Letter of Credit Agreement (Details) - USD ($) $ in Millions	Aug. 02, 2013	Jul. 29, 2017	Jan. 28, 2017	Jul. 30, 2016
Letter of Credit [Line Items]
Letter of Credit Facility, Initiation Date	Aug. 02, 2013
Letter of Credit Agreement, Maximum Borrowing Capacity	$ 50.0
Collateral Requirement (Domestic)		103.00%
Letter of Credit Agreement, Cash Collateral Requirement (Foreign Currency)		105.00%
Letters of Credit Outstanding, Amount		$ 3.6	$ 3.8	$ 7.9