Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Stock-Based Compensation

Schedule of compensation expense for all share-based compensation plans

	Three Months Ended March 31,
(in millions, except per share amounts)	2012		2011
Pre-tax compensation expense	$	1.8	$	0.9
After-tax compensation expense	$	1.2	$	0.6
Impact on diluted EPS	$	0.02	$	0.01

Schedule of weighted-average assumptions for stock options

	2012			2011
Expected dividend yield	1.5		%	1.7		%
Expected life in years	5.78			5.76
Expected volatility	36.0		%	32.0		%
Risk-free interest rate	0.9		%	2.2		%
Weighted average fair value	$	14.57		$	10.61