v3.26.1
Fair Value Measurements - Fair Value Hierarchy of Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total $ 13,364,295 $ 14,207,294
First lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 12,944,578 13,866,434
Second lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 250,182 231,650
Unsecured debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 12,348 12,278
Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 157,187 96,932
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 438
Level 1 | First lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 0
Level 1 | Second lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 0
Level 1 | Unsecured debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 0
Level 1 | Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 438
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 81,460 106,617
Level 2 | First lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 81,460 106,617
Level 2 | Second lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 0
Level 2 | Unsecured debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 0
Level 2 | Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 0 0
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 13,282,835 14,100,239
Level 3 | First lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 12,863,118 13,759,817
Level 3 | Second lien debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 250,182 231,650
Level 3 | Unsecured debt    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total 12,348 12,278
Level 3 | Equity    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total $ 157,187 $ 96,494