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Equity Compensation Plans (Tables)

6 Months Ended

Nov. 30, 2018

Stock Option Activity

A summary of stock option activity during the six months ended November 30, 2018 follows:

		Shares				Weighted- Average Exercise Price
Options outstanding June 1, 2018			2,497,124			$	42.63
Granted			525,750				62.93
Exercised			(340,023	)			29.49
Forfeited			(91,620	)			45.87
Options outstanding November 30, 2018			2,591,231				48.40

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 2019				FY 2018
Risk-free interest rate			2.6	%			1.6	%
Expected dividend yield			0.0	%			0.0	%
Expected stock price volatility			27.0	%			27.2	%
Expected option life			3.5 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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