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Summary of Significant Accounting Policies Antidilutive Shares (Details)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 02, 2013
Oct. 27, 2012
Nov. 02, 2013
Oct. 27, 2012
Accounting Policies [Abstract]        
Antidilutive securities excluded from computation of EPS (in shares) 2.1 2.8 6.6 1.3