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Stock-Based Compensation Plans (Details 3) (Employee Stock Option [Member], USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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May 31, 2012
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May 31, 2011
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May 31, 2010
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Employee Stock Option [Member]
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| Stock based compensation, stock option plan other information | |||
| Total intrinsic value of stock options exercised | $ 0.8 | $ 1.9 | $ 1.4 |
| Total grant date fair value of stock options vested | $ 10.4 | $ 20.0 | $ 19.0 |
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- Details
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- Definition
Share based compensation arrangement by share based payment award options vested in period fair value. No definition available.
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- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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