v3.26.1
Shareholders' Equity (Summary of Dividends) (Details) - $ / shares
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dividends          
Divdends declared per common share $ 1.13 $ 1.10 $ 2.26 $ 2.20  
Dividends paid per common share     $ 2.260 $ 2.200  
5.417% Series 1 Cumulative Convertible Preferred shares          
Dividends          
Preferred shares, percentage 5.417%   5.417% 5.417% 5.417%
Dividends declared per preferred share     $ 0.677 $ 0.677  
Dividends paid per preferred share     $ 0.677 $ 0.677  
5.0% Series C Cumulative Redeemable Preferred shares          
Dividends          
Preferred shares, percentage     5.00% 5.00% 5.00%
Dividends declared per preferred share [1]     $ 0.625 $ 0.625  
Dividends paid per preferred share [1]     $ 0.625 $ 0.625  
[1] Amount represents dividends per depository share, each representing 1/1000th of a share.