v3.26.3
Shareholders' Equity (Summary of Dividends) (Details) - $ / shares
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dividends          
Divdends declared per common share $ 1.16 $ 1.13 $ 3.42 $ 3.33  
Dividends paid per common share     $ 3.390 $ 3.300  
5.417% Series 1 Cumulative Convertible Preferred shares          
Dividends          
Preferred shares, percentage 5.417% 5.417% 5.417% 5.417% 5.417%
Dividends declared per preferred share     $ 1.016 $ 1.016  
Dividends paid per preferred share     $ 1.016 $ 1.016  
5.0% Series C Cumulative Redeemable Preferred shares          
Dividends          
Preferred shares, percentage     5.00% 5.00% 5.00%
Dividends declared per preferred share [1]     $ 0.938 $ 0.938  
Dividends paid per preferred share [1]     $ 0.938 $ 0.938  
[1] Amount represents dividends per depository share, each representing 1/1000th of a share.