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Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Level 3 Input Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Fair Value Inputs and Valuation Techniques (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Carrying Values and Fair Values of Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - RELATED PARTY TRANSACTIONS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - RELATED PARTY TRANSACTIONS - Schedule of Related Party Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - RELATED PARTY TRANSACTIONS - Schedule of Investment Fund Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - MIDDLE MARKET CREDIT FUND, LLC - 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Disclosure - MIDDLE MARKET CREDIT FUND, LLC - Schedule of Credit Facilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - MIDDLE MARKET CREDIT FUND II, LLC (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - STRUCTURED CREDIT PARTNERS JV, LLC - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - STRUCTURED CREDIT PARTNERS JV, LLC - Schedule of Capital Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - STRUCTURED CREDIT PARTNERS JV, LLC - Summarized Financial Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - STRUCTURED CREDIT PARTNERS JV, LLC - Summary of Portfolio (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - STRUCTURED CREDIT PARTNERS JV, LLC - Schedule of Industry and Geography Composition of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - STRUCTURED CREDIT PARTNERS JV, LLC - Schedule of Borrowings and Repayments Under the Credit Facilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - DERIVATIVE INSTRUMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - DERIVATIVE INSTRUMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - DERIVATIVE INSTRUMENTS - Schedule of Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - DERIVATIVE INSTRUMENTS - Schedule of Offsetting Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - BORROWINGS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - BORROWINGS - Schedule of Principal Amount and Carrying Amount (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - 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Disclosure - COMMMITMENTS AND CONTINGENCIES - Summary of Payment Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - COMMMITMENTS AND CONTINGENCIES - Schedule of Unfunded Commitments (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - NET ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - NET ASSETS - Summary of Preferred Stock Dividends Declared (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - NET ASSETS - Schedule of Stock Issued (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - NET ASSETS - Summary of Changes in Net Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - NET ASSETS - Schedule of Basic and Diluted Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - NET ASSETS - Summary of Dividends (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - CONSOLIDATED FINANCIAL HIGHLIGHTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - SEGMENT REPORTING (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - TAX (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - MERGER WITH CSL III - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - MERGER WITH CSL III - Schedule of Asset Acquisition (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - MERGER WITH CSL III - Schedule of Outstanding Forward Currency Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - MERGER WITH CSL III - Schedule of Outstanding Forward Currency Contracts (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink