Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2016

Share-based Compensation [Abstract]

Schedule of Stock Based Compensation Expense

Stock-based compensation expense consists of the following:

(In millions)	For the Three Months Ended   March 31,
	2016		2015
Restricted stock	$	0.7	$	1.0
Restricted stock units	1.4		3.1
Total	$	2.1	$	4.1

Summary of Restricted Stock Activity

A summary of the non-vested restricted stock activity is presented below:

Restricted Stock	Number of Shares		Weighted Average Grant-Date Fair Value Per Share
Non-vested as of December 31, 2015	182,311		$	109.17
Granted	7,657		196.96
Vested	(20,408	)	115.74
Forfeited	(211	)	188.48
Non-vested as of March 31, 2016	169,349		$	112.25

Summary of Restricted Stock Units Activity

A summary of the restricted stock unit activity is presented below:

Restricted Stock Units	Number of Restricted Stock Units		Weighted Average Grant-Date Fair Value Per Share
Outstanding as of December 31, 2015	859,419		$	61.73
Granted	250		178.96
Converted	(404,096	)	16.73
Outstanding as of March 31, 2016	455,573		$	101.70