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Stock And Stock-Based Incentive Plans (Cash-Settled Restricted Stock Unit Activity) (Details) (Cash-Settled Restricted Stock Units [Member], USD $)
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3 Months Ended | |
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May 31, 2014
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May 31, 2013
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Cash-Settled Restricted Stock Units [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Outstanding at beginning of year, Number of Shares or Units | 1,531,000 | |
| Stock units granted, Number of Units | 587,186 | 541,741 |
| Stock units vested and converted, Number of Units | (458,000) | |
| Stock units cancelled, Number of Units | (29,000) | |
| Outstanding at end of year, number of shares or Units | 1,631,000 | |
| Outstanding as of February 28, 2014, Weighted Average Grant Date Fair Value | $ 35.68 | |
| Stock units granted, weighted average grant date fair value | $ 44.96 | $ 42.68 |
| Stock units vested and converted, Weighted Average Grant Date Fair Value | $ 32.71 | |
| Stock units cancelled, Weighted Average Grant Date Fair Value | $ 37.81 | |
| Outstanding as of May 31, 2014, Weighted Average Grant Date Fair Value | $ 39.82 | |