Share-Based Compensation

6 Months Ended

Jun. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

A summary of share-based compensation is as follows:



	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2013		2014		2013		2014
Share-based compensation	$	5.7	$	8.7	$	11.5	$	15.2
Tax benefit	2.2		3.4		4.4		5.8

There was $79.3 million and $70.5 million of unrecognized share-based compensation as of December 31, 2013 and June 30, 2014, respectively, which will be recognized over a weighted-average period of approximately three years (assuming no forfeitures).

Stock Options

The following table summarizes the transactions of the Company's stock options:



	Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)
Unexercised options outstanding—December 31, 2013	3.0		$	77.71
Options granted	0.0		186.34
Options exercised	(0.4	)	66.27
Options forfeited	(0.0	)	81.50
Unexercised options outstanding—June 30, 2014	2.6		79.30		3.0
Exercisable at June 30, 2014	2.0		75.04		2.8

Restricted Stock

The following table summarizes the transactions of the Company's restricted stock units:



	Restricted Stock		Weighted Average Grant Date Value
Unvested units—December 31, 2013	0.5		$	176.38
Units granted	0.0		189.63
Units vested	(0.1	)	132.88
Units forfeited	(0.0)		122.72
Unvested units—June 30, 2014	0.4		183.39

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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