Quarterly report [Sections 13 or 15(d)]

Share-Based Compensation - Additional Information (Detail)

v3.25.1
Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 11.6 $ 11.9
Weighted-average grant date fair value of SARs granted [1] $ 8.31  
Vested period 737  
Total vesting date fair value of stock units $ 5.3 6.5
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total intrinsic value of awards exercised for SARs $ 0.0 $ 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 $ 4.52 $ 4.43
Stock Appreciation Rights (SARs) | Service condition [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 $ 60.2  
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition 1 year 8 months 12 days  
Performance Stock Units [Member] | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period beginning from the grant date 2 years  
Performance Stock Units [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting period beginning from the grant date 3 years  
[1] Includes 1.4 million performance-based restricted stock units.