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Stock And Stock-Based Incentive Plans (Stock Option Activity) (Details) (Stock Option [Member], USD $)
In Thousands, except Share data, unless otherwise specified
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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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Stock Option [Member]
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| Outstanding as of February 28, 2014, Number of Shares |
10,018,000 |
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| Options granted, Number of Shares |
2,003,238 |
1,569,117 |
| Options exercised, Number of Shares |
(374,000) |
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| Options forfeited or expired, Number of Shares |
(12,000) |
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| Outstanding as of May 31, 2014, Number of Shares |
11,635,000 |
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| Exercisable as of May 31, 2014, Number of Shares |
7,129,000 |
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| Outstanding as of February 28, 2014, Weighted Average Exercise Price |
$ 27.02 |
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| Options granted, Weighted Average Exercise Price |
$ 44.96 |
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| Options exercised, Weighted Average Exercise Price |
$ 18.11 |
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| Options forfeited or expired, Weighted Average Exercise Price |
$ 23.64 |
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| Outstanding as of May 31, 2014, Weighted Average Exercise Price |
$ 30.40 |
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| Exercisable as of May 31, 2014, Weighted Average Exercise Price |
$ 24.01 |
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| Outstanding as of May 31, 2014, Weighted Average Remaining Contractual Life (Years) |
4 years 1 month 6 days |
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| Exercisable as of May 31, 2014, Weighted Average Remaining Contractual Life (Years) |
2 years 10 months 24 days |
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| Outstanding as of May 31, 2014, Aggregate Intrinsic Value |
$ 163,230 |
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| Exercisable as of May 31, 2014, Aggregate Intrinsic Value |
$ 144,745 |
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