v3.25.2
Dividends on common stock: (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Aug. 06, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dividends on common stock          
Dividends declared per common share   $ 1.01 $ 0.975 $ 2.015 $ 1.94
O 2025 Q3 Dividends | Subsequent Events          
Dividends on common stock          
Dividends, date of approval Aug. 06, 2025        
Dividends declared per common share $ 1.015        
Dividends payable $ 48.4        
Dividends payable date Sep. 05, 2025