Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Restricted and Performance Restricted Stock Units Activity

The following table summarizes the 2013 Awards:

(Shares in millions)	Number of Shares	Weighted-Average Grant-Date Fair Value		Weighted-Average Exercise Price
Stock options	1.3	$	10.06	$	63.86
Restricted stock units (RSUs/PRSUs)	0.5	59.03		—

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table summarizes the assumptions used in the models to determine the fair value of the 2013 Awards:

Risk-free interest rate	0.2 - 2.9%
Weighted-average volatility	21.1	%
Dividend yield	2.72	%
Expected years until exercise	6.6 -7.6