Stock-Based Employee Compensation (Details 2) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 29, 2016 |
Feb. 28, 2015 |
Feb. 28, 2014 |
|
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |||
| Fair value of stock options vested | $ 20.1 | $ 19.6 | $ 20.5 |
| Intrinsic value of stock options exercised | 514.9 | 185.8 | 235.5 |
| Tax benefit realized from stock options exercised | $ 193.5 | $ 62.2 | $ 61.4 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|