Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Additional Information (Detail)

v3.24.0.1
Share-Based Compensation - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Apr. 26, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common shares authorized under 2014 Stock Incentive Plan 24,800,000        
Common shares remain for future issuance under share-based compensation plans 4,500,000        
Realized income tax benefit for all awards $ 11,200,000 $ 10,400,000 $ 10,500,000    
Excess tax benefits (expense) on share-based compensation arrangements (5,200,000) (600,000) 3,500,000    
Total vesting date fair value of stock units $ 27,200,000 $ 38,000,000 $ 43,200,000    
Reserved for issuance under employee stock purchase plan 4,000,000        
Future issuance of employee stock purchase plan 2,600,000        
Percent of fair market value for which eligible employees can purchase common shares under employee stock purchase plan 85.00%        
Weighted-average grant date fair value of SARs granted [1] $ 13.81        
Performance conditions [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
SARs granted     0    
Performance conditions [Member] | First Succeeding Year [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance stock unit awards vesting percentage 20.00%        
Performance conditions [Member] | Second Succeeding Year [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance stock unit awards vesting percentage 20.00%        
Performance conditions [Member] | Third Succeeding Year [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance stock unit awards vesting percentage 60.00%        
Chief Executive Officer [Member] | Performance conditions [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance stock unit awards vesting date   Dec. 31, 2024 Dec. 31, 2023    
Stock options and SARs [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Contractual term 10 years        
SARs [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted-average grant date fair value of SARs granted $ 7.83 $ 6.38      
SARs granted 1,814,000        
SARs [Member] | Performance conditions [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards granted 0   0    
SARs granted 0 0 0    
SARs [Member] | Performance conditions [Member] | First Succeeding Year [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Awards granted       0  
SARs [Member] | Service condition [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period beginning from the grant date 3 years        
Awards granted     0 0  
SARs granted     0    
SARs [Member] | Stock Incentive Plan Other [Member] | Performance conditions [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period beginning from the grant date 3 years        
SARs [Member] | Chief Executive Officer [Member] | Service condition [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period beginning from the grant date 2 years        
Service condition awards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation expense (benefit) $ 49,500,000 $ 44,500,000 $ 43,600,000    
Unrecognized compensation cost on non-vested stock awards $ 71,100,000        
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition 1 year 9 months 18 days        
Total intrinsic value of awards exercised for options and SARs   400,000 19,100,000    
Service condition awards [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total intrinsic value of awards exercised for options and SARs $ 100,000        
Performance condition awards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation expense (benefit) (1,500,000) (100,000) 10,500,000    
Unrecognized compensation cost on non-vested stock awards 0        
Total intrinsic value of awards exercised for options and SARs $ 0 $ 100,000 $ 6,500,000    
Performance condition awards [Member] | Independent Director Stock Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period beginning from the grant date 1 year        
Performance condition awards [Member] | Chief Executive Officer [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance stock unit awards vesting percentage 0.00% 0.00% 0.00%    
Performance condition awards [Member] | Chief Executive Officer [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance stock unit awards vesting percentage 200.00% 200.00% 200.00%    
Market condition awards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total intrinsic value of awards exercised for options and SARs $ 0 $ 0 $ 1,100,000    
Management Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Additional awards 0        
2014 Stock Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Additional awards 0        
2005 Stock Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Additional awards 0        
2023 Stock Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common shares remain for future issuance under share-based compensation plans         8,500,000
Awards granted 0        
Stock Incentive Plan [Member] | Performance condition awards [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting period beginning from the grant date 3 years        
Contractual term 3 years        
[1] Includes 29,927 performance-based stock unit awards.