Quarterly report [Sections 13 or 15(d)]

Share-Based Compensation - Additional Information (Detail)

v3.26.1
Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 10.6 $ 11.6
Weighted-average grant date fair value of SARs granted [1] $ 19.26  
Total vesting date fair value of stock units $ 0.8 5.3
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total intrinsic value of awards exercised for SARs   $ 0.0
Stock Appreciation Rights (SARs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average grant date fair value of SARs granted $ 10.51 $ 4.52
Stock Appreciation Rights (SARs) | Service condition [Member] | Executives [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period beginning from the grant date 3 years  
Service Condition Awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost on non-vested stock awards $ 53.8  
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition 1 year 2 months 12 days  
Total intrinsic value of awards exercised for options and SARs $ 0.7  
Performance Award [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period beginning from the grant date 3 years  
[1] Includes 1.2 million performance-based restricted stock units.