Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Additional Information (Detail)

v3.22.4
Share-Based Compensation - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
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 2,600,000    
Realized income tax benefit for all awards $ 10,400,000 $ 10,500,000 $ 9,600,000
Excess tax benefits (expense) on share-based compensation arrangements (600,000) 3,500,000 3,100,000
Total vesting date fair value of stock units $ 38,000,000.0 $ 43,200,000 $ 23,000,000.0
Reserved for issuance under employee stock purchase plan 4,000,000.0    
Future issuance of employee stock purchase plan 2,900,000    
Percent of fair market value for which eligible employees can purchase common shares under employee stock purchase plan 85.00%    
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 Dec. 31, 2022
Stock options and SARs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Contractual term 10 years    
SARs [Member] | Performance conditions [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards granted 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]      
Awards granted   0 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    
Service condition awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense (benefit) $ 44,500,000 $ 43,600,000 $ 38,300,000
Unrecognized compensation cost on non-vested stock awards $ 75,400,000    
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition 1 year 7 months 6 days    
Total intrinsic value of awards exercised for options and SARs $ 400,000 19,100,000 28,000,000.0
Performance condition awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation expense (benefit) (100,000) 10,500,000 12,700,000
Unrecognized compensation cost on non-vested stock awards $ 3,600,000    
Unrecognized compensation cost on non-vested stock awards, weighted-average period of recognition 1 year 7 months 6 days    
Total intrinsic value of awards exercised for options and SARs $ 100,000 $ 6,500,000 $ 28,800,000
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 $ 1,100,000 $ 0
Management Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Additional awards 0    
2004 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    
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