XML 43 R28.htm IDEA: XBRL DOCUMENT

SHARE-BASED AWARDS AND OPTIONS (Tables)

3 Months Ended

Mar. 31, 2018

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

Schedule of Allocation of Share-Based Compensation Costs by Plan

The following table summarizes share-based compensation expense and the related income tax benefit recognized for our share-based awards and stock options:



	Three Months Ended
	March 31, 2018		March 31, 2017

	(in thousands)

Share-based compensation expense	$	14,898	$	8,816
Income tax benefit	$	3,285	$	3,065

Schedule of Changes in Non-Vested Restricted Stock Awards Activity

The following table summarizes the changes in unvested restricted stock and performance awards for the three months ended March 31, 2018:



	Shares		Weighted-Average Grant-Date Fair Value
	(in thousands)

Unvested at December 31, 2017	1,226			$78.29
Granted	367		114.68
Vested	(168	)	77.15
Forfeited	(16	)	82.91
Unvested at March 31, 2018	1,409			$87.84

Schedule of Stock Option Activity

The following summarizes changes in stock option activity for the three months ended March 31, 2018:



	Options		Weighted-Average Exercise Price	Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
	(in thousands)			(years)	(in millions)

Outstanding at December 31, 2017	723		$47.79	6.4	$37.9
Granted	103		114.7
Exercised	(23	)	21.89
Outstanding at March 31, 2018	803		$57.11	6.8	$44.0

Options vested and exercisable at March 31, 2018	520		$40.66	5.6	$36.8

Schedule of Stock Option Valuation Assumptions

Fair value was estimated on the date of grant using the Black-Scholes valuation model with the following weighted-average assumptions:



	Three Months Ended
	March 31, 2018	March 31, 2017
Risk-free interest rate	2.60%	1.99%
Expected volatility	29%	30%
Dividend yield	0.04%	0.06%
Expected term (years)	5	5