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Stock And Stock-Based Incentive Plans (Outstanding Stock Options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 6 Months Ended |
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Aug. 31, 2014 | Feb. 28, 2014
$11.43 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, lower range | $ 11.43 |
Options Outstanding, Number of Shares | 554 |
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 1 year 7 months 6 days |
Options Outstanding, Weighted Average Exercise Price | $ 11.43 |
Options Exercisable, Number of Shares | 554 |
Options Exercisable, Weighted Average Exercise Price | $ 11.43 |
$13.19 To $19.82 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, lower range | $ 13.19 |
Range of Exercise Prices, upper range | $ 19.82 |
Options Outstanding, Number of Shares | 488 |
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 0 years 10 months 24 days |
Options Outstanding, Weighted Average Exercise Price | $ 15.57 |
Options Exercisable, Number of Shares | 488 |
Options Exercisable, Weighted Average Exercise Price | $ 15.57 |
$19.98 To $25.39 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, lower range | $ 19.98 |
Range of Exercise Prices, upper range | $ 25.39 |
Options Outstanding, Number of Shares | 1,288 |
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 2 years 8 months 12 days |
Options Outstanding, Weighted Average Exercise Price | $ 25.19 |
Options Exercisable, Number of Shares | 1,288 |
Options Exercisable, Weighted Average Exercise Price | $ 25.19 |
$28.81 To $32.69 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, lower range | $ 28.81 |
Range of Exercise Prices, upper range | $ 32.69 |
Options Outstanding, Number of Shares | 3,511 |
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 4 years 2 months 12 days |
Options Outstanding, Weighted Average Exercise Price | $ 32.12 |
Options Exercisable, Number of Shares | 2,181 |
Options Exercisable, Weighted Average Exercise Price | $ 32.22 |
$33.11 To $49.25 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Range of Exercise Prices, lower range | $ 33.11 |
Range of Exercise Prices, upper range | $ 49.25 |
Options Outstanding, Number of Shares | 3,573 |
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 6 years 1 month 6 days |
Options Outstanding, Weighted Average Exercise Price | $ 43.89 |
Options Exercisable, Number of Shares | 468 |
Options Exercisable, Weighted Average Exercise Price | $ 42.21 |
Stock Option [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options Outstanding, Number of Shares | 9,414 |
Options Outstanding, Weighted Average Remaining Contractual Life (Years) | 4 years 4 months 24 days |
Options Outstanding, Weighted Average Exercise Price | $ 33.56 | $ 27.02
Options Exercisable, Number of Shares | 4,979 |
Options Exercisable, Weighted Average Exercise Price | $ 27.40 |

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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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