v3.26.3
Financial Highlights (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Investment Company, Net Assets [Roll Forward]                
Net asset value, beginning of period (in usd per share)     $ 14.81 $ 15.26        
Net investment income (in usd per share)     1.01 1.20        
Net realized and unrealized gain (loss) (in usd per share)     (0.56) (0.19)        
Net increase (decrease) in net assets resulting from operations (in usd per share)     0.45 1.01        
Distributions declared from earnings (in usd per share)     (1.01) (1.19)        
Repurchase of common shares (in usd per share)     0.07 0        
Issuance of common shares in connection with the OBDE Mergers (in usd per share)     0 (0.19)        
Total increase (decrease) in net assets (in usd per share)     (0.49) (0.37)        
Net asset value, end of period (in usd per share) $ 14.32 $ 14.89 $ 14.32 $ 14.89        
Shares outstanding, end of period (in shares) 490,029,636 511,048,237 490,029,636 511,048,237   499,448,499    
Per share market value at end of period (in usd per share) $ 10.49 $ 12.77 $ 10.49 $ 12.77        
Total return, based on market value     (7.40%) (8.30%)        
Total return, based on net asset value     6.10% 6.00%        
Ratio of total expenses to average net assets     12.80% 14.60%        
Ratio of net investment income to average net assets     9.40% 11.20%        
Net assets, end of period $ 7,014,902 $ 7,611,271 $ 7,014,902 $ 7,611,271 $ 7,031,759 $ 7,397,279 $ 7,682,397 $ 5,952,841
Weighted-average shares outstanding (in shares) 492,260,158 511,048,237 495,489,300 505,700,153        
Portfolio turnover rate     8.40% 21.90%        
Ratio of total expenses to average net assets     0.128 0.146