XML 54 R43.htm IDEA: XBRL DOCUMENT v3.19.1
Stock Compensation Plans (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Apr. 25, 2019
Jun. 30, 2019
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock, shares authorized (in shares)     150,000,000   150,000,000
Total stock compensation expense     $ 12.5 $ 9.2  
2006 Long Term Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock, shares authorized (in shares)     10,000,000    
Shares available for grant (in shares)     3,127,344    
Performance Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average grant-date fair value of performance awards granted (in dollars per share)     $ 61.01 $ 71.40  
Shares awarded (in shares)     542,180    
Share-based compensation cost not yet recognized     $ 53.2    
Share-based compensation, recognition period of unrecognized compensation cost, years     2 years    
Restricted Stock Unit Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average grant-date fair value of performance awards granted (in dollars per share)     $ 61.01 $ 71.40  
Shares awarded (in shares)     165,160    
Share-based compensation cost not yet recognized     $ 20.9    
Share-based compensation, recognition period of unrecognized compensation cost, years     2 years    
Shares received for every restricted stock unit award given     1    
Requisite period     3 years    
Stock-Settled Appreciation Rights          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based compensation cost not yet recognized     $ 6.0    
Share-based compensation, recognition period of unrecognized compensation cost, years     3 years    
Vesting Year One | Restricted Stock Unit Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage     33.33%    
Vesting Year Two | Restricted Stock Unit Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage     33.33%    
Vesting Year Three | Restricted Stock Unit Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting percentage     33.33%    
Scenario, Forecast | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock compensation expense   $ 1.4      
Subsequent Event | Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares awarded (in shares) 19,386        
Shares awarded after shares with held for taxes (in shares) 14,105