Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

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 month periods ended March 31, 2013 and 2012, respectively:

	2013			2012
	Shares Granted	Fair Value Per Award		Shares Granted	Fair Value Per Award
Stock options	4,276,060	$	28.34	3,224,203	$	39.20
RSUs	1,614,870	$	84.05	1,429,939	$	104.61

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 month periods ended March 31, 2013 and 2012, respectively:

	Grant Year
	2013	2012
Weighted-average dividend yield	2.13%	2.16%
Weighted-average volatility	30.6%	35.0%
Range of volatilities	23.4-40.6%	33.3-40.4%
Range of risk-free interest rates	0.16-1.88%	0.17-2.00%
Weighted-average expected lives	8 years	7 years