v2.4.0.8

Stock And Stock-Based Incentive Plans (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
	Aug. 31, 2013 Share Repurchase Program [Member]	Aug. 31, 2013 Share Repurchase Program [Member]	Aug. 31, 2013 Share Repurchase Program [Member] October 2012 Authorization [Member]	Aug. 31, 2013 Share Repurchase Program [Member] January 2013 Authorization [Member]	Aug. 31, 2013 Stock Compensation Plan [Member]	Aug. 31, 2012 Stock Compensation Plan [Member]	Aug. 31, 2013 Stock Option [Member]	Aug. 31, 2012 Stock Option [Member]	Aug. 31, 2013 Stock Option [Member] Minimum [Member]	Aug. 31, 2013 Stock Option [Member] Maximum [Member]	Aug. 31, 2013 Cash-Settled Restricted Stock Units [Member]	Aug. 31, 2012 Cash-Settled Restricted Stock Units [Member]	Aug. 31, 2013 Cash-Settled Restricted Stock Units [Member] Minimum [Member]	Aug. 31, 2013 Cash-Settled Restricted Stock Units [Member] Maximum [Member]	Aug. 31, 2013 Stock-Settled Restricted Stock Units [Member]	Aug. 31, 2012 Stock-Settled Restricted Stock Units [Member]	Aug. 31, 2013 Stock-Settled Restricted Stock Units [Member] Minimum [Member]	Aug. 31, 2013 Stock-Settled Restricted Stock Units [Member] Maximum [Member]
Stock and Stock-Based Incentive Plans
Share repurchase, authorized amount			$ 300	$ 500
Shares repurchased during the period	1,046,629	3,992,251
Share repurchase, average purchase price per share	$ 46.54	$ 43.40
Share repurchase, amount remaining for repurchase		414.8
Incentive stock option grants in period					0
Vesting period, in years									1 year	4 years	3 years				3 years
Years until expiration										10 years
Cash payment per RSU, percentage													75.00%	200.00%
MSUs converted to common stock																	0	2
Conversion ratio, number of final trading days in vesting period															40 days
Stock units granted, number of units or shares											541,819	644,232			236,675	346,551
Stock units granted, weighted average grant date fair value											$ 42.68	$ 31.76			$ 51.98	$ 40.36
Options granted, Number of Shares							1,601,699	2,233,624
Capitalized share-based compensation					0	0
Cash received as a result of stock option exercises							20.8	12.6
Total intrinsic value of options exercised							29.5	12.2
Related tax benefits							11.8	4.9			9.2	7.1			6.7	9.5
Options granted, weighted average grant date fair value							$ 15.59	$ 12.68
Unrecognized compensation costs related to nonvested options/MSUs							43.7								19.1
Weighted average period, years							2 years 6 months 0 days								1 year 6 months 0 days
Payment related to restricted stock units vested during the period											$ 23.0	$ 17.9

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Cash payment per cash settled restricted stock unit

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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Gross number of share options (or share units) granted during the period.

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Amount of a stock repurchase plan authorized by an entity's Board of Directors.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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