Stock And Stock-Based Incentive Plans (Outstanding Stock Options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Number of Shares	10,018
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 27.02
Options Exercisable, Number of Shares	5,883
Options Exercisable, Weighted Average Exercise Price	$ 21.06
$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	1,512
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 11.43
Options Exercisable, Number of Shares	1,512
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	1,550
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	1 year
Options Outstanding, Weighted Average Exercise Price	$ 15.66
Options Exercisable, Number of Shares	1,550
Options Exercisable, Weighted Average Exercise Price	$ 15.66
$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	1,580
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 25.19
Options Exercisable, Number of Shares	1,222
Options Exercisable, Weighted Average Exercise Price	$ 25.13
$25.67 To $32.05 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, lower range	$ 25.67
Range of Exercise Prices, upper range	$ 32.05
Options Outstanding, Number of Shares	2,118
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years
Options Outstanding, Weighted Average Exercise Price	$ 31.62
Options Exercisable, Number of Shares	654
Options Exercisable, Weighted Average Exercise Price	$ 31.45
$32.69 To $49.25 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, lower range	$ 32.69
Range of Exercise Prices, upper range	$ 49.25
Options Outstanding, Number of Shares	3,258
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	5 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 37.56
Options Exercisable, Number of Shares	945
Options Exercisable, Weighted Average Exercise Price	$ 32.84
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	3 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 27.02	$ 23.00