Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Stock-Based Compensation

Schedule of weighted-average assumptions for stock options

	2013			2012
Expected dividend yield	1.2		%	1.5		%
Expected life in years	5.71			5.78
Expected volatility	32.2		%	36.0		%
Risk-free interest rate	1.0		%	0.9		%
Weighted average fair value	$	17.58		$	14.57