Stock-Based Compensation (Summary Of Stock Options Activity) (Details) (USD $)	6 Months Ended
Jul. 30, 2011
Stock-Based Compensation
Outstanding, beginning of period, Number of Shares	6,033,101
Outstanding, beginning of period, Weighted Average Exercise Price	$ 12.87
Granted, Number of Shares	1,531,000
Granted, Weighted Average Exercise Price	$ 13.72
Exercised, Number of Shares	(405,161)
Exercised, Weighted Average Exercise Price	$ 5.70
Canceled or expired, Number of Shares	(547,859)
Canceled or expired, Weighted Average Exercise Price	$ 18.68
Outstanding, end of period, Number of Shares	6,611,081
Outstanding, end of period, Weighted Average Exercise Price	$ 13.03
Exercisable at July 30, 2011, Number of Shares	3,681,315
Exercisable at July 30, 2011, Weighted Average Exercise Price	$ 14.59

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

+ References

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- Definition

The decrease in the number of shares that could be issued attributable to the lapse of rights to exercise previously issued stock options under the terms of the option agreements under the plan during the reporting period.

+ References

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The weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that lapsed during the reporting period.

+ References

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

+ References

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The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Number of share options (or share units) exercised during the current period.

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