Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Stock-Based Compensation

Schedule of compensation expense for all share-based compensation plans

	Years Ended December 31
(in millions, except per share amounts)	2011		2010		2009
Pre-tax compensation expense	$	6.6	$	5.3	$	7.2
After-tax compensation expense	$	4.1	$	3.6	$	4.5
Impact on diluted EPS	$	0.07	$	0.06	$	0.07

Schedule of weighted-average assumptions for stock options

	Years Ended December 31
	2011			2010			2009
Expected dividend yield		1.7	%		1.9	%		3.2	%
Expected life in years		5.76			5.75			5.64
Expected volatility		32.0	%		32.7	%		36.4	%
Risk-free interest rate		2.2	%		2.7	%		2.0	%
Weighted average fair value	$	10.61		$	9.70		$	4.99

Schedule of stock option activity under the Company's stock option awards

	Number of Shares			Weighted Average Exercise Price
Outstanding at December 31, 2008		2,814,003		$	33.91
Options granted		1,602,895			19.60
Options exercised		(75,718	)		18.42
Option expired		(20,000	)		22.78
Options forfeited		(165,610	)		24.78
Outstanding at December 31, 2009		4,155,570		$	29.09
Options granted		610,020			34.05
Options exercised		(325,883	)		24.68
Options forfeited		(204,304	)		24.32
Outstanding at December 31, 2010		4,235,403		$	30.38
Options granted		637,255			38.23
Options exercised		(552,639	)		27.61
Options forfeited		(227,404	)		29.13
Outstanding at December 31, 2011		4,092,615		$	32.05

Schedule of activity related to restricted stock

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2008		473,950		$	37.06
Shares granted		275,005			18.57
Shares vested		(95,410	)		36.92
Shares forfeited		(27,975	)		34.50
Outstanding at December 31, 2009		625,570		$	29.07
Shares granted		101,785			34.21
Shares vested		(94,790	)		40.87
Shares forfeited		(7,925	)		30.59
Outstanding at December 31, 2010		624,640		$	28.10
Shares granted		111,685			38.31
Shares vested		(188,195	)		34.80
Shares forfeited		(19,555	)		20.33
Outstanding at December 31, 2011		528,575		$	27.83

Schedule of activity related to performance shares

	Number of Shares
Outstanding at December 31, 2009		—
Shares granted		101,785
Shares forfeited		(2,950	)
Outstanding at December 31, 2010		98,835
Shares granted		109,075
Shares forfeited		(10,255	)
Outstanding at December 31, 2011		197,655