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Stockholders' Equity (Employee Stock Purchase Plan) (Details) - USD ($)
$ / shares in Units, shares in Millions
12 Months Ended
Feb. 03, 2018
Jan. 28, 2017
Jan. 30, 2016
Stockholders' Equity Note [Abstract]      
Plan participant's annual percentage ceiling for ESPP (in percentage) 10.00%    
Plan participant's annual dollar amount ceiling for ESPP $ 25,000    
Purchase price for shares under ESPP (in percentage) 85.00%    
Discount rate under the ESPP (in percentage) 15.00%    
Shares purchased by employees (in shares) 0.3 0.3 0.4
Shares purchased by employees, average price per share (in dollars per share) $ 56.42 $ 51.86 $ 43.16
Shares issued under plan during period (in shares) 39.7    
Shares remaining for future issuance (in shares) 5.3