Share Based Compensation (Textuals) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Apr. 28, 2012	Apr. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value	$ 1.2	$ 2.2
Share Based Compensation (Textuals) [Abstract]
Share-based compensation expense	12.8	10.9
Effects of adjustments for Forfeitures		1.7
Number of primary share based compensation plans	2
Number of other share based compensation plans	4
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost, net of estimated forfeitures	52.4
Unrecognized compensation cost, weighted-average period of recognition	0.9
Grant date fair value of stock appreciation rights vested	$ 52.21
Total fair value of restricted stocks	25.4	27.1
Grant date fair value of restricted stocks	15.9	18.9
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Vesting period of share based payments awards	10 year
Unrecognized compensation cost, weighted-average period of recognition	0.4
Total intrinsic value of stock options exercised		10.9
Employee Stock Option [Member] \| Associate [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	4 years
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of share based payments awards	10 year
Total unrecognized compensation cost, net of estimated forfeitures	70.5
Unrecognized compensation cost, weighted-average period of recognition	0.9
Grant date fair value of restricted stocks	$ 18.4	$ 7.9
2007 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Number of shares approved to grant under the plan	2,000,000
2005 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Number of shares approved to grant under the plan	250,000
2005 LTIP [Member] \| Non Associate Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year

Share based compensation arrangement by share based payment award number of other compensation plans

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Share based compensation arrangement by share based payment award number of primary compensation plans.

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

+ References

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Share based compensation expense effect of adjustment for forfeitures.

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Name Staff Accounting Bulletin (SAB)

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- Definition

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.

+ References

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- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

+ References

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- Definition

Description of the period of time over 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, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

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-Paragraph A240

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The minimum vesting term over 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.

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- Definition

The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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- Definition

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.

+ References

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-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Aggregate value of stock related to Restricted Stock Awards issued during the period.

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-Name Accounting Standards Codification

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-Name Accounting Principles Board Opinion (APB)

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-Name Regulation S-X (SX)

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