Revolving Credit Facility (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 27, 2012	Jan. 30, 2016	Jan. 31, 2015
Line of Credit Facility [Line Items]
Credit facility, covenant description		The Company is not required to comply with any financial covenants as long as there are no outstanding borrowings. With regard to the payment of dividends and share repurchases, there are no restrictions if the Company is not borrowing and the payments are funded through cash on hand. If the Company is borrowing, Availability as of the end of each fiscal month during the subsequent projected six fiscal months following the payment must be at least 20 percent of the lesser of the Aggregate Commitments and the Borrowing Base (all terms as defined in the 2011 Restated Credit Agreement).
Interest expense, net		$ 1	$ 1
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit agreement start date		Jan. 27, 2012
Revolving credit facility	$ 200
Revolving credit facility maturity date	Jan. 27, 2017
Credit facility, availability percentage as the lesser of Aggregate Commitments and Borrowing Base		20.00%
Deferred financing fees, unamortized balance		$ 1
Quarterly facility fees on unused portion of credit facility		0.25%	0.25%
Short-term borrowings		$ 0	$ 0
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Incremental facility available for credit facility	$ 200
Revolving credit facility, interest rate margin above LIBOR	1.50%
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, interest rate margin above LIBOR	1.25%