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Business Organization and Summary of Significant Accounting Policies - Advertising Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Advertising expense $ 115.4 $ 159.9 $ 153.1