XML 123 R98.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-based Compensation Plans - Additional Information 3 (Detail) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation expense   $ 82,776,000 [1] $ 55,618,000 $ 57,801,000
Accelerated vesting of equity grants $ 30,800,000 30,800,000    
Total intrinsic value of stock options and SARs exercised   0 0 5,400,000
Aggregate intrinsic value of the awards outstanding 0 0    
Aggregate intrinsic value of the awards exercisable 0 $ 0    
Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted average remaining contractual life of awards exercisable   1 year    
Performance-based PG-PSUs and RG-PSUs        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period   3 years    
Stock-based compensation expense   $ 1,800,000    
Accelerated vesting of equity grants   $ 1,500,000    
Performance Based TSR - PSUs        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period   3 years    
Stock-based compensation expense   $ 24,800,000 $ 12,400,000 $ 8,700,000
Accelerated vesting of equity grants   $ 13,000,000    
Performance Share        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Vesting period   3 years    
Unrecognized compensation related to Awards 1,200,000 $ 1,200,000    
Weighted average period   2 years    
Stock Appreciation Rights (SARs)        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized compensation related to Awards $ 0 $ 0    
Number of fully vested awards and awards expected to vest 383,000 383,000    
Weighted average exercise price of fully vested awards and awards expected to vest $ 76.54 $ 76.54    
Weighted average exercise price of fully vested awards and awards expected to vest in years   4 months 24 days    
[1] Includes $30.8 million accelerated vesting of equity grants.