v3.25.2
Fair Value of Financial Instruments - Schedule of Quantitative Information About Significant Unobservable Inputs of Level 3 Investments (Details)
$ in Thousands
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Discounted Cash Flow Analysis    
Fair Value $ 12,728,642 $ 6,407,466
First-lien senior secured debt investments    
Discounted Cash Flow Analysis    
Fair Value 9,924,118 4,456,838
Second-lien senior secured debt investments    
Discounted Cash Flow Analysis    
Fair Value 426,937 258,538
Unsecured debt investments    
Discounted Cash Flow Analysis    
Fair Value 451,319 336,635
Preferred equity investments    
Discounted Cash Flow Analysis    
Fair Value 1,022,197 689,952
Common equity investments    
Discounted Cash Flow Analysis    
Fair Value 893,578 664,556
Level 3    
Discounted Cash Flow Analysis    
Fair Value 12,076,329 6,074,522
Level 3 | First-lien senior secured debt investments    
Discounted Cash Flow Analysis    
Fair Value 9,548,767 4,346,309
Level 3 | First-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Fair Value 571,748 253,946
Level 3 | First-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Fair Value 8,973,803 4,090,310
Level 3 | First-lien senior secured debt investments | Collateral Analysis    
Discounted Cash Flow Analysis    
Fair Value 3,216 2,053
Level 3 | Second-lien senior secured debt investments    
Discounted Cash Flow Analysis    
Fair Value 310,288 166,159
Level 3 | Second-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Fair Value 59,898  
Level 3 | Second-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Fair Value 250,390 166,159
Level 3 | Unsecured debt investments    
Discounted Cash Flow Analysis    
Fair Value 451,319 336,635
Level 3 | Unsecured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Fair Value 448,290 177,356
Level 3 | Unsecured debt investments | Market Approach    
Discounted Cash Flow Analysis    
Fair Value 3,029  
Level 3 | Unsecured debt investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Fair Value   159,279
Level 3 | Preferred equity investments    
Discounted Cash Flow Analysis    
Fair Value 1,022,197 689,952
Level 3 | Preferred equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Fair Value 31,566 36,099
Level 3 | Preferred equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Fair Value 465,860 260,562
Level 3 | Preferred equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Fair Value 521,769 393,291
Level 3 | Preferred equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Fair Value 3,002  
Level 3 | Common equity investments    
Discounted Cash Flow Analysis    
Fair Value 743,758 535,467
Level 3 | Common equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Fair Value 118,436 138,010
Level 3 | Common equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Fair Value 73,559 75,296
Level 3 | Common equity investments | Market Approach    
Discounted Cash Flow Analysis    
Fair Value 21,191 3,448
Level 3 | Common equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Fair Value 228,810 151,151
Level 3 | Common equity investments | Market Approach | EBITDA Multiple    
Discounted Cash Flow Analysis    
Fair Value 135,242 103,833
Level 3 | Common equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Fair Value 278 281
Level 3 | Common equity investments | Market Approach | AUM Multiple    
Discounted Cash Flow Analysis    
Fair Value 163,837 62,517
Level 3 | Common equity investments | Discounted Cash Flow Analysis | Discounted Factor    
Discounted Cash Flow Analysis    
Fair Value 2,165 778
Level 3 | Common equity investments | Option Pricing Model | Volatility    
Discounted Cash Flow Analysis    
Fair Value $ 240 $ 153
Level 3 | Minimum | First-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.985 0.983
Level 3 | Minimum | First-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.066 0.068
Level 3 | Minimum | First-lien senior secured debt investments | Collateral Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0 0.112
Level 3 | Minimum | Second-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.990  
Level 3 | Minimum | Second-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.121 0.165
Level 3 | Minimum | Unsecured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.084 0.086
Level 3 | Minimum | Unsecured debt investments | Yield Analysis | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   10.3
Level 3 | Minimum | Unsecured debt investments | Market Approach    
Discounted Cash Flow Analysis    
Range (Weighted Average) 5.5  
Level 3 | Minimum | Preferred equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.975 1.003
Level 3 | Minimum | Preferred equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.117 0.123
Level 3 | Minimum | Preferred equity investments | Yield Analysis | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   2.5
Level 3 | Minimum | Preferred equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 2.0  
Level 3 | Minimum | Preferred equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 8.0  
Level 3 | Minimum | Common equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 1.000 0.968
Level 3 | Minimum | Common equity investments | Recent Transaction | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   5.3
Level 3 | Minimum | Common equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.187 0.183
Level 3 | Minimum | Common equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 4.5  
Level 3 | Minimum | Common equity investments | Market Approach | EBITDA Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 8.1 3.3
Level 3 | Minimum | Common equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 10.0 10.0
Level 3 | Minimum | Common equity investments | Market Approach | AUM Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 1.1 1.1
Level 3 | Minimum | Common equity investments | Discounted Cash Flow Analysis | Discounted Factor    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.200 0.125
Level 3 | Minimum | Common equity investments | Option Pricing Model | Volatility    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.600 0.600
Level 3 | Maximum | First-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.995 1.000
Level 3 | Maximum | First-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.178 0.352
Level 3 | Maximum | First-lien senior secured debt investments | Collateral Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 1.000 0.135
Level 3 | Maximum | Second-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.990  
Level 3 | Maximum | Second-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.273 0.436
Level 3 | Maximum | Unsecured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.158 0.167
Level 3 | Maximum | Unsecured debt investments | Yield Analysis | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   10.3
Level 3 | Maximum | Unsecured debt investments | Market Approach    
Discounted Cash Flow Analysis    
Range (Weighted Average) 5.5  
Level 3 | Maximum | Preferred equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.975 1.075
Level 3 | Maximum | Preferred equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.379 0.371
Level 3 | Maximum | Preferred equity investments | Yield Analysis | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   18.0
Level 3 | Maximum | Preferred equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 16.5  
Level 3 | Maximum | Preferred equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 8.0  
Level 3 | Maximum | Common equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 3.956 1.000
Level 3 | Maximum | Common equity investments | Recent Transaction | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   14.5
Level 3 | Maximum | Common equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.187 0.183
Level 3 | Maximum | Common equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 15.3  
Level 3 | Maximum | Common equity investments | Market Approach | EBITDA Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 27.0 20.0
Level 3 | Maximum | Common equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 10.0 10.0
Level 3 | Maximum | Common equity investments | Market Approach | AUM Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 1.1 1.1
Level 3 | Maximum | Common equity investments | Discounted Cash Flow Analysis | Discounted Factor    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.200 0.125
Level 3 | Maximum | Common equity investments | Option Pricing Model | Volatility    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.700 0.700
Level 3 | Weighted Average | First-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.991 0.990
Level 3 | Weighted Average | First-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.098 0.110
Level 3 | Weighted Average | First-lien senior secured debt investments | Collateral Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.730 0.131
Level 3 | Weighted Average | Second-lien senior secured debt investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.990  
Level 3 | Weighted Average | Second-lien senior secured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.164 0.196
Level 3 | Weighted Average | Unsecured debt investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.120 0.131
Level 3 | Weighted Average | Unsecured debt investments | Yield Analysis | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   10.3
Level 3 | Weighted Average | Unsecured debt investments | Market Approach    
Discounted Cash Flow Analysis    
Range (Weighted Average) 5.5  
Level 3 | Weighted Average | Preferred equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.975 1.056
Level 3 | Weighted Average | Preferred equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.149 0.202
Level 3 | Weighted Average | Preferred equity investments | Yield Analysis | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   7.8
Level 3 | Weighted Average | Preferred equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 7.7  
Level 3 | Weighted Average | Preferred equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 8.0  
Level 3 | Weighted Average | Common equity investments | Recent Transaction    
Discounted Cash Flow Analysis    
Range (Weighted Average) 3.047 0.979
Level 3 | Weighted Average | Common equity investments | Recent Transaction | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average)   11.3
Level 3 | Weighted Average | Common equity investments | Yield Analysis    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.187 0.183
Level 3 | Weighted Average | Common equity investments | Market Approach | Revenue Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 11.5  
Level 3 | Weighted Average | Common equity investments | Market Approach | EBITDA Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 12.5 13.1
Level 3 | Weighted Average | Common equity investments | Market Approach | Gross Profit Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 10.0 10.0
Level 3 | Weighted Average | Common equity investments | Market Approach | AUM Multiple    
Discounted Cash Flow Analysis    
Range (Weighted Average) 1.1 1.1
Level 3 | Weighted Average | Common equity investments | Discounted Cash Flow Analysis | Discounted Factor    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.200 0.125
Level 3 | Weighted Average | Common equity investments | Option Pricing Model | Volatility    
Discounted Cash Flow Analysis    
Range (Weighted Average) 0.698 0.691