XML 95 R61.htm IDEA: XBRL DOCUMENT v3.19.3
STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Payment Arrangement [Abstract]        
Total remaining unrecognized compensation cost $ 143.3   $ 143.3  
Unrecognized compensation cost, recognition period     32 months  
Option Awards        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Options granted (in shares)     800  
Weighted average exercise price (in dollars per share)     $ 178.81  
Average risk-free interest rate 1.80% 2.80% 2.30% 2.90%
Expected volatility (as a percent) 29.70% 29.20% 29.60% 29.10%
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock units granted (in shares)     200  
Weighted average grant date fair value (in dollars per share)     $ 179.85  
Market Based Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Restricted stock units granted (in shares)     33  
Weighted average grant date fair value (in dollars per share)     $ 193.95  
Award vesting period     3 years  
Average risk-free interest rate     2.20% 2.70%
Expected volatility (as a percent)     29.40% 29.70%
Minimum | Market Based Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Target shares (as a percent)     0.00%  
Maximum | Market Based Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Target shares (as a percent)     175.00%