v2.4.0.6

Stock and Stock-Based Incentive Plans (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended
	Nov. 30, 2012		Nov. 30, 2011		Feb. 29, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock Acquired, Repurchase Authorization	In October 2012, our board of directors authorized the repurchase of up to $300 million of our common stock.
Stock Repurchase Program, Authorized Amount	300
Stock Repurchase Program Expiration	Dec. 31, 2013
Treasury Stock, Restrictions	Shares repurchased are deemed authorized but unissued shares of common stock.
Stock Repurchased and Retired During Period, Shares	1,700,000
Treasury Stock Acquired, Average Cost Per Share	34.53
Stock Repurchase Program, Remaining Authorized Repurchase Amount	239.8
Expected term (in years)	4 years 8 months 12 days	[1]	4 years 7 months 6 days	[1]
Capitalized share based compensation	0		0
Options granted, Number of Shares	2,252,124		1,933,690
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options expiration term (in years)	10 years
Cash received as a result of stock option exercises	37.8		14.7
Total intrinsic value of options exercised	37.7		13.9
Related tax benefits	15.1		5.5
Weighted average fair values of grant for options per share	12.67		$ 13.84
Unrecognized compensation costs related to nonvested options/MSUs	37.5
Weighted average period, years	2 years 3 months 18 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	3 years
Stock units granted, number of units	0
Related tax benefits			10.9
Awards outstanding	0				0
Cash-Settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Cash Payout Per Cash Settled Restricted Stock Unit	18.0
Stock units granted, number of units	644,232		575,380
Related tax benefits	7.2
Awards outstanding	1,675,000				1,915,000
Restricted stock granted, weighted average grant date fair value	31.76		$ 32.69
Stock-Settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Conversion ratio, number of final trading days in vesting period	40 days
Stock units granted, number of units	348,551		292,946
Related tax benefits	9.5
Awards outstanding	906,000				950,000
Unrecognized compensation costs related to nonvested options/MSUs	17.2
Weighted average period, years	1 year 4 months 24 days
Restricted stock granted, weighted average grant date fair value	40.33		$ 45.58
Minimum [Member] | Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Minimum [Member] | Cash-Settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash payment per cash settled restricted stock unit	75.00%
Minimum [Member] | Stock-Settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
MSUs converted to common stock	0
Maximum [Member] | Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Maximum [Member] | Cash-Settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash payment per cash settled restricted stock unit	200.00%
Maximum [Member] | Stock-Settled Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
MSUs converted to common stock	2
[1] Represents the estimated number of years that options will be outstanding prior to exercise.

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- Definition

Cash payment equal to the fair market value of a share of common stock for each cash settled restricted stock unit granted on the vest date with a ceiling of 200% and a floor of 75% of the fair market value of a share of common stock on the grant date.

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Cash payout equal to the fair market value of a share of common stock for each cash settled restricted stock unit granted on the vest date with a ceiling of 200% and a floor of 75% of the fair market value of a share of common stock on the grant date.

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Market Stock Units Converted To Common Stock Conversion Ratio Number Of Final Trading Days In Vesting Period

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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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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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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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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 43

-Section B

-Paragraph 13

-Chapter 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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