SHARE-BASED AWARDS AND OPTIONS (Tables)

7 Months Ended

Dec. 31, 2016

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

Schedule of Compensation Cost , 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:



	Seven Months Ended December 31,		Year Ended May 31,
	2016		2016		2015		2014

	(in thousands)
Share-based compensation expense	$	18,707	$	30,809	$	21,056	$	29,793
Income tax benefit	$	6,582	$	9,879	$	6,907	$	7,126

Schedule of Changes in Non-Vested Restricted Stock Awards Activity

The following table summarizes the changes in unvested share-based awards for the 2016 fiscal transition period and for the fiscal years ended May 31, 2016, 2015 and 2014 (shares in thousands):



	Shares		Weighted-Average Grant-Date Fair Value

Unvested at May 31, 2013	2,192			$22.00
Granted	1,088		23.55
Vested	(1,286	)	22.31
Forfeited	(240	)	22.40
Unvested at May 31, 2014	1,754		22.72
Granted	954		36.21
Vested	(648	)	23.17
Forfeited	(212	)	27.03
Unvested at May 31, 2015	1,848		28.97
Granted	461		57.04
Vested	(633	)	27.55
Forfeited	(70	)	34.69
Unvested at May 31, 2016	1,606		37.25
Granted	348		74.26
Vested	(639	)	31.38
Forfeited	(52	)	45.27
Unvested at December 31, 2016	1,263			$49.55

Schedule of Share-based Compensation, Stock Options, Activity

The following summarizes changes in unvested stock option activity for the 2016 fiscal transition period and the fiscal years ended May 31, 2016, 2015 and 2014:



	Options		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
	(in thousands)				(years)	(in millions)
Outstanding at May 31, 2013	3,530			$17.55	3.5		$23.9
Granted	—		—
Forfeited	(130	)	19.69
Exercised	(1,868	)	15.20			24.9
Outstanding at May 31, 2014	1,532		20.36		3.8	21.3
Granted	306		35.78
Forfeited	(48	)	27.42
Exercised	(896	)	20.15			16.6
Outstanding at May 31, 2015	894		25.47		5.2	23.9
Granted	145		55.92
Forfeited	(8	)	16.10
Exercised	(220	)	22.46			9.4
Outstanding at May 31, 2016	811		31.81		5.8	36.8
Granted	73		74.66
Forfeited	(1	)	22.93
Exercised	(124	)	22.26			6.5
Outstanding at December 31, 2016	759			$37.51	6.0		$24.5

Options vested and exercisable at December 31, 2016	502			$28.88	4.7		$20.3

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

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



	Seven Months Ended December 31,		Year Ended May 31,
	2016		2016		2015
Risk-free interest rate	1.05	%	1.62	%	1.57	%
Expected volatility	31.58	%	28.65	%	23.65	%
Dividend yield	0.06	%	0.10	%	0.13	%
Expected term (years)	5		5		5