Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [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 three months ended March 31, 2016 and 2015, respectively:

	Three Months Ended March 31, 2016					Three Months Ended March 31, 2015
	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	4,243,272	$	20.64	$	74.77	7,939,497	$	23.61	$	83.34
RSUs	1,085,505	$	68.04	$	74.77	1,690,661	$	77.55	$	83.02
PRSUs	614,347	$	64.71	$	74.77	132,068	$	77.47	$	82.90

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 three months ended March 31, 2016 and 2015, respectively:

	Grant Year
	2016	2015
Weighted-average dividend yield	3.23%	2.27%
Weighted-average volatility	31.1%	28.4%
Range of volatilities	22.5-33.4%	19.9-35.9%
Range of risk-free interest rates	0.62-1.73%	0.22-2.08%
Weighted-average expected lives	8 years	8 years