|
Stock-Based Compensation Plans (Details 9) (Unearned Performance Shares [Member], USD $)
In Millions, except Per Share data, unless otherwise specified |
12 Months Ended |
|---|---|
|
May 31, 2013
|
|
|
Unearned Performance Shares [Member]
|
|
| Non-vested/unearned shares activity | |
| Nonvested/unearned shares outstanding, Beginning balance | 0.2 |
| Nonvested/unearned shares, Beginning balance, Weighted-average grant-date fair value per share | $ 26.83 |
| Granted | 0.2 |
| Granted, Weighted-average grant-date fair value per share | $ 29.10 |
| Forfeited | 0 |
| Forfeited, Weighted-average grant-date fair value per share | $ 26.74 |
| Nonvested/unearned shares, Ending Balance | 0.4 |
| Nonvested/unearned shares, Ending balance, Weighted-average grant-date fair value per share | $ 27.89 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made 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
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|