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(Priority Term Loan)2021-12-310001544206SolAero Technologies Corp. (Priority Term Loan)2022-01-012022-12-310001544206SolAero Technologies Corp. (Priority Term Loan)2022-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2021-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2022-01-012022-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2022-12-310001544206SolAero Technologies Corp. (A2 Term Loan)2021-12-310001544206SolAero Technologies Corp. (A2 Term Loan)2022-01-012022-12-310001544206SolAero Technologies Corp. (A2 Term Loan)2022-12-310001544206Solaero Technology Corp. (Equity)2021-12-310001544206Solaero Technology Corp. (Equity)2022-01-012022-12-310001544206Solaero Technology Corp. (Equity)2022-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2021-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2022-01-012022-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2022-12-310001544206Direct Travel, Inc. 12021-12-310001544206Direct Travel, Inc. 12022-01-012022-12-310001544206Direct Travel, Inc. 12022-12-310001544206Direct Travel, Inc. 22021-12-310001544206Direct Travel, Inc. 22022-01-012022-12-310001544206Direct Travel, Inc. 22022-12-310001544206Direct Travel, Inc. (Equity)2021-12-310001544206Direct Travel, Inc. (Equity)2022-01-012022-12-310001544206Direct Travel, Inc. (Equity)2022-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2022-01-012022-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2022-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Delayed Draw 12022-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Delayed Draw 22022-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Delayed Draw 32022-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Revolver2022-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Delayed Draw2022-12-310001544206First and Second Lien Debt, Airnov, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Alpine Acquisition Corp II, Revolver2022-12-310001544206First and Second Lien Debt, American Physician Partners, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Analogic Corporation, Revolver2022-12-310001544206First and Second Lien Debt, Applied Technical Services, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Appriss Health, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Apptio, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Ascend Buyer, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Associations, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Atlas AU Bidco Pty Ltd (Austria), Revolver2022-12-310001544206First and Second Lien Debt, Avalara, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Blackbird Purchaser, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, BlueCat Networks Inc. (Canada), Delayed Draw 12022-12-310001544206First and Second Lien Debt, BlueCat Networks Inc. (Canada), Delayed Draw 22022-12-310001544206First and Second Lien Debt, BMS Holdings III Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, Bradyifs Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Bradyifs Holdings, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Bubbles Bidco S.P.A. (Italy), Delayed Draw2022-12-310001544206First and Second Lien Debt, Bubbles Bidco S.P.A. (Italy), Revolver2022-12-310001544206First and Second Lien Debt, Celerion Buyer, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Celerion Buyer, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Chartis Holding, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Chemical Computing Group ULC (Canada), Revolver2022-12-310001544206First and Second Lien Debt, Comar Holding Company, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Cority Software Inc. (Canada), Revolver2022-12-310001544206First and Second Lien Debt, CPI Intermediate Holdings, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, CST Holding Company, Revolver2022-12-310001544206First and Second Lien Debt, DCA Investment Holding LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Denali Midco 2, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Diligent Corporation, Revolver2022-12-310001544206First and Second Lien Debt, Direct Travel, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Eliassen Group, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Ellkay, LLC, Revolver2022-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Revolver2022-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, EvolveIP, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Excel Fitness Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Excelitas Technologies Corp., Revolver2022-12-310001544206First and Second Lien Debt, Excelitas Technologies Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, FPG Intermediate Holdco, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Greenhouse Software, Inc., Revolver 12022-12-310001544206First and Second Lien Debt, Greenhouse Software, Inc., Revolver 22022-12-310001544206First and Second Lien Debt, Hadrian Acquisition Limited (United Kingdom), Delayed Draw2022-12-310001544206First and Second Lien Debt, Harbour Benefit Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Hercules Borrower LLC, Revolver2022-12-310001544206First and Second Lien Debt, Hoosier Intermediate, LLC, Revolver2022-12-310001544206First and Second Lien Debt, HS Spa Holdings Inc., Revolver2022-12-310001544206First and Second Lien Debt, iCIMS, Inc., Revolver2022-12-310001544206First and Second Lien Debt, iCIMS, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, IQN Holding Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, IQN Holding Corp., Revolver2022-12-310001544206First and Second Lien Debt, Jeg's Automotive, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, K2 Insurance Services, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Kaseya, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Kaseya, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Lifelong Learner Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Liqui-Box Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Delayed Draw 12022-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Delayed Draw 22022-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Revolver2022-12-310001544206First and Second Lien Debt, NMI AcquisitionCo, Inc., Revolver2022-12-310001544206First and Second Lien Debt, North Haven Fairway Buyer, LLC, Revolver2022-12-310001544206First and Second Lien Debt, North Haven Stallone Buyer, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Oak Purchaser, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Oak Purchaser, Inc., Revolver2022-12-310001544206First and Second Lien Debt, PF Atlantic Holdco 2, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, PF Atlantic Holdco 2, LLC, Revolver2022-12-310001544206First and Second Lien Debt, PPT Management Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Prophix Software Inc. (Canada), Revolver2022-12-310001544206First and Second Lien Debt, PXO Holdings I Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, PXO Holdings I Corp., Revolver2022-12-310001544206First and Second Lien Debt, QNNECT, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Radwell Parent, LLC, Revolver2022-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Revolver2022-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Sapphire Convention, Inc., Revolver2022-12-310001544206First and Second Lien Debt, SCP Eye Care HoldCo, LLC, Revolver2022-12-310001544206First and Second Lien Debt, SCP Eye Care HoldCo, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Smarsh Inc., Revolver2022-12-310001544206First and Second Lien Debt, Smarsh Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Spotless Brands, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Tank Holding Corp., Revolver2022-12-310001544206First and Second Lien Debt, The Carlstar Group LLC, Revolver2022-12-310001544206First and Second Lien Debt, Trader Corporation (Canada), Revolver2022-12-310001544206First and Second Lien Debt, Trafigura Trading LLC, Revolver2022-12-310001544206First and Second Lien Debt, Tufin Software North America, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Tufin Software North America, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Revolver2022-12-310001544206First and Second Lien Debt, U.S. Legal Support, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, U.S. Legal Support, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, Revolver2022-12-310001544206us-gaap:MeasurementInputCreditSpreadMembersrt:MinimumMember2022-12-310001544206srt:MaximumMemberus-gaap:MeasurementInputCreditSpreadMember2022-12-310001544206csl:DebtSecuritiesFirstLienMember2022-12-310001544206csl:InvestmentsAtFairValueMembercsl:DebtSecuritiesFirstLienMembercsl:InvestmentTypeConcentrationRiskMember2022-01-012022-12-310001544206csl:InvestmentsAtFairValueMembercsl:InvestmentTypeConcentrationRiskMember2022-01-012022-12-310001544206us-gaap:DebtSecuritiesMembercsl:FloatingRateMember2022-12-310001544206us-gaap:DebtSecuritiesMembercsl:FixedRateMember2022-12-310001544206us-gaap:DebtSecuritiesMember2022-12-310001544206csl:InterestRateTypeConcentrationRiskMemberus-gaap:DebtSecuritiesMembercsl:InvestmentsAtFairValueMember2022-01-012022-12-310001544206us-gaap-supplement:AerospaceSectorMember2022-12-310001544206us-gaap-supplement:AutomotiveSectorMember2022-12-310001544206us-gaap-supplement:FoodAndBeverageSectorMember2022-12-310001544206csl:BusinessServicesMember2022-12-310001544206csl:CapitalEquipmentMember2022-12-310001544206csl:ChemicalsPlasticsAndRubberMember2022-12-310001544206us-gaap-supplement:ConstructionSectorMember2022-12-310001544206csl:ConsumerGoodsDurableMember2022-12-310001544206csl:ConsumerGoodsNonDurableMember2022-12-310001544206csl:ConsumerServicesMember2022-12-310001544206us-gaap-supplement:ContainerAndPackagingSectorMember2022-12-310001544206csl:DiversifiedFinancialServicesMember2022-12-310001544206csl:EnergySectorOilAndGasMember2022-12-310001544206csl:EnvironmentalIndustriesMember2022-12-310001544206us-gaap:HealthcareSectorMember2022-12-310001544206us-gaap:TechnologySectorMember2022-12-310001544206csl:InvestmentFundsMember2022-12-310001544206csl:LeisureProductsServicesSectorMember2022-12-310001544206csl:MediaAdvertisingPrintingAndPublishingMember2022-12-310001544206csl:MediaDiversifiedAndProductionMember2022-12-310001544206csl:MetalsAndMiningMember2022-12-310001544206us-gaap-supplement:RetailSectorMember2022-12-310001544206csl:SoftwareSectorMember2022-12-310001544206csl:SovereignAndPublicFinanceMember2022-12-310001544206csl:TelecommunicationsSectorMember2022-12-310001544206us-gaap-supplement:TransportationSectorMember2022-12-310001544206csl:UtilitiesSectorElectricMember2022-12-310001544206csl:WholesaleSectorMember2022-12-310001544206csl:IndustryConcentrationRiskMembercsl:InvestmentsAtFairValueMember2022-01-012022-12-310001544206country:AU2022-12-310001544206country:CA2022-12-310001544206country:CY2022-12-310001544206country:IT2022-12-310001544206country:LU2022-12-310001544206country:SE2022-12-310001544206country:GB2022-12-310001544206country:US2022-12-310001544206csl:InvestmentsAtFairValueMemberus-gaap:GeographicConcentrationRiskMember2022-01-012022-12-310001544206csl:InvestmentsAtFairValueMembercsl:DebtSecuritiesFirstLienMemberus-gaap-supplement:InvestmentUnaffiliatedIssuerMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206First Lien, Advanced Web Technologies Holding Company, Containers, Packaging & Glass2021-12-310001544206First Lien, Airnov, Inc., Containers, Packaging & Glass2021-12-310001544206First Lien, Allied Universal Holdco LLC, Business Services2021-12-310001544206First Lien, American Physician Partners, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, Analogic Corporation, Capital Equipment2021-12-310001544206First Lien, Applied Technical Services, LLC, Business Services2021-12-310001544206First Lien, Appriss Health, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, Apptio, Inc., Software2021-12-310001544206First Lien, Ascend Buyer, LLC, Containers, Packaging & Glass2021-12-310001544206First Lien, Associations, Inc., Construction & Building2021-12-310001544206First Lien, Aurora Lux FinCo S.Á.R.L. (Luxembourg), Software2021-12-310001544206First Lien, Avenu Holdings, LLC, Sovereign & Public Finance2021-12-310001544206First Lien, Barnes & Noble, Inc., Retail2021-12-310001544206First Lien, BlueCat Networks, Inc. (Canada), High Tech Industries2021-12-310001544206First Lien, BMS Holdings III Corp., Construction & Building2021-12-310001544206First Lien, Bubbles Bidco S.P.A. (Italy), Consumer Goods: Non-Durable2021-12-310001544206First Lien, Bubbles Bidco S.P.A. (Italy), Consumer Goods: Non-Durable 22021-12-310001544206First Lien, Captive Resources Midco, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, Chartis Holding, LLC, Business Services2021-12-310001544206First Lien, Chemical Computing Group ULC (Canada), Software2021-12-310001544206First Lien, Chudy Group, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, CircusTrix Holdings, LLC, Hotel, Gaming & Leisure2021-12-310001544206First Lien, CircusTrix Holdings, LLC, Hotel, Gaming & Leisure 22021-12-310001544206First Lien, Cobblestone Intermediate Holdco LLC, Consumer Services2021-12-310001544206First Lien, Comar Holding Company, LLC, Containers, Packaging & Glass2021-12-310001544206First Lien, Cority Software Inc. (Canada), Software2021-12-310001544206First Lien, Cority Software Inc. (Canada), Software 22021-12-310001544206First Lien, DCA Investment Holding, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, Derm Growth Partners III, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, DermaRite Industries, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, Designer Brands Inc., Retail2021-12-310001544206First Lien, Diligent Corporation, Telecommunications2021-12-310001544206First Lien, DTI Holdco, Inc., High Tech Industries2021-12-310001544206First Lien, Dwyer Instruments, Inc, Capital Equipment2021-12-310001544206First Lien, Ellkay, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, Emergency Communications Network, LLC, Telecommunications2021-12-310001544206First Lien, EPS Nass Parent, Inc., Utilities: Electric2021-12-310001544206First Lien, Ethos Veterinary Health LLC, Consumer Services2021-12-310001544206First Lien, EvolveIP, LLC, Telecommunications2021-12-310001544206First Lien, Frontline Technologies Holdings, LLC, Software2021-12-310001544206First Lien, Greenhouse Software, Inc., Software2021-12-310001544206First Lien, Harbour Benefit Holdings, Inc., Business Services2021-12-310001544206First Lien, Heartland Home Services, Inc, Consumer Services2021-12-310001544206First Lien, Hercules Borrower LLC, Environmental Industries2021-12-310001544206First Lien, Higginbotham Insurance Agency, Inc, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, Hoosier Intermediate, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, iCIMS, Inc., Software2021-12-310001544206First Lien, Individual FoodService Holdings, LLC, Wholesale2021-12-310001544206First Lien, Infront Luxembourg Finance S.À R.L. (Luxembourg), Hotel, Gaming & Leisure2021-12-310001544206First Lien, Integrity Marketing Acquisition, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, Integrity Marketing Acquisition, LLC, Banking, Finance, Insurance & Real Estate 22021-12-310001544206First Lien, Jeg's Automotive, LLC, Automotive2021-12-310001544206First Lien, K2 Insurance Services, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, Kaseya, Inc., High Tech Industries2021-12-310001544206First Lien, Lifelong Learner Holdings, LLC, Business Services2021-12-310001544206First Lien, LinQuest Corporation, Aerospace & Defense2021-12-310001544206First Lien, Liqui-Box Holdings, Inc., Containers, Packaging & Glass2021-12-310001544206First Lien, LVF Holdings, Inc., Beverage, Food & Tobacco2021-12-310001544206First Lien, Material Holdings, LLC, Business Services2021-12-310001544206First Lien, Maverick Acquisition, Inc., Aerospace & Defense2021-12-310001544206First Lien, Medical Manufacturing Technologies, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, MMIT Holdings, LLC, High Tech Industries2021-12-310001544206First Lien, National Technical Systems, Inc, Aerospace & Defense2021-12-310001544206First Lien, NES Global Talent Finance US, LLC (United Kingdom), Energy: Oil & Gas2021-12-310001544206First Lien, NMI AcquisitionCo, Inc., High Tech Industries2021-12-310001544206First Lien, Performance Health Holdings, Inc, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, PF Atlantic Holdco 2, LLC, Hotel, Gaming & Leisure2021-12-310001544206First Lien, PF Growth Partners, LLC, Hotel, Gaming & Leisure2021-12-310001544206First Lien, PPT Management Holdings, LLC, Healthcare & Pharmaceuticals2021-12-310001544206First Lien, Product Quest Manufacturing, LLC, Containers, Packaging & Glass2021-12-310001544206First Lien, Prophix Software Inc. (Canada), Software2021-12-310001544206First Lien, Quantic Electronics, LLC, Aerospace & Defense2021-12-310001544206First Lien, Quantic Electronics, LLC, Aerospace & Defense 22021-12-310001544206First Lien, QW Holding Corporation, Environmental Industries2021-12-310001544206First Lien, Redwood Services Group, LLC, High Tech Industries2021-12-310001544206First Lien, Regency Entertainment, Inc., Media: Diversified & Production2021-12-310001544206First Lien, Riveron Acquisition Holdings, Inc, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, RSC Acquisition, Inc., Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, Sapphire Convention, Inc., Telecommunications2021-12-310001544206First Lien, SPay, Inc., Hotel, Gaming & Leisure2021-12-310001544206First Lien, Speedstar Holding, LLC, Automotive2021-12-310001544206First Lien, Superior Health Linens, LLC, Business Services2021-12-310001544206First Lien, TCFI Aevex LLC, Aerospace & Defense2021-12-310001544206First Lien, The Leaders Romans Bidco Limited (United Kingdom) Term Loan B, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, The Leaders Romans Bidco Limited (United Kingdom) Term Loan C, Banking, Finance, Insurance & Real Estate2021-12-310001544206First Lien, Trafigura Trading LLC, Metals & Mining2021-12-310001544206First Lien, Turbo Buyer, Inc., Automotive2021-12-310001544206First Lien, Unifrutti Financing PLC (Cyprus), Beverage, Food & Tobacco2021-12-310001544206First Lien, Unifrutti Financing PLC (Cyprus), Beverage, Food & Tobacco 22021-12-310001544206First Lien, US INFRA SVCS Buyer, LLC, Environmental Industries2021-12-310001544206First Lien, USALCO, LLC, Chemicals, Plastics & Rubber2021-12-310001544206First Lien, USLS Acquisition, Inc., Business Services2021-12-310001544206First Lien, Westfall Technik, Inc., Chemicals, Plastics & Rubber2021-12-310001544206First Lien, Westfall Technik, Inc., Chemicals, Plastics & Rubber 22021-12-310001544206First Lien, Wineshipping.com LLC, Beverage, Food & Tobacco2021-12-310001544206First Lien, Yellowstone Buyer Acquisition, LLC, Consumer Goods: Durable2021-12-310001544206First Lien, YLG Holdings, Inc., Consumer Services2021-12-310001544206csl:DebtSecuritiesFirstLienMemberus-gaap-supplement:InvestmentUnaffiliatedIssuerMember2021-12-310001544206csl:InvestmentsAtFairValueMembercsl:DebtSecuritiesSecondLienMemberus-gaap-supplement:InvestmentUnaffiliatedIssuerMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Second Lien, 11852604 Canada Inc. (Canada), Healthcare & Pharmaceuticals2021-12-310001544206Second Lien, AI Convoy S.A.R.L (United Kingdom), Aerospace & Defense2021-12-310001544206Second Lien, Aimbridge Acquisition Co., Inc., Hotel, Gaming & Leisure2021-12-310001544206Second Lien, AP Plastics Acquisition Holdings, LLC, Chemicals, Plastics & Rubber2021-12-310001544206Second Lien, AQA Acquisition Holdings, Inc., High Tech Industries2021-12-310001544206Second Lien, Blackbird Purchaser, Inc., Capital Equipment2021-12-310001544206Second Lien, Brave Parent Holdings, Inc., Software2021-12-310001544206Second Lien, Drilling Info Holdings, Inc., Energy: Oil & Gas2021-12-310001544206Second Lien, Jazz Acquisition, Inc., Aerospace & Defense2021-12-310001544206Second Lien, Outcomes Group Holdings, Inc., Business Services2021-12-310001544206Second Lien, PAI Holdco, Inc., Automotive2021-12-310001544206Second Lien, Peraton Corp., Aerospace & Defense2021-12-310001544206Second Lien, Quartz Holding Company, Software2021-12-310001544206Second Lien, Stonegate Pub Company Bidco Limited (United Kingdom), Beverage, Food & Tobacco2021-12-310001544206Second Lien, Tank Holding Corp., Capital Equipment2021-12-310001544206Second Lien, TruGreen Limited Partnership, Consumer Service2021-12-310001544206Second Lien, Watchfire Enterprises, Inc., Media: Advertising, Printing & Publishing2021-12-310001544206Second Lien, World 50, Inc., Business Services2021-12-310001544206Second Lien, WP CPP Holdings, LLC, Aerospace & Defense2021-12-310001544206csl:DebtSecuritiesSecondLienMemberus-gaap-supplement:InvestmentUnaffiliatedIssuerMember2021-12-310001544206us-gaap:EquitySecuritiesMembercsl:InvestmentsAtFairValueMemberus-gaap-supplement:InvestmentUnaffiliatedIssuerMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Equity Investments, ANLG Holdings, LLC, Capital Equipment2021-12-310001544206Equity Investments, Appriss Health, LLC, Healthcare & Pharmaceuticals2021-12-310001544206Equity Investments, Atlas Ontario LP (Canada), Business Services2021-12-310001544206Equity Investments, Avenu Holdings, LLC, Sovereign & Public Finance2021-12-310001544206Equity Investments, Blackbird Holdco, Inc, Capital Equipment2021-12-310001544206Equity Investments, Buckeye Parent, LLC, Automotive2021-12-310001544206Equity Investments, Chartis Holding, LLC, Business Services2021-12-310001544206Equity Investments, CIP Revolution Holdings, LLC, Media: Advertising, Printing & Publishing2021-12-310001544206Equity Investments, Cority Software Inc. (Canada), Software2021-12-310001544206Equity Investments, Derm Growth Partners III, LLC, Healthcare & Pharmaceuticals2021-12-310001544206Equity Investments, Diligent Corporation, Telecommunications2021-12-310001544206Equity Investments, ECP Parent, LLC, Healthcare & Pharmaceuticals2021-12-310001544206Equity Investments, GB Vino Parent, L.P., Beverage, Food & Tobacco2021-12-310001544206Equity Investments, Integrity Marketing Group, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206Equity Investments, K2 Insurance Services, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206Equity Investments, Legacy.com, Inc., High Tech Industries2021-12-310001544206Equity Investments, Mailgun Technologies, Inc., High Tech Industries2021-12-310001544206Equity Investments, North Haven Goldfinch Topco, LLC, Containers, Packaging & Glass2021-12-310001544206Equity Investments, Pascal Ultimate Holdings, L.P, Capital Equipment2021-12-310001544206Equity Investments, Tailwind HMT Holdings Corp., Energy: Oil & Gas2021-12-310001544206Equity Investments, Tank Holding Corp., Capital Equipment2021-12-310001544206Equity Investments, Titan DI Preferred Holdings, Inc., Energy: Oil & Gas2021-12-310001544206Equity Investments, Turbo Buyer, Inc., Automotive2021-12-310001544206Equity Investments, Unifrutti Financing PLC (Cyprus), Beverage, Food & Tobacco2021-12-310001544206Equity Investments, Unifrutti Financing PLC (Cyprus), Beverage, Food & Tobacco 22021-12-310001544206Equity Investments, USLS Acquisition, Inc., Business Services2021-12-310001544206Equity Investments, W50 Parent LLC, Business Services2021-12-310001544206Equity Investments, Zenith American Holding, Inc., Business Services2021-12-310001544206us-gaap:EquitySecuritiesMemberus-gaap-supplement:InvestmentUnaffiliatedIssuerMember2021-12-310001544206us-gaap-supplement:InvestmentUnaffiliatedIssuerMember2021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMembercsl:InvestmentsAtFairValueMembercsl:DebtSecuritiesFirstLienMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206First Lien, Direct Travel, Inc., Hotel, Gaming & Leisure2021-12-310001544206First Lien, Direct Travel, Inc., Hotel, Gaming & Leisure 22021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DebtSecuritiesFirstLienMember2021-12-310001544206us-gaap:EquitySecuritiesMemberus-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMembercsl:InvestmentsAtFairValueMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Equity Investments, Direct Travel, Inc., Hotel, Gaming & Leisure 22021-12-310001544206us-gaap:EquitySecuritiesMemberus-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMember2021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMember2021-12-310001544206csl:InvestmentsAtFairValueMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMembercsl:DebtSecuritiesFirstLienMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206First Lien, SolAero Technologies Corp. (A1 Term Loan), Hotel, Gaming & Leisure2021-12-310001544206First Lien, SolAero Technologies Corp. (A2 Term Loan), Telecommunications2021-12-310001544206First Lien, SolAero Technologies Corp. (Priority Facilities), Telecommunications2021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerControlledMembercsl:DebtSecuritiesFirstLienMember2021-12-310001544206us-gaap:EquitySecuritiesMembercsl:InvestmentsAtFairValueMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Equity Investments, SolAero Technologies Corp., Telecommunications2021-12-310001544206us-gaap:EquitySecuritiesMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2021-12-310001544206us-gaap:OtherThanSecuritiesInvestmentMembercsl:InvestmentsAtFairValueMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Investment Funds, Middle Market Credit Fund II, LLC, Member's Interest, Telecommunications2021-12-310001544206Investment Funds, Middle Market Credit Fund, LLC, Subordinated Loan and Member's Interest, Investment Funds2021-12-310001544206Investment Funds, Middle Market Credit Fund, Mezzanine Loan, Investment Funds2021-12-310001544206us-gaap:OtherThanSecuritiesInvestmentMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2021-12-310001544206csl:A30DayLIBORMember2021-12-310001544206csl:A90DayLIBORMember2021-12-310001544206csl:A180DayLIBORMember2021-12-310001544206us-gaap:EquitySecuritiesMember2021-12-310001544206Middle Market Credit Fund, LLC, Mezzanine Loan2020-12-310001544206Middle Market Credit Fund, LLC, Mezzanine Loan2021-01-012021-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member’s Interest 2020-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member’s Interest 2021-01-012021-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member’s Interest 2021-12-310001544206Middle Market Credit Fund II LLC, Member's Interest2020-12-310001544206Middle Market Credit Fund II LLC, Member's Interest2021-01-012021-12-310001544206Middle Market Credit Fund II LLC, Member's Interest2021-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerControlledMembercsl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMember2020-12-310001544206us-gaap-supplement:InvestmentAffiliatedIssuerControlledMembercsl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMember2021-01-012021-12-310001544206SolAero Technologies Corp. (Priority Term Loan)2020-12-310001544206SolAero Technologies Corp. (Priority Term Loan)2021-01-012021-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2020-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2021-01-012021-12-310001544206SolAero Technologies Corp. (A2 Term Loan) 2020-12-310001544206SolAero Technologies Corp. (A2 Term Loan) 2021-01-012021-12-310001544206SolAero Technologies Corp. (A2 Term Loan) 2021-12-310001544206Solaero Technology Corp. (Equity)2020-12-310001544206Solaero Technology Corp. (Equity)2021-01-012021-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2020-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerControlledMember2021-01-012021-12-310001544206Direct Travel, Inc.2020-12-310001544206Direct Travel, Inc.2021-01-012021-12-310001544206Direct Travel, Inc.2021-12-310001544206Direct Travel, Inc. (2)2020-12-310001544206Direct Travel, Inc. (2)2021-01-012021-12-310001544206Direct Travel, Inc. (2)2021-12-310001544206Direct Travel, Inc. (Equity)2020-12-310001544206Direct Travel, Inc. (Equity)2021-01-012021-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMember2020-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMember2021-01-012021-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap-supplement:InvestmentAffiliatedIssuerNoncontrolledMember2021-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Delayed Draw2021-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Delayed Draw 22021-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Revolver2021-12-310001544206First and Second Lien Debt, Airnov, Inc., Revolver2021-12-310001544206First and Second Lien Debt, American Physician Partners, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Analogic Corporation, Revolver2021-12-310001544206First and Second Lien Debt, Applied Technical Services, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Appriss Health, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Apptio, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Ascend Buyer, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Associations, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Blackbird Purchaser, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, BMS Holdings III Corp., Delayed Draw2021-12-310001544206First and Second Lien Debt, Bubbles Bidco S.P.A. (Italy), Delayed Draw2021-12-310001544206First and Second Lien Debt, Bubbles Bidco S.P.A. (Italy), Revolver2021-12-310001544206First and Second Lien Debt, Captive Resources Midco, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Chartis Holding, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Chemical Computing Group ULC (Canada), Revolver2021-12-310001544206First and Second Lien Debt, Chudy Group, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Chudy Group, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Comar Holding Company, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Cority Software Inc. (Canada), Revolver2021-12-310001544206First and Second Lien Debt, DCA Investment Holding LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, DermaRite Industries, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Diligent Corporation, Delayed Draw2021-12-310001544206First and Second Lien Debt, Diligent Corporation, Revolver2021-12-310001544206First and Second Lien Debt, Direct Travel, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc, Delayed Draw2021-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc, Revolver2021-12-310001544206First and Second Lien Debt, Ellkay, LLC, Revolver2021-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Revolver2021-12-310001544206First and Second Lien Debt, EvolveIP, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Greenhouse Software, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Harbour Benefit Holdings, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc, Delayed Draw2021-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc, Revolver2021-12-310001544206First and Second Lien Debt, Hercules Borrower LLC, Revolver2021-12-310001544206First and Second Lien Debt, Hoosier Intermediate, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Individual FoodService Holdings, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Individual FoodService Holdings, LLC, Delayed Draw 22021-12-310001544206First and Second Lien Debt, Individual FoodService Holdings, LLC, Delayed Draw 32021-12-310001544206First and Second Lien Debt, Individual FoodService Holdings, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Integrity Marketing Acquisition, LLC, Delayed Draw IQN Holding Corp., Delayed Draw IQN Holding Corp., Revolver2021-12-310001544206First and Second Lien Debt, Jeg's Automotive, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Jeg's Automotive, LLC, Revolver2021-12-310001544206First and Second Lien Debt, K2 Insurance Services, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Kaseya, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, Kaseya, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Lifelong Learner Holdings, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Liqui-Box Holdings, Inc., Revolver2021-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Maverick Acquisition, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, Maverick Acquisition, Inc., Delayed Draw 22021-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Revolver2021-12-310001544206First and Second Lien Debt, MMIT Holdings, LLC, Revolver2021-12-310001544206First and Second Lien Debt, National Technical Systems, Inc., Revolver2021-12-310001544206First and Second Lien Debt, NMI AcquisitionCo, Inc., Revolver2021-12-310001544206First and Second Lien Debt, PF Atlantic HoldCo 2, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, PF Atlantic HoldCo 2, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Prophix Software Inc. (Canada), Revolver2021-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Revolver2021-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Revolver 22021-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Delayed Draw2021-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Sapphire Convention, Inc., Revolver2021-12-310001544206First and Second Lien Debt, SolAero Technologies Corp. (Priority Facilities), Revolver2021-12-310001544206First and Second Lien Debt, SolAero Technologies Corp. (Priority Facilities), Revolver 22021-12-310001544206First and Second Lien Debt, Speedstar Holding, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Superior Health Linens, LLC, Revolver2021-12-310001544206First and Second Lien Debt, TCFI Aevex LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, TCFI Aevex LLC, Delayed Draw 22021-12-310001544206First and Second Lien Debt, The Leaders Romans Bidco Limited (United Kingdom), Delayed Draw2021-12-310001544206First and Second Lien Debt, Trafigura Trading LLC, Revolver2021-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Revolver2021-12-310001544206First and Second Lien Debt, US INFRA SVCS Buyer, LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, US INFRA SVCS Buyer, LLC, Revolver2021-12-310001544206First and Second Lien Debt, USLS Acquisition, Inc., Revolver2021-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, Delayed Draw2021-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, 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Glass2021-12-310001544206Credit Fund, First Lien Debt, API Technologies Corp., Aerospace & Defense2021-12-310001544206Credit Fund, First Lien Debt, Aptean, Inc., Software2021-12-310001544206Credit Fund, First Lien Debt, Avalign Technologies, Inc., Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund, First Lien Debt, Avenu Holdings, LLC, Sovereign & Public Finance2021-12-310001544206Credit Fund, First Lien Debt, BMS Holdings III Corp., Construction & Building2021-12-310001544206Credit Fund, First Lien Debt, Chartis Holding, LLC, Business Services2021-12-310001544206Credit Fund, First Lien Debt, Chemical Computing Group ULC (Canada), Software2021-12-310001544206Credit Fund, First Lien Debt, Chudy Group, LLC, Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund, First Lien Debt, Diligent Corporation, Telecommunications2021-12-310001544206Credit Fund, First Lien Debt, Divisions Holding Corporation, Business Services2021-12-310001544206Credit Fund, First Lien Debt, DTI Holdco, Inc., High Tech Industries2021-12-310001544206Credit Fund, First Lien Debt, Eliassen Group, LLC, Business Services2021-12-310001544206Credit Fund, First Lien Debt, EPS Nass Parent, Inc., Utilities: Electric2021-12-310001544206Credit Fund, First Lien Debt, EvolveIP, LLC, Telecommunications2021-12-310001544206Credit Fund, First Lien Debt, Exactech, Inc., Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund, First Lien Debt, Excel Fitness Holdings, Inc., Hotel, Gaming & Leisure2021-12-310001544206Credit Fund, First Lien Debt, Frontline Technologies Holdings, LLC, Software2021-12-310001544206Credit Fund, First Lien Debt, GSM Acquisition Corp., Hotel, Gaming & Leisure2021-12-310001544206Credit Fund, First Lien Debt, Heartland Home Services, Inc, Consumer Services2021-12-310001544206Credit Fund, First Lien Debt, HMT Holding Inc., Energy: Oil & Gas2021-12-310001544206Credit Fund, First Lien Debt, Integrity Marketing Acquisition, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206Credit Fund, First Lien Debt, Jensen Hughes, Inc., Utilities: Electric2021-12-310001544206Credit Fund, First Lien Debt, K2 Insurance Services, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206Credit Fund, First Lien Debt, KAMC Holdings, Inc., Energy: Electricity2021-12-310001544206Credit Fund, First Lien Debt, KBP Investments, LLC, Beverage, Food & Tobacco2021-12-310001544206Credit Fund, First Lien Debt, Odyssey Logistics & Technology Corp., Transportation: Cargo2021-12-310001544206Credit Fund, First Lien Debt, Output Services Group, Media: Advertising, Printing & Publishing2021-12-310001544206Credit Fund, First Lien Debt, Premise Health Holding Corp., Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund, First Lien Debt, Q Holding Company, Automotive2021-12-310001544206Credit Fund, First Lien Debt, QW Holding Corporation, Environmental Industries2021-12-310001544206Credit Fund, First Lien Debt, Radiology Partners, Inc., Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund, First Lien Debt, RevSpring Inc., Media: Advertising, Printing & Publishing2021-12-310001544206Credit Fund, First Lien Debt, Striper Buyer, LLC, Containers, Packaging & Glass2021-12-310001544206Credit Fund, First Lien Debt, Turbo Buyer, Inc., Automotive2021-12-310001544206Credit Fund, First Lien Debt, U.S. TelePacific Holdings Corp., Telecommunications2021-12-310001544206Credit Fund, First Lien Debt, USALCO, LLC, Chemicals, Plastics & Rubber2021-12-310001544206Credit Fund, First Lien Debt, VRC Companies, LLC, Business Services2021-12-310001544206Credit Fund, First Lien Debt, Welocalize, Inc., Business Services2021-12-310001544206Credit Fund, First Lien Debt, WRE Holding Corp., Environmental Industries2021-12-310001544206Credit Fund, First Lien Debt, Yellowstone Buyer Acquisition, LLC, Consumer Goods: Durable2021-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:DebtSecuritiesFirstLienMember2021-12-310001544206us-gaap:EquitySecuritiesMembercsl:MiddleMarketCreditFundLLCMembercsl:InvestmentsAtFairValueMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Credit Fund, Equity Investments, DBI Holding, LLC, Transportation: Cargo 12021-12-310001544206Credit Fund, Equity Investments, DBI Holding, LLC, Transportation: Cargo 22021-12-310001544206us-gaap:EquitySecuritiesMembercsl:MiddleMarketCreditFundLLCMember2021-12-310001544206country:CAcsl:MiddleMarketCreditFundLLCMembercsl:InvestmentsAtFairValueMemberus-gaap:GeographicConcentrationRiskMember2021-01-012021-12-310001544206csl:MiddleMarketCreditFundLLCMembercountry:UScsl:InvestmentsAtFairValueMemberus-gaap:GeographicConcentrationRiskMember2021-01-012021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, ACR Group Borrower, LLC, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Analogic Corporation, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Chartis Holding, LLC, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Chemical Computing Group ULC (Canada), Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Chudy Group, LLC, Delayed Draw2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Chudy Group, LLC, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Diligent Corporation, Delayed Draw2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Diligent Corporation, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, EPS Nass Parent, Inc., Delayed Draw2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, EPS Nass Parent, Inc., Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, EvolveIP, LLC, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, GSM Acquisition Corp., Delayed Draw2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Heartland Home Services, Inc, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, HMT Holding Inc., Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Integrity Marketing Acquisition, LLC, Delayed Draw 12021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Integrity Marketing Acquisition, LLC, Delayed Draw 22021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Jensen Hughes, Inc., Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, K2 Insurance Services, LLC, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, KBP Investments, LLC, Delayed Draw 12021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, KBP Investments, LLC, Delayed Draw 22021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, QW Holding Corporation, Delayed Draw2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, QW Holding Corporation, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Turbo Buyer, Inc., Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, VRC Companies, LLC, Delayed Draw2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, VRC Companies, LLC, Revolver2021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Welocalize, Inc., Revolver 12021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, Welocalize, Inc., Revolver 22021-12-310001544206Credit Fund, Unfunded Commitment, First Lien Debt, WRE Holding Corp., Revolver2021-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMember2020-12-310001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2020-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMember2020-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMember2021-01-012021-12-310001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2021-01-012021-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMember2021-01-012021-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMember2021-12-310001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2021-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMember2021-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMember2022-01-012022-12-310001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2022-01-012022-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMember2022-01-012022-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMember2022-12-310001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2022-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMember2022-12-310001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMember2022-05-190001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundFacilityMemberus-gaap:LineOfCreditMemberus-gaap:LondonInterbankOfferedRateLIBORMember2022-05-192022-05-190001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2022-05-030001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMembercsl:SecuredOvernightFinancingRateSOFRMemberus-gaap:LineOfCreditMember2022-05-192022-05-190001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMembersrt:MinimumMember2022-05-032022-05-030001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMembersrt:MaximumMember2022-05-032022-05-030001544206csl:CreditFundSubFacilityMembercsl:MiddleMarketCreditFundLLCMember2019-08-160001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMemberus-gaap:LineOfCreditMemberus-gaap:LondonInterbankOfferedRateLIBORMember2019-08-172020-08-160001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMemberus-gaap:LineOfCreditMemberus-gaap:LondonInterbankOfferedRateLIBORMember2020-08-172021-08-160001544206csl:MiddleMarketCreditFundLLCMembercsl:CreditFundWarehouseIIFacilityMemberus-gaap:LineOfCreditMemberus-gaap:LondonInterbankOfferedRateLIBORMember2021-08-172022-06-280001544206csl:MiddleMarketCreditFundLLCMembercsl:A20192NotesClassA1NotesMemberus-gaap:SecuredDebtMember2019-05-210001544206csl:MiddleMarketCreditFundLLCMembercsl:A20192NotesClassA1NotesMemberus-gaap:LondonInterbankOfferedRateLIBORMemberus-gaap:SecuredDebtMember2019-05-212019-05-210001544206csl:A20192NotesClassA2NotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:SecuredDebtMember2019-05-210001544206csl:A20192NotesClassA2NotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:LondonInterbankOfferedRateLIBORMemberus-gaap:SecuredDebtMember2019-05-212019-05-210001544206csl:A20192NotesClassBNotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:SecuredDebtMember2019-05-210001544206csl:A20192NotesClassBNotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:LondonInterbankOfferedRateLIBORMemberus-gaap:SecuredDebtMember2019-05-212019-05-210001544206csl:A20192NotesClassCNotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:SecuredDebtMember2019-05-210001544206csl:A20192NotesClassCNotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:LondonInterbankOfferedRateLIBORMemberus-gaap:SecuredDebtMember2019-05-212019-05-210001544206csl:A20192NotesClassDNotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:SecuredDebtMember2019-05-210001544206csl:A20192NotesClassDNotesMembercsl:MiddleMarketCreditFundLLCMemberus-gaap:LondonInterbankOfferedRateLIBORMemberus-gaap:SecuredDebtMember2019-05-212019-05-210001544206csl:A20192IssuerPreferredInterestsMember2019-05-210001544206csl:CreditFundIISeniorNotesMemberus-gaap:SeniorNotesMember2022-06-300001544206csl:CreditFundIISeniorNotesClassA1NotesMemberus-gaap:SeniorNotesMember2022-06-300001544206csl:CreditFundIISeniorNotesClassA1NotesMembercsl:SecuredOvernightFinancingRateSOFRMemberus-gaap:SeniorNotesMember2022-06-302022-06-300001544206csl:CreditFundIISeniorNotesClassA1NotesMemberus-gaap:SeniorNotesMemberus-gaap:LondonInterbankOfferedRateLIBORMember2021-12-292021-12-290001544206csl:CreditFundIISeniorNotesClassA2NotesMemberus-gaap:SeniorNotesMember2022-06-300001544206csl:CreditFundIISeniorNotesClassA2NotesMembercsl:SecuredOvernightFinancingRateSOFRMemberus-gaap:SeniorNotesMember2022-06-302022-06-300001544206csl:CreditFundIISeniorNotesClassA2NotesMemberus-gaap:SeniorNotesMemberus-gaap:LondonInterbankOfferedRateLIBORMembe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Fund II - First Lien Debt, Airnov, Inc., Containers, Packaging & Glass2022-12-310001544206Credit Fund II - First Lien Debt, Alpine Acquisition Corp II, Transportation: Cargo2022-12-310001544206Credit Fund II - First Lien Debt, American Physician Partners, LLC, Healthcare & Pharmaceuticals2022-12-310001544206Credit Fund II - First Lien Debt, Appriss Health, LLC, Healthcare & Pharmaceuticals2022-12-310001544206Credit Fund II - First Lien Debt, Apptio, Inc., Software2022-12-310001544206Credit Fund II - First Lien Debt, Ascend Buyer, LLC, Containers, Packaging & Glass2022-12-310001544206Credit Fund II - First Lien Debt, Aurora Lux FinCo S.Á.R.L. (Luxembourg), Software2022-12-310001544206Credit Fund II - First Lien Debt, BMS Holdings III Corp., Construction & Building2022-12-310001544206Credit Fund II - First Lien Debt, Chartis Holding, LLC, Business Services2022-12-310001544206Credit Fund II - First Lien Debt, Comar Holding Company, LLC, Containers, Packaging & Glass2022-12-310001544206Credit Fund II - First Lien Debt, Cority Software Inc. (Canada), Software2022-12-310001544206Credit Fund II - First Lien Debt, Dwyer Instruments, Inc., Capital Equipment2022-12-310001544206Credit Fund II - First Lien Debt, EvolveIP, LLC, Telecommunications2022-12-310001544206Credit Fund II - First Lien Debt, Harbour Benefit Holdings, Inc., Business Services2022-12-310001544206Credit Fund II - First Lien Debt, Hoosier Intermediate, LLC, Healthcare & Pharmaceuticals2022-12-310001544206Credit Fund II - First Lien Debt, Integrity Marketing Acquisition, LLC, Diversified Financial Services 12022-12-310001544206Credit Fund II - First Lien Debt, Integrity Marketing Acquisition, LLC, Diversified Financial Services 22022-12-310001544206Credit Fund II - First Lien Debt, K2 Insurance Services, LLC, Diversified Financial Services2022-12-310001544206Credit Fund II - First Lien Debt, Material Holdings, LLC, Business Services2022-12-310001544206Credit Fund II - First Lien Debt, Maverick Acquisition, Inc., Aerospace & Defense2022-12-310001544206Credit Fund II - First Lien Debt, NMI AcquisitionCo, Inc., High Tech Industries2022-12-310001544206Credit Fund II - First Lien Debt, PF Atlantic Holdco 2, LLC, Leisure Products & Services2022-12-310001544206Credit Fund II - First Lien Debt, QW Holding Corporation, Environmental Industries2022-12-310001544206Credit Fund II - First Lien Debt, Riveron Acquisition Holdings, Inc., Diversified Financial Services2022-12-310001544206Credit Fund II - First Lien Debt, RSC Acquisition, Inc., Diversified Financial Services2022-12-310001544206Credit Fund II - First Lien Debt, TCFI Aevex LLC, Aerospace & Defense2022-12-310001544206Credit Fund II - First Lien Debt, Turbo Buyer, Inc., Automotive2022-12-310001544206Credit Fund II - First Lien Debt, U.S. Legal Support, Inc., Business Services2022-12-310001544206Credit Fund II - First Lien Debt, US INFRA SVCS Buyer, LLC, Environmental Industries2022-12-310001544206Credit Fund II - First Lien Debt, Westfall Technik, Inc., Chemicals, Plastics & Rubber2022-12-310001544206Credit Fund II - First Lien Debt, Wineshipping.com LLC., Beverage & Food2022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercsl:DebtSecuritiesFirstLienMember2022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercsl:SecondLienDebtMembercsl:InvestmentsAtFairValueMembercsl:InvestmentTypeConcentrationRiskMember2022-01-012022-12-310001544206Credit Fund II - Second Lien Debt, AI Convoy S.A.R.L (United Kingdom), Aerospace & Defense2022-12-310001544206Credit Fund II - Second Lien Debt, AP Plastics Acquisition Holdings, LLC, Chemicals, Plastics & Rubber2022-12-310001544206Credit Fund II - Second Lien Debt, AQA Acquisition Holdings, Inc., High Tech Industries2022-12-310001544206Credit Fund II - Second Lien Debt, Quartz Holding Company, Software2022-12-310001544206Credit Fund II - Second Lien Debt, World 50, Inc., Business Services2022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercsl:SecondLienDebtMember2022-12-310001544206country:CAcsl:MiddleMarketCreditFundIILLCMembercsl:InvestmentsAtFairValueMemberus-gaap:GeographicConcentrationRiskMember2022-01-012022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercsl:InvestmentsAtFairValueMembercountry:LUus-gaap:GeographicConcentrationRiskMember2022-01-012022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercsl:InvestmentsAtFairValueMemberus-gaap:GeographicConcentrationRiskMembercountry:GB2022-01-012022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercountry:UScsl:InvestmentsAtFairValueMemberus-gaap:GeographicConcentrationRiskMember2022-01-012022-12-310001544206csl:MiddleMarketCreditFundIILLCMembercsl:InvestmentsAtFairValueMembercsl:DebtSecuritiesFirstLienMembercsl:InvestmentTypeConcentrationRiskMember2021-01-012021-12-310001544206Credit Fund II, First Lien Debt, Airnov, Inc., Containers, Packaging & Glass2021-12-310001544206Credit Fund II, First Lien Debt, American Physician Partners, LLC, Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund II, First Lien Debt, Appriss Health, LLC, Healthcare & Pharmaceuticals2021-12-310001544206Credit Fund II, First Lien Debt, Apptio, Inc., Software2021-12-310001544206Credit Fund II, First Lien Debt, Aurora Lux FinCo S.Á.R.L. (Luxembourg), Software2021-12-310001544206Credit Fund II, First Lien Debt, Avenu Holdings, LLC, Sovereign & Public Finance2021-12-310001544206Credit Fund II, First Lien Debt, BMS Holdings III Corp., Construction & Building2021-12-310001544206Credit Fund II, First Lien Debt, Captive Resources Midco, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206Credit Fund II, First Lien Debt, Chartis Holding, LLC, Business Services2021-12-310001544206Credit Fund II, First Lien Debt, Comar Holding Company, LLC, Containers, Packaging & Glass2021-12-310001544206Credit Fund II, First Lien Debt, Cority Software Inc. (Canada), Software2021-12-310001544206Credit Fund II, First Lien Debt, Dwyer Instruments, Inc, Capital Equipment2021-12-310001544206Credit Fund II, First Lien Debt, Ethos Veterinary Health LLC, Consumer Services2021-12-310001544206Credit Fund II, First Lien Debt, EvolveIP, LLC, Telecommunications2021-12-310001544206Credit Fund II, First Lien Debt, Harbour Benefit Holdings, Inc., Business Services2021-12-310001544206Credit Fund II, First Lien Debt, K2 Insurance Services, LLC, Banking, Finance, Insurance & Real Estate2021-12-310001544206Credit Fund II, First Lien Debt, Kaseya, Inc., High Tech Industries2021-12-310001544206Credit Fund II, First Lien Debt, Material Holdings, LLC, Business Services2021-12-310001544206Credit Fund II, First Lien Debt, Maverick Acquisition, Inc., Aerospace & Defense2021-12-310001544206Credit Fund II, First Lien Debt, National Technical Systems, Inc., Aerospace & Defense2021-12-310001544206Credit Fund II, First Lien Debt, NMI AcquisitionCo, Inc., High Tech 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