Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

Stock option awards as of December 31, 2013 and March 31, 2014, and changes during the three months ended March 31, 2014, were as follows:

	Shares Under Option (thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value (millions)
Outstanding at December 31, 2013		4,139		$	19.39		5.6	$	21.2
Exercised		(118	)		10.39
Cancelled/forfeited/expired		(109	)		27.92
Outstanding at March 31, 2014		3,912			19.43		5.5		14.8
Vested and expected to vest at March 31, 2014		3,885			19.47		5.4		14.7
Exercisable at March 31, 2014		1,395		$	9.05		5.9	$	12.4

Nonvested Restricted Stock Unit Awards

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

	Shares (thousands)			Weighted Average Grant Date Fair Value
Nonvested at December 31, 2013		2,495		$	11.97
Granted		582			16.82
Vested		(1,020	)		13.59
Forfeited		(3	)		16.43
Nonvested at March 31, 2014		2,054		$	12.53

Nonvested Performance Share Unit Awards

Nonvested performance share unit awards as of December 31, 2013 and March 31, 2014, and changes during the three months ended March 31, 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 March 31, 2014		1,037		$	11.48