v3.26.1
Fair Value of Financial Instruments - Schedule of Quantitative Information About Significant Unobservable Inputs of Level 3 Investments (Details)
$ in Thousands
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 35,500,450 [1],[2] $ 35,918,948 [3],[4]
Specialty finance debt investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value 136,796 134,800
Preferred equity investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value 506,595 496,312
Common equity investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value 457,746 435,238
Specialty finance equity investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value 1,293,753 900,635
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value 30,587,040 $ 30,479,543
Level 3 | Market Approach | AUM Multiple | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent)   1.1
Level 3 | First-lien senior secured debt investments | Yield Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 26,852,470 $ 23,991,494
Level 3 | First-lien senior secured debt investments | Yield Analysis | Market Yield | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.070 0.060
Level 3 | First-lien senior secured debt investments | Yield Analysis | Market Yield | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.373 0.864
Level 3 | First-lien senior secured debt investments | Yield Analysis | Market Yield | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.094 0.092
Level 3 | First-lien senior secured debt investments | Recent Transaction    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 807,207 $ 3,434,307
Level 3 | First-lien senior secured debt investments | Recent Transaction | Transaction Price | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.898 0.950
Level 3 | First-lien senior secured debt investments | Recent Transaction | Transaction Price | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.998 1.000
Level 3 | First-lien senior secured debt investments | Recent Transaction | Transaction Price | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.995 0.994
Level 3 | First-lien senior secured debt investments | Collateral Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 77,500 $ 103,365
Level 3 | First-lien senior secured debt investments | Collateral Analysis | Recovery Rate | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.030 0.000
Level 3 | First-lien senior secured debt investments | Collateral Analysis | Recovery Rate | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 1.000 1.072
Level 3 | First-lien senior secured debt investments | Collateral Analysis | Recovery Rate | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.576 0.777
Level 3 | Second-lien senior secured debt investments | Yield Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 1,020,719 $ 1,105,661
Level 3 | Second-lien senior secured debt investments | Yield Analysis | Market Yield | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.099 0.084
Level 3 | Second-lien senior secured debt investments | Yield Analysis | Market Yield | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.450 0.624
Level 3 | Second-lien senior secured debt investments | Yield Analysis | Market Yield | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.135 0.135
Level 3 | Unsecured debt investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 72,600 $ 75,000
Level 3 | Unsecured debt investments | Yield Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 366,443 $ 404,796
Level 3 | Unsecured debt investments | Yield Analysis | Market Yield | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.055 0.055
Level 3 | Unsecured debt investments | Yield Analysis | Market Yield | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.187 0.176
Level 3 | Unsecured debt investments | Yield Analysis | Market Yield | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.132 0.122
Level 3 | Unsecured debt investments | Market Approach | EBITDA Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 36 $ 35
Measurement input (as a percent) 12.0 12.0
Level 3 | Specialty finance debt investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 136,796 $ 134,800
Level 3 | Specialty finance debt investments | Yield Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value   $ 134,800
Level 3 | Specialty finance debt investments | Yield Analysis | Market Yield    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 136,796  
Measurement input (as a percent) 0.122 0.116
Level 3 | Preferred equity investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 506,595 $ 496,312
Level 3 | Preferred equity investments | Yield Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 455,310 $ 472,395
Level 3 | Preferred equity investments | Yield Analysis | Market Yield | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.128 0.116
Level 3 | Preferred equity investments | Yield Analysis | Market Yield | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.436 0.353
Level 3 | Preferred equity investments | Yield Analysis | Market Yield | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.170 0.148
Level 3 | Preferred equity investments | Recent Transaction    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 39,679  
Level 3 | Preferred equity investments | Recent Transaction | Transaction Price | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 1.111  
Level 3 | Preferred equity investments | Recent Transaction | Transaction Price | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 2.899  
Level 3 | Preferred equity investments | Recent Transaction | Transaction Price | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 2.246  
Level 3 | Preferred equity investments | Market Approach | EBITDA Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value   $ 21,728
Measurement input (as a percent)   128.9
Level 3 | Preferred equity investments | Market Approach | Revenue Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 11,606 $ 2,189
Level 3 | Preferred equity investments | Market Approach | Revenue Multiple | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 13.2 11.3
Level 3 | Preferred equity investments | Market Approach | Revenue Multiple | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 21.0 14.8
Level 3 | Preferred equity investments | Market Approach | Revenue Multiple | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 20.1 13.1
Level 3 | Common equity investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 305,124 $ 291,027
Level 3 | Common equity investments | Yield Analysis | Market Yield    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 1,703 $ 1,666
Measurement input (as a percent) 0.084 0.085
Level 3 | Common equity investments | Recent Transaction    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 29,757  
Level 3 | Common equity investments | Recent Transaction | Transaction Price    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value   $ 70,440
Measurement input (as a percent) 1.000 100
Level 3 | Common equity investments | Market Approach    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 16,504  
Level 3 | Common equity investments | Market Approach | Recovery Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 49,058  
Level 3 | Common equity investments | Market Approach | Recovery Rate | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.0  
Level 3 | Common equity investments | Market Approach | Recovery Rate | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 99.0  
Level 3 | Common equity investments | Market Approach | Recovery Rate | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 99.0  
Level 3 | Common equity investments | Market Approach | EBITDA Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 155,677 $ 154,563
Level 3 | Common equity investments | Market Approach | EBITDA Multiple | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 7.0 8.8
Level 3 | Common equity investments | Market Approach | EBITDA Multiple | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 21.5 25.5
Level 3 | Common equity investments | Market Approach | EBITDA Multiple | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 14.2 14.6
Level 3 | Common equity investments | Market Approach | Revenue Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 51,766 $ 49,366
Level 3 | Common equity investments | Market Approach | Revenue Multiple | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 3.9 6.3
Level 3 | Common equity investments | Market Approach | Revenue Multiple | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 21.0 13.0
Level 3 | Common equity investments | Market Approach | Revenue Multiple | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 7.5 10.3
Level 3 | Common equity investments | Market Approach | Market Adjustment Factor    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value   $ 14,465
Measurement input (as a percent) (0.032) 0.000
Level 3 | Common equity investments | Market Approach | Gross Profit Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 6 $ 9
Measurement input (as a percent) 7.0 9.0
Level 3 | Common equity investments | Option Pricing Model    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 653 $ 518
Level 3 | Common equity investments | Option Pricing Model | Volatility    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 0.700 0.700
Level 3 | Specialty finance equity investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 441,545 $ 442,727
Level 3 | Specialty finance equity investments | Yield Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 4,167 $ 4,105
Measurement input (as a percent) 0.118  
Level 3 | Specialty finance equity investments | Yield Analysis | Market Yield    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent)   0.115
Level 3 | Specialty finance equity investments | Market Approach    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 79,421 $ 81,369
Level 3 | Specialty finance equity investments | Market Approach | AUM Multiple    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 355,988 $ 355,116
Level 3 | Specialty finance equity investments | Market Approach | AUM Multiple | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 1.0 1.1
Level 3 | Specialty finance equity investments | Market Approach | AUM Multiple | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 1.3 1.3
Level 3 | Specialty finance equity investments | Market Approach | AUM Multiple | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent) 1.0  
Level 3 | Specialty finance equity investments | Discounted Cash Flow Analysis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments at fair value $ 1,969 $ 2,137
Measurement input (as a percent) 0.200  
Level 3 | Specialty finance equity investments | Discounted Cash Flow Analysis | Discount Rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input (as a percent)   0.200
[1] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on our restricted securities.
[2] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Revolving Credit Facility, SPV Asset Facilities and CLOs. See “Note 5 — Debt”.
[3] Certain portfolio company investments are subject to contractual restrictions on sales. Refer to footnote 30 for additional information on our restricted securities.
[4] Unless otherwise indicated, the Company’s portfolio companies are pledged as collateral supporting the amounts outstanding under the Revolving Credit Facility, SPV Asset Facilities and CLOs. See “Note 5 — Debt”.