v3.26.1
Equities - Schedule of Dividends Declared Per Share for Preferred Stock (Details) - $ / shares
 3 Months Ended 6 Months Ended
Feb. 28, 2026
Feb. 28, 2025
Feb. 28, 2026
Feb. 28, 2025
8% Cumulative Redeemable        
Class of Stock [Line Items]        
Preferred stock dividend rate     8.00%  
Preferred stock dividends declared (in dollars per share) $ 0.50 $ 0.50 $ 1.50 $ 1.50
Class B Cumulative Redeemable, Series 1        
Class of Stock [Line Items]        
Preferred stock dividends declared (in dollars per share) 0.49 0.49 1.48 1.48
Class B Reset Rate Cumulative Redeemable, Series 2        
Class of Stock [Line Items]        
Preferred stock dividends declared (in dollars per share) 0.44 0.44 1.33 1.33
Class B Reset Rate Cumulative Redeemable, Series 3        
Class of Stock [Line Items]        
Preferred stock dividends declared (in dollars per share) 0.42 0.42 1.27 1.27
Class B Cumulative Redeemable, Series 4        
Class of Stock [Line Items]        
Preferred stock dividends declared (in dollars per share) $ 0.47 $ 0.47 $ 1.41 $ 1.41