XML 84 R76.htm IDEA: XBRL DOCUMENT
v3.23.4

Fair Value Measurements - Unobservable Inputs (Details) $ in Thousands | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
--- | --- | --- | ---
Fair Value Measurements |  |  |
Fair Value | $ 3,123,450 | $ 2,873,588 | $ 2,387,374
Level 3 |  |  |
Fair Value Measurements |  |  |
Fair Value | 3,040,160 | 2,828,035 | 2,356,559
Level 3 | Transaction Price | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Fair Value |  | $ 44,000 |
Level 3 | Transaction Price | Low | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input |  | 100 |
Level 3 | Transaction Price | High | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input |  | 100 |
Level 3 | Transaction Price | Weighted Average | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input |  | 100 |
Level 3 | First Lien Debt |  |  |
Fair Value Measurements |  |  |
Fair Value | 2,907,989 | $ 2,668,749 | 2,207,036
Level 3 | First Lien Debt | Yield Analysis | Discount Rate |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 2,641,353 | $ 2,624,749 | $ 2,207,036
Level 3 | First Lien Debt | Yield Analysis | Low | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0933 | 0.0920 | 0.0555
Level 3 | First Lien Debt | Yield Analysis | High | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1918 | 0.2044 | 0.1244
Level 3 | First Lien Debt | Yield Analysis | Weighted Average | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1177 | 0.1127 | 0.0752
Level 3 | First Lien Debt | Transaction Price | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 266,636 | $ 44,000 |
Level 3 | First Lien Debt | Transaction Price | Low | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.9650 | 1.0000 |
Level 3 | First Lien Debt | Transaction Price | High | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input | 1.0000 | 1.0000 |
Level 3 | First Lien Debt | Transaction Price | Weighted Average | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.9856 | 1.0000 |
Level 3 | Second Lien Debt |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 92,008 | $ 122,891 | $ 121,550
Level 3 | Second Lien Debt | Yield Analysis | Discount Rate |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 87,508 | $ 122,891 | $ 121,550
Level 3 | Second Lien Debt | Yield Analysis | Low | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1147 | 0.1214 | 0.0712
Level 3 | Second Lien Debt | Yield Analysis | High | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.2742 | 0.1720 | 0.1079
Level 3 | Second Lien Debt | Yield Analysis | Weighted Average | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1489 | 0.1424 | 0.0851
Level 3 | Second Lien Debt | Transaction Price | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 4,500 |  |
Level 3 | Second Lien Debt | Transaction Price | Low | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input | 1.0000 |  |
Level 3 | Second Lien Debt | Transaction Price | High | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input | 1.0000 |  |
Level 3 | Second Lien Debt | Transaction Price | Weighted Average | Recent Transaction |  |  |
Fair Value Measurements |  |  |
Measurement input | 1.0000 |  |
Level 3 | Unsecured debt | Yield Analysis | Discount Rate |  |  |
Fair Value Measurements |  |  |
Fair Value |  |  | $ 1,350
Level 3 | Unsecured debt | Yield Analysis | Low | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input |  |  | 0.2533
Level 3 | Unsecured debt | Yield Analysis | High | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input |  |  | 0.2533
Level 3 | Unsecured debt | Yield Analysis | Weighted Average | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input |  |  | 0.2533
Level 3 | Unsecured debt | Income Approach | Discount Rate |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 1,877 | $ 1,826 |
Level 3 | Unsecured debt | Income Approach | Low | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1450 | 0.1660 |
Level 3 | Unsecured debt | Income Approach | High | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1450 | 0.1660 |
Level 3 | Unsecured debt | Income Approach | Weighted Average | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1450 | 0.1660 |
Level 3 | Unsecured debt | Market Approach | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 125 | $ 372 |
Level 3 | Unsecured debt | Market Approach | Low | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0900 | 0.0900 | 0.0900
Level 3 | Unsecured debt | Market Approach | High | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0900 | 0.0900 | 0.0900
Level 3 | Unsecured debt | Market Approach | Weighted Average | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0900 | 0.0900 | 0.0900
Level 3 | Preferred equity | Yield Analysis | Discount Rate |  |  |
Fair Value Measurements |  |  |
Fair Value |  |  | $ 9,950
Level 3 | Preferred equity | Yield Analysis | Low | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input |  |  | 0.1170
Level 3 | Preferred equity | Yield Analysis | High | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input |  |  | 0.1210
Level 3 | Preferred equity | Yield Analysis | Weighted Average | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input |  |  | 0.1192
Level 3 | Preferred equity | Income Approach | Discount Rate |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 18,181 | $ 16,076 |
Level 3 | Preferred equity | Income Approach | Low | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1219 | 0.1220 |
Level 3 | Preferred equity | Income Approach | High | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1548 | 0.1569 |
Level 3 | Preferred equity | Income Approach | Weighted Average | Discount Rate |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1345 | 0.1362 |
Level 3 | Preferred equity | Market Approach | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 1,275 | $ 963 | $ 1,298
Level 3 | Preferred equity | Market Approach | Low | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0750 | 0.0878 | 0.1180
Level 3 | Preferred equity | Market Approach | High | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0750 | 0.0878 | 0.1180
Level 3 | Preferred equity | Market Approach | Weighted Average | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0750 | 0.0878 | 0.1180
Level 3 | Common equity | Market Approach | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 16,937 | $ 15,877 | $ 15,375
Level 3 | Common equity | Market Approach | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 1,768 | $ 1,281 |
Level 3 | Common equity | Market Approach | Low | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0810 | 0.0810 | 0.0810
Level 3 | Common equity | Market Approach | Low | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0720 | 0.1020 |
Level 3 | Common equity | Market Approach | High | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1870 | 0.1870 | 0.1997
Level 3 | Common equity | Market Approach | High | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0880 | 0.1020 |
Level 3 | Common equity | Market Approach | Weighted Average | EBITDA Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.1330 | 0.1325 | 0.1311
Level 3 | Common equity | Market Approach | Weighted Average | Revenue Multiple |  |  |
Fair Value Measurements |  |  |
Measurement input | 0.0824 | 0.1020 |
Level 3 | Other Securities |  |  |
Fair Value Measurements |  |  |
Fair Value | $ 40,163 | $ 36,395 | $ 27,973

X
- Definition Investment Owned, Fair Value, Measurement Input + References No definition available. + Details
Name: | msdlf_InvestmentOwnedFairValueMeasurementInput
Namespace Prefix: | msdlf_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of investment in security owned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-6 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480493/946-210-55-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-6 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-2 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480167/946-830-55-12 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480524/946-210-50-6 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(11)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(2)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(2)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column A)(Footnote 1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-1 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)(Footnote 5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column C)(Footnote 6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)(Footnote 2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3 Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)(Footnote 9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3 Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6 Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6 Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 1)(b)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6 Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column F)(Footnote 7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6 + Details
Name: | us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=msdlf_ValuationTransactionPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=msdlf_MeasurementInputRecentTransactionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=msdlf_DebtSecuritiesFirstLienMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=msdlf_ValuationYieldAnalysisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=msdlf_DebtSecuritiesSecondLienMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=msdlf_OtherSecurityInvestmentsUnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_IncomeApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_MarketApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputEbitdaMultipleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=msdlf_OtherSecurityInvestmentsPreferredEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRevenueMultipleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=msdlf_OtherSecurityInvestmentsCommonEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_OtherAggregatedInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |