Share based compensation arrangement by share based payment award option and other than option exercisable number.

No definition available.

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- Definition

Share based compensation arrangement by share based payment award option and other than option exercisable weighted average exercise price.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award options and other than option outstanding number.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award options and other than option outstanding weighted average exercise price.

+ References

No definition available.

+ Details

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- Definition

Share-based Compensation, Shares Authorized under Stock Option Plans And Other Than Option, Exercise Price Range, Upper Range Limit

+ References

No definition available.

+ Details

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- Definition

Share-based Compensation, Shares Authorized under Stock Option Plans And Other Than Stock Option, Exercise Price Range, Lower Range Limit

+ References

No definition available.

+ Details

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- Definition

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price

+ References

No definition available.

+ Details

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- Definition

Shared-based Compesantion Arrangement by Share-based Payment Award, Options And Equity Instruments Other Than Options, Exercise Price Range, Weigthed Average Remaining Contractual Term

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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Stock Compensation - Schedule By Exercise Price Range (Details) - $ / shares	12 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Options/ SAR’s (shares)	170,139	312,748	376,982	396,174
Weighted Average Exercise Price, Outstanding (usd per share)	$ 42.02	$ 34.23	$ 31.27	$ 26.64
Options / SAR’s Currently Exercisable (shares)	126,975	217,961	204,107
Weighted Average Exercise Price, Exercisable (usd per share)	$ 41.27	$ 29.83	$ 21.55
$9.06 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 20.91
Total Options/ SAR’s (shares)	9,954
Average Remaining Life	1 year
Weighted Average Exercise Price, Outstanding (usd per share)	$ 20.91
Options / SAR’s Currently Exercisable (shares)	9,954
Weighted Average Exercise Price, Exercisable (usd per share)	$ 20.91
$15.84 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 25.67
Total Options/ SAR’s (shares)	9,538
Average Remaining Life	2 years
Weighted Average Exercise Price, Outstanding (usd per share)	$ 25.67
Options / SAR’s Currently Exercisable (shares)	9,538
Weighted Average Exercise Price, Exercisable (usd per share)	$ 25.67
$20.91 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 39.65
Total Options/ SAR’s (shares)	950
Average Remaining Life	3 years 6 months 6 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 39.65
Options / SAR’s Currently Exercisable (shares)	950
Weighted Average Exercise Price, Exercisable (usd per share)	$ 39.65
$25.67 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 43.92
Total Options/ SAR’s (shares)	89,180
Average Remaining Life	4 years 3 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 43.92
Options / SAR’s Currently Exercisable (shares)	56,016
Weighted Average Exercise Price, Exercisable (usd per share)	$ 43.92
$45.36 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 45.26
Total Options/ SAR’s (shares)	40,000
Average Remaining Life	3 years 8 months 4 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 45.26
Options / SAR’s Currently Exercisable (shares)	30,000
Weighted Average Exercise Price, Exercisable (usd per share)	$ 45.26
$45.26 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 45.36
Total Options/ SAR’s (shares)	19,758
Average Remaining Life	3 years
Weighted Average Exercise Price, Outstanding (usd per share)	$ 45.36
Options / SAR’s Currently Exercisable (shares)	19,758
Weighted Average Exercise Price, Exercisable (usd per share)	$ 45.36
$42.08 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices (usd per share)	$ 46.43
Total Options/ SAR’s (shares)	759
Average Remaining Life	3 years 8 months 18 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 46.43
Options / SAR’s Currently Exercisable (shares)	759
Weighted Average Exercise Price, Exercisable (usd per share)	$ 46.43
$9.06 - $45.36 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower limit (usd per share)		9.06
Exercise price range, upper limit (usd per share)		$ 46.43
$9.06 - $45.36 [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Options/ SAR’s (shares)	170,139
Average Remaining Life	3 years 6 months 7 days
Weighted Average Exercise Price, Outstanding (usd per share)	$ 42.02
Options / SAR’s Currently Exercisable (shares)	126,975
Weighted Average Exercise Price, Exercisable (usd per share)	$ 41.27