The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

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- Definition

The maximum 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 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 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Exercise price as a percentage of closing price on the day prior to the grant date.

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- Definition

Maximum term of grants of incentive stock options.

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Maximum term of grants of option awards.

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- Definition

Percent ownership each shareholder must have in order to be granted incentive stock options.

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- Definition

The increase in number of shares authorized under the Long-Term Incentive Plan.

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- Definition

The highest quantity of shares that a recipient can be granted under the plan on an annual basis.

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The year of expiration of the Long-Term Incentive Plan.

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Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
Stock-Based Compensation (Narrative) (Details) (USD $)	Jul. 31, 2011	Aug. 01, 2010	Jul. 31, 2011	Aug. 01, 2010
Stock-based compensation expense	$ 7,029,000	$ 6,513,000	$ 12,256,000	$ 15,269,000
Equity Award Programs [Member]
Aggregate number of shares under the plan	25,759,903		25,759,903
Shares available for future grant	9,112,108		9,112,108
Increase in the number of shares issuable under the plan	7,300,000		7,300,000
Year of expiration of Long-Term Incentive Plan			2021
Incentive Stock Options [Member]
Percent ownership each shareholder must have in order to be granted incentive stock options			10.00%
Maximum term of grants of incentive stock options, years			5
Incentive Stock Options [Member] \| Minimum [Member]
Exercise price as a percentage of closing price on the day prior to the grant date			110.00%
Option Awards [Member]
Awards annual grants limit			1,000,000
Maximum term of grants of option awards, years			7
Minimum vesting period of awards granted to employees, years			four
Maximum vesting period of awards granted to employees, years			five
Option Awards [Member] \| Minimum [Member]
Exercise price as a percentage of closing price on the day prior to the grant date			100.00%
Stock Awards [Member]
Awards annual grants limit			400,000
Minimum vesting period of awards granted to employees, years			three
Maximum vesting period of awards granted to employees, years			five
Chief Executive Officer [Member]
Stock-based compensation expense		$ 815,000		$ 4,042,000
Non-Employee [Member]
Minimum vesting period of awards granted to employees, years			one