v3.25.4
Earnings per Share - Reconciliation of Numerator and Denominator of Net Earnings per Basic and Diluted Share Calculations (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share Basic And Diluted [Line Items]      
Basic $ 1.18 $ 3.16 $ 2.81
Diluted $ 1.15 $ 3.06 $ 2.69
Net earnings $ 32.4 $ 92.4 $ 82.2
Weighted average number of common shares outstanding 27.5 29.2 29.3
Dilutive awards 0.7 1.0 1.3
Diluted weighted average number of common shares outstanding 28.2 30.2 30.6