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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Stock-Based Compensation

Summary of the company's stock option activity

A summary of the company’s stock option activity is as follows (in millions, except weighted average exercise price per share):

		Shares			Weighted Average Exercise Price				Aggregate Intrinsic Value
Options outstanding as of January 1, 2013		7.4			$	15.27
Granted		0.4			18.14
Exercised		(0.6	)		8.35
Cancelled		(0.2	)		16.66
Options outstanding as of December 31, 2013		7.0			$	16.00
Granted		0.3			29.08
Exercised		(1.7	)		10.92
Cancelled		—			27.07
Options outstanding as of December 31, 2014		5.6			$	18.23			$	36.3
Options exercisable as of:
December 31, 2014		4.2			$	17.86			$	29.8

Schedule of the options outstanding and exercisable by range of exercise prices

The following table shows the options outstanding and exercisable by range of exercise prices at December 31, 2014 (in millions, except range of exercise price per share, weighted average remaining contractual life and weighted average exercise price):

		Outstanding			Weighted Average Remaining Contractual		Weighted Average				Exercisable			Weighted Average
Range of Exercise Price per Share		Options			Life (Years)		Exercise Price				Options			Exercise Price
$4.41 - $9.59		0.7			4.0		$	4.41			0.7			$	4.41
$9.60 - $10.21		0.2			0.3		10.13				0.2			10.13
$10.22 - $18.13		1.7			5.4		12.90				1.2			12.44
$18.14 - $26.09		1.2			6.0		19.17				0.8			19.38
$26.10- $29.06		0.5			1.3		26.11				0.5			26.11
$29.07 - $30.46		0.8			5.2		29.32				0.4			29.52
$30.47 - $36.03		0.1			9.2		30.47				—			—
$36.04 - $47.84		0.4			2.9		38.88				0.4			38.88
		5.6			4.6		$	18.23			4.2			$	17.86

Schedule of the assumptions used to estimate the fair value of each option grant

The fair value of each option grant was estimated at the date of grant using the Black-Scholes option-pricing method with the following assumptions:

		2014			2013			2012
Expected Life (years)		6.0			6.0			6.0
Risk-free Interest rate		1.9	%		1.1	%		1.1	%
Expected volatility		55.0	%		56.0	%		55.0	%
Expected dividend yield		0.4	%		0.6	%		0.6	%

Restricted Stock [Member]

Stock-Based Compensation

Schedule of nonvested share activity

A summary of activity for restricted stock awards for the year ended December 31, 2014 is as follows (in millions except weighted average grant date fair value):

		Shares			Weighted Average Grant Date Fair Value
Unvested as of January 1, 2014		0.5			$	18.25
Granted		—			—
Vested		(0.3	)		19.58
Cancelled		—			17.21
Unvested as of December 31, 2014		0.2			$	16.58

Performance shares

Stock-Based Compensation

Schedule of nonvested share activity

A summary of activity for restricted stock units for the year ended December 31, 2014 is as follows (in millions except weighted average grant date fair value):

		Shares			Weighted Average Grant Date Fair Value
Unvested as of January 1, 2014		0.7			$	18.41
Granted		0.4			34.57
Vested*		(0.3	)		17.79
Cancelled		—			21.92
Unvested as of December 31, 2014		0.8			$	27.09

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