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Summary of Significant Accounting Policies (Store Pre-Opening Costs) (Details) - USD ($) $ in Millions | 12 Months Ended
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Feb. 03, 2018 | Jan. 28, 2017 | Jan. 30, 2016
Accounting Policies [Abstract] |  |  |
Pre-opening costs | $ 6.2 | $ 5.1 | $ 4.9

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- Definition Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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