The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (e)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Summary of Stock Options Outstanding (Detail) - $ / shares	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021	May 31, 2020
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number	4,222,000	3,244,000	2,957,000	4,324,000
Options Outstanding, Average Contractual Life	3 years 9 months 18 days
Options Outstanding, Weighted-Average Exercise Price	$ 25.56	$ 32.13	$ 27.98	$ 27.98
Options Exercisable, Number	1,401,000	1,191,000	643,000	972,000
Options Exercisable, Weighted Average Exercise Price	$ 31.54	$ 30.24	$ 28.10
$12.20 - $20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise price, minimum	12.20
Range of Exercise price, maximum	$ 20.00
Options Outstanding, Number	1,585,000
Options Outstanding, Average Contractual Life	6 years 3 months 18 days
Options Outstanding, Weighted-Average Exercise Price	$ 13.63
Options Exercisable, Number	27,000
Options Exercisable, Weighted Average Exercise Price	$ 15.95
$20.01 - $28.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise price, minimum	20.01
Range of Exercise price, maximum	$ 28.00
Options Outstanding, Number	138,000
Options Outstanding, Average Contractual Life	6 years 8 months 12 days
Options Outstanding, Weighted-Average Exercise Price	$ 25.11
Options Exercisable, Number	90,000
Options Exercisable, Weighted Average Exercise Price	$ 23.93
$28.01 - $36.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise price, minimum	28.01
Range of Exercise price, maximum	$ 36.00
Options Outstanding, Number	2,124,000
Options Outstanding, Average Contractual Life	1 year 9 months 18 days
Options Outstanding, Weighted-Average Exercise Price	$ 31.77
Options Exercisable, Number	1,205,000
Options Exercisable, Weighted Average Exercise Price	$ 31.84
$36.01 - $42.15
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise price, minimum	36.01
Range of Exercise price, maximum	$ 42.15
Options Outstanding, Number	375,000
Options Outstanding, Average Contractual Life	3 years 4 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 40.94
Options Exercisable, Number	79,000
Options Exercisable, Weighted Average Exercise Price	$ 40.99