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Stock-Based Compensation Plans (Details 2) (Employee Stock Option [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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May 31, 2014
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May 31, 2013
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May 31, 2012
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Employee Stock Option [Member]
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| Stock options, other information | |||
| Total intrinsic value of stock options exercised | $ 18.9 | $ 7.8 | $ 0.8 |
| Total grant-date fair value of stock options vested | $ 3.0 | $ 3.0 | $ 10.4 |
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- Details
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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