPV V Credit Facility [Member] SPV V Credit Facility Nastel Technologies, LLC Nastel Technologies, LLC [ Member] This stands for Nastel Technologies, LLC. Net increase (decrease) in cash and restricted cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Administrative expenses Professional Fees, Administrative Service Fees And General And Administrative Expenses Amount of expenses relating to Professional fees, Administrative service fees and General and administrative expenses. Derivative Instrument [Axis] Derivative Instrument [Axis] Total restricted cash and cash equivalents Restricted Cash Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Private Offering Private Offering [Member] Private Offering Return of capital Investment Company, Distribution, Return Of Capital Investment Company, Distribution, Return Of Capital Debt Covenant [Domain] Debt Covenant [Domain] Debt Covenant [Domain] Investments [Abstract] Investments [Abstract] Entity [Domain] Entity [Domain] Foreign currency forward contract 22 Foreign Currency Forward Contract 22 [Member] Foreign Currency Forward Contract 22 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] O 2023 M4 Dividends O 2023 M4 Aggregate Dividends [Member] O 2023 M4 Aggregate Dividends Cash interest paid during the year Interest Paid, Excluding Capitalized Interest, Operating Activity Gross Amount of Unrealized Gain Derivatives, Gross Unrealized Gain Amount of gross unrealized gain on derivatives. Document Fiscal Year Focus Document Fiscal Year Focus Long-term debt, fair value of collateral held Long-Term Debt, Fair Value Of Collateral Held Long-Term Debt, Fair Value Of Collateral Held Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Class C Senior Secured Notes Class C Senior Secured Notes [Member] This member stands for Class C senior secured notes. Accordion feature, total facility amount Line Of Credit Facility, Maximum Borrowing Capacity, Including Accordion Feature Line Of Credit Facility, Maximum Borrowing Capacity, Including Accordion Feature Net change in unrealized gain (loss): Unrealized Investment Gains (Losses) [Abstract] No definition available. Distributions Distributions [Text Block] The entire disclosure for distributions. Revenue Market Yields Measurement Input, Probability Revenue Market Yields [Member] Measurement Input, Probability Revenue Market Yields West US West Region [Member] Derivative Instruments Derivatives, Policy [Policy Text Block] Segment Reporting Segment Reporting Disclosure [Text Block] Incentive fee payable as a percentage of pre-incentive fee net investment income, if such income exceeds the specified hurdle rate in any calendar quarter, following an exchange listing Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Exceeds The Specified Hurdle Rate In Any Calendar Quarter, Following An Exchange Listing Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Such Income Exceeds The Specified Hurdle Rate In Any Calendar Quarter, Following An Exchange Listing Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Senior secured loans Senior secured loans Senior Loans [Member] CHANGES IN NET ASSETS Increase (Decrease) in Stockholders' Equity [Roll Forward] 2028 Note Purchase Agreement Series E Senior Unsecured Notes July 2028 [Member] Series E Senior Unsecured Notes July 2028 Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Number of shares allowed to be purchased (in shares) Share Repurchase Program, Authorized, Number of Shares Weighted Average Mean Weighted Average [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Restricted cash and cash equivalents Restricted cash and cash equivalents Restricted Cash and Cash Equivalent, Current Volatility Measurement Input, Price Volatility [Member] Construction & Building Construction Sector [Member] Repurchases of common stock Stock Repurchased During Period, Value O 2023 M1 Dividends O 2023 M1 Dividends [Member] O 2023 M1 Dividends Audit Information [Abstract] Audit Information [Abstract] Audit Information Incentive fee payable as a percentage of pre-incentive fee net investment income, if portion of such income exceeds the hurdle rate but is less than the specified hurdle rate in any calendar quarter Incentive Fee Payable As A Percentage Of Pre-Incentive Fee Net Investment Income, If Portion Of Such Income Exceeds The Hurdle Rate But Is Less Than The Specified Hurdle Rate In Any Calendar Quarter Represents information pertaining to incentive fee payable as a percentage of pre-incentive fee net investment income, if portion of such income exceeds the hurdle rate but is less than the specified hurdle rate in any calendar quarter. Zodega Landscaping, LLC Zodega Landscaping, LLC [Member] Zodega Landscaping, LLC Schedule of Issuance of Shares Schedule of Stockholders Equity [Table Text Block] Revolving Credit Facility Revolving Credit Facility [Member] July 2028 Notes July 2028 Notes [Member] July 2028 Notes Foreign currency forward contract 18 Foreign Currency Forward Contract 18 [Member] Foreign Currency Forward Contract 18 Option pricing model Valuation Technique, Option Pricing Model [Member] Arrangement Duration Trading Arrangement Duration Investment, Issuer Name [Domain] Investment, Issuer Name [Domain] Foreign currency forward contract 7 Foreign Currency Forward Contract 7 [Member] Foreign Currency Forward Contract 7 Subordinated 2022 Notes Subordinated 2022 Notes [Member] This member stands for subordinated 2022 notes. Investment Owned, At Cost Investment Owned, At Cost [Member] Investment Owned, At Cost Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Assets Assets [Abstract] Credit Facility [Axis] Credit Facility [Axis] Purchases (cost) Investments in and Advances to Affiliates, at Fair Value, Gross Additions Underlying Security Market Price Change Underlying Security Market Price Change, Percent Debt Instrument [Axis] Debt Instrument [Axis] Foreign currency forward contract 8 Foreign Currency Forward Contract 8 [Member] Foreign Currency Forward Contract 8 Fair Value Measurements Fair Value Disclosures [Text Block] Credit Facility [Domain] Credit Facility [Domain] Unrealized gain (loss) of investments Net change in unrealized (gain) loss on investments Net change in unrealized gain (loss) Debt and Equity Securities, Unrealized Gain (Loss) Net Assets Equity, Attributable to Parent [Abstract] Receivable for unsettled trades Receivable For Unsettled Trades Current And Non Current Carrying amount of the receivable portion of the unsettled trades. Proceeds from short-term borrowings Proceeds from Short-Term Debt % of Net Assets Investment Owned, Net Assets, Percentage September 2029 Notes Senior Unsecured Notes September 2029 [Member] Senior Unsecured Notes September 2029 Interest rate Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Fair value of the company's investments on non-accrual status Fair Value, Option, Loans Held as Assets, Aggregate Amount in Nonaccrual Status Entity Voluntary Filers Entity Voluntary Filers Triad Financial Services, Inc. Triad Financial Services, Inc [Member] Triad Financial Services, Inc. Reinvestment Period [Domain] Reinvestment Period [Domain] Reinvestment Period [Domain] Base management fees payable Management Fee Payable Foreign currency forward contract 9 Foreign Currency Forward Contract 9 [Member] Foreign Currency Forward Contract 9 Financial Highlights Investment Company, Financial Highlights [Text Block] Entity Registrant Name Entity Registrant Name Loans at fair value where valuation (unadjusted) is obtained from third-party pricing service Loans At Fair Value Where Valuation (Unadjusted) Is Obtained From Third-Party Pricing Service Represents the amount of loans at fair value where valuation (unadjusted) is obtained from third-party pricing service. Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] 2022 Issuer Monroe Capital Income Plus Issuer I LLC [Member] Monroe Capital Income Plus Issuer I LLC When the outstanding borrowings are greater than 60% of the facility When The Outstanding Borrowings Are Greater Than 60% Of The Facility [Member] This member stands when the outstanding borrowings are greater than 60% of the facility. Foreign currency forward contract 30 Foreign Currency Forward Contract 30 [Member] Foreign Currency Forward Contract 30 Environmental Industries Environmental Industries Represents the information pertaining to Environmental Industries Sector. 2022 Class C Notes 2022 Class C Notes [Member] 2022 Class C Notes Number of operating segments Number of Operating Segments Net accretion of discounts and amortization of premiums Accretion (Amortization) of Discounts and Premiums, Investments Schedule of SBA Debentures Outstanding Schedule of Debt [Table Text Block] Investment Owned, At Fair Value Investment Owned, At Fair Value [Member] Investment Owned, At Fair Value Related Party [Axis] Related and Nonrelated Parties [Axis] Foreign currency forward contract 71 Foreign currency forward contract 71 [Member] Foreign currency forward contract 71 Foreign currency forward contract 31 Foreign Currency Forward Contract 31 [Member] Foreign Currency Forward Contract 31 Daily Simple RFR Daily Simple Risk Free Rate [Member] Represents the information pertaining to RFR. Fair value, asset, recurring basis, still held, unrealized gain (loss), statement of income or comprehensive income [extensible enumeration] Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Restatement Determination Date: Restatement Determination Date [Axis] All Currencies [Domain] All Currencies [Domain] SOFR, CORRA , Eurocurrency, And RFR Rates SOFR, CORRA , Eurocurrency, And RFR Rates [Member] SOFR, CORRA , Eurocurrency, And RFR Rates Name Trading Arrangement, Individual Name Unfunded commitments Investment Company, Financial Support to Investee Contractually Required, Not Provided, Amount Net change in unrealized gain (loss) on investments Debt And Equity Securities, Unrealized Gain (Loss) [Member] Debt And Equity Securities, Unrealized Gain (Loss) O 2023 M8 Dividends O 2023 M8 Aggregate Dividends [Member] O 2023 M8 Aggregate Dividends Aggregate Principal Amount Committed Total aggregate principal amount committed/ outstanding Principal amount Debt Instrument, Face Amount Foreign currency forward contract 23 Foreign Currency Forward Contract 23 [Member] Foreign Currency Forward Contract 23 S F R Holdco 2, L L C S F R Holdco 2, L L C [Member] S F R Holdco 2, L L C S 2024 M7 Dividends S 2024 M7 Dividends [Member] S 2024 M7 Dividends SPV III MC Income Plus Financing SPV III LLC [Member] MC Income Plus Financing SPV III LLC Share Repurchase Program [Axis] Share Repurchase Program [Axis] Investment, Issuer Affiliation [Domain] Investment, Issuer Affiliation [Domain] Name Awards Close in Time to MNPI Disclosures, Individual Name CONSOLIDATED SCHEDULE OF INVESTMENTS (Foreign currency forward contracts) Open Forward Foreign Currency Contract [Line Items] O 2023 M3 Dividends O 2023 M3 Aggregate Dividends [Member] O 2023 M3 Aggregate Dividends Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Media: Diversified & Production Media: Diversified & Production Represents the information pertaining to Media: Diversified & Production Sector. ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Foreign Currency Forward Contract 57 Foreign Currency Forward Contract 57 [Member] Foreign Currency Forward Contract 57 Auditor Firm ID Auditor Firm ID Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Short-Term Borrowings Short-Term Debt [Member] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Light Wave Dental Management, LLC Light Wave Dental Management, LLC [Member] Light Wave Dental Management, LLC [Member] Number of borrowers with loan or preferred equity securities Number Of Borrowers On With Loan Or Preferred Equity Securities Represents the number of borrowers on with loan or preferred equity securities. Net change in unrealized gain (loss) Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction Price Change, Operating, before Tax Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Revolving Credit Facility With British Pound Denominated Borrowings Revolving Credit Facility With British Pound Denominated Borrowings [Member] Revolving Credit Facility With British Pound Denominated Borrowings Australia, Dollars Australia, Dollars Revenue Recognition Revenue [Policy Text Block] SPV II MC Income Plus Financing SPV II LLC [Member] This member stands for MC Income Plus Financing SPV II LLC. Ratio of expenses to average net assets without waivers Investment Company, Expense Ratio before Incentive Allocation Investments in and Advances to Affiliates [Table] Investments in and Advances to Affiliates [Table] IDIG Parent, LLC IDIG Parent, LLC [Member] IDIG Parent, LLC [Member] Interest payable Interest Payable July 2028 Notes July Twenty Twenty Eight Notes [Member] July Twenty Twenty Eight Notes Company investments as percentage of total assets Investment Owned Percent Of Total Assets Represents information pertaining to company investments as percentage of total assets. When The Outstanding Borrowings Are Greater Than 35% Of The Facility When The Outstanding Borrowings Are Greater Than 35% Of The Facility [Member] When The Outstanding Borrowings Are Greater Than 35% Of The Facility Proceeds from principal payments and sale of investments and settlement of forward contracts Proceeds from Disposition of Investment, Operating Activity Foreign Currency Forward Contract 50 Foreign Currency Forward Contract 50 [Member] Foreign Currency Forward Contract 50 All Executive Categories All Executive Categories [Member] Common stock, $0.001 par value, 600,000 and 300,000 shares authorized, 286,677 and 198,704 shares issued and outstanding, respectively Common Stock, Value, Issued Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Variable Rate Period [Axis] Variable Rate Period [Axis] Variable Rate Period Commitments and contingencies (See Note 12) Commitments and Contingencies No Trading Symbol Flag No Trading Symbol Flag O M4 2025 Dividends O 2025 M4 Aggregate Dividends [Member] O 2025 M4 Aggregate Dividends Investments, measurement input Investment Company, Investment Owned, Measurement Input Restricted Cash and Cash Equivalent Item [Line Items] Restricted Cash and Cash Equivalent Item [Line Items] Consumer Goods: Durable Consumer Goods Durable Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Consumer Goods: Durable. Schedule of Components of the Company's Investment Income Investment Income [Table Text Block] Discount accretion Investments in and Advances to Affiliates, at Fair Value, Discount Accretion Amount of accretion of dividend to investment in and advance to the affiliate. High Tech Industries High Tech Industries Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in High Tech Industries. Credit Facility, Utilized Portion Of The Facility, Tranche [Domain] Credit Facility, Utilized Portion Of The Facility, Tranche [Domain] Credit Facility, Utilized Portion Of The Facility, Tranche [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Wendel Momentum US Bidco LLC [Member] Momentum US Bidco LLC Media: Diversified & Production Media: Diversified & Production [Member] Media: Diversified & Production Foreign currency forward contract 38 Foreign Currency Forward Contract 38 [Member] Foreign Currency Forward Contract 38 O 2023 M2 Dividends O 2023 M2 Dividends [Member] O 2023 M2 Dividends Foreign currency forward contract 4 Foreign Currency Forward Contract 4 [Member] Foreign Currency Forward Contract 4 Stockholder distributions paid Investment Company, Payments of Dividend Distribution Amount of cash outflow to dividend distribution. 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Name Forgone Recovery, Individual Name Stockholder distributions - ordinary income (in dollars per share) Investment Company, Distribution to Shareholders, Per Share Foreign currency forward contracts Net change in unrealized (gain) loss on foreign currency forward contracts Unrealized Gain
(Loss) Net change in unrealized gain (loss) on foreign currency forward contracts Unrealized Gain (Loss) on Derivatives O 2023 M10 Dividends O 2023 M10 Aggregate Dividends [Member] O 2023 M10 Aggregate Dividends 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] Weighted average interest rate Debt, Weighted Average Interest Rate Reconciliation of cash and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Banking Banking Sector 1 [Member] Banking Sector 1 Minimum net worth Debt Instrument, Coverage, Minimum Net Worth Debt Instrument, Coverage, Minimum Net Worth Financial Support for Nonconsolidated Legal Entity [Line Items] Financial Support for Nonconsolidated Legal Entity [Line Items] Consumer Goods: Non-Durable Consumer Goods Non-Durable Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Consumer Goods: Non-Durable. Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Foreign currency forward contract 36 Foreign Currency Forward Contract 36 [Member] Foreign Currency Forward Contract 36 Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Expenses not currently deductible Investment Company, Tax Basis, Expense, Not Currently Deductible Geographical [Axis] Geographical [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Chemicals, Plastics & Rubber Chemicals, Plastics & Rubber [Member] Chemicals, Plastics & Rubber Foreign currency forward contract 2 Foreign Currency Forward Contract 2 [Member] Foreign Currency Forward Contract 2 2025 Issuer Monroe Capital Income Plus Issuer III LLC [Member] Monroe Capital Income Plus Issuer III LLC Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Interest income Interest Income Interest Income, Operating Title of 12(b) Security Title of 12(b) Security Accounts payable Accounts Payable 2025 Class B Notes 2025 Class B Notes [Member] 2025 Class B Notes Per common share data: Earnings Per Share [Abstract] Net investment income Net investment income Investment Income, Operating, after Expense and Tax Return of capital distributions Proceeds from Equity Method Investment, Distribution, Return of Capital Subsidiary, ownership percentage, parent Subsidiary, Ownership Percentage, Parent Administrative service fees Administrative agreement service fee Administrative Fees Expense Foreign Currency Forward Contract 59 Foreign Currency Forward Contract 59 [Member] Foreign Currency Forward Contract 59 Foreign currency forward contract 39 Foreign Currency Forward Contract 39 [Member] Foreign Currency Forward Contract 39 Fair Value Measurements Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Income taxes, including excise taxes Investment Income, Operating, Tax Expense (Benefit) Award Timing Disclosures [Line Items] Net realized gain (loss) Realized Gain (Loss), Investment and Derivative, Operating, after Tax Measurement Frequency [Domain] Measurement Frequency [Domain] Stock Issuances and Share Repurchase Program Equity [Text Block] Net change in unrealized (gain) loss Investment Company, Tax Basis, Unrealized (Gain) Loss, Not Currently (Taxable) Deductible 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 Subsequent Event [Table] Subsequent Event [Table] MC Aviation Limited MC Aviation Limited (units) [Member] MC Aviation Limited (units) Restrictions on Cash and Cash Equivalents [Table] Restrictions on Cash and Cash Equivalents [Table] Repurchases of common stock Total Cost Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Alternate base rate Base Rate [Member] Price per share (in dollars per share) Shares Issued, Price Per Share Ordinary dividend per share (in usd per share) Common Stock, Dividends, Per Share, Declared, Ordinary Common Stock, Dividends, Per Share, Declared, Ordinary Interest rate Interest rate Investment Interest Rate Line of Credit Line of Credit [Member] Services: Business Services Business Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in Services: Business. Accumulated undistributed (overdistributed) earnings Retained Earnings (Accumulated Deficit) Schedule of Total Shares Repurchased that were Validly Tendered Under the Share Repurchase Program and not Withdrawn Class of Treasury Stock [Table Text Block] O 2023 M9 Dividends O 2023 M9 Aggregate Dividends [Member] O 2023 M9 Aggregate Dividends 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] Percentage equal to net assets Percentage Equal To Net Assets From Financial Covenants Percentage equal to net assets from financial covenants. Subsequent Event Type [Domain] Subsequent Event Type [Domain] 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] Net ordinary income of deferrals and elections (in percent) Net Ordinary Income Of Deferrals And Elections (In Percent) The percentage of net ordinary income of deferrals and elections. Interest expense - November 2028 Notes NovemberTwenty Twenty Eight Notes [Member] NovemberTwenty Twenty Eight Notes Net realized gain (loss) on investments Debt And Equity Securities, Realized Gain (Loss) [Member] Debt And Equity Securities, Realized Gain (Loss) Statement [Table] Statement [Table] Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash 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] Nondeductible U.S. federal excise tax Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent Variable Rate [Domain] Variable Rate [Domain] Organization and Principal Business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Reconciliation of the Beginning and Ending Balances for Investments at Fair Value that Use Level 3 Inputs Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Base management fees payable Increase (Decrease) in Management Fee Payable FIRE: Finance FIRE Finance Sector [Member] Represents the information pertaining to Sector of the economy consisting of companies engaged in FIRE: Finance. All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Interest expense - September 2029 Notes September Twenty Twenty Nine Notes [Member] September Twenty Twenty Nine Notes S F R Holdco, L L C S F R Holdco, L L C [ Member] S F R Holdco, L L C [ Member] O 2024 M7 Dividends O 2024 M7 Aggregate Dividends [Member] O 2024 M7 Aggregate Dividends Termination Date Trading Arrangement Termination Date Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Foreign currency and other transactions Net realized (gain) loss on foreign currency and other transactions Realized Gain (Loss), Foreign Currency Transaction, before Tax Net assets Net assets at end of period Net Assets Dividends Payable [Table] Dividends Payable [Table] Interest rate in case of any U.S. dollar advances Interest Rate Scenario, One [Member] Represents the information pertaining to interest rate in case of any U.S. dollar advances. Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Per share data: Investment Company, Financial Highlights [Roll Forward] Investment, Issuer Name [Axis] Investment, Issuer Name [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Market yields Measurement Input, Probability Market Yields [Member] Measurement input using market yields. Schedule of Permanent Differences Reclassified for Tax Purposes Investment Company, Change in Net Assets [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Foreign Currency Forward Contract 52 Foreign Currency Forward Contract 52 [Member] Foreign Currency Forward Contract 52 Unitranche secured loans Unitranche secured loans Unitranche Debt [Member] Net expense (benefit) for U.S. federal excise tax Excise And Sales Taxes (Benefits) Excise And Sales Taxes (Benefits) Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Foreign Currency Forward Contract 55 Foreign Currency Forward Contract 55 [Member] Foreign Currency Forward Contract 55 MC Advisors Monroe Capital BDC Advisors, LLC [Member] Represents the information pertaining to Monroe Capital BDC Advisors, LLC, a registered investment adviser under the Investment Advisers Act of 1940, who is managing our Company. O M5 2025 Dividends O 2025 M5 Aggregate Dividends [Member] O 2025 M5 Aggregate Dividends Asset coverage ratio Debt Instrument Covenant Minimum Asset Coverage Ratio Debt Instrument Covenant Minimum Asset Coverage Ratio Use of Estimates Use of Estimates, Policy [Policy Text Block] Foreign Currency Forward Contract 53 Foreign Currency Forward Contract 53 [Member] Foreign Currency Forward Contract 53 Northeast US Northeast Region [Member] Investment Portfolio By Industry Concentration Risk Investment Portfolio By Industry Concentration Risk [Member] Investment Portfolio By Industry Concentration Risk Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Equity investments Equity investments Equity investments Equity Securities [Member] Total liabilities Liabilities Currency [Axis] Currency [Axis] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Foreign Currency Forward Contract 54 Foreign Currency Forward Contract 54 [Member] Foreign Currency Forward Contract 54 Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Enterprise value Valuation Technique Enterprise Value [Member] Valuation technique calculating enterprise value. Engineered Metal Solutions, Inc. Engineered Metal Solutions, Inc. [Member] Engineered Metal Solutions, Inc. Issuances of common stock Stock Issued During Period, Value, New Issues Variable Rate [Axis] Variable Rate [Axis] Unamortized Debt Issuance Costs Unamortized Debt Issuance Expense Counterparty Name [Axis] Counterparty Name [Axis] Total investment income Gross Investment Income, Operating Class B-R Senior Secured Notes Class B-R Senior Secured Notes [Member] Class B-R Senior Secured Notes SPV V MC Income Plus Financing SPV V LLC [Member] MC Income Plus Financing SPV V LLC Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Unamortized discounts and loan origination fees Debt Investments Unamortized Discounts And Loan Origination Fees Unamortized amount of discount and loan origination fees on debt investments, as of the balance sheet date.