Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2014

Stock option awards as of December 31, 2013 and June 30, 2014, and changes during the six months ended June 30, 2014, were as follows:

	Shares Under Option (thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding at December 31, 2013		4,139		$	19.39		5.6	$	21.2
Exercised		(125	)		10.56
Cancelled/forfeited/expired		(139	)		27.70
Outstanding at June 30, 2014		3,875			19.38		5.2		13.0
Vested and expected to vest at June 30, 2014		3,848			19.43		5.2		12.9
Exercisable at June 30, 2014		1,381		$	9.00		5.6	$	11.0

Nonvested Restricted Stock Unit Awards

Nonvested restricted stock unit awards as of December 31, 2013 and June 30, 2014, and changes during the six months ended June 30, 2014, were as follows:

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2013		2,495		$	11.97
Granted		729			16.53
Vested		(1,168	)		13.82
Forfeited		(4	)		16.29
Nonvested at June 30, 2014		2,052		$	12.53

Nonvested Performance Share Unit Awards

Nonvested performance share unit awards as of December 31, 2013 and June 30, 2014, and changes during the six months ended June 30, 2014, were as follows:

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2013		953		$	10.81
Granted		319			16.46
Expired		(114	)		15.54
Vested		(121	)		15.54
Nonvested at June 30, 2014		1,037		$	11.48