Stock-Based Compensation Plans (Other Information Pertaining to LTIP Performance-Based Stock Options) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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May 31, 2021 |
May 31, 2020 |
May 31, 2019 |
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| LTIP Performance-Based Stock Options [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Total intrinsic value of stock options exercised | $ 26.3 | $ 23.0 | $ 8.2 |
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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. No definition available.
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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