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Share-Based Compensation (Share-Based Compensation Expense) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011	Jul. 31, 2010
Allocated share-based compensation expense	$ 3.2
Share-based compensation expense before income taxes	5.1	4.1	8.6	8.9
Cost Of Sales [Member]
Allocated share-based compensation expense	1.3	1.0	2.2	2.2
Selling, General And Administrative Expenses [Member]
Allocated share-based compensation expense	$ 3.8	$ 3.1	$ 6.4	$ 6.7

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.

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