v3.26.3
Significant Accounting Policies - Schedule of Reconciliation of Cash, Foreign Cash and Restricted Cash (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Product Information [Line Items]        
PIK Interest Income     $ 120,163 $ 119,900
Non-controlled, non-affiliated investments        
Product Information [Line Items]        
PIK Interest Income $ 24,673 $ 23,823 73,699 61,752
PIK Dividend Income 14,316 16,120 42,317 39,975
Interest Income, Paid In Kind | Non-controlled, non-affiliated investments        
Product Information [Line Items]        
PIK Interest Income 24,940 24,983 74,999 65,043
Dividend Income, Paid In Kind | Non-controlled, non-affiliated investments        
Product Information [Line Items]        
PIK Dividend Income 14,277 19,412 49,050 49,469
Total, Paid In Kind | Non-controlled, non-affiliated investments        
Product Information [Line Items]        
Total PIK Income $ 39,217 $ 44,395 $ 124,049 $ 114,512
Revenue Benchmark | Product Concentration Risk | Interest Income, Paid In Kind | Non-controlled, non-affiliated investments        
Product Information [Line Items]        
Concentration risk (as percent) 7.30% 7.80% 7.50% 7.90%
Revenue Benchmark | Product Concentration Risk | Dividend Income, Paid In Kind | Non-controlled, non-affiliated investments        
Product Information [Line Items]        
Concentration risk (as percent) 4.20% 6.00% 4.90% 6.00%
Revenue Benchmark | Product Concentration Risk | Total, Paid In Kind | Non-controlled, non-affiliated investments        
Product Information [Line Items]        
Concentration risk (as percent) 11.50% 13.80% 12.30% 13.90%