v3.25.2
Net Increase (Decrease) in Net Assets per Common Share - Narrative (Details)
 12 Months Ended
Oct. 30, 2020
Aug. 03, 2020
Jun. 30, 2025
Jun. 30, 2024
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%