Stock-Based Compensation Plans (Other Information Pertaining to RSUs) (Details) - Restricted Stock Units [Member] - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||
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May 31, 2017 |
May 31, 2016 |
May 31, 2015 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Weighted-average grant-date fair value per share | $ 53.76 | $ 42.60 | $ 36.64 |
| Total intrinsic value of RSUs vested | $ 32.3 | $ 25.9 | $ 21.7 |
| Total grant-date fair value of RSUs vested | $ 19.3 | $ 17.3 | $ 14.8 |
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options. No definition available.
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- Details
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