Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2015

Share-based Compensation [Abstract]

Summary Of Restricted Stock Activity

Restricted Stock	Number of Shares		Weighted Average Grant-Date Fair Value Per Share
Non-vested as of December 31, 2014	190,400		$	107.51
Granted	4,860		183.30
Vested	(12,113	)	110.46
Forfeited	(836	)	143.25
Non-vested as of December 31, 2015	182,311		$	109.17

Summary Of Restricted Stock Units Activity

A summary of the restricted stock unit activity under the Incentive Plan for the year ended December 31, 2015, is presented below:

Restricted Stock Units	Number of Restricted Stock Units		Weighted Average Grant-Date Fair Value Per Share		Aggregate Intrinsic Value (2) (in millions)		Weighted Average Remaining Contractual Term (in years)
Outstanding as of December 31, 2014	862,682		$	61.93
Granted	1,500		139.00
Converted	(1,348	)	119.33
Forfeited	(3,415	)	122.81
Outstanding as of December 31, 2015 (1)	859,419		$	61.73	$	183.9	3.9
Vested as of December 31, 2015	532,160		$	33.74	$	113.9	1.3

(1) No RSUs outstanding at December 31, 2015 were convertible to shares of common stock.

(2) The intrinsic value of RSUs is measured by applying the closing stock price as of December 31, 2015 to the applicable number of units.

Schedule Of Stock Based Compensation Expense

Stock-based compensation expense consists of the following:

(In millions)	For the Years Ended December 31,
	2015		2014		2013
Restricted stock	$	3.2	$	3.3	$	3.0
Restricted stock units	9.2		12.0		5.5
Total	$	12.4	$	15.3	$	8.5

Schedule Of Future Share-Based Compensation Cost

over a weighted average period of 2.8 years, as follows:

(In millions)
For the Years Ended December 31,	Restricted Stock Units		Restricted Stock		Total Projected Expense
2016	$	4.5	$	2.2	$	6.7
2017	2.5		1.6		4.1
2018	1.7		1.3		3.0
2019	1.1		1.2		2.3
2020	0.8		1.1		1.9
Thereafter	0.5		3.4		3.9
Total	$	11.1	$	10.8	$	21.9