v3.26.3
Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Earnings Per Share [Abstract]        
Net income $ 221.2 $ 259.9 $ 607.4 $ 663.4
Weighted average number of shares outstanding, basic (in shares) 34.4 35.1 34.6 35.3
Add: Potential effect of dilutive securities attributable to stock-based payments 0.1 0.1 0.2 0.2
Weighted-average shares outstanding – diluted 34.5 35.2 34.8 35.5
Earnings per share - Basic (in dollars per share) $ 6.43 $ 7.41 $ 17.54 $ 18.78
Earnings per share - Diluted (in dollars per share) $ 6.41 $ 7.38 $ 17.47 $ 18.70