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Equity Compensation Plans (Tables)

9 Months Ended

Feb. 28, 2018

Stock Option Activity

A summary of stock option activity during the nine months ended February 28, 2018 follows:

						Weighted-
						Average
		Shares				Exercise Price
		(in thousands)
Options outstanding June 1, 2017			2,708			$	32.88
Granted			819				59.26
Exercised			(668	)			28.23
Forfeited			(144	)			37.31
Options outstanding February 28, 2018			2,715				41.75

Fair Value of Stock Options Granted, Estimated using Weighted-Average Assumptions

The fair value of stock options granted was estimated using the following weighted-average assumptions:

		FY 2018		FY 2017
Risk-free interest rate		1.6%		1.2%
Expected dividend yield		0.0%		0.0%
Expected stock price volatility		27.7%		35.2%
Expected option life		4.0 years		4.0 years

X

- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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