Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of type and fair value of the stock-based compensation awards granted during the period

The following table illustrates the type and fair value of the stock-based compensation awards granted during the nine months ended September 30, 2019 and 2018, respectively:

	Nine Months Ended September 30, 2019					Nine Months Ended September 30, 2018
	Shares Granted	Weighted-Average Fair Value Per Share		Weighted-Average Grant Date Stock Price		Shares Granted	Weighted-Average Fair Value Per Share		Weighted-Average Grant Date Stock Price
Stock options	1,499,524	$	40.98	$	138.35	1,605,220	$	46.11	$	150.90
RSUs	657,389	$	138.35	$	138.35	722,521	$	150.64	$	150.64
PRSUs	342,097	$	138.35	$	138.35	344,866	$	150.93	$	150.93

Schedule providing assumptions used in determining the fair value of stock-based awards

The following table provides the assumptions used in determining the fair value of the stock-based awards for the nine months ended September 30, 2019 and 2018, respectively:

	Grant Year
	2019	2018
Weighted-average dividend yield	2.56%	2.70%
Weighted-average volatility	29.1%	30.2%
Range of volatilities	25.1-38.7%	21.5-33.0%
Range of risk-free interest rates	2.48-2.68%	2.02-2.87%
Weighted-average expected lives	7 years	8 years