v3.26.1
Fair Value of Financial Instruments - Summary of Changes In Fair Value of Company's Level 3 Debt (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Transfers into/(out of) of Level 3 $ 0 $ 0
Significant Unobservable Inputs (Level 3)    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Fair Value, Beginning balance 2,386,232,000 1,710,169,000
Purchases, net of deferred fees 917,006,000 1,453,204,000
Proceeds from sales and paydowns (613,382,000) (819,165,000)
Accretion of OID, EOT, and PIK payments 29,567,000 50,680,000
Net realized gain/(loss) $ (10,694,000) $ (64,114,000)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Realized gain Realized gain
Net change in unrealized appreciation/(depreciation) $ (7,916,000) $ 55,458,000
Fair Value, Ending balance 2,700,813,000 2,386,232,000
Net change in unrealized appreciation/(depreciation) on Level 3 investments still held (20,949,000) 16,840,000
Debt | Significant Unobservable Inputs (Level 3)    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Fair Value, Beginning balance 2,199,964,000 1,602,131,000
Purchases, net of deferred fees 860,436,000 1,396,567,000
Non-cash conversions (25,912,000) (4,640,000)
Proceeds from sales and paydowns (599,010,000) (809,842,000)
Accretion of OID, EOT, and PIK payments 29,308,000 50,593,000
Net realized gain/(loss) (11,420,000) (62,262,000)
Net change in unrealized appreciation/(depreciation) (16,041,000) 27,417,000
Fair Value, Ending balance 2,437,325,000 2,199,964,000
Net change in unrealized appreciation/(depreciation) on Level 3 investments still held (26,097,000) (9,319,000)
Equity | Significant Unobservable Inputs (Level 3)    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Fair Value, Beginning balance 108,342,000 56,584,000
Purchases, net of deferred fees 52,651,000 36,056,000
Non-cash conversions 25,919,000 4,751,000
Proceeds from sales and paydowns (12,828,000) (4,000,000)
Accretion of OID, EOT, and PIK payments 259,000 87,000
Net realized gain/(loss) 2,974,000 (679,000)
Net change in unrealized appreciation/(depreciation) 5,649,000 15,543,000
Fair Value, Ending balance 182,966,000 108,342,000
Net change in unrealized appreciation/(depreciation) on Level 3 investments still held 4,486,000 13,717,000
Warrants | Significant Unobservable Inputs (Level 3)    
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Fair Value, Beginning balance 77,926,000 51,454,000
Purchases, net of deferred fees 3,919,000 20,581,000
Non-cash conversions (7,000) (111,000)
Proceeds from sales and paydowns (1,544,000) (5,323,000)
Net realized gain/(loss) (2,248,000) (1,173,000)
Net change in unrealized appreciation/(depreciation) 2,476,000 12,498,000
Fair Value, Ending balance 80,522,000 77,926,000
Net change in unrealized appreciation/(depreciation) on Level 3 investments still held $ 662,000 $ 12,442,000