v3.26.1
Net Increase (Decrease) in Net Assets per Common Share - Narrative (Details) - shares
 12 Months Ended
Oct. 30, 2020
Aug. 03, 2020
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Class of Stock [Line Items]          
Antidilutive securities excluded from computation (in shares)     49,182,136 54,410,942 3,711,904
Diluted (in shares)     479,866,265 440,314,909 625,276,736
Convertible Preferred Stock          
Class of Stock [Line Items]          
Diluted (in shares)         55,335,151
5.50% Preferred Stock          
Class of Stock [Line Items]          
Dividend rate   5.50% 5.50% 5.50%  
6.50% Preferred Stock          
Class of Stock [Line Items]          
Dividend rate 6.50% 6.50% 6.50% 6.50%