Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Summary of Restricted Stock and Performance Unit Award Activity

The following table presents restricted stock and performance unit award activity for the nine months ended September 30, 2015:



	Restricted Stock				Performance Units
	Shares		Weighted Average Grant- Date Fair Value		Shares	Weighted Average Grant- Date Fair Value
Outstanding at January 1, 2015	1,184,299		$	41.71	127,489	$	58.25
Granted	218,957		65.16		53,102	65.03
Vested	(349,903	)	29.41		—	—
Forfeitures	(5,397	)	66.32		—	—
Outstanding at September 30, 2015	1,047,956		$	49.97	180,591	$	60.24

Compensation Expense for Restricted Stock and Performance Units

Compensation expense for share-based awards recognized in the Consolidated Statements of Income, net of forfeitures, was as follows (dollars in millions):



	Three Months Ended September 30						Nine Months Ended September 30
	2015			2014			2015			2014
Restricted stock	$	3.7		$	3.5		$	11.7		$	10.5
Performance units	0.9			0.6			2.0			1.1
Total share-based compensation expense	4.6			4.1			13.7			11.6
Income tax benefit	(1.8		)	(1.6		)	(5.3		)	(4.5		)
Share-based compensation expense, net of tax benefit	$	2.8		$	2.5		$	8.4		$	7.1

Unrecognized Compensation For Restricted Stock and Performance Units

The unrecognized compensation expense for all share-based awards at September 30, 2015, was as follows (dollars in millions):



	September 30, 2015
	Unrecognized Compensation Expense		Remaining Weighted Average Recognition Period (in years)
Restricted stock	$	30.2	2.9
Performance units	7.1		3.0
Total unrecognized share-based compensation expense	$	37.3	2.9