Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Tables)

v3.10.0.1
STOCK-BASED COMPENSATION (Tables)
 9 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Fair Value of Employee Stock Options Granted and Determined by Black-Scholes Valuation Model Assumptions The fair value of each option grant is estimated using the Black-Scholes option pricing model. The weighted-average assumptions used and the calculated weighted-average fair values of options granted in 2018 and 2017 are as follows:
 
2018
 
2017
Expected dividend yield
2.93
%
 
2.89
%
Risk-free interest rate
2.84
%
 
2.15
%
Expected life (in years)
7.5

 
7.5

Expected volatility
16.72
%
 
17.81
%
Weighted-average fair value of options granted
$
15.23

 
$
14.70

The weighted-average assumptions used and the calculated weighted-average fair values of the RTSR portion of the LTIP awards granted in the third quarter of 2018, the second quarter of 2018 and 2017 are as follows:
 
Q3 2018
 
Q2 2018
 
2017
Risk-free interest rate
2.70
%
 
2.61
%
 
1.46
%
Expected volatility
16.91
%
 
16.51
%
 
16.59
%
Weighted-average fair value of units granted
$
156.55

 
$
137.53

 
$
119.29

Share payout
129.83
%
 
123.46
%
 
113.55
%