v3.26.1
Earnings Per Share - Schedule of Reconciliation of Basic and Diluted Earnings Per Share Computations (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings per common share:            
Net income attributable to common stockholders $ 209.1 $ 136.3 $ 145.6 $ 53.2 $ 345.4 $ 198.8
Weighted average common shares outstanding (in shares) 18,438   19,546   18,478 19,738
Earnings per common share (in dollars per share) $ 11.34   $ 7.44   $ 18.69 $ 10.07
Earnings per common share - assuming dilution:            
Net income attributable to common stockholders $ 209.1 $ 136.3 $ 145.6 $ 53.2 $ 345.4 $ 198.8
Weighted average common shares outstanding (in shares) 18,438   19,546   18,478 19,738
Common equivalent shares:            
Dilutive share-based awards (in shares) 114   219   150 247
Weighted average common shares outstanding - assuming dilution (in shares) 18,552   19,765   18,628 19,985
Earnings per common share assuming dilution (in dollars per share) $ 11.27   $ 7.36   $ 18.54 $ 9.95