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Intangible Assets And Goodwill (Amortization Expense On Intangible Assets) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011	Jul. 31, 2010
Intangible Assets And Goodwill
Amortization expense on intangible assets	$ 3.1	$ 4.1	$ 6.5	$ 8.4

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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