Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Stock-Based Compensation

Schedule of stock-based compensation expense by type of award

	Year Ended December 31,
(In millions, except per share data)	2012		2011		2010
Non-qualified stock options	$	4.5	$	4.1	$	3.9
Restricted stock, service based (“RSUs”)	6.5		5.0		4.9
Restricted stock, performance based (“PRSUs”)	4.6		4.7		3.5
Employee stock purchase plan	0.2		0.1		0.1
Stock-based compensation expense	$	15.8	$	13.9	$	12.4
Tax benefit from stock options exercised during the period	$	6.8	$	8.5	$	3.9

Summary of option activity

	Number of Options (In millions)		Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Life (in years)
Outstanding at December 31, 2009	4.1		$	10.67	5.06
Options granted	0.9		$	10.92
Options exercised	(0.4	)	$	8.54
Options expired or forfeited	(0.1	)	$	14.68
Outstanding at December 31, 2010	4.5		$	10.84	5.16
Options granted	0.6		$	19.19
Options exercised	(1.6	)	$	8.17
Options expired or forfeited	(0.1	)	$	12.93
Outstanding at December 31, 2011	3.4		$	13.55	6.45
Options granted	0.5		$	25.03
Options exercised	(0.6	)	$	10.41
Options expired or forfeited	—		$	21.82
Outstanding at December 31, 2012	3.3		$	15.67	6.26

Schedule of other stock option statistics

	Year Ended December 31,
(In millions, except weighted average exercise price)	2012		2011
Aggregate intrinsic value of outstanding options	$	37.4	$	38.0
Aggregate intrinsic value of exercisable options	$	29.5	$	21.9
Total intrinsic value of options exercised	$	9.1	$	22.7
Total number of options exercisable	2.2		2.1
Weighted average exercise price of options exercisable	$	13.57	$	13.38
Total unrecognized compensation cost on nonvested options (a)	$	2.1	$	2.1

(a) Unrecognized compensation cost relates to nonvested stock options and is expected to be recognized over the remaining vesting period ranging from one year to three years.

Summary of information about outstanding and exercisable stock options

		Options Outstanding				Options Exercisable
Range of Exercise Prices		Number of Options Outstanding (a)	Weighted Average Remaining Life (in Years)	Weighted Average Exercise Price		Number of Options Exercisable (a)	Weighted Average Exercise Price
$	6.68 – 10.90	1.4	6.30	$	9.35	1.1	$	8.98
$	14.51 – 21.11	1.3	5.66	$	18.44	0.9	$	17.71
$	22.00 – 25.84	0.6	7.41	$	24.18	0.2	$	22.03
$	6.68 – 25.84	3.3	6.26	$	15.67	2.2	$	13.57

(a) in millions

Schedule of assumptions used in determining the estimated the fair value of stock options

	2012			2011			2010
Risk-free interest rate	0.83		%	1.88		%	2.40		%
Expected option life (in years) Executive	5.44			4.84			5.51
Expected option life (in years) Non-Executive	4.45			4.71			4.40
Dividend yield	—		%	—		%	—		%
Volatility	45.76		%	44.08		%	49.20		%
Weighted-average fair value per option granted	$	10.24		$	7.65		$	4.95

Summary of the company's service based RSU activity

	Number of RSUs (In millions)		Weighted- Average Grant Date Fair Value
Outstanding at December 31, 2009	0.9		$	12.21
RSUs granted	0.4		$	11.41
RSUs issued	(0.3	)	$	12.91
Outstanding at December 31, 2010	1.0		$	11.76
RSUs granted	0.3		$	20.63
RSUs issued	(0.4	)	$	12.51
Outstanding at December 31, 2011	0.9		$	14.49
RSUs granted	0.3		$	25.26
RSUs issued	(0.4	)	$	12.10
Outstanding at December 31, 2012	0.8		$	18.90

Summary of the company's PRSU activity

	Number of PRSUs (In millions)		Weighted- Average Grant Date Fair Value
Outstanding at December 31, 2009	0.5		$	11.18
PRSUs granted	0.3		$	10.95
PRSUs issued	(0.1	)	$	17.03
PRSUs forfeited	(0.1	)	$	7.37
Outstanding at December 31, 2010	0.6		$	9.77
PRSUs granted	0.1		$	19.02
Outstanding at December 31, 2011	0.7		$	11.53
PRSUs granted	0.1		$	25.03
PRSUs additional performance shares	0.2		$	8.00
PRSUs issued	(0.5	)	$	8.28
Outstanding at December 31, 2012	0.5		$	16.93