v3.26.1
Equity Offerings, Offering Expenses, and Distributions - Common Stock Narrative (Details) - USD ($)
 12 Months Ended
Aug. 20, 2026
Feb. 10, 2026
Oct. 30, 2020
Aug. 03, 2020
Jun. 30, 2026
Jun. 30, 2025
Jul. 07, 2026
May 21, 2020
Aug. 24, 2011
Class of Stock [Line Items]                  
Stock repurchase program, authorized amount                 $ 100,000,000
Stock repurchase program, remaining authorized repurchase amount         $ 65,860,000        
Market price threshold               95.00%  
Payments of dividends, common stock         $ 249,696,000 $ 264,059,000      
Subsequent Event                  
Class of Stock [Line Items]                  
Outstanding shares threshold             25.00%    
O 2026 M10 Dividends                  
Class of Stock [Line Items]                  
Dividends payable (usd per share)         $ 0.035        
O 2026 M11 Dividends                  
Class of Stock [Line Items]                  
Dividends payable (usd per share)         $ 0.035        
Issuable Upon Conversion                  
Class of Stock [Line Items]                  
Capital shares reserved for future issuance (in shares)         612,825,656        
Issuable to Common Stock Holders Pursuant to Dividend Reinvestment and Direct Stock Purchase Plans                  
Class of Stock [Line Items]                  
Capital shares reserved for future issuance (in shares)         89,165,178        
5.50% Preferred Stock                  
Class of Stock [Line Items]                  
Dividend rate   5.50% 5.50% 5.50% 5.50% 5.50%      
Dividend rate       5.50% 5.50% 5.50%      
5.50% Preferred Stock | Subsequent Event                  
Class of Stock [Line Items]                  
Dividend rate 5.50%                
6.50% Preferred Stock                  
Class of Stock [Line Items]                  
Dividend rate       6.50% 6.50% 6.50%      
Dividend rate     6.50% 6.50% 6.50% 6.50%      
6.50% Preferred Stock | Subsequent Event                  
Class of Stock [Line Items]                  
Dividend rate 6.50%                
Common Stock                  
Class of Stock [Line Items]                  
Stock repurchased during period (in shares)         0 0      
Shares issued (in shares)         0 0      
Value of shares issued through reinvestment of dividends (in shares)         10,834,822 7,505,661