Stock-Based Employee Compensation (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Feb. 28, 2018 |
Feb. 28, 2017 |
Feb. 29, 2016 |
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |||
| Total compensation cost recognized in our results of operations | $ 60.9 | $ 56.1 | $ 54.0 |
| Income tax benefit related thereto recognized in our results of operations | $ 13.5 | $ 18.5 | $ 17.8 |
| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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