Summary of Option and Share-Based Payment Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands	12 Months Ended
May 31, 2024	May 31, 2023	May 31, 2022
Weighted Average Exercise Price
Beginning balance	$ 68.19
Options granted	93.51
Options exercised	56.42
Ending balance	75.54	$ 68.19
Exercisable at May 31, 2023	$ 67.98
Number of Shares Under Option
Beginning balance	2,288
Options granted	300
Options exercised	(598)
Ending balance	1,990	2,288
Exercisable at May 31, 2023	1,180
Stock Appreciation Rights (SARs)
Number of Shares Under Option
Weighted-average grant-date fair value per SAR	$ 24.04	$ 18.09	$ 16.72
Fair value of SARS vested	$ 15,280	$ 14,190	$ 13,490
Intrinsic value of options exercised	12,370	11,260	13,770
Tax benefit from options exercised	$ 6,049,000	$ 3,292,000	$ 88,000

Amount of tax benefit from exercise of option under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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