Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

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

Assumptions for Stock Options and SARs

We used the following assumptions to determine the fair value of the SARs and stock options we granted to employees during the 2013first quarter:

Expected volatility	31	%
Dividend yield	1.17	%
Risk-free rate	1.8	%
Expected term (in years)	8