XML 137 R100.htm IDEA: XBRL DOCUMENT v3.8.0.1
Share-Based Compensation Plans - Restricted Stock Unit Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Jun. 27, 2015
Number of Non-vested Service- Based Share Units        
Beginning balance (in shares) 0 0 0  
Granted (in shares) 0 0 0 0
Vested (in shares) 0 0 0 0
Ending balance (in shares) 0 0 0 0
Service-based Restricted Share Units        
Number of Non-vested Service- Based Share Units        
Beginning balance (in shares)   468,000 382,000  
Granted (in shares)   298,000 298,000  
Vested (in shares)   (112,000) (92,000)  
Forfeited (in shares)   (55,000) (120,000)  
Ending balance (in shares) 382,000 599,000 468,000  
Weighted- Average Grant Date Fair Value Per Share        
Beginning balance (in dollars per share)   $ 137.53 $ 154.07  
Granted (in dollars per share) $ 165.64 70.55 113.26 $ 153.99
Vested (in dollars per share)   128.86 137.15  
Forfeited (in dollars per share)   120.97 151.64  
Ending balance (in dollars per share) $ 154.07 $ 107.26 $ 137.53  
Weighted- Average Remaining Term in Years   1 year 6 months 1 year 8 months 16 days  
Aggregate Intrinsic Value   $ 52.2 $ 39.0  
Performance-based Restricted Share Units        
Number of Non-vested Service- Based Share Units        
Beginning balance (in shares)   177,000 223,000  
Granted (in shares)   191,000 159,000  
Vested (in shares)   (27,000) (81,000)  
Forfeited (in shares)   (38,000) (124,000)  
Ending balance (in shares) 223,000 303,000 177,000  
Weighted- Average Grant Date Fair Value Per Share        
Beginning balance (in dollars per share)   $ 138.29 $ 146.31  
Granted (in dollars per share) $ 184.49 70.34 126.37 $ 150.14
Vested (in dollars per share)   142.18 128.74  
Forfeited (in dollars per share)   130.34 143.64  
Ending balance (in dollars per share) $ 146.31 $ 93.65 $ 138.29  
Weighted- Average Remaining Term in Years   2 years 1 year 8 months 5 days  
Aggregate Intrinsic Value   $ 26.5 $ 14.8