Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share Earnings Per Share (Narrative) (Details)

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Earnings Per Share Earnings Per Share (Narrative) (Details) - shares
shares in Millions
9 Months Ended
Oct. 31, 2015
Nov. 01, 2014
Stock Options [Member]    
Stock options and restricted stock units outstanding, not included in computation of diluted earnings per share 6.2 3.2
Restricted Stock Units [Member]    
Stock options and restricted stock units outstanding, not included in computation of diluted earnings per share 0.7 0.9