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Summary of Significant Accounting Policies Debt Issuance Costs and Discount (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010
Summary of Significant Accounting Policies [Abstract]
Unamortized Debt Issuance Expense	$ 8.9	$ 14.8
Amortization of Financing Costs	2.5	3.1	2.2
Amortization of Debt Discount (Premium)	$ 0.3	$ 0.4	$ 0.6

The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate caption: Noncash Interest Expense.

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